AJ-44 Rack Conveyor Dishmachine
Maintenance Instructions
Changing Conveyor
Direction
07610-003-04-72 A
March 30, 2005
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a 7/16” combination wrench or 7/16” nutdriver will be required in 6. Remove the pawl bar and set to the side.
order to hold the bolt head inside the control box.
Remove the pawl bar by grapsing firmly and
lifting up.
Removing bracket (bottom view)
7. Remove the lower wash arm assembly by turning the locking
screw to unlatch it. The entire assembly should then lift out.
Removing bracket (control box view)
Remove the locknuts from the opposite bolts used to hold down the
control box (do not remove the bolts) and secure the bracket to
underside of the hood. The folded part of the bracket should be fac-
Locking screw
ing the rear of the machine. Immediately tighten down the locknuts. 8. Remove the lower wash arm support bracket. Place it to the side
with its locknuts.
5. Remove the splash shield, which is bolted to the underside of
the hood next to the wash manifold and turn it 180°.
Removing the locknuts for the lower wash arm
support bracket.
Removing and turning splash shield
AJ-44 Conveyor Direction Change Instructions
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9. Remove the lower rinse arm support bracket, which is mounted 12. Remove the nuts from the rinse manifold mounting bracket
directly opposite of the lower wash arm support bracket.
located on the underside of the hood. These nuts are mounted
directly to the rinse injector weldment on the hood top.
Removing the locknuts from the rinse mani-
fold mounting bracket
Removing the lower rinse arm support bracket
10. Remove the lower and upper rinse arms by unscrewing them 13. The rinse manifold must be removed. This may prove difficult
and then gently pulling them out.
while the rinse injector is still mounted. With great care, it is possi-
ble to gently lift the rinse injector off of the hood to allow the rinse
manifold to be removed from the unit. Ensure that the gasket in the
underside of the hood stays with the rinse manifold as it must be
replaced when re-installing the manifold. If the gasket becomes
lost or torn, order a new one immediately.
Unscrewing and removing the lower rinse arm
11. Behind the rinse manifold, remove the nut on the bracket.
Lifting the rinse injector to make room
14. Remove the entire rinse tray assembly, including the pan and
the strainer within in. The assembly should lift right out. (See next
page for photograph detailing this step)
15. Remove the front and rear rinse pan locator brackets. Note:
the brackets are mounted to the bolts that secure the tub
weldment to the frame. Once the locknuts are removed, pull the
locator brackets off and immiediately replace the locknuts back
onto the bolts. Failure to do so at a minimum may cause excessive
leaking of the tub once the unit is placed back in operation.
Removing the bracket nut
AJ-44 Conveyor Direction Change Instructions
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17. The tee that the rinse drain nipple is in must be turned 180° so
that it is facing the opposite direction. This may require dismantling
the plumbing by removing the tee with the wash drain barb in it. Put
the plumbing back together, after ensuring that the rinse drain tee
has been rotated. Use thread tape to protect the threads while put-
ting the plumbing back together. Ensure that the wash drain barb
is in the exatc same position it was prior to this step.
18. On the underside of the tub, remove the rinse drain weldment
and the rinse drain plug. Switch their locations so that the rinse
drain weldment is in the spot that the rinse drain plug was in.
Lifting out the rinse tray assembly
Removing the rinse drain weldment
Removing a rinse tray guide bracket
16. On the drain plumbing, the rinse drain tube needs to be
removed from the plumbing, as well as the wash drain tube. Both
of these tubes are secured with hose clamps. Loosen the hose
clamps and pull the tubes off.
Removing the rinse drain plug
19. Reconnect the rinse drain hose and the wash drain hose to the
drain plumbing.
20. On the opposite end from where they were removed, install the
front and rear rinse pan assembly locating brackets. Note: the
brackets are mounted to the bolts that secure the tub weld-
ment to the frame. Install the brackets one at a time and ensure
that they are firmly tightened down once installed.
Loosening the rinse drain hose from the rinse
drain nipple
21. Remove the hole cover weldment from the top of the hood. The
cover is located on the end of the hood opposite of the rinse injec-
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tor weldment. Once removed, set to the side along with its gasket. 28. Re-install the lower wash arm support bracket to the pawl bar
support on the end of the tub opposite from where it was removed.
29. Re-install the upper and lower rinse arms. Reinstall the lower
rinse arm support bracket.
30. Re-install the lower wash arm assembly, turning it 180° and
locking it in place with the locking screw.
31. Re-install the pawl bar. Ensure that the pawl bar is placed so
that when racks are placed in the unit, the pawl bar dogs fold down.
32. Re-install the upper wash arm assembly. If you performed all of
the actions outlined in step 2, when you install it, it will be directly
over the lower wash arm assembly.
33. Remove the heater box cover by unscrewing the four screws
holding it on.
Removing the hole cover weldment
22. Separate the rinse plumbing from the rest of the incoming
plumbing by loosening the union. Ensure that the gasket on the
bottom of the rinse injector stays with the assembly as you remove
it.
Removing the heater box cover
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Loosening the union on the incoming plumbing
23. Remove the remaining half of the union from the incoming
plumbing.
24. Remove the incoming water pressure regulator from the incom-
ing plumbing and replace with the union half that was removed in
step 23. Place the water pressure regulator on the end that the
union half was removed from.
25. Place the removed rinse plumbing assembly (with the gasket)
in the hole left open from when you removed the hole cover weld-
ment in step 21. Tighten the two halves of the union together.
26. Place the hole cover weldment (with its gasket) over the hole
from where the rinse plumbing assembly was originally installed.
Tighten down with the locknuts.
Front of rack conveyor showing the conveyor
switches
27. Re-install the rinse manifold (with its gasket) by connecting it to
the rinse injector weldment at its new location. Remove the locknut
from the stud for the bracket down near the rack rails and then
secure the bracket to the machine using the same lock nut.
AJ-44 Conveyor Direction Change Instructions
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Conveyor Switch Chart:
Unit
Switch #1
Switch #2
Switch #3
Direction
Left to Right Wash Switch #1 Wash Switch #2 Rinse Switch
Wash Switch
Right to Left Rinse Switch Wash Switch #2
#1
Incoming plumbing assembly for a Left to Right machine
(note hole cover weldment in lower right corner)
The chart above lists the conveyor switches and their functions,
depending on the direction fo travel for the machine. As you can
see, when you change the direction of the conveyor, you must also
alter the way the conveyor switches operate.
There is no need to remove the switches, only to change the wiring
inside the heater box.
Incoming plumbing assembly for a Right to Left machine
(note hole cover weldment in upper left corner)
Terminal board inside the heater box
35. Re-install the heater box cover.
AFTER MAINTENANCE ACTIONS
34. Note: Before beginning any part of this maintenance evolution
that deals with the wiring of the machine, ensure that it is per-
formed by qualified technicians only. Always refer to the machine
schematic, located inside the control box, for any questions.
1. Reconnect the incoming water and drain lines and then
restore power to the unit. Run the unit for at least 1/2 hour to
ensure there are no leaks. Test the unit with an empty rack to
ensure that it pulls the rack all of the way through the unit. If any
problems arise you can contact Jackson Technical Service.
2. Replace the front dress panel once the unit is ready for
service again.
Wash Switch #1 and the Rinse Switch need to have their wire posi-
tions changed on the terminal board pictured above. Locate the
gray/yellow wire for Wash Switch #1 (do not confuse it with the
gray/yellow wire for Wash Switch #2) and the orange/yellow wire
for the Rinse Switch. Exchange their positions on the terminal
board.
SPECIAL NOTES
1. There is a possibility that you may be required to short-
en or lengthen the conduit and wire lengths for the inlet solenoid
on the rinse plumbing once it is moved. This work should be per-
formed by qualified technicians who will do the work according to
applicable local, state and national codes. Questions concerning
this should be directed to Jackson Technical Service.
35. Verify that the plumbing has been reassembled correctly and
that the hole cover weldment has been replaced and none of the
gaskets are torn or pinched as this could lead to leaking when the
machine operates.
AJ-44 Conveyor Direction Change Instructions
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2. Work performed on Jackson dishmachines by unautho-
rized or unqualified personnel may void the warranty. Before begin-
ning this or any other maintenance evolution on a unit under war-
ranty, you should contact a certified Jackson technician or Jackson
Technical Service. You can find a list of qualified service agencies
in the back of you unit’s installation manual.
SPECIAL PARTS
Gasket, Rinse Injector:
Order using part number 5330-111-42-81
CONTACT INFORMATION
Jackson MSC Inc. provides technical support for all of the
dishmachines detailed in this manual. We strongly recommend that
you refer to this manual before making a call to our technical sup-
port staff. Please have this manual with you when you call so that
our staff can refer you, if necessary, to the proper page. Technical
support is available from 8:00 a.m. to 5:00 p.m. (EST), Monday
through Friday. Technical support is not available on holidays.
Contact technical support toll free at 1-888-800-5672. Please
remember that technical support is available for service personnel
only.
AJ-44 Conveyor Direction Change Instructions
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