Installation Manual with Service Replacement Parts
Door-type
Dishwasher
Models:
MD-1000HT
Pumped rinse high temperature sanitizing
w/built-in stainless steel electric booster
MD-1000LT
Pumped rinse low temperature sanitizing
w/3 built-in chemical dispensing pumps
MD-1000HT
Dishwasher serial no.
MD-1000LT
Issue Date: 3.14.06
Manual P/N 114156 rev.—
For machines beginning with S/N D2466 and above
File: DTMVC0214.6
P.O. Box 4183
2674 N. Service Road, Jordan Station
Ontario, Canada L0R 1S0
905/562-4195 Fax: 905/562-4618
Toll-free: 800.263.5798
Printed in the USA
Winston-Salem, NC 27115
336/661-1992 Fax: 336/661-1660
Toll-free: 800.858.4477
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Revisions to this manual
_____________________ Revisions to this manual
„ This is where we record changes to the manual. A revision might be a part number
change, new instructions, or information that was not available at the time of printing.
„ We reserve the right to make changes to this manual without notice and without
incurring any liability by making the changes.
„ Dishwasher owners may request a revised manual, at no charge, by calling
1 (800) 858-4477 in the USA or 1 (800) 263-5798) in Canada.
Revision
Date
Revised
Pages
Serial Number
Effectivity
Revision
Description
3.14.06
All
D2466
Released first edition
i
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Dear Owner:
Thank-you for choosing our dishwasher.
We appreciate your business.
This manual covers two models:
MD-1000HT Pumped rinse high temperature door -type dishwasher with standard
built-in booster in 40° F/22° C rise or an optional 70° F/39° C rise booster.
MD-1000LT Pumped rinse low temperature chemical sanitizing door-type dishwasher with
built-in chemical dispensing pumps for detergent, rinse-aid, and sanitizer.
The installation, and initial start-up of your dishwasher
must be performed by qualified electricians, plumbers,
and authorized service technicians who are trained in
commercial dishwashers.
Defects and repairs resulting from the improper
installation of your dishwasher cannot be covered
by the dishwasher warranty.
Mr. or Ms. Installer:
Please read the installation guide before you begin.
Thank you,
ii
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Table of Contents
_____________ Table of Contents
Revisions to this manual_______________________________________________
Limited Warranty ___________________________________________________
iii
vi
Installation Guide
MD-1000HT: High temperature Door-type Dishwasher _________ pg.2
; Unpack and Place
; Drain Connection
; Ventilation
; Water Connection
; Electrical Connection
; Chemical Dispensers
_____________________________________________________ Initial Start-up
______________________________________ How to Operate your dishwasher
________________________________________ How to Clean your dishwasher
_____________________________________ How to Maintain your dishwasher
_________________________________________________ The Troubleshooter
MD-1000LT: Low Temperature Door-type Dishwasher ________ pg.26
; Unpack and Place
; Drain Connection
; Ventilation
; Water Connection
; Electrical Connection
; Chemical Dispensers
Initial Start-up
______________________________________ How to Operate your dishwasher
________________________________________ How to Clean your dishwasher
_____________________________________ How to Maintain your dishwasher
_________________________________________________ The Troubleshooter
All Models
Service Replacement Parts _______________________________________ pg.43
Appendix A: (Specification Sheets)
Electrical Schematics
iii
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Limited Warranty
Limited Warranty
Moyer Diebel, P.O. Box 4183, Winston-Salem, North Carolina 27115, and P. O. Box 301, 2674 North Service
Road, Jordan Station, Ontario, Canada L0R 1S0 warrants machines, and parts, as set out below.
Warranty of Machines: Moyer Diebel warrants all new machines of its manufacture bearing the name
“Moyer Diebel” and installed within the United States and Canada to be free from defects in material and workman-
ship for a period of one (1) year after the date of installation or fifteen (15) months after the date of shipment by
Moyer Diebel, whichever occurs first. [See below for special provisions relating to Model Series DF and SW.] The
warranty registration card must be returned to Moyer Diebel within ten (10) days after installation. If warranty card
is not returned to Moyer Diebel within such period, the warranty will expire after one year from the date of ship-
ment.
Moyer Diebel will not assume any responsibility for extra costs for installation in any area where there are
jurisdictional problems with local trades or unions.
If a defect in workmanship or material is found to exist within the warranty period, Moyer Diebel, at its elec-
tion, will either repair or replace the defective machine or accept return of the machine for full credit; provided,
however, as to Model Series DF and SW, Moyer Diebel’s obligation with respect to labor associated with any re-
pairs shall end (a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event that
Moyer Diebel elects to repair, the labor and work to be performed in connection with the warranty shall be done
during regular working hours by a Moyer Diebel authorized service technician. Defective parts become the property
of Moyer Diebel. Use of replacement parts not authorized by Moyer Diebel will relieve Moyer Diebel of all further
liability in connection with its warranty. In no event will Moyer Diebel’s warranty obligation exceed Moyer
Diebel’s charge for the machine. The following are not covered by Moyer Diebel’s warranty:
a. Lighting of gas pilots or burners.
b. Cleaning of gas lines.
c. Replacement of fuses or resetting of overload breakers.
d. Adjustment of thermostats.
e. Adjustment of clutches.
f. Opening or closing of utility supply valves or switching of electrical supply current.
g. Adjustments to chemical dispensing equipment.
h. Cleaning of valves, strainers, screens, nozzles, or spray pipes.
i. Performance of regular maintenance and cleaning as outlined in operator’s guide.
j. Damages resulting from water conditions, accidents, alterations, improper use, abuse,
tampering, improper installation, or failure to follow maintenance and operation procedures.
Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or
interior finish as a result of the above, (2) Use with utility service other than that designated on the rating
plate, (3) Improper connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosion
from chemicals dispensed in excess of recommended concentrations, (6) Failure of electrical components due
to connection of chemical dispensing equipment installed by others, (7) Leaks or damage resulting from such
leaks caused by the installer, including those at machine table connections or by connection of chemical dis-
pensing equipment installed by others, (8) Failure to comply with local building codes, (9) Damage caused by
labor dispute.
Warranty of Parts: Moyer Diebel warrants all new machine parts produced or authorized by Moyer Diebel to be
free from defects in material and workmanship for a period of 90 days from date of invoice. If any defect in mate-
rial and workmanship is found to exist within the warranty period Moyer Diebel will replace the defective part with-
out charge.
DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. MOYER DIEBEL’S WARANTY
IS ONLY TO THE EXTENT REFLECTED ABOVE. CHAMPION MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED, TO ANY WARRANTY OF
MERCHANTABILITY, OR FITNESS OF PURPOSE. MOYER DIEBEL SHALL NOT BE LIABLE FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE
THE EXCLUSIVE REMEDIES FOR ANY DEFECTS FOUND TO EXIST IN MOYER DIEBEL
DISHWASHING MACHINES AND MOYER DIEBEL PARTS, AND ALL OTHER REMEDIES ARE EX-
CLUDED, INCLUDING ANY LIABILITY FOR INCIDENTALS OR CONSEQUENTIAL DAMAGES.
Moyer Diebel does not authorize any other person, including persons who deal in Moyer Diebel Dishwashing
Machines to change this warranty or create any other obligation in connection with Moyer Diebel Dishwashing
Machines.
iv
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Installation Guide
_____________ Installation Guide
;
Unpack and Place MD-1000HT
1. Check the corrugated box that protected the dishwasher during shipment for
punched holes or impact marks.
2. Inspect the shipping pallet for splintered or broken boards.
3. Inspect the exterior of the dishwasher while still mounted on the pallet for signs
of damage.
4. Contact the freight company immediately if damage is found and save all packing
for inspection to verify your damage claim.
5. Report the damage to your equipment supplier. They will contact our factory
for repair or replacement of damaged components.
6. If no damage is found, proceed with lifting the dishwasher from its pallet.
Be careful to lift the dishwasher by the main frame if using a forklift.
7. Make sure the four legs are screwed firmly in place after landing the machine.
8. Check the packing list to ensure all accessories are with the dishwasher.
9. Open the doors and remove the dishracks inside the machine and locate
the postpaid warranty cards.
10. Complete the warranty card and drop in the mail immediately.
11. Move the dishwasher close to its permanent location.
12. Locate the Quick Check Installation Card glued on the front door of the
dishwasher. The card has a check list to familiarize the installer with the
dishwasher installation procedures detailed in this manual.
13. Remove the protective covering from the dishwasher and identify the
utility connections. Information cards and stickers must not be removed from
the dishwasher until the installation is complete.
14. Locate but do not remove the set of 2 keys attached to the back of the top-mounted
control cabinet.
1
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MD-1000HT • Unpack and Place
Installation Guide _____________
;ꢀ
Unpack and Place MD-1000HT
1. The installation of your dishwasher must be performed by qualified service personnel.
2. Problems due to improper installation are not covered by the Warranty.
3. Compare the utilities at the installation site with the specifications listed on each
model's specification sheets ( See Appendix A at the end of this manual)
4. The dishwasher data plate is located on the left, rear-corner of the top-mounted
control cabinet.
5. Study the configuration diagrams below. They show the 2 ways that the dishwasher may
be positioned.
Corner and straight-through dishwasher configurations
Dish table
Position dishwasher as shown
below so the controls are easy
to reach by the operator.
Control Cabinet
Dish table
Incorrect Corner Configuration
Correct Corner Configuration
Control Cabinet
Note:
The correct corner installation places the dishwasher
so the top-mounted controls are easy to reach.
The minimum distance from wall to dishwasher
is 4" [103mm]. The maximum distance is
6" [129].
The room ceiling height must be a minimum of
80" [2032mm] so the doors can be removed
completely.
6" [152] Max.
Wall Clearance
Straight-through Configuration
2
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MD-1000HT • Unpack and Place
_____________ Installation Guide
;ꢀ
Unpack and Place MD-1000HT
1. All dishwashers ship in the straight-through configuation.
2. Relocate the tracks and remove the wall-side door link components
to convert the dishwasher for corner operation.
1
2
Move Part 2
Move Part 1
3
Remove Interior Door Bracket
1
4
2
wall
Remove Door Linkage
5
wall
Adjust Door Spring Tension
3
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MD-1000HT • Unpack and Place
Installation Guide _____________
;ꢀ
Unpack and Place MD-1000HT
1. Compare the dishwasher and site utility connections.
2. Level the dishwasher by adjusting the bullet feet.
3. Raise the doors and check the door clearance to the ceiling.
4. Move the dishwasher to its permanent location.
Note:
Installers must follow applicable sanitation, safety, plumbing, and electrical codes and
regulations; and work in accordance with best practices for dishwasher installation.
Utility Connections - MD-1000HT
Power:
208-240V Single or Three Phase
Water supply:
3/4" NPT hot water supply (140°F/60°C minimum) for 40° F/22° C rise booster
(35 psi/241 KPa static pressure) 7-10 psi/63-69Kpa flow pressure
3/4" NPT hot water supply (110°F/43°C minimum) for 70° F/39° C rise booster
(35 psi/241 KPa static pressure) 7-10 psi/63-69Kpa flow pressure
Drain:
1-7/8" stainless steel, slip-fit hose connection
Max flow: 15 Us gal/min. (13.5 Imperial gal/min) 57liters/min.
Chemicals:
Detergent and rinse-aid products are supplied by a chemical supplier
4
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MD-1000HT • Electrical Connection
_________________ Installation Guide
;ꢀ
Electrical Connection MD-1000HT
Warning:
The dishwasher must be electrically grounded according to all local codes
and regulations governing the installation of electrical service.
Warning:
Disconnect the main electric supply and place a tag at the fuse or disconnect switch
indicating that work is being performed on that circuit.
1. Locate the control cabinet keys on the rear of the control cabinet.
2. Remove 1 key to unlock the cabinet; do not remove the other key.
3. Unlock the control cabinet and remove the cover.
4. Locate the power cable knock out and main terminal block on the left-side of the cabinet.
5. Locate the Machine Electrical Connection Data Plate mounted near the terminal block.
The MACHINE ELECTRICAL CONNECTION DATA PLATE is the certified authority for the
dishwasher power requirements. DO NOT use electrical data from any other source
unless an authorized factory representative instructs you to use other data.
6. Connect the electric service to the dishwasher.
Cable knock-out
Machine Electrical
Connection Data Plate
Main terminal block
ATTENTION ELECTRICIAN
The Model MD-1000HT dishwasher must not be turned ON at the dishwasher's
power switch located on the front of the top-mounted control cabinet
without performing an Initial Start-up at the same time.
Powering the dishwasher without performing the Initial Start-up
may damage the dishwasher's electrical circuits.
5
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MD-1000HT • Water Connection
Installation Guide _____________
;ꢀ
Water Connection MD-1000HT
1. Locate the built-in stainless steel booster on the left-side of the dishwasher.
Note:
The existing hot water supply lines to the dishwasher must be 3/4" NPT or larger. To the best of
your ability inspect, and verify that all supply piping meets the 3/4" NPT requirement.
Note:
The installing plumber must connect a water supply line to the dishwasher that is equal to or
greater than 3/4" NPT in size and a 3/4" pressure regulating valve, PRV (not supplied).
Dishwasher temperature
and water pressure requirements:
140°F/60°C minimum) for 40° F/22° C rise booster
(35 psi/241 KPa static pressure)
7-10 psi/63-69Kpa flow pressure
(110°F/43°C minimum) for 70° F/39° C rise booster
(35 psi/241 KPa static pressure)
7-10 psi/48-69Kpa flow pressure
2. Connect a 3/4” NPT hot water supply to the dishwasher at the line strainer.
Note:
The following components are not required for proper dishwasher operation, but are
highly recommended, because they make servicing of the dishwasher much faster.
Install the following components (not supplied) in the hot water supply line:
1) 3/4” or larger water shut-off valve near the machine in the water supply line.
2) ASSE 1010 Water hammer arrestor upstream from the shut-off valve.
3) Pressure gauge 0-60 PSI minimum downstream from the PRV.
4) Temperature gauge 0-180°F/82°C (not supplied) downstream from the gauge.
6
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Blank Page
This Page
Intentionally
Left Blank
7
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MD-1000HT • Drain Connection
Installation Guide _____________
;ꢀ
Drain Connection MD-1000HT
Continued from page 7
1. Locate the dishwasher drain connection underneath the machine frame.
2. Install a drain line conforming to local plumbing and health regulations.
Drain: 1-7/8" stainless steel, slip-fit hose connection
Max flow:
15 US gal/min.
13.5 Imperial gal/min
57liters/min.
;ꢀ
Ventilation MD-1000HT
1. The factory has no requirements for vent hoods; but, local codes and regulations in your
area supersede our suggestions. Consult your local building and health authorities for
local requirements.
2. Dishroom ventilation must provide sufficient airflow to prevent excessive humidity in the
work area. 200-400cfm/ 5.6 - 11.3 k Liters/min - is sufficient.
3. The dishwasher must not be subjected to continual drafts or cold air.
8
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MD-1000HT • Chemical Dispensers
_______________ Installation Guide
;ꢀ
Chemical Dispensers MD-1000HT
1. The MD-1000HT high temperature dishwasher sanitizes with 180-195° F/82-91° C
hot final rinse water.
2. Do not connect a sanitizer chemical dispenser to the MD-1000HT.
3. You may wish to contact a chemical supplier to supply the chemical dispensers
and chemicals for liquid detergent and liquid rinse-aid. (Consult your local listings).
4. The chemical supplier must adjust their dispensers to provide the proper dosages
for the installed dispensing system.
5. The factory may have supplied the chemical dispensing system as an option. Your
chemical supplier must adjust factory dispensers for the chemicals supplied also.
Note:
Manual dosing of detergent or rinse-aid is NOT RECOMMENDED for the MD-1000HT
dishwasher. Poor washing results may result if manual dosing is employed..
Note:
Cartridge detergent systems are NOT RECOMMENDED for the MD-1000HT
dishwasher. Poor washing results may result if installed on this model.
6. The factory recommends that the chemical injectors be installed in the right
front corner of the wash tank as shown below.
Factory installed injection points
Recommended
locations
for chemical injectors
for dispensing
systems
supplied by others.
Continued on page 10
9
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MD-1000HT • Chemical Dispensers
Installation Guide _____________
;ꢀ
Chemical Dispensers MD-1000HT
Continued from page 9
115VAC Power Connections for Chemical Dispensers
FOR QUALIFIED INSTALLERS ONLY
Warning:
Chemical dispensers must be electrically grounded in compliance with applicable electric codes.
Warning:
Disconnect the main electric supply and place a tag at the fuse or
disconnect switch indicating that work is being performed on that circuit.
Caution:
Connecting chemical dispensers at points other than those recommended by the factory may
damage the dishwasher electrical system.
Damage caused by the installation of chemical equipment will not be covered by our WARRANTY.
1. Unlock the top-mounted control cabinet with the key. two keys should be stowed behind the
control cabinet. The installing electrician used one key during their installlation.
2. Locate the cycle timer mounted in the right-rear corner of the control cabinet.
3. Refer to the MD-1000HT electrical schematic located at the end of this manual.
10
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MD-1000HT • Chemical Dispensers
_________________ Installation Guide
;ꢀ
Chemical Dispensers MD-1000HT
4. The diagrams below are taken from the electrical s chematic and are shown to help you
locate and focus on the steps necessary to connect the your dispensing pumps to the
dishwasher.
L1
L2
L2
GND
1
2
3
208VAC/3PH/60/3
Main terminal block
and ground lug
Detergent dispensing pump & cycle
Timer cam No.6 with timer microswitch
Rinse-aid dispensing pump & cycle
timer cam No.7 with timer microswitch
Earth
Ground
also called
Chassis
Ground
Continued on page 12
11
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MD-1000HT • Chemical Dispensers
Installation Guide _____________
;ꢀ
Chemical Dispensers MD-1000HT
Continued from page 11
5. The main terminal board is the
termination point for the incoming power
and earth ground which is also called the
chassis ground.
6. Chemical dispensers (not supplied by
Factory) should be grounded to chassis
if possible.
7. The detergent signal and the rinse-aid signal
terminals for your chemical dispensing pumps
are provided on the common terminal of each
Timer Cam microswitch (See diagrams above).
Cam No.6 operates the detergent microswitch
Cam No.7 operates the rinse-aid microswitch.
8. Look to the right for the photo of a timer cam
microswitch. Note the configuration of the
switch, do you see how the common terminal
is different than the Normally Closed (N.C.)
and the Normally Open (N.O.) terminals?
9. Look again at the Cycle Timer and
locate the Detergent Cam No.6 and
the Rinse-aid cam No.7.
10. There are 7 Cams on the cycle timer.
They are numbered 1-7 starting at
the timer motor side of the assembly.
11. Look at the underside of the detergent
and the Rinse-aid timer microswitches
and identify the common terminals.
12. Connect the hot lead for the detergent
pump to the common terminal of Cam
Switch No. 6. Make the connection using
a 12-14 slip-on terminal.
Do the same for the rinse-aid switch.
12
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MD-1000HT • Chemical Dispensers
________________ Installation Guide
;ꢀ
Chemical Dispensers MD-1000HT
Caution:
The NEUTRAL RETURN (#2 white wires) and Chassis Ground are
not the same point electrically. Improper wiring to these points may
result in unusual voltage readings and damage to the dishwasher's
electrical circuits.STOP WORKING ON THE DISHWASHER AT ONCE,
if you do not know the difference between a neutral return and chassis
ground.
Note:
You may void the dishwasher warranty if you connect the neutral wire
of your dispensing system anywhere else than at the main power
transformer.
13. Now you must connect your pumps to
the dishwasher neutral return. All white
wires marked with No. 2 are neutral wires;
however, you are not authorized to connect
to any #2 wire that you may identify.
14. Run a 12 gauge white wire with spade terminal connector (not supplied) from your
chemical dispensing pumps to the neutral #2 white wire located on the main power
transformer in the control cabinet.
ATTENTION INSTALLER
DO NOT TURN ON the dishwasher power switch
located on the front of the top-mounted control cabinet
before the Initial Start-up is completed
Powering the dishwasher as described above, without knowing for
certain that the Initial Start-up was performed, may make you liable for any damages
stemming from your actions.
13
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MD-1000HT • Chemical Dispensers
Installation Guide _____________
;ꢀ
Chemical Dispensers MD-1000HT
Priming the chemical dispensers (Factory dispensers only)
1. Factory dispensers are
optional equipment; however,
an automatic dispenser must
be installed by someone in
lieu of the factory.
OUT
OUT
IN
IN
2. The dispensers are mounted on
the right-hand side of the lower
wash tank.
From
To wash tank
injection points
Chemical
Containers
3. Chemical pick-up tubes are
inserted into their respective
containers.
4. Detergent and Rinse-aid chemical containers
can be placed a maximum of 11" [280 mm]
above the finished floor, (ABF).
5. Place the chemical containers as close
to the dishwasher as possible.
6. Each day check the detergent and rinse-aid
chemical containers to make sure they
are at least 1/2 full.
7. Push and hold the 2-position prime switch located on the front of the
top-mounted control cabinet. Push UP to prime the detergent
and DOWN to prime the rinse-aid.
8. Watch the chemical as it traveght-glass located on the
Factory installed sight-glass
right-hand side, top-
rear corner of the
machine.
9. Release the switch
when the chemical
enters the sight-
glass.
10. Chemicals should
reach the sight-
glass within 2
minutes of prime.
14
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MD-1000HT • Initial Start-up
_____________ Installation Guide
;ꢀ
Initial Start-up MD-1000HT
Caution:
DO NOT flip the dishwasher power switch "ON"
until you read the instructions below.
1. The built-in stainless steel electric booster
was shipped without water.
2. A manilla card located above the power
switch explains how to turn the machine
on for the first time.
See step No. 10 on the next page for the first
DISHWASHER POWER UP procedure.
Let's begin the Initial Start-up:
1. Check the placement of the dishwasher:
; Compare the machine location with the
building plan or consult the owner or
the General Contractor for approval.
; Check that the dishwasher configuration
straight-through or corner operation
is correct (See page 2 for details).
2. Check that all options and/or accessories
are installed.
3. Remove protective white wrapping, tape,
and other packing materials and discard.
4. Remove any foreign materials from the
interior of the machine.
Continued on page 16
15
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MD-1000HT • Initial Start-up
Installation Guide _____________
;ꢀ
Initial Start-up MD-1000HT
Continued from page 15
5. Check that the following utilities are connected:
to the dishwasher and ready for use:
;
;
Electrical service
Hot water supply
;
;
Drain
Ventilation (if required by local regulations).
6. Check the chemical connections and chemical containers to
ensure that enough chemical supplies are available.
7. Turn on the water supply to the dishwasher.
8. Turn on the main power switch at the service disconnect switch.
9. Open the dishwasher doors fully.
10. Check upper and lower spray arms are in place and spin freely.
11. Check that the drain-overflow and pump screen are in place.
11a
11b
10
12. Check that the lower scrap screen is clean and in place.
16
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MD-1000HT • Initial Start-up
_____________ Installation Guide
;ꢀ
Initial Start-up MD-1000HT
POWER UP THE DISHWASHER:
As stated on page 15, the dishwasher power switch must not
be turned without reading the instructions below.:
POWER
FILL
CYCLE
ON
DRAIN
OFF
13. Turn on the main power switch at the service disconnect switch.
14. Flip the dishwasher power switch UP to turn on the dishwasher.
15. Immediately, push the fill switch up and hold it in the up position
until the water flows out of the wash tank and into the lower scrap screen.
16. Release the fill switch.
17. Open the dishwasher door fully and check the water level inside the tank.
The proper water level is just below the overflow tube and 3" [76 mm]
from the lower sprayarm support. Measure from the back of the support
up the tank toward the rear wall of the dishwasher.
15
14
16
3" [76mm]
Water line
17
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MD-1000HT • Initial Start-up
Installation Guide _____________
;ꢀ
Initial Start-up MD-1000HT
18. Operate the dishwasher for 10 cycles. Monitor
the wash and final rinse gauges located on the
lower front panel of the dishwasher to ensure the
machine is maintaining the proper temperatures.
In the USA, the NSF standards are:
150° F/66° C minimum wash temperature
180° F/82° C minimum final rinse temperature
Note:
In Canada, sanitary standards are regulated by each province.
Consult your provincial authorities for temperature requirements
and other sanitary standards.
19. Check the green cycle light. It should illuminate throughout
the 90-second cycle, then go out at the end of the cycle.
When the doors are raised, the cycle light should again
illuminate for 3-seconds and then go out. The 3-second
light indicates the timer is resetting. DO NOT CLOSE the
doors until the cycle light goes out.
20. Check the dishwasher piping for leaks.
21. Check the drain connection and make sure the house
drain piping handles the dishwasher drain flow.
Max flow is 15 USgpm/58 lpm or 1.7 US gals/6.6 Liters per rack.
22. Check the operation of the doors. They should go up and down smoothly.
Check the white door guides to ensure they move with the doors.
23. Inspect the table connections to the dishwasher making sure they
are secure and sealed with 100% silicon sealant on the mating flanges. The soiled
table
must slope away from the dishwasher and the clean
toward the dishwasher.
24. Remove the upper and lower sprayarms and
check the condition of the sprayarm
bearing O-rings.
25. The initial start-up is complete. Turn off power
to the dishwasher.
18
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How to Operate your Dishwasher • MD-1000HT
________________________Installation Guide
;ꢀ
How to Operate your Dishwasher MD-1000HT
1. Make sure there is adequate supply of liquid detergent and rinse-aid.
Check the chemical containers and refill if necessary.
2. Ensure internal circular tank screen, upper and lower spray arms and lower external
scrap screen are clean and in place.
3. Close door. Turn POWER switch to the “ ON ” position. Lift “FILL/DRAIN” switch to the “FILL”
position and hold for approximately 15-20 seconds, or until water flows from the wash tank
into the lower scrap pan.
4. Check the wash temperature gauge. Minimum reading must be 150°F/66°C.
Operate the dishwasher through 2 complete cycles to increase the wash temperature to
150°F/66°C. Check the temperature gauge reading on the front of the dishwasher to ensure
minimum temperatures are maintained.
5. Open doors completely and slide pre-scrapped rack of dishes into dishwasher.
Check that control panel green light is out.
6. Close doors to automatically start the cycle. Total cycle time is 90-seconds.
7. The RINSE SENTRY feature monitors the final rinse water temperature being generated in
the built-in booster. The rinse sentry will extend the wash cycle in the event that the
final rinse temperature is less than 180°F/82°C. Rinse Sentry deactivates when the final rinse
water in the built-in booster is a minimum of 180°F/82°C. Then the dishwasher timed cycle will
complete the wash cycle, drain and refill with the final rinse water and complete the cycle.
(See page 20 for an in-depth explanation of the Rinse Sentry feature.)
8. The final rinse cycle begins after the dishwasher washes and then drains.
The rinse-aid is automatically added to the wash tank.
9. Cycle ends when green cycle light goes out. Opening the doors anytime during the
timed cycle will stop the dishwasher. The dishwasher will resume operation as soon as
the doors are closed. The timed cycle will begin at the place where it had stopped.
9. Open door. Remove the clean rack of dishes and insert another rack of soiled dishes.
10. Repeat steps 5-12 until all wares are clean.
Note:
Wash temperature must be a minimum of 150oF/66oC for optimum wash performance.
Pumped final rinse temperature must be a minimum 180-195oF/82-91oC for sanitizing.
19
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MD-1000HT • What is the Rinse Sentry Feature?
Installation Guide _____________
;ꢀ
What is the Rinse Sentry Feature? MD-1000HT
The MD-1000HT Rinse Sentry automatically monitors the final rinse water temperature in the
built-in stainless steel electric booster heater. If the final rinse water in the booster falls below
180°F/82°C, the Rinse Sentry will extend the dishwasher's wash cyle time in order to give
the booster heater additional time to provide the 180°F/82°C water temperature required.
Sanitization using hot final rinse water:
1. The MD-1000HT sanitizes dishware with a pumped hot final rinse water at a minimum
temperature of 180°F/82°C.
2. The MD-1000HT includes a built-in stainless steel electric booster heater which heats
incoming water temperatures to 180-195°F/82-91°C.
3. With Rinse Sentry, if the final rinse temperature inside the booster tank is below the
minimum 180°F/82°C, the timed cycle pauses the wash cycle until the minimum
temperature is available.
4. If something is defective and the final rinse water cannot reach the 180°F/82°C,
then the dishwasher will wash indefinitely.
5. This is usually the point where the operator realizes that the dishwasher has a
problem because the wash cycles are way too long.
Who is responsible for checking the final rinse water temperature?
1. The people operating the dishwasher, that's whom?
2. You are required to check to make sure that the final rinse water temperature gauge
always reads a temperature of 180-195°F/82-91°C during the final rinse cycle. And, It is
your job to immediately stop washing dishes if the temperature falls below the minimum
temperature of 180°F/82°C.
3. Guess what? Most people will forget to check the final rinse temperature at least once
in their careers! That's why the RInse Sentry is a part of your dishwasher.
Rinse Sentry constantly checks the final rinse water temperature
to ensure the minimum required temperature of 180°F/82°C is available
to sanitize the dishware for the health and safety of your guests.
20
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How to Clean your Dishwasher • MD-1000HT
_____________________ Installation Guide
;ꢀ
How to Clean the MD-1000HT
1.
2.
Leave the machine power switch in the ON position. Doors are fully closed.
Push and hold the “FILL/DRAIN” switch down in the “DRAIN” position for approximately
15-20 seconds. The water in the wash tank will drain completely.
3.
4.
Raise doors fully. Use caution, as metal surfaces may be hot. Allow interior to cool.
Rinse the interior of the dishwasher with fresh water. Wipe the interior with a soft cloth.
Do not scrub the interior with scouring pads, nor harsh detergents.
5.
Close the doors fully; the dishwasher will begin a normal cycle. At the end of the cycle,
Push & hold the Fill/drain switch in the DRAIN position until the wash tank is empty
6.
7.
8.
9.
Flip the dishwasher power switch to the OFF position
Remove and clean circular wash tank screen.
Check the overflow /drain assembly. Ensure the drain seat is clean.
Loosen the upper and lower thumbscrews (Do not remove the screws)
Remove upper and lower sprayarms. Flush the sprayarm nozzles and check the
bearing o-rings.
10. Replace sprayarms (they are interchangeable) and tighten thumbscrews.
11. Replace circular tank screen.
12. Remove lower scrap screen. Empty debris and flush both sides with fresh water.
13. Check the drain pan and flush with clean water.
14. Wipe the exterior of the dishwasher with a soft cloth.
Do not hose the exterior with water nor scrub with scouring pads or harsh detergents.
15. Replace lower scrap screen, circular screen, and leave doors open for overnight drying.
16. Check the chemical supplies to ensure there are adequate supplies for the next shift.
21
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MD-1000HT • How to Maintain your Dishwasher
Installation Guide _____________
;ꢀ
How to Maintain the MD-1000HT
Thoroughly cleaning your dishwasher
every day is very best maintenance
you can do!!
Daily Maintenance
1.
2.
3.
4.
5.
Keep your dishwasher and the surrounding area spotlessly clean.
Immediately report loose, broken or missing parts to your supervisor.
Check drains for flow restrictions.
Check the dishwasher for leaks.
Operate the dishwasher as explained in this manual.
Monthly Maintenance
1.
2.
3.
4.
5.
6.
Inspect pump hoses, door linkage, springs, and exterior of dishwasher for wear.
Inspect the wash arm bearings and O-rings.
Check the condition of scrap screens,. and dishracks for bent or broken pieces.
Check the toggle switches and indicator lights for damage.
Check the wash pump motor for loud bearings and leaking pump seal.
Create a simple Maintenance Tracking System as a guide for service.
Annual Maintenance
Call your authorized service agent or local service representative and schedule
a complete inspection of your dishwasher by a trained professional.
A Maintenance Tip -
Schedule your annual maintenance when you can give the service
agent unrestricted access to the dishwasher for at least 2 to 2-1/2 hours.
22
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MD-1000HT • The Trounbleshooter
The Troubleshooter
In order to find the cause of a breakdown or abnormal operating condition in your dishwasher please
ensure that:
1. All switches are ON
2. Drain overflow tube is in place and seated
3. Wash pipe and rinse nozzles are clean
4. Spray arms are in their proper positions
5. Round screen is properly positioned
6. Detergent, sanitizer and rinse additive dispensers are adequately filled
8. Doors are fully closed.
That wasn't it? Check for a solution below:
PROBLEM
CAUSE
SOLUTION
Cycle will not start
Door not closed ........................... Make sure doors are fully closed
Door safety switch faulty ............. Contact your service agency
Main switch off ............................. Check disconnect
Low or no water
Main water supply is turned off ... Turn on house water supply
Drain/overflow tube is not
in place and seated ..................... Clean, replace and seat drain tube
..................................................... as needed.
Faulty fill valve ............................. Contact your chemcial supplier.
Continuous water filling
Motor not running
Fill valve will not close ................. Clean or replace
Defective contactor ..................... Contact your servicer
Defective motor ........................... Contact your servicer
Wash tank water temperature ..................................................... Incoming water temperature
is low when in use
..................................................... at machine too low
..................................................... Raise temperature to 140°F/60°C
Defective thermometer ................ Check or replace
Defective solenoid valve ............. Check or replace
Arms not rotating
Rinse nozzles not clean .............. Clean
Bearings worn.............................. Replace
Water supply pressure low ......... Check incoming water pressure
Insufficient pumped spray
pressure
Clogged intake screen ............... Clean
Clogged spray pipe ..................... Clean
Low water level in tank ................ Check drain and overflow tube, timer may
..................................................... need adjustment, contact servicer
Defective pump seal.................... Contact service agent
Insufficient rinse or no
rinse
Faulty pressure regulating valve . Clean or replace
Improper setting on pressure
regulating valve ........................... Set static pressure to 35 psi
Clogged rinse nozzle and/or
pipe .............................................. Clean with paper clip/delime
Improper water line size .............. Have installer change to proper size 3/4" NPT
23
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MD-1000HT • The Troubleshooter
The Troubleshooter (continued)
PROBLEM
CAUSE
SOLUTION
Low final rinse temperature Low incoming water..................... Check valve to be sure it is clean and
..................................................... operating.
Defective thermometer ................ Check for proper setting or replace
Machine leaking
Leaking at chemical hose ........... Replace hoses
Pump seal leaking ....................... Replace seal
Leaking at pump hose................. Contact your chemical supplier
Leaking at doors .......................... Check to make sure that doors are fully
..................................................... closed
Water splashing out door
Poor washing results
Nozzles/End caps missing .......... Replace caps
Wash nozzles blocked ................ Clean
Arms not rotating ......................... Replace bearings
Door handle twisted .................... Adjust or replace handle
Detergent dispenser not
operating properly ....................... Contact detergent supplier
Insufficient detergents ................. Contact detergent supplier
Food Soil concentration too
high in wash tank......................... Prescrap dishes throughly
Wash water temperature
too low ......................................... See condition “Wash Tank
Water Temperature” above
Wash arm clogged ...................... Clean
Improperly scraped dishes .......... Check scraping procedures
Ware improperly
placed in rack .............................. Use proper racks. Do not overload racks
Improperly cleaned
equipment .................................... Unclog wash sprays and rinse nozzles
to maintain proper pressure and flow
conditions. Overflows must be open.
Keep wash water as clean as possible.
24
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MD-1000LT • Installation Guide
Model MD-1000LT
Installation
Guide
25
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MD-1000LT • Unpack and Place
Installation Guide ____________
;ꢀ
Unpack and Place MD-1000LT
1. The installation of your dishwasher must be performed by qualified service personnel.
2. Problems due to improper installation are not covered by the Warranty.
3. Compare the utilities at the installation site with the specifications listed on each
model's specification sheets ( See Appendix A at the end of this manual)
4. The dishwasher data plate is located on the left, rear-corner of the top-mounted
control cabinet.
5. Study the configuration diagrams below. They show the 2 ways that the dishwasher may
be positioned.
Corner and straight-through dishwasher configurations
Dish table
Position dishwasher as shown
below so the controls are easy
to reach by the operator.
Control Cabinet
Dish table
Incorrect Corner Configuration
Correct Corner Configuration
Note:
The correct corner installation places the dishwasher so the top-
mounted controls are easy to reach.
Control Cabinet
The minimum distance from wall to dishwasher
is 4" [103mm]. The maximum distance is
6" [129].
The room ceiling height must be a minimum of
80" [2032mm] so the doors can be removed
6" [152] Max.
Wall Clearance
completely.
Straight-through Configuration
26
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MD-1000LT • Unpack and Place
_____________ Installation Guide
;ꢀ
Unpack and Place MD-1000LT
1. All dishwashers ship in the straight-through configuation.
2. Relocate the tracks and remove the wall-side door link components
to convert the dishwasher for corner operation.
Move Part 2
Move Part 1
Remove Interior Door Bracket
1
2
wall
Remove Door Linkage
wall
Adjust Door Spring Tension
27
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MD-1000LT • Unpack and Place
Installation Guide ____________
;ꢀ
Unpack and Place MD-1000LT
1. Compare the dishwasher and site utility connections.
2. Level the dishwasher by adjusting the bullet feet.
3. Raise the doors and check the door clearance to the ceiling.
4. Move the dishwasher to its permanent location.
Note:
Installers must follow applicable sanitation, safety, plumbing, and electrical codes and
regulations; and work in accordance with best practices for dishwasher installation.
Utility Connections - MD-1000LT
Power:
115VAC 15Amp circuit
Water supply:
3/4" NPT hot water supply (140°F/60°C minimum)
(35 psi/241 KPa static pressure) 7-10 psi/63-69Kpa flow pressure
Drain:
1-7/8" stainless steel, slip-fit hose connection
Max flow: 15 Us gal/min. (13.5 Imperial gal/min) 57liters/min.
Chemicals:
Detergent, rinse-aid, and sanitzer pumps are standard equipment.
Chemicals supplied by a chemical supplier
Chemical Dispensing Pumps - Factory Installed for MD-1000LT
•
All pumps use liquid chemicals
•
Detergent pump capacity =
Factory setting for detergent =
350cc/min @ 108 RPM
105cc in 18secs.
•
•
Rinse-aid pump capacity =
Factory setting for rinse-aid
35cc/min @ 14RPM
14cc in 23 sec.
Sanitizer pump capacity =
35cc/min @ 14RPM
Factory setting for Sanitizer=
14cc in 23 sec.
maintains 50PPM concentration of
5.25% sodium hypochlorite during
the final rinse cycle.
28
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MD-1000LT • Electrical Connection
_________________ Installation Guide
;ꢀ
Electrical Connection MD-1000LT
Warning:
The dishwasher must be electrically grounded according to all local codes
and regulations governing the installation of electrical service.
Warning:
Disconnect the main electric supply and place a tag at the fuse or disconnect switch
indicating that work is being performed on that circuit.
1. Locate the control cabinet keys on the rear of the control cabinet.
2. Remove 1 key to unlock the cabinet; do not remove the other key.
3. Unlock the control cabinet and remove the cover.
4. Locate the power cord on the left rear side of the control cabinet.
5. Locate the Machine Electrical Connection Data Plate mounted near the terminal block.
The MACHINE ELECTRICAL CONNECTION DATA PLATE is the certified authority for the
dishwasher power requirements. DO NOT use electrical data from any other source
unless an authorized factory representative instructs you to use other data.
6. Check the power cord terminal connections at the main terminal board.
Machine Electrical
Connection Data Plate
Main terminal block
29
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MD-1000LT • Water Connection
Installation Guide ____________
;ꢀ
Water Connection MD-1000LT
Water supply:
3/4" NPT hot water supply (140°F/60°C minimum)
(35 psi/241 KPa static pressure) 7-10 psi/48-69Kpa flow pressure
Note:
Plumbing installer must connect a 3/4" NPT hot water supply line to the dishwasher.
A 3/4" pressure regulating valve (PRV) (not supplied) must be installed in the water
supply line and adjusted to (35 psi/241 KPa static pressure) 7-10 psi/48-69Kpa flow pressure
Note:
Under NO circumstances, may the installing plumber connect a water supply line to the
dishwasher that is less than 3/4" NPT in size.
Note:
The following components are not required for proper dishwasher operation, but are
highly recommended, because they make servicing of the dishwasher much faster.
Install the following components (not supplied) in the hot water supply line:
1) 3/4” or larger water shut-off valve near the machine in the water supply line.
2) ASSE 1010 Water hammer arrestor upstream from the shut-off valve.
3) Pressure gauge 0-60 PSI minimum downstream from the PRV.
4) Temperature gauge 0-180°F/82°C (not supplied) downstream from the gauge.
(3/4" NPT line strainer not supplied)
30
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MD-1000LT • Drain Connection
_____________ Installation Guide
;ꢀ
Drain Connection MD-1000LT
1. Locate the dishwasher drain connection underneath the machine frame.
2. Install a drain line conforming to local plumbing and health regulations.
Drain: 1-7/8" stainless steel, slip-fit hose connection
Max flow: 15 Us gal/min. (13.5 Imperial gal/min) 57liters/min.
;ꢀ
Ventilation MD-1000LT
1. The factory has no requirements for vent hoods; but, local codes and regulations in your
area supersede our suggestions. Consult your local building and health authorities for
local requirements.
2. Dishroom ventilation must provide sufficient airflow to prevent excessive humidity in the
work area. 200-400cfm/5.6- 11.3 k Liters/min - is sufficient.
3. The dishwasher must not be subjected to continual drafts or cold air.
31
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MD-1000LT • Chemical Dispensers
Installation Guide ____________
;ꢀ
Chemical Dispensers MD-1000LT
Note:
Manual dosing of detergent or rinse-aid is NOT RECOMMENDED for the MD-1000LT
dishwasher. Poor washing results may result if manual dosing is employed..
Note:
Cartridge detergent systems are NOT RECOMMENDED for the MD-1000LT
dishwasher. Poor washing results may result if installed on this model.
Note:
The MD-1000LT chemical dispensers are standard equipment.
There are 3 built-in dispensers located on the front of the MD-1000LT
top-mounted control cabinet.
Consult a local commercial
dishwasher chemical supplier
for the set-up and operation
of the dispensing system.
32
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MD-1000LT • Initial Start-up
_____________ Installation Guide
;ꢀ
Initial Start-up MD-1000LT
1. Check that the following utilities are connected:
to the dishwasher and ready for use:
;
;
;
;
Electrical service
Hot water supply
Drain
Ventilation (if required by local regulations)
2. Check the chemical connections and chemical containers to
ensure that enough chemical supplies are available.
3. Turn on the water supply to the dishwasher.
4. Turn on the main power switch at the service disconnect switch.
5. Open the dishwasher doors fully.
6. Check upper and lower spray arms are in place and spin freely.
7. Check that the drain-overflow and pump screen are in place.
7a
7b
6
8. Check that the lower scrap screen is
clean and in place.
33
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Blank Page
This Page
Intentionally
Left Blank
34
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MD-1000LT • Initial Start-up
_____________ Installation Guide
;ꢀ
Initial Start-up MD-1000LT
POWER UP THE DISHWASHER:
1. Flip the dishwasher power switch UP to turn on.
2. Turn on the main power switch at the service disconnect switch.
3. Release the fill switch.
4. Open the dishwasher door fully and check the water level inside the tank.
The proper water level is just below the overflow tube and 3" [76 mm]
from the lower manifold measuring up the tank toward the rear of the
dishwasher.
5. Operate the dishwasher for 10 cycles
checking the temperature gauges to
ensure the machine is maintaining
the proper temperatures.
120°F/49°C minimum wash temperature
140°F/60°C recommended optimum
120°F/49°C minimum final rinse temperature
140°F/60°C recommended optimum
Water line
6. To drain the dishwasher, leave the machine
power switch in the ON position.
Doors are fully closed.
7. Push and hold the “FILL/DRAIN” switch down in
the “DRAIN” position for approximately 15-20
seconds.
8. The water in the wash tank will drain completely.
9. Open the doors and check that all water has
drained for the machine.
10. The initial start-up is complete.
35
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How to Operate your Dishwasher • MD-1000LT
Installation Guide ____________
;ꢀ
How to Operate the MD-1000LT
1.
2.
3.
Make sure there is adequate supply of liquid detergent and rinse-aid, and sanitizer.
Check the chemical containers and refill if necessary.
Ensure the overflow tube/drain ball are clean and in place, and the circular pump screen, upper and
lower spray arms and lower external scrap screen are clean and in place.
Close door. Turn POWER switch to the “ ON ” position. Lift “FILL/DRAIN” switch to the “FILL” position and
hold for approximately 15-20 seconds, or until water flows from the wash tank into the lower scrap pan.
4.
5.
Check the wash temperature gauge.
Minimum reading must be 120°F/49°C.
Recommended optimum temperature
is140°F/60°C.
Operate the dishwasher through 2
complete cycles to increase the wash
temperature
to 140°F/60°C optimum. Check the
temperature gauge reading on the front of
the dishwasher
6.
7.
8.
9.
Open doors completely and slide pre-scrapped rack of dishes into dishwasher.
Check that control panel green light is out.
Close doors to automatically start the cycle. Total cycle time is 90-seconds.
The final rinse cycle begins after the dishwasher washes and then drains.
The rinse-aid and sanitizer are automatically added to the wash tank.
10. Use a sodium hypochlorite (Chlorine) based sanitizer at a minimum concentration of 50PPM in the final
rinse. Routinely check the 50PPM chlorine level with test strips (supplied by chemical supplier).
Note:
Wash temperature should be a minimum of 140oF/60oC for optimum wash performance.
Final rinse temperature should be a minimum 120-140oF/49-60oC for optimum sanitizing.
11. Cycle ends when green cycle light goes out.
12. Open door. Remove the clean rack of dishes and insert another rack of soiled dishes.
13. Repeat steps 5-12 until all wares are clean.
36
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How to Clean your Dishwasher • MD-1000LT
________________________________Installation Guide
;ꢀ
How to Clean the MD-1000LT
1. Leave the machine power switch in the ON position. Doors are fully closed.
2. Push and hold the “FILL/DRAIN” switch down in the “DRAIN” position for approximately
15-20 seconds. The water in the wash tank will drain completely.
3. Raise doors fully. Use caution, as metal surfaces may be hot. Allow interior to cool.
4. Rinse the interior of the dishwasher with fresh water. Wipe the interior with a soft cloth.
Do not scrub the interior with scouring pads, nor harsh detergents.
5. Close the doors fully; the dishwasher will begin a normal cycle. At the end of the cycle,
Push & hold the Fill/drain switch in the DRAIN position until the wash tank is empty
6. Flip the dishwasher power switch to the OFF position
7. Remove and clean circular wash tank screen.
8. Check the overflow /drain assembly. Ensure the drain seat is clean.
9. Loosen the upper and lower thumbscrews (Do not remove the screws)
Remove upper and lower sprayarms. Flush the sprayarm nozzles and check the
bearing o-rings.
10. Replace sprayarms (they are interchangeable) and tighten thumbscrews.
11. Replace circular tank screen.
12. Remove lower scrap screen. Empty debris and flush both sides with fresh water.
13. Check the drain pan and flush with clean water.
14. Wipe the exterior of the dishwasher with a soft cloth.
Do not hose the exterior with water nor scrub with scouring pads or harsh detergents.
15. Replace lower scrap screen, circular screen, and leave doors open for overnight drying.
16. Check the chemical supplies to ensure there are adequate supplies for the next shift.
37
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How to Clean your Dishwasher • MD-1000LT
Installation Guide ____________
;ꢀ
How to Clean the MD-1000LT
Deliming
Warning:
Electrocution or chemical burns may occur if untrained persons attempt the deliming
procedure.
Only qualified service personnel should delime the dishwasher.
1. The DL-1000 is equipped with a delime switch on the left front side inside
the top-mounted control cabinet.
2. After all necessary preparations have been performed in accordance with
the chemical supplier's instructions, the chemical supplier or qualified
service agent may operate the delime switch to lock the dishwasher in a
continuous wash mode.
3. Flip the delime switch down to the
wash position when the deliming is
complete.
38
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How to Maintain your Dishwasher
__________________________ Installation Guide
;ꢀ
How to Maintain your Dishwasher MD-1000LT
Thoroughly cleaning your dishwasher
every day is very best maintenance
you can do!!
Daily Maintenance
1.
2.
3.
4.
5.
Keep your dishwasher and the surrounding area spotlessly clean.
Immediately report loose, broken or missing parts to your supervisor.
Check drains for flow restrictions.
Check the dishwasher for leaks.
Operate the dishwasher as explained in this manual.
Monthly Maintenance
1.
2.
3.
4.
5.
6.
Inspect pump hoses, door linkage, springs, and exterior of dishwasher for wear.
Inspect the wash arm bearings and O-rings.
Check the condition of scrap screens,. and dishracks for bent or broken pieces.
Check the toggle switches and indicator lights for damage.
Check the wash pump motor for loud bearings and leaking pump seal.
Create a simple Maintenance Tracking System as a guide for service
Annual Maintenance
Call your authorized service agent or local service representative and schedule
a complete inspection of your dishwasher by a trained professional.
A Maintenance Tip -
Schedule your annual maintenance when you can give the service
agent unrestricted access to the dishwasher for at least 2 to 2-1/2 hours.
39
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The Troubleshooter • MD-1000LT
The Troubleshooter
In order to find the cause of a breakdown or abnormal operating condition in your dishwasher please
ensure that:
1. All power switches are ON
2. Drain overflow tube is in place and seated
3. Wash pipe and rinse nozzles are clean
4. Spray arms are in their proper positions
5. Round screen is properly positioned
6. Detergent, sanitizer and rinse aid dispensers are adequately filled
8. Doors are fully closed.
That wasn't it? Check for a solution below:
PROBLEM
CAUSE
SOLUTION
Cycle will not start
Door not closed ........................... Make sure doors are fully closed
Door safety switch faulty ............. Contact your service agency
Main switch off ............................. Check disconnect
Low or no water
Main water supply is turned off ... Turn on house water supply
Drain/overflow tube is not
in place and seated ..................... Clean, replace and seat drain tube
..................................................... as needed.
Faulty fill valve ............................. Contact your chemcial supplier.
Continuous water filling
Motor not running
Fill valve will not close ................. Clean or replace
Defective contactor ..................... Contact your servicer
Defective motor ........................... Contact your servicer
Wash tank water temperature ..................................................... Incoming water temperature
is low when in use
..................................................... at machine too low
..................................................... Raise temperature to 140°F/60°C
Defective thermometer ................ Check or replace
Defective solenoid valve ............. Check or replace
Arms not rotating
Rinse nozzles not clean .............. Clean
Bearings worn.............................. Replace
Water supply pressure low ......... Check incoming water pressure
Insufficient pumped spray
pressure
Clogged intake screen ............... Clean
Clogged spray pipe ..................... Clean
Low water level in tank ................ Check drain and overflow tube, timer may
..................................................... need adjustment, contact servicer
Defective pump seal.................... Contact service agent
Insufficient rinse or no
rinse
Faulty pressure regulating valve . Clean or replace
Improper setting on pressure
regulating valve ........................... Set static pressure to 35 psi
Clogged rinse nozzle and/or
pipe .............................................. Clean with paper clip/delime
Improper water line size .............. Have installer change to proper size 3/4" NPT
40
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The Troubleshooter • MD-1000LT
The Troubleshooter (continued)
PROBLEM
CAUSE
SOLUTION
Low final rinse temperature Low incoming water ................... Check valve to be sure it is clean and
..................................................... operating.
Defective thermometer ............... Check for proper setting or replace
Machine leaking
Leaking at chemical hose .......... Replace hoses
Pump seal leaking...................... Replace seal
Leaking at pump hose ............... Contact your chemical supplier
Leaking at doors ......................... Check to make sure that doors are fully closed
Water splashing out door
Nozzles/End caps missing ........ Replace caps
Wash nozzles blocked ................ Clean
Arms not rotating......................... Replace bearings
Door handle twisted
(pass through) ............................ Adjust or replace handle
Poor washing results
Detergent dispenser not
operating properly ....................... Contact detergent supplier
Insufficient detergents ................ Contact detergent supplier
Food Soil concentration too
high in wash tank ........................ Prescrap dishes throughly
Wash water temperature
too low ......................................... See condition “Wash Tank
Water Temperature” above
Wash arm clogged ..................... Clean
Improperly scraped dishes ........ Check scraping procedures
Ware improperly
placed in rack .............................. Use proper racks. Do not overload racks
Improperly cleaned
equipment ................................... Unclog wash sprays and rinse nozzles
to maintain proper pressure and flow
conditions. Overflows must be open.
Keep wash water as clean as possible.
41
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MD-1000HT and MD-1000LT • Service Replacement Parts
___________ Service Replacement Parts
Models MD-1000HT • MD-1000LT
Illustrations
Page
Wash pump/motor assembly _______________________________________________
MD-1000HT • Built-in booster assembly ______________________________________
MD-1000HT • Control cabinet enclosure ______________________________________
MD-1000HT • Conrtol cabinet assembly ______________________________________
MD-1000LT • Control cabinet enclosure with chemical dispensing pumps ____________
MD-1000LT • Control cabinet assembly _______________________________________
45
47
49
51
53
55
57
Top mounted assemblies __________________________________________________
(water inlet airgap, chemical injection sight-glass, door safety switch)
Lower wash tank and drain assembly ________________________________________
Hood assembly __________________________________________________________
Front panel, temperature gauges, scrap screen covers___________________________
Dishrack track assembly___________________________________________________
Sprayarm assembly ______________________________________________________
59
61
63
65
67
43
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Wash pump/motor assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
-----------
-----------
0512015
0512015-2
0512015-3
0512015-4
114134
capacitor 50uf/240VAC, (VC1000-HT 240V/1)
1
1
1
1
1
1
1
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
---
2
capacitor 15uf/450VAC, (VC1000LT 115V)
complete motor/pump assy , 115VAC/60/1
3
complete motor/pump assy , 220/60/1
4
complete motor/pump assy , 220/60/3
5
complete motor/pump assy , 220/50/3
water slinger
nut
6
7
114135
10
8
114136
screw
10
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
9
114137
pump support
gasket
10
11
12
13
14
15
16
17
18
19
20
21
22
23
114138
114139
pump seal
114140
washer
114141
114142
impeller
washer
114143
lock washer
impeller nut
pump housing
o-ring
114144
114145
114146
114147
cap nut
0310943
107340
0510942
0510941
pump motor support
hose clamp
discharge hose
suction hose
44
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Service Replacement Parts
Wash pump/motor assembly
1/4-20 locknut
1/4" washer
1/4-20 locknut
1/4" washer
20
1/4-20 x 3/4"
1/4 x 20 washer
21
22
21
21
23
21
45
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Built-in booster assembly • MD-1000HT
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
109985
111233
112059
107908
110768
100184
111437
108516
109903
102444
113178
113269
114121
100571
101525
110562
113622
110929
100930
0509042
101210
109069
0512027
booster element o-ring
1
1
1
1
1
4
1
1
1
1
1
1
7
1
1
1
1
1
1
1
1
1
1
1
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ft.
2
booster heater, 220V/60/1 & 3 9kW, 40°F rise
booster heater, 220V/60/1 & 3 12kW, 70°F rise
booster element cover
3
4
5
3/4" brass line strainer
6
3/4" brass close nipple
3/4" solenoid valve 115VAC
3/4" water solenoid valve coil
3/4" water solenoid rebuild kit
3/4" brass street elbow
3/4" barb fitting
7
Nshown
Nshown
8
9
10
11
12
13
14
15
16
17
18
19
20
21
hose clamp
3/4" ID red hose
3/4" brass union
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
Tee reducing 3/4" x 1/2" x 3/4"
fixed high limit thermostat
final rinse thermometer 4 ft. capilliary
high limit box
high limit box panel
booster cannister
1/8" brass plug
temperature control thermostat
bushing
Nshown 107922
control thermostat metal box and base plate
46
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Service Replacement Parts
Built-in booster assembly • MD-1000HT
1
3
2
4
5
11
6-32 x 1/4" screw
6-32 washer
10
6
17
7
10-32 nylon insert nut
and washer
8
9
16
13
12
6
14
15
21
20
18
19
47
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Control cabinet enclosure • MD-1000HT
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
2
3
4
5
6
7
8
9
10
0310962
control cabinet cover
power switch
1
1
1
1
1
1
1
1
1
1
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
0510398
0508551
green cycle light
fill and drain switch
0510399
0510399
detergent /rinse-aid prime switch (optional)
control cabinet
0310959
0510833-8
0510833-10
0510825-1
0510824-1
standard control panel decal w/o prime switch
optional control panel decal w/ prime switch
cycle counter
control cabinet lock w/ 2 keys
48
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Service Replacement Parts
MD-1000HT • Control cabinet enclosure
1
10
3
2
4
1/4-20 x 1/4"
truss-head screw
5
6
9
1/4-20 x 1/4"
truss-head screw
7
8
Hood
49
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MD-1000HT • Control cabinet assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
0501403
0501533
0501472
0501493
0504951
105514
106402
0503749
0512025
0510825-1
0510398
0508551
0510399
0510399
111036
brass screw
brass nut
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
----
----
----
2
brass 1/8” flat washer
brass lock washer
terminal block
3
booster heat contactor
fuse block
4
5
terminal board
6
90-second timer assy
cycle counter
7
8
power switch
9
green cycle light
10
----
11
12
13
14
15
16
17
18
fill/drain switch
optional detergent/rinse-aid prime switch
relay socket
111068
120VAC relay
109604
108122
110806
step down transformer
12 Amp motor contactor
motor overload
111026
door safety switch magnet
door safety reed switch
ADTR-1.5 Amp fuse
111090
112484
50
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Service Replacement Parts
MD-1000HT • Conrtol cabinet assembly
6
1
5
18
3
4
2
17
16
7
15
14
11
12
13
10
8
10
9
51
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Control cabinet enclosure • MD-1000LT
with chemical dispensing pumps
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
0310962-1
0510872-1
0510870-1
0510869-1
108412
control cabinet cover
1
2
ea
ea
ea
ea
ea
feet
feet
feet
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
2
sanitizer & rinse aid pump mtr. 115VAC, 14RPM
detergent pump motor, 115VAC, 108 RPM
pump head assy.
tube clamp
3
1
4
3
5
14
20
16
16
4
6
107928
clear sanitizer feed tubing
blue rinse-aid feed tubing
red detergent feed tubing
control cabinet leg
control cabinet bottom
power switch
7
107930
8
107929
9
0312062
0310959-1
0501398
0508551
0510399
0501373-1
0510825-1
0510833-5
0503695
0505483
0503694
0306363
0501869
108194
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
1
green cycle light
1
momentary switch
delime switch
3
1
cycle counter
1
decal
1
detergent label
1
rinse-aid label
1
sanitizer label
1
stiffener tube
3
strainer
3
squeeze tube assy
lock w/ 2 keys
3
0510824-1
1
52
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Service Replacement Parts
MD-1000LT • Control cabinet enclosure
with chemical dispensing pumps
23
1
13
12
14
2
11
3
Inner panel
cut-out
19
1/4-20 x 1/4"
truss-head screw
18
17
15
16
10
4
20
22
1/4-20 x 1/4"
truss-head screw
5
21
Sanitizer = white
6
9
Rinse-aid = blue
7
8
Detergent = red
Hood
53
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MD-1000LT • Control cabinet assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
0501403
0501533
0501472
0501493
0510635
107369
brass screw
brass nut
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
----
----
----
2
brass 1/8” flat washer
brass lock washer
terminal block
3
pump motor contactor 25 FLA
relay socket
4
111036
5
111068
120VAC relay
6
0512018
0501373-1
0510825-1
0510398
0503749
0501399
0508551
0510398
111090
90-second timer
delime switch
7
8
cycle counter
8
power switch
9
terminal board
10
11
12
13
14
momentary toggle switch
green cycle light
power switch
door safety reed switch
door safety switch magnet
111026
54
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Service Replacement Parts
MD-1000LT • Conrtol cabinet assembly
2
1
3
4
6
5
14
13
7
9
8
See page 52-53 for chemical dispenser
pumps
DETERGENT
SANITIZER
10
FILL
10
10
RINSE AID
DRAIN
POWER
ON
11
12
CYCLE
OFF
55
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Top mounted assemblies
Service Replacement Parts
water inlet airgap chemical injection sight-glass,
door safety switch
Item No.
Part No.
Description
Qty.
Unit
1
102442
102444
100156
0310422-2
0512021
0312014
0303590
0510987
107930
107929
107928
111026
90 degree x 3/4" elbow
1
1
ea
ea
2
90 degree x 3/4" street elbow
3/4" locknut
3
1
ea
4
water inlet bracket
1
ea
5
air gap fitting
1
ea
6
water diverter
1
ea
7
sight-glass retaining plate
sight-glass
1
ea
8
1
ea
feet
feet
feet
ea
9
blue rinse-aid feed tube
red detergent feed tubing
clear sanitizer feed tubing (MD-1000LT only)
door safety magnet
16
16
20
1
10
11
12
13
14
15
16
17
18
111090
door safety switch
1
ea
0312046-2
0712046
111437
splash guard (MD-1000HT only)
valve mount bracket
1
ea
1
ea
3/4" solenoid valve (MD-1000LT top mounted)
3/4" solenoid coil 115VAC
3/4" solenoid valve rebuild kit
1
ea
108516
109903
1
ea
1
ea
56
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Service Replacement Parts
Top mounted assemblies
water inlet airgap, chemical injection sight-glass,
door safety switch
18
17
16
Low Temp
15
1
2
11
3
4
15
10
11
9
12
8
5
14
13
6
7
57
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Lower wash tank and drain assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
0512012
0510849
202009
drain overflow tube
retaining ring
pin
1
2
2
1
1
1
1
1
1
1
1
1
1
1
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
2
3
4
0510497
107440
drain ball
5
thermometer w/ 8 ft. capillary (MD-1000HT)
pump screen
6
0510249
0510845-1
0510846-1
0312017
0310771-3
0510773-1
0510400
0710739-2
0510202-3
7
2" stem thermometer (MD-1000LT)
reducing bushing
8
9
drain solenoid cover
drain lift rod
10
11
12
13
14
lift rod guide
drain solenoid
drain sump
sump gasket
58
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Service Replacement Parts
Lower wash tank and drain assembly
1
2
3
5
4
6
High Temp
Thermometer
12
Use Item 5
7
8
3
Low Temp
Thermometer
and I DH200
9
12
11
10
3
59
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Hood assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
0712060-2
0510844-1
0712060-1
0712060-3
0312061
right-hand door
door guide
1
6
1
1
4
2
2
4
2
1
2
2
2
4
2
2
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
2
3
front door
4
left-hand door
door lift bracket
pivot plate
5
6
0310792-1
0510791-1
0310781-1
0510459
7
pivot plate gasket
door pivot hook
door spring
8
9
10
11
12
13
14
15
16
0510799-1
0501421
door handle
door handle mounting bolt
handle grip
107962
0301789-1
0510788-1
0510787-1
0310788-1
door lift bar
pivot bushing
white spacer
door handle pivot
60
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Service Replacement Parts
Hood assembly
1
2
2
4
2
8
2
8
2
9
3
9
16
8
10
15
14
11
7
13
12
8
6
5
61
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Front panel, temperature gauges
scrap screen covers
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
2
3
4
5
6
7
0312011
0312029-1
0312029
0312010
0310979
113622
front panel clip
2
1
1
1
1
1
1
ea
ea
ea
ea
ea
ea
ea
rear drain pan cover
front drain pan cover
front panel (MD-1000HT only)
scrap basket
final rinse temperature thermometer w/ 4 ft. capillary
wash temperature thermometer w/8 ft. capillary
107440
62
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Service Replacement Parts
Front panel, temperature gauges,
scrap screen covers
1
2
RINSE
WASH
3
6
7
4
5
63
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Dishrack track assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
2
3
4
5
6
7
0309472-4
0309472-3
0309470-3
0309472-6
0309472-5
101273
front track
rear track
cross tube
1
ea
ea
ea
ea
ea
ea
ea
1
1
cross track splash guard
track rail
2
1
flat-bottom silverware rack
peg rack dishware
A/R
A/R
101285
A/R = as requested
64
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Service Replacement Parts
Dishrack track assembly
65
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Sprayarm assembly
Service Replacement Parts
Item No.
Part No.
Description
Qty.
Unit
1
0510743-1
upper wash hub
thumbscrew
1
2
4
1
2
2
2
1
1
2
ea
ea
ea
ea
ea
ea
ea
ea
ea
ea
2
0510495
114153
3
sprayarm end plug (remove for cleaning)
spray pipe
4
0510774-2
0510849
114133
5
spray pipe o-ring
6
sprayarm bearing o-ring
thumbscrew bushing
lower wash hub
7
0512063
0510741-1
0510769-1
-----------
8
9
lower wash hub gasket
sprayarm bearing assembly
10
66
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Service Replacement Parts
Sprayarm assembly
67
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Appendix A
________________________ Appendix A:
Specification Sheets
Models MD-1000HT • MD-1000LT
Note:
This section was not available at print time.
The specification sheets will be added
as soon as possible.
69
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MD-1000HT and MD-1000LT • Electrical schematics/Timer cycle charts
________________ Electrical Schematics
and Timer Cycle Charts
Models MD-1000HT • MD-1000LT
71
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Electrical schematics/Timer cycle chart • High temperature model
73
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Electrical schematics/Timer cycle chart • Low temperature model
74
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