Owner’s Operator and Maintenance Manual
MA50 Series
MA50 Alternating Pressure
Overlay System
MA51 Alternating Pressure
Mattress System
MA55 Alternating Pressure
Low Air Loss Mattress System
DEALER: This manual MUST be given to
the user of the product.
USER: BEFORE using this product, read this
manual and save for future reference.
For more information regarding
Invacare products, parts, and services,
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TABLE OF CONTENTS
TABLE OF CONTENTS
Electrical Parameters.................................................................................................................................5
Performance Parameters..........................................................................................................................5
Smoking....................................................................................................................................................9
Connecting the Power Cord.................................................................................................................13
Using the Front Panel..............................................................................................................................14
Firm/Soft Buttons.................................................................................................................................16
Power Fail LED.....................................................................................................................................17
Low Pressure LED...............................................................................................................................18
Transferring Patient From/To a Gurney.............................................................................................19
About Power Outage and Transportation.........................................................................................20
Part No 1148136
3
MA50 Series
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TABLE OF CONTENTS
TABLE OF CONTENTS
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MA50 Series
4
Part No 1148136
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TYPICAL PRODUCT PARAMETERS
TYPICAL PRODUCT PARAMETERS
Electrical Parameters
MA50/MA51/MA55
INPUT VOLTAGE AC:
INPUT FREQUENCY:
CURRENT:
90 V
60 Hz
1 A
5 ± 3 W
MAXIMUM POWER CONSUMPTION:
CIRCUIT PROTECTION:
MODE OF OPERATION:
Dual fused, 250 V, 1 A fast blow fuses
Continuous
Performance Parameters
MA50/MA51/MA55
WEIGHT CAPACITY
STANDARD MATTRESS:
BARIATRIC MATTRESS:
PRESSURE ZONE:
MAXIMUM FLOW:
MAXIMUM FLOW PRESSURE:
MAXIMUM FLOW TIMER:
SUPPORT SURFACE INFLATION TIME:
350 lbs
1000 lbs
2
8 ± 4 LPM
35 ± 5 mmHg
45 minutes
20 - 45 minutes
PATIENT COMFORT CONTROL PRESSURES
SOFT PRESSURE:
FIRM PRESSURE:
8 ± 4 mmHg
32 ± 4 mmHg
5, 10, 15, 20 minutes
CYCLE TIME:
PATIENT CONTACT:
Control unit and mattress have Latex-Free
components
Mechanical Parameters
CONTROL UNIT
MA50
MA51
MA55
DIMENSIONS
(L X W X H):
9” x 5” x 5”
WEIGHT:
5 lbs
POWER CORD:
CONNECTION:
PACKAGING:
AIR FILTER:
10 - 14 Feet Long, Hospital Grade
Two ¼” Flow Couplings
1 piece/box
None
Three ¼” Flow Couplings
5
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TYPICAL PRODUCT PARAMETERS
Environmental Parameters
MA50/MA51/MA55
OPERATING CONDITIONS
AMBIENT TEMPERATURE:
RELATIVE HUMIDITY:
50° - 104° F
30% - 75% Non-Condensing
70 - 106 kPa
ATMOSPHERIC PRESSURE:
STORAGE AND SHIPPING CONDITIONS
AMBIENT TEMPERATURE:
RELATIVE HUMIDITY:
-40° - 158° F
10% - 100% Non-Condensing
50 - 106 kPa
ATMOSPHERIC PRESSURE:
6
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LABEL LOCATION
LABEL LOCATION
DANGER-EXPLOSION HAZARD: DO NOT use in the presence of
flammable anesthetics.
CAUTION: Equipment should be connected to a properly grounded
receptacle (3-prong). Risk of Electrical shock. DO NOT remove
back. Disconnect air hose before administering CPR.
NOTE: This label is on the back of
the unit and also contains the
serial number.
ꢀ WARNING
Patient entrapment with bed side rails may cause injury or death. Mattress
MUST fit bed frame and side rails snugly to prevent patient entrapment.
Follow the manufacturer’s instructions. Monitor patient frequently. Read
and understand the Owner’s/Operator’s Manual prior to using this
or your dealer.
Label part number 1150708 Rev A
7
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SECTION 1—GENERAL GUIDELINES
SECTION 1—GENERAL GUIDELINES
ꢀ WARNING
SECTION 1 - GENERAL GUIDELINES contains important information for the safe
operation and use of this product.
Contraindications
ALWAYS consult the patient’s physician before using the MA50, MA51 and MA55 systems.
Installation
The MA50, MA51 and MA55 systems MUST be installed on medical bed frames with side
rails. The side rails MUST be in the raised position whenever a patient is on the bed.
Controls on the footboard may be obstructed by the power unit on a few bed frames. It may
Check that air hoses and power cord are clear of moving bed components before placing a
patient on the bed. Operate all bed frame motorized functions through their full range of
motion to be certain that there is no pulling, interference or pinching.
MA51 AND MA55 ONLY - DO NOT strap the mattress to the bed frame at the head and
foot ends. Secure ALL mattress straps. Secure the straps to the bed deck at the head and foot
ends and to the frame at the center of the bed. Otherwise damage to the mattress will occur
when the head and foot ends are raised. Refer to Installing the Mattress on page 10.
Entrapment May Occur
ꢀ WARNING
Patient entrapment with bed side rails may cause injury or death. Mattress MUST
fit bed frame and side rails snugly to prevent patient entrapment. Follow the
manufacturer’s instructions. Monitor patient frequently. Read and understand the
Owner’s/Operator’s Manual prior to using this equipment. Invacare product
Proper patient assessment and monitoring, and proper maintenance and use of
equipment is required to reduce the risk of entrapment. Variations in bed rail
dimensions, and mattress thickness, size or density could increase the risk of
entrapment. Review “A Guide to Bed Safety”, published by the Hospital Bed Safety
product entry to access this bed safety guide.
Refer to the owner’s manuals for beds and rails for additional product and safety
information.
After any adjustments, repair or service and before use, make sure all attaching
hardware is tightened securely. Assist rails with dimensions different from the
original equipment supplied or specified by the bed manufacturer may not be
interchangeable and may result in entrapment or other injury.
8
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SECTION 1—GENERAL GUIDELINES
Fire Hazard
ꢁ DANGER
Smoking
DO NOT SMOKE while using this device. This system uses room air for circulation
through the mattress. A cigarette can burn a hole in the bed surface and cause
damage to the mattress. Also, patient clothing, bed sheets, etc. may be combustible
and cause a fire. Failure to observe this warning can result in severe fire, property
damage and cause physical injury or death.
Smoking by visitors in the room will contaminate the system. Therefore, visitor
smoking is NOT permitted.
Anesthesia Equipment
There is an explosion risk if used with flammable anesthetics.
Oxygen
There is a possible fire hazard when used with oxygen administering equipment
other than nasal mask or half bed tent type. The oxygen tent should NOT extend
below mattress support level.
Electrical
ꢁ DANGER
Electrical shock hazard. DO NOT remove cover. Refer to qualified service
personnel.
Before performing any maintenance to the power unit, disconnect the power cord from the
wall outlet.
DO NOT insert items into any openings of the control unit. Doing so may cause fire or
electric shock by shorting the internal components.
The control unit MUST be kept away from all heat sources and radiators during operation.
Connect the equipment to properly grounded three prong wall outlet using 10-14 ft hospital
grade power cord provided with the product.
Grounding reliability depends upon a properly grounded receptacle (3-prong).
9
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SECTION 2—OPERATION
SECTION 2—OPERATION
CAUTION
The control unit and mattress on the MA50 series are designed to be used as a
system. DO NOT replace mattresses or control units with other models or other
brands. Otherwise, damage to the system may occur. Contact your supplier to get
the correct replacement if needed.
Installing the Mattress
Overlay System (MA50)
NOTE: For this procedure, refer to FIGURE 2.1.
NOTE: The overlay system comes with the following straps - head end elastic strap, foot end elastic
strap and two buckle straps.
1. If necessary, lower the side rails to facilitate installation of the mattress.
2. Place the mattress overlay directly over the existing 3 to 5-inch foam mattress.
3. Loop the head end elastic strap around the head end of the existing foam mattress.
4. Loop the foot end elastic strap around the foot end of the existing foam mattress.
5. Secure the overlay mattress to the existing foam mattress using the two buckle straps.
NOTE: Ensure that the side rails can move freely.
Mattress
Overlay
Head End
Elastic Strap
Foam
Mattress
Foot End
Elastic Straps
10
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SECTION 2—OPERATION
Mattress Replacement System (MA51 and MA55)
CAUTION
DO NOT strap the mattress to the bed frame at the head and foot ends. Secure
ALL mattress straps. Secure the straps to the bed deck at the head and foot ends
and to the frame at the center of the bed. Otherwise damage to the mattress will
occur when the head and foot ends are raised.
Head End Bed Deck
Center of Bed Frame
Foot End Bed Deck
DO NOT Strap Here
NOTE: For this procedure, refer to FIGURE 2.2.
NOTE: The powered mattress comes with ten nylon buckle straps.
1. Remove the original foam mattress from the bed.
2. If necessary, lower the side rails to facilitate installation of the mattress.
3. Unroll the powered mattress and place it on the bed frame.
NOTE: Ensure that the hose is towards the foot end of the bed.
4. Use the buckle straps to secure the powered mattress to the bed deck in the following
locations:
• Head End - Head End Bed Deck
• Foot End - Foot End Bed Deck
• Center - Center of the Bed Frame
Head End
Powered Mattress
Buckle
Straps
Hose
Foot End
11
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SECTION 2—OPERATION
Installing the Side Rails
ꢀ WARNING
Patient entrapment with bed side rails may cause injury or death. Mattress MUST
fit bed frame and side rails snugly to prevent patient entrapment. Follow the
manufacturer’s instructions. Monitor patient frequently. Read and understand the
Owner’s/Operator’s Manual prior to using this equipment. Invacare product
NOTE: Refer to the instructions provided with the side rails for the installation procedure.
Installing the Power Unit
NOTE: For this procedure, refer to
Bed Hooks
1. Swing out the bed hooks on the back of
the control unit.
2. Place the control unit on the footboard.
NOTE: If the bed does not have a footboard,
place the control unit on a flat surface, leaving
room for the hose to hang down.
Connecting the Hose
CAUTION
Ensure that the hose connecting the control unit to the mattress is routed such that
it cannot be stepped on, kinked, squeezed or otherwise damaged.
NOTE: For this procedure, refer to FIGURE 2.4 on page 13.
1. Locate the hose at the foot end of the mattress.
2. Locate the control unit connectors on the right side of the control unit.
3. Squeeze and hold the tabs on the hose connectors.
4. Push the hose connectors onto the control connectors until an audible click is heard.
NOTE: The audible click indicates that the hose connectors are properly engaged with the control
connectors.
MA50 Series
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Part No 1148136
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SECTION 2—OPERATION
Control Unit Connectors
Tab
Hose
Connector
Hose
Connecting the Power Cord
ꢀ WARNING
DO NOT alter plug to fit a non-conforming outlet. Instead, have an electrician
install a properly grounded 3-prong outlet. Failure to use the correct plug and outlet
can result in a potential safety hazard.
CAUTION
Ensure that the power cord of the control unit is not pinched, or has any objects
placed on it, and also ensure it is not located where it can be stepped on or tripped
over.
1. Examine the hospital grade power cord supplied with the control unit.
2. Perform one of the following:
• If the plug is damaged - Call your supplier for a replacement hospital grade cord.
• If the plug is not damaged - Plug the end of the supplied hospital grade power cord
into the power outlet on the side of the control unit.
3. Plug the other end of the plug into a properly grounded outlet on the wall.
NOTE: Once the unit is plugged in, an AMBER LED on the control unit is lit indicating that the
system is in STAND BY mode.
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SECTION 2—OPERATION
Using the Front Panel
NOTE: For this procedure, refer to FIGURE 2.5.
DETAIL “A” - MA50 AND MA51 FRONT PANEL
Power Fail LED
Low Pressure
LED
Max Inflate
Button
Fowler
Button
Firm Button
Lock Button
Soft Button
Alarm Silence
Button
Static/Alternating
Pressure Button
Power
Button
LCD
Display
DETAIL “B” - MA55 FRONT PANEL
Power Fail LED
Low Pressure
LED
Mode Button
(Max Inflate/Low
Air Loss)
Fowler
Button
Soft Button
Firm Button
Alarm Silence
Button
LCD
Display
Static/Alternating
Pressure Button
Power
Button
Lock Button
Power Button
1. To turn the control unit on or off, press and release the Power button (
).
NOTE: Once the unit is plugged in, an AMBER LED on the control unit is lit indicating that the
system is in STAND BY mode. Once the Power button is pressed and released, a GREEN LED
illuminates indicating that the control unit is on.
NOTE: If the power comes on after a power outage, the control unit will go through its system
initialization routine for a few seconds and then resume the desired function.
MA50 Series
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SECTION 2—OPERATION
Static/Alternating Pressure Button
1. Press the Alternating Pressure button (
of four Alternating Pressure Times.
) to select between Static Mode and one
NOTE: The alternating pressure times indicate the frequency of deflation or inflation of half of the
air cushions (even or odd numbered). For example, 10 minutes is selected. In this example, the even
numbered air cushions in the mattress will deflate, while the odd numbered cushions remain at
constant pressure. When 10 minutes has elapsed, the even numbered air cushions will inflate while
the odd numbered cushions remain at constant pressure. When 10 minutes has elapsed again, the
odd numbered air cushions deflate while the even numbered cushions remain at constant pressure.
The air cushions continue to inflate or deflate like this as long as an alternating pressure time has
been selected. At all times, half of the air cushions remain at a constant pressure when an
alternating pressure time has been selected.
NOTE: In Static Mode, all air cushions in the mattress are maintained at constant pressure. The
Static LED is illuminated GREEN.
Adjusting the Minimum Pressure Setting (A/P Low)
The minimum pressure setting during Alternating Pressure is set to 0 (2 mmHg) at the
factory. This means that the mattress will deflate as much as possible during the deflation
time when using 10, 15 or 20 minute Alternating Pressure times. The setting can be
changed so the mattress will only deflate to 50% of the selected pressure setting.
1. Ensure the Standby LED is lit.
2. Perform one of the following:
• MA50 and MA51 - Press and hold the Max Inflate and Fowler buttons.
• MA55 - Press and hold the Mode and Fowler buttons.
3. Read the LCD Display. The LCD Display will flash:
• 0 if the current setting is 0 (2 mmHg).
• 5 if the current setting is 50% of the selected pressure.
4. Perform one of the following to toggle between the two settings:
• MA50 and MA51 - Press the Static/Alternating Pressure button.
• MA55 - Press the Static/Alternating Pressure button.
5. Press the Power button to save the setting.
Part No 1148136
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SECTION 2—OPERATION
Firm/Soft Buttons
1. Select comfort pressure settings by pressing Firm (
) or Soft (
) button.
• Soft Button - Pressing this button reduces the pressure setting in the mattress.
• Firm Button - Pressing this button increase the pressure setting in the mattress.
NOTE: The patient comfort pressure ranges from Soft (level 0 = 6±4 mmHg) to Firm (level 9 =
32±6 mmHg). The Comfort Control LED displays the patient comfort pressure levels from 0 to 9
and provides a guide to the caregiver to set approximate comfort pressure level depending on the
patient weight. If the patient’s weight to height ratio is above average, increase the pressure setting
by approximately 20%.
Fowler Button
1. Press the Fowler button (
) to activate the patient fowler mode.
NOTE: The Fowler LED illuminates when in this mode. When this mode is activated, the control
unit increases the pressure in the mattress to prevent the patient from bottoming out.
Max Inflate Button
NOTE: This button is on the MA50 and MA51 only.
1. Press the Max Inflate button (
) to select the Max Inflate mode and inflate the
mattress rapidly to maximum firmness (pressurized to 35 ± 6 mmHg). A series of
beeps sound every three minutes as a reminder that the Max Inflate mode is active.
After 30 minutes, the Max Inflate mode deactivates and the control unit defaults to the
previous setting.
NOTE: It takes 20-45 minutes for the mattress to inflate fully (inflation time depends on size of
mattress).
NOTE: Max Inflate mode can be manually disengaged by pressing the Max Inflate button. This
will deactivate the Max Inflate LED.
NOTE: It is recommended that Max Inflate setting be used during patient ingress/egress, patient
wound care, patient turning or patient cleaning.
2. Press the Max Inflate button again to manually disengage Max Inflate mode.
NOTE: This will deactivate the Max Inflate LED.
MA50 Series
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SECTION 2—OPERATION
Mode Button (Max Inflate/Low Air Loss)
NOTE: The Mode button is on the MA55 system only.
1. Press the Mode button (
mode.
) to select the Max Inflate mode or the Low Air Loss
• Max Inflate Mode - In this mode, the mattress inflates rapidly to maximum
firmness (pressurized to 35 ± 6 mmHg). A series of beeps sound every three
minutes as a reminder that the Max Inflate mode is active. After 45 minutes, the
Max Inflate mode deactivates and the control unit defaults to the previous setting.
NOTE: It takes 20-45 minutes for the mattress to inflate fully (inflation time depends on size
of mattress).
NOTE: It is recommended that Max Inflate setting be used during patient ingress/egress,
patient wound care, patient turning or patient cleaning.
• Low Air Loss Mode - In this mode, the mattress goes into on-demand low air loss
relief mode.
2. Press the Mode button to manually disengage Max Inflate or Low Air Loss mode.
NOTE: This will deactivate the Max Inflate and Low Air Loss LEDs.
Lock Button
1. Press the Lock button (
) to lock out all control unit functions, including the On
button, to prevent any tampering with the settings. Press the button for approximately
3-5 seconds for the Lock LED to activate.
NOTE: The Lock LED illuminates when in this mode.
Alarm Silence Button
1. Press the Alarm Silence button ( ) to silence the alarm that sounds in the event
of power failure or when the hose is disconnected from the control unit.
NOTE: The Alarm LED illuminates when in this mode.
Power Fail LED
In the event of power outage, an alarm sounds and Power Fail LED flashes AMBER. The
control unit has internal memory and retains the previous settings during the power
outage.
NOTE: During a power outage, the mattress retains the air as long as the mattress is connected to
the control unit.
Part No 1148136
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MA50 Series
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SECTION 2—OPERATION
Low Pressure LED
In the event that the mattress hose disconnects, an alarm sounds and Low Pressure LED
flashes AMBER. Once the low pressure problem is fixed, the control unit resumes
operation in the previously set mode.
Powering Up the System
NOTE: For this procedure, refer to FIGURE 2.5 on page 14.
1. Turn on the power to the system by pressing the Power button on the control unit.
NOTE: Once the button is released, a GREEN LED illuminates when the unit is on.
Placing the Patient on the Mattress
1. Perform one of the following:
• MA50 or MA51 - Press the Max Inflate button to turn on the control unit to
maximum flow.
• MA55 - Press the Mode button to select Max Inflate Mode.
NOTE: In this mode, the Max Inflate LED lights up.
2. After the mattress is fully inflated, place the patient on the mattress.
3. Ensure that the patient’s feet are towards the foot end of the mattress (the end with the
hose).
4. Center the patient on the bed from side-to-side and head-to-foot.
NOTE: Special positioning may be required with contracted patients to provide comfortable
positions.
5. After placing the patient, make certain no objects will fall under the patient, such as
feeding tubes, IV's etc.
6. Wait five minutes for the mattress pressure to stabilize.
7. Once the mattress inflates to its normal size, set the comfort pressure to the desired
comfort level.
8. Wait five minutes for the mattress pressure to stabilize.
MA50 Series
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SECTION 2—OPERATION
9. Verify that the patient has not bottomed out by performing the following steps:
A. Ensure that the patient is lying flat on his/her back in the middle of the mattress.
B. Place four fingers between the air cushions directly underneath the sacral region
of the patient’s body.
C. Ensure that there is 3 to 4-finger width clearance between the bottom of the patient
and the bed frame.
D. Adjust the comfort setting, if needed.
E. Wait five minutes for the mattress pressure to stabilize.
F. Repeat STEPS A-E until patient has not bottomed out and patient comfort is
achieved.
10. If the patient feels that the bed is too soft/hard, press the Soft or Firm button to adjust
the comfort settings.
11. Use a regular pillow to help support and stabilize the patient's head.
Transferring Patient From/To a Gurney
ꢀ WARNING
ALWAYS engage the wheel locks of the bed and the wheel locks of the gurney
before transferring the patient between the bed and the gurney.
1. Engage the wheel locks of the bed. Refer to the owner’s manual provided with the bed.
2. Engage the wheel locks of the gurney. Refer to the owner’s manual provided with the
gurney.
3. Press the Max Inflate or Mode button to achieve maximum mattress pressure.
4. Raise or lower the bed to match the gurney height. Refer to the owner’s manual
provided with the bed.
5. When the mattress has reached maximum firmness, perform one of the following:
• Bed to Gurney Transfer - Slide the patient onto the gurney.
• Gurney to Bed Transfer - Slide the patient onto the bed.
Part No 1148136
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MA50 Series
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SECTION 2—OPERATION
Transferring Patient From/To a Wheelchair
ꢀ WARNING
ALWAYS engage the wheel locks of the bed and the wheel locks of the wheelchair
before transferring the patient between the bed and the wheelchair.
1. Engage the wheel locks of the bed. Refer to the owner’s manual provided with the bed.
2. Engage the wheel locks of the wheelchair, if applicable. Refer to the owner’s manual
provided with the wheelchair.
3. Press the Max Inflate or Mode button to achieve maximum mattress pressure.
4. Raise or lower the bed to match the wheelchair height. Refer to the owner’s manual
provided with the bed.
5. When the mattress has reached maximum firmness, perform one of the following:
• Bed to Wheelchair Transfer - Slide the patient onto the wheelchair.
• Wheelchair to Bed Transfer - Slide the patient onto the bed.
Preparing for CPR Procedure
NOTE: For this procedure, refer to FIGURE 2.6.
1. Press and hold the tabs on hose connector while pulling the hose from the control unit.
2. Disconnect the RED CPR connector located on the side of the mattress.
Control Unit Connectors
Mattress
Tab
Hose
RED CPR
Connector
Connector
Hose
About Power Outage and Transportation
If the hoses remain connected to the control unit, the mattress retains air during a power
outage, during transportation, when the control unit is unplugged or when the control
unit is turned Off. If the hose becomes disconnected or damaged and the mattress
deflates, the mattress has a 2-inch foam pad to provide patient support .
MA50 Series
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Part No 1148136
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SECTION 3—MAINTENANCE AND TROUBLESHOOTING
SECTION 3—MAINTENANCE AND
TROUBLESHOOTING
Cleaning the System
ꢀ WARNING
Before cleaning or disassembling the MA50 series, check the underside of the
mattress folds for sharp objects such as scissors, needles, etc. These objects should
be removed and discarded before proceeding with further cleaning or disassembly;
otherwise injury or damage to the product may occur.
Because of potential risk of infectious exposure, cleaning with the patient on the bed
is not recommended.
All equipment should be inspected. Any item that is visibly soiled with the patient's
blood or other body fluids should be properly cleaned or removed.
Laundry workers should treat all soiled bedding as if it were contaminated with
pathogenic microorganisms.
1. Remove the bedding.
2. If necessary, inflate the mattress.
3. Ensure that the control unit is off.
4. Unplug the power cord from the wall outlet.
5. Ensure that the underside of the mattress is clear of all sharp objects.
6. Examine the surface of the control unit and mattress assembly components for visible
blood or body fluids.
7. Perform one of the following:
• If blood is present, decontaminate the product.
i. Remove all visible soil with disposable paper towels.
ii. Scrub the area with freshly prepared effective phenolic detergent disinfectant
solution.
• If blood is not present, remove any soil from the cover with paper towels.
NOTE: If soiled, the cover should be removed, cleaned and decontaminated.
8. Perform the following steps to clean the mattress cover:
A. Using a clean sponge or paper towel, wipe down the cover surface with a dilute
detergent solution of quaternary cleaner disinfectant or other germicidal detergent
solution.
B. Remove the cover and launder it using the following method:
21
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SECTION 3—MAINTENANCE AND TROUBLESHOOTING
CAUTION
Laundry workers should always wash their hands before working with clean
bedding.
DO NOT overload the machine.
DO NOT use chlorine bleach because it may damage the fabric coating.
High air temperatures will damage the fabrics and void the Invacare warranty.
i. Place the cover in a washing machine.
ii. Wash with warm water (below 120°F).
iii. Add detergent and disinfectant according to the manufacturer’s instructions.
iv. Remove excess water.
v. Set the dryer to the lowest setting (below 120°F).
vi. Dry the cover until it is completely dry.
9. Perform the following steps to clean the control unit and hose fittings:
A. Wipe all controls, chassis and hose fittings with a quaternary disinfectant solution.
B. Using a nylon brush, gently clean all crevices as they can harbor microorganisms.
C. Air dry all treated surfaces.
10. Perform the following steps to clean the mattress components (air cushions, mattress
base, etc.):
A. Using a clean sponge or paper towel, wipe down the mattress components with a
dilute detergent solution of quaternary cleaner disinfectant or other germicidal
detergent solution.
B. Wipe the mattress components with a clean dry cloth.
Storing the System
1. Ensure that the control unit is off and disconnect the power cord from the wall outlet.
3. Disconnect the air hose connector(s) from the control unit and allow air to vent from
the mattress.
4. Gently roll up the mattress with minimal handling and agitation.
5. Ensure the cover surface is inside the roll.
6. Store the unit, keeping the mattress with the control unit.
22
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SECTION 3—MAINTENANCE AND TROUBLESHOOTING
Troubleshooting
PROBLEM
CAUSE
SOLUTION
Mattress not inflating
Not alternating properly
Mattress hose disconnected
Connect hose connectors and lock
them in place
Air hose kinked or split
Unkink hose or replace split hose
Major leak in the air cushions or overlay pad Replace leaking air cushions or
overlay pad
Kinked or split manifold
Unkink manifold or replace split
manifold
Has power and fuse is good, control unit
does not come on
Send control unit back to factory for
repair
Not alternating, solenoid malfunction
Send control unit back to factory for
repair
No air, pump malfunction
Control unit off
Send unit for repair
No power
Check power source and turn on unit
Power cord disconnected
Connect power cord to the power
source
No power in the power source
Check power source has power and
turn it On
Power outage
Blown fuse
Wait till the power source has power
Replace blown fuse with an equivalent
fuse
Part No 1148136
23
MA50 Series
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LIMITED WARRANTY
PLEASE NOTE: THE WARRANTY BELOW HAS BEEN DRAFTED TO COMPLY WITH FEDERAL LAW
APPLICABLE TO PRODUCTS MANUFACTURED AFTER JULY 4, 1975.
This warranty is extended only to the original purchaser who purchases this product when new and unused
from Invacare or a dealer. This warranty is not extended to any other person or entity and is not transferable
or assignable to any subsequent purchaser or owner. Coverage under this warranty will end upon any such
subsequent sale or other transfer of title to any other person.
This warranty gives you specific legal rights and you may also have other legal rights which vary from state to
state.
Invacare warrants the mattress, mattress overlay and cover when purchased new and unused to be free from
defects in materials and workmanship for a period of one year from the date of purchase from Invacare or a
dealer, with a copy of the seller’s invoice required for coverage under this warranty. Invacare warrants
thecontrol unit when purchased new and unused to be free from defects in materials and workmanship for a
period of two years from the date of purchase from Invacare or a dealer, with a copy of the seller’s invoice
required for coverage under this warranty.If within such warranty period any such product shall be proven to
be defective, such product shall be repaired or replaced, at Invacare's option. This warranty does not include
any labor or shipping charges incurred in replacement part installation or repair of any such product. Invacare's
sole obligation and your exclusive remedy under this warranty shall be limited to such repair and/or
replacement.
For warranty service, please contact the dealer from whom you purchased your Invacare product. In the event
you do not receive satisfactory warranty service, please write directly to Invacare at the address on the back
cover. Provide dealer's name, address, model number, and the date of purchase, indicate nature of the defect
and, if the product is serialized, indicate the serial number.
Invacare Corporation will issue a return authorization. The defective unit or parts must be returned for
warranty inspection using the serial number, when applicable, as identification within thirty days of return
authorization date. DO NOT return products to our factory without our prior consent. C.O.D. shipments will
be refused; please prepay shipping charges.
LIMITATIONS AND EXCLUSIONS: THE WARRANTY SHALL NOT APPLY TO PROBLEMS ARISING
FROM NORMAL WEAR OR FAILURE TO ADHERE TO THE ENCLOSED INSTRUCTIONS. IN ADDITION,
THE FOREGOING WARRANTY SHALL NOT APPLY TO SERIAL NUMBERED PRODUCTS IF THE
SERIAL NUMBER HAS BEEN REMOVED OR DEFACED; PRODUCTS SUBJECTED TO NEGLIGENCE,
ACCIDENT, IMPROPER OPERATION, MAINTENANCE OR STORAGE; OR PRODUCTS MODIFIED
WITHOUT INVACARE'S EXPRESS WRITTEN CONSENT INCLUDING, BUT NOT LIMITED TO:
MODIFICATION THROUGH THE USE OF UNAUTHORIZED PARTS OR ATTACHMENTS: PRODUCTS
DAMAGED BY REASON OF REPAIRS MADE TO ANY COMPONENT WITHOUT THE SPECIFIC
CONSENT OF INVACARE; PRODUCTS DAMAGED BY CIRCUMSTANCES BEYOND INVACARE'S
CONTROL; PRODUCTS REPAIRED BY ANYONE OTHER THAN AN INVACARE DEALER, SUCH
EVALUATION SHALL BE SOLELY DETERMINED BY INVACARE.
THE FOREGOING EXPRESS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS
WARRANTIES WHATSOEVER, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND THE SOLE
REMEDY FOR VIOLATIONS OF ANY WARRANTY WHATSOEVER, SHALL BE LIMITED TO REPAIR OR
REPLACEMENT OF THE DEFECTIVE PRODUCT PURSUANT TO THE TERMS CONTAINED HEREIN.
THE APPLICATION OF ANY IMPLIED WARRANTY WHATSOEVER SHALL NOT EXTEND BEYOND
THE DURATION OF THE EXPRESS WARRANTY PROVIDED HEREIN. INVACARE SHALL NOT BE
LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES WHATSOEVER.
THIS WARRANTY SHALL BE EXTENDED TO COMPLY WITH STATE/PROVINCIAL LAWS AND
REQUIREMENTS.
Invacare Corporation
USA
Canada
570 Matheson Blvd E All rights reserved. Trademarks are identified by
Unit 8 the symbols ™ and ®. All trademarks are owned
Mississauga Ontario by or licensed to Invacare Corporation unless
One Invacare Way
Elyria, Ohio USA
44036-2125
800-333-6900
L4Z 4G4 Canada
800-668-5324
otherwise noted.
© 2008 Invacare Corporation
Part No 1148136
Rev B - 02/08
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