Invacare 1125078 User Manual

Service Manual

At’m and At’m QT

DEALER: Keep this manual. The procedures in this manual MUST be performed by a qualified technician.

For more information regarding

Invacare products, parts, and services,

please visit www.invacare.com

REFERENCE DOCUMENTS

 WARNING

A QUALIFIED TECHNICIAN MUST PERFORM THE INITIAL SET UP OF THIS WHEELCHAIR. ALSO, A QUALIFIED TECHNICIAN MUST PERFORM ALL PROCEDURES IN THE SERVICE MANUAL.

DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING (1) THE OWNER’S OPERATOR AND MAINTENANCE MANUAL, (2) THE SERVICE MANUAL (IF APPLICABLE) AND (3) THE SEATING SYSTEM’S MANUAL (IF APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO SERVICE OR OPERATE THIS EQUIPMENT - OTHERWISE, INJURY OR DAMAGE MAY RESULT.

REFERENCE DOCUMENTS

Refer to the table below for part numbers of additional documents which are referenced in this manual.

WHEELCHAIR TYPE OWNER’S MANUAL ELECTRONICS MANUAL

At’m and At’m QT 1125035 1110532

NOTE: Updated versions of this manual are available on www.invacare.com

At’m and At’m QT 2 Part No. 1125078

TABLE OF CONTENTS

REFERENCE DOCUMENTS ................................................................. 2

SPECIAL NOTES ................................................................................ 6

LABEL LOCATION ............................................................................ 7

At’m ...............................................................................................................................................................7

At’m QT .......................................................................................................................................................8

TYPICAL PRODUCT PARAMETERS .................................................... 9

SECTION 1—GENERAL GUIDELINES ................................................. 10

Repair or Service Information ...............................................................................................................10

Tire Pressure .............................................................................................................................................10

Operation Information............................................................................................................................11

Oxygen........................................................................................................................................................11

Batteries......................................................................................................................................................11

Grounding Instructions ...........................................................................................................................13

Rain Test.....................................................................................................................................................13

Weight Training ........................................................................................................................................13

Weight Limitation.....................................................................................................................................13

SECTION 2—EMI INFORMATION ..................................................... 14

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING .................... 16

Checklist .....................................................................................................................................................16

Troubleshooting........................................................................................................................................17

Checking Battery Charge Level.............................................................................................................27

Field Load Test..........................................................................................................................................27

Electro-Mechanical Parking Brake Test ...............................................................................................29

SECTION 4—FOOTBOARD ASSEMBLY .............................................. 30

Removing/Installing the Footboard Assembly....................................................................................30

Adjusting Footboard Assembly Height................................................................................................30

SECTION 5—SEAT ........................................................................... 31

Removing/Installing the Seat...................................................................................................................31

Replacing Seat Positioning Strap ...........................................................................................................33

Removing/Installing Under-Seat Basket ...............................................................................................34

Removing/Installing Seat Upholstery....................................................................................................34

Replacing the Seat Latches .....................................................................................................................36

Part No. 1125078 3 At’m and At’m QT

TABLE OF CONTENTS

SECTION 6—ARMS ......................................................................... 37

Removing/Installing Arm Pads................................................................................................................37

Replacing Clothing Guard.......................................................................................................................38

Removing/Installing Arm Tube ..............................................................................................................39

SECTION 7—JOYSTICK .................................................................... 40

Disconnecting/Connecting the Joystick...............................................................................................40

Removing/Installing the Joystick ............................................................................................................41

Repositioning the Joystick to Opposite Arm .....................................................................................43

SECTION 8—BATTERIES .................................................................. 44

Warnings For Handling and Replacing Batteries...............................................................................44

Recommended Battery Type .................................................................................................................44

Removing/Installing the Battery Pack on the At’m ...........................................................................45

Removing/Installing the Battery Box on the At’m QT.....................................................................46

Removing/Installing the Batteries From/Into the At’m Battery Pack............................................47

Removing/Installing the Batteries From/Into the At’m QT Battery Box.....................................49

Removing/Installing the At’tm QT Battery Box Assembly..............................................................50

Charging Batteries ....................................................................................................................................52

Resetting the Circuit Breaker................................................................................................................54

SECTION 9—MOTORS ..................................................................... 56

Engaging/Disengaging the Motors .........................................................................................................56

Removing/Installing Motor Shroud .......................................................................................................57

Removing/Installing the Base Plate........................................................................................................58

Removing/Installing MK5 Controller....................................................................................................59

Removing/Installing the Motors.............................................................................................................60

Replacing the Knurled Cylinder ............................................................................................................61

SECTION 10—FRONT RIGGINGS ...................................................... 64

Installing/Removing the Front Rigging Support Brackets.................................................................64

Installing/Removing the Front Rigging Assembly ...............................................................................65

Adjusting Footrest Height ......................................................................................................................66

SECTION 11—WHEELS AND CASTERS .............................................. 67

Replacing Front Casters..........................................................................................................................67

Replacing Forks .........................................................................................................................................68

Adjusting Forks .........................................................................................................................................68

Removing/Installing the Drive Wheels ................................................................................................69

Replacing Drive Wheels on the Drive Axle.......................................................................................70

At’m and At’m QT 4 Part No. 1125078

TABLE OF CONTENTS

SECTION 12—ANTI-TIPPERS ........................................................... 71

Removing/Installing the Anti-Tippers...................................................................................................71

SECTION 13—TRANSPORTING THE WHEELCHAIR ........................... 74

LIMITED WARRANTY ..................................................................... 76

Part No. 1125078 5 At’m and At’m QT

SPECIAL NOTES

Signal words are used in this manual and apply to hazards or unsafe practices which could result in personal injury or property damage. Refer to the table below for definitions of the signal words.

SIGNAL WORD MEANING

DANGER

WARNING

CAUTION

Danger indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Warning indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Caution indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE

THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.

WHEELCHAIR USER

As a manufacturer of wheelchairs, Invacare endeavors to supply a wide variety of wheelchairs to meet many needs of the end user. However, final selection of the type of wheelchair to be used by an individual rests solely with the user and his/her healthcare professional capable of making such a selection.

WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS

Wheelchair users should not be transported in vehicles of any kind while in wheelchairs. As of this date, the Department of Transportation has not approved any tie-down systems for transportation of a user while in a wheelchair, in a moving vehicle of any type.

It is Invacare’s position that users of wheelchairs should be transferred into appropriate seating in vehicles for transportation and use be made of the restraints made available by the auto industry. Invacare cannot and does not recommend any wheelchair transportation systems.

 WARNINGS

Wheelchairs should be examined during maintenance for signs of corrosion (water exposure, incontinence, etc). Electrical components damaged by corrosion should be replaced IMMEDIATELY.

Wheelchairs that are used by incontinent users and/or are frequently exposed to water may require replacement of electrical components more frequently.

Invacare products are specifically designed and manufactured for use in conjunction with Invacare accessories. Accessories designed by other manufacturers have not been tested by Invacare and are not recommended for use with Invacare products.

The seat positioning strap is a positioning belt only. It is not designed for use as a safety device withstanding high stress loads such as auto or aircraft safety belts. If signs of wear appear, belt MUST be replaced IMMEDIATELY.

At’m and At’m QT 6 Part No. 1125078

At’m

LABEL LOCATION

Serial Number Label is

located on inside of

the base frame tube.

NOTE: Warning label 1125069 is also located on the opposite side.

NOTE: Warning label 1125068 is also located on the opposite side.

Part No. 1125078 7 At’m and At’m QT

LABEL LOCATION

At’m QT

NOTE: Warning label 1125069 is also located on the opposite side.

Serial Number Label is

located on inside of the

base frame tube.

NOTE: Warning label 1125068 is also located on the opposite side.

At’m and At’m QT 8 Part No. 1125078

TYPICAL PRODUCT PARAMETERS

PARAMETERS At’m At’m QT

SEAT WIDTH: 16, 18 inches 18 inches

SEAT DEPTH: 14, 16 inches 16 inches

BACK HEIGHT: 18, 21 inches 21 inches

SEAT-TO-FLOOR: 20 inches

OVERALL WIDTH (EXCLUDING JOYSTICK): 25.5 inches

OVERALL HEIGHT

FOR 16 INCHES WIDE: FOR 18 INCHES WIDE:

OVERALL LENGTH (INCLUDING ANTI-TIPPERS): 35.5 inches

WEIGHT

BASE WITHOUT BATTERY PACK/BOX: SEAT: BATTERY PACK/BOX:

SHIPPING: 90 lbs

38 inches 41 inches

34 lbs 14 lbs 26 lbs

N/A

41 inches

38 lbs 14 lbs 21 lbs

DRIVE WHEELS/TIRES: 12½ x 2¼ inches

CASTER WITH PRECISION SEALED BEARINGS: 6-inch solid

UPHOLSTERY: Black Nylon

BATTERY SIZE (TWO REQUIRED): M17 - 12 SLSM gel cell PE 12V 12SLA

PERFORMANCE

SPEED (M.P.H.): MAXIMUM RAMP/SLOPE CAPABILITY: *RANGE (VARIABLE): WEIGHT LIMITATION:

3¾

6°

Up to 12 miles

250 lbs

3¾

6°

Up to 6 miles

250 lbs

*NOTE: Values for range are calculated for maximum chair weight rating using largest batteries applicable (M17 - 12 SLSM gel cell/PE 12V 12SLA), per test procedures described in ANSI/RESNA WC/VOL2-1998 Section 4 and meet federal reimbursement requirements for this product. While considered typical, they are derived based on certain ideal conditions. Variances in battery condition, user weight, usage pattern or overall terrain conditions will result in actual values for range that differ from these stated values. Users should become accustomed to how their unique conditions impact their individual results. Users should become familiar with the battery discharge indicator on the joystick to determine the range of their wheelchair. Refer to Charging Batteries on page 52 for more information about the battery discharge indicator.

Part No. 1125078 9 At’m and At’m QT

SECTION 1—GENERAL GUIDELINES

 WARNING

SECTION 1 - GENERAL GUIDELINES contains important information for the safe operation and use of this product. DO NOT use this product or any available optional equipment without first completely reading and understanding these instructions and any additional instructional material such as Owner’s Manuals, Service Manuals or Instruction Sheets supplied with this product or optional equipment. If you are unable to understand the Warnings, Cautions or Instructions, contact a healthcare professional, dealer or technical personnel before attempting to use this equipment - otherwise, injury or damage may occur.

Repair or Service Information

Set-up of the Electronics Control Unit is to be performed only by a qualified technician. The final adjustments of the controller may affect other activities of the wheelchair. Damage to the equipment could occur if improperly set-up or adjusted.

After any adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely - otherwise injury or damage may result.

Before performing any maintenance, adjustment or service verify that the On/Off switch on the joystick is in the Off position.

Wheelchairs should be examined during maintenance for signs of corrosion (water exposure, incontinence, etc). Electrical components damaged by corrosion should be replaced IMMEDIATELY.

Wheelchairs that are used by incontinent users and/or are frequently exposed to water may require replacement of electrical components more frequently.

Tire Pressure

DO NOT USE YOUR WHEELCHAIR UNLESS IT HAS THE PROPER TIRE PRESSURE (P.S.I.) - OTHERWISE THE WHEELCHAIR MAY NOT DRIVE CORRECTLY, STOP CORRECTLY OR MAY EXPERIENCE ERRATIC PERFORMANCE.

Maintain tire pressure at 30 p.s.i. Otherwise, the wheelchair may not drive correctly, stop correctly or may experience erratic performance.

DO NOT overinflate the tires. Failure to follow these suggestions may cause the tire to explode and cause bodily harm. The recommended tire pressure is listed on the side wall of the tire.

At’m and At’m QT 10 Part No. 1125078

SECTION 1—GENERAL GUIDELINES

Operation Information

Performance adjustments should only be made by professionals of the healthcare field or persons fully conversant with this process and the driver's capabilities. Incorrect settings could cause injury to the driver, bystanders, damage to the chair and to surrounding property.

After the wheelchair has been set-up, check to make sure that the wheelchair performs to the specifications entered during the set-up procedure. If the wheelchair does not perform to specifications, turn the wheelchair off IMMEDIATELY and reenter set-up specifications. Repeat this procedure until the wheelchair performs to specifications.

The basket under the seat is designed for light items such as jackets and umbrellas. DO NOT overload the basket.

Ensure that the items stored in the basket are fully contained within the basket - otherwise they could become entangled with the friction drive and may cause injury to the user or damage the wheelchair.

Before performing any maintenance, adjustment or service verify that on/off switch on the joystick is in the Off position.

Avoid storing or using the wheelchair near open flame or combustible products. Serious injury or damage to property may result.

For use on substantially flat surfaces.

Use EXTREME CAUTION on wet surfaces.

Oxygen

Extreme care should be exercised when using oxygen in close proximity to electric circuits and other combustible materials. Contact your oxygen supplier for instruction in the use of oxygen.

Batteries

The warranty and performance specifications contained in this manual are based on the use of deep cycle gel cell batteries. Invacare strongly recommends their use as the power source for this unit.

Carefully read battery/battery charger information prior to installing, servicing or operating your wheelchair.

ALWAYS transport the battery pack/box in an upright and secure manner. To prevent damage, DO NOT transport the battery pack/box with other objects that could suddenly shift during transportation, unless they are secured or in a different vehicle area. DO NOT transport battery pack/box with gas cans or similar containers in the same vehicle area.

Part No. 1125078 11 At’m and At’m QT

SECTION 1—GENERAL GUIDELINES

The use of rubber gloves is recommended when working with batteries.

Some battery manufacturers mold a carrying strap and/or hold down flanges directly into the battery case. Batteries that interfere with the battery box cannot be used for these applications. Attempting to “wedge” a battery into a battery box may damage the box, the battery and/or be a fire hazard, resulting in serious injury or further damage to property.

Charging Batteries

 DANGER

When using an extension cord, use only a three wire extension cord having at least 16 AWG (American Wire Gauge) wire and the same or higher electrical rating as the device being connected. Use of improper extension cord could result in a risk of fire and electric shock.

Three prong to two prong adapters should not be used. Use of three prong adapters can result in improper grounding and present a shock hazard to the user.

NEVER attempt to recharge the batteries by attaching cables directly to the battery terminals.

DO NOT attempt to recharge the batteries and operate the wheelchair at the same time.

DO NOT operate wheelchair with extension cord attached to the AC cable.

DO NOT attempt to recharge the batteries when the wheelchair has been exposed to any type of moisture.

DO NOT attempt to recharge the batteries when the wheelchair is outside.

DO NOT sit in the wheelchair while charging the batteries.

Read and carefully follow the manufacturer’s instructions for each charger (supplied or purchased). If charging instructions are not supplied, consult a qualified technician for proper procedures.

Ensure the pins of the extension cord plug are the same number, size, and shape as those on the charger.

DO NOT under any circumstances cut or remove the round grounding plug from the charger AC cable plug or the extension cord plug.

At’m and At’m QT 12 Part No. 1125078

SECTION 1—GENERAL GUIDELINES

Grounding Instructions

DO NOT, under any circumstances, cut or remove the round grounding prong from any plug used with or for Invacare products. Some devices are equipped with three-prong (grounding) plugs for protection against possible shock hazards and fire. Where a two-prong wall receptacle is encountered, it is the personal responsibility and obligation of the customer to contact a qualified electrician and have the two-prong receptacle replaced with a properly grounded three-prong wall receptacle in accordance with the National Electrical Code. If you must use an extension cord, use only a three-wire extension cord having the same or higher electrical rating as the device being connected. In addition, Invacare has placed RED/ORANGE warning tags on some equipment. DO NOT remove these tags.

Rain Test

Invacare has tested its power wheelchairs in accordance with ISO 7176 “Rain Test.” This provides the end user or his/her assistant sufficient time to remove his/her power wheelchair from a rain storm and retain wheelchair operation.

DO NOT leave power wheelchair in a rain storm of any kind.

DO NOT store power wheelchair in a damp area for an extended period of time.

Direct exposure to excessive rain or dampness may cause the chair to malfunction electrically and mechanically, may cause the chair to prematurely rust or may damage the upholstery.

Check to ensure that the battery pack/box is securely fastened, that all electrical connections are secure at all times and joystick boot is not torn or cracked where water can enter.

If the joystick boot becomes torn or cracked, replace IMMEDIATELY.

Weight Training

Invacare does not recommend the use of its wheelchairs as a weight training apparatus. Invacare wheelchairs have not been designed or tested as a seat for any kind of weight training. If occupant uses said wheelchair as a weight training apparatus, Invacare shall not be liable for bodily injury and the warranty is void.

Weight Limitation

The At’m wheelchairs have a weight limitation of 250 lbs.

Part No. 1125078 13 At’m and At’m QT

SECTION 2—EMI INFORMATION

 WARNING

CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC INTERFERENCE ON YOUR POWERED WHEELCHAIR.

Electromagnetic Interference (EMI) From Radio Wave Sources

Powered wheelchairs and motorized scooters (in this text, both will be referred to as powered wheelchairs) may be susceptible to electromagnetic interference (EMI), which is interfering electromagnetic energy (EM) emitted from sources such as radio stations, TV stations, amateur radio (HAM) transmitters, two way radios, and cellular phones. The interference (from radio wave sources) can cause the powered wheelchair to release its brakes, move by itself, or move in unintended directions. It can also permanently damage the powered wheelchair's control system. The intensity of the interfering EM energy can be measured in volts per meter (V/m). Each powered wheelchair can resist EMI up to a certain intensity. This is called its "immunity level." The higher the immunity level, the greater the protection. At this time, current technology is capable of achieving at least a 20 V/m immunity level, which would provide useful protection from the more common sources of radiated EMI.

There are a number of sources of relatively intense electromagnetic fields in the everyday environment. Some of these sources are obvious and easy to avoid. Others are not apparent and exposure is unavoidable. However, we believe that by following the warnings listed below, your risk to EMI will be minimized.

The sources of radiated EMI can be broadly classified into three types:

1) Hand-held Portable transceivers (transmitters-receivers with the antenna mounted directly on the transmitting unit. Examples include: citizens band (CB) radios, "walkie talkie", security, fire and police transceivers, cellular telephones, and other personal communication devices).

NOTE: Some cellular telephones and similar devices transmit signals while they are ON, even when not being used.

2) Medium-range mobile transceivers, such as those used in police cars, fire trucks, ambulances and taxis. These usually have the antenna mounted on the outside of the vehicle; and

3) Long-range transmitters and transceivers, such as commercial broadcast transmitters (radio and TV broadcast antenna towers) and amateur (HAM) radios.

NOTE: Other types of hand-held devices, such as cordless phones, laptop computers, AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to your powered wheelchair.

At’m and At’m QT 14 Part No. 1125078

SECTION 2—EMI INFORMATION

 WARNING

Powered Wheelchair Electromagnetic Interference (EMI)

Because EM energy rapidly becomes more intense as one moves closer to the transmitting antenna (source), the EM fields from hand-held radio wave sources (transceivers) are of special concern. It is possible to unintentionally bring high levels of EM energy very close to the powered wheelchair's control system while using these devices. This can affect powered wheelchair movement and braking. Therefore, the warnings listed below are recommended to prevent possible interference with the control system of the powered wheelchair.

Electromagnetic interference (EMI) from sources such as radio and TV stations, amateur radio (HAM) transmitters, two-way radios, and cellular phones can affect powered wheelchairs and motorized scooters.

FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.

1) DO NOT operate hand-held transceivers (transmitters receivers), such as citizens band (CB) radios, or turn ON personal communication devices, such as cellular phones, while the powered wheelchair is turned ON;

2) Be aware of nearby transmitters, such as radio or TV stations, and try to avoid coming close to them;

3) If unintended movement or brake release occurs, turn the powered wheelchair Off as soon as it is safe;

4) Be aware that adding accessories or components, or modifying the powered wheelchair, may make it more susceptible to EMI (NOTE: There is no easy way to evaluate their effect on the overall immunity of the powered wheelchair); and

5) Report all incidents of unintended movement or brake release to the powered wheelchair manufacturer, and note whether there is a source of EMI nearby.

Important Information

1) 20 volts per meter (V/m) is a generally achievable and useful immunity level against EMI (as of May 1994) (the higher the level, the greater the protection);

2) This device has been tested to a radiated immunity level of 20 volts per meter.

3) The immunity level of the product is unknown.

Modification of any kind to the electronics of this wheelchair as manufactured by Invacare may adversely affect the EMI immunity levels.

Part No. 1125078 15 At’m and At’m QT

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

Checklist

These adjustments should be made whenever you service this product, especially as a part of the initial set up. Follow these maintenance procedures:

 WARNING

Before performing any maintenance, adjustment or service, turn power off.

CAUTION

As with any vehicle, the wheels and tires should be checked periodically for cracks and wear, and should be replaced.

❑ Check pneumatic tires for proper inflation. ❑ Ensure that the wheelchair rolls straight (no excessive drag or pull to one side). ❑ Ensure all clothing guard fasteners are secure. ❑ Clean seat upholstery and armrests. ❑ Ensure armrest pads sit flush against arm tubes. ❑ Ensure seat is secured to wheelchair frame. ❑ Ensure seat release latches are functional. Replace if necessary. ❑ Inspect seat upholstery for rips or sagging. ❑ Ensure no excessive side movement or binding occurs when drive wheels are lifted

and spun when disengaged (freewheeling).

❑ Ensure caster assembly has proper tension when caster is spun. Caster should come

to a gradual stop.

❑ Loosen/tighten caster locknut if wheel wobbles noticeably or binds to a stop. ❑ Ensure all caster/wheel/fork/headtube fasteners are secure. ❑ Ensure that casters are free of debris. ❑ Inspect tires for flat spots and wear. ❑ Inspect for any loose hardware on the wheelchair. ❑ Inspect the seat positioning strap for signs of wear. Ensure buckle latches. Verify

hardware that attaches strap to frame is secure and undamaged. Replace if necessary.

❑ Inspect charger AC power cord for damage. Replace if necessary. ❑ Check that all labels are present and legible. Replace if necessary. ❑ Inspect electrical components for signs of corrosion. Replace if corroded or damaged.

At’m and At’m QT 16 Part No. 1125078

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

Troubleshooting

NOTE: For additional troubleshooting information and explanation of error codes, refer to the individual electronics manual supplied with each wheelchair.

Wheels

SOLUTIONS

FLUTTER

LEFT/RIGHT

WHEELCHAIR VEERS

X X X X X If pneumatic, check tires for correct and equal pressure.

X X X X Check for loose stem nuts/bolts.

X X Check that casters contact ground at the same time.

SLUGGISH TURN/

CASTERS

PERFORMANCE

RATTLES

SQUEAKS AND

LOOSENESS

IN WHEELCHAIR

WHEELS

WHEELCHAIR 3

Information Gauge and Diagnostics Codes

The joystick information gauge and the Remote Programmer give indications of the type of fault or error detected by the control module. When a fault is detected, the wheelchair will stop and not drive. All of the lights on the information gauge will begin to flash. The number of flashes indicates the nature of an abnormal condition. An error code and a quick description of the fault will begin to scroll across the Remote Programmer display. If multiple faults are found, only the first fault encountered by the control module program will be displayed. A table of the diagnostics codes and their causes follows.

*NOTE: The fault log displays a four digit number. The first two digits are the diagnostic code and the remaining two digits are the sub code.

Part No. 1125078 17 At’m and At’m QT

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

Information Gauge

DISPLAY DESCRIPTION DEFINITION COMMENTS

All LEDs are off. Power is Off.

All LEDs are on. Power is On. Fewer than three LEDs on

Left RED LED is flashing. Battery charge is low. The batteries should be

implies reduced battery charge.

charged as soon as possible.

Left to Right “chase” alternating with steady display.

Right GREEN LED is flashing.

All LEDs are flashing slowly. Joystick has detected

All LEDs are flashing quickly.

Joystick is in programming, inhibit and/or charging mode.

Joystick is in Speed Limit mode.

Out-of-Neutral-at-Power-Up mode.

Joystick has detected a fault.

The steady LEDs indicate the current state of the battery charge.

The current state of battery charge will be displayed at the same time.

Release the joystick back to Neutral.

Joystick uses Flash codes to indicate faults. Refer to the electronics manual (Part Number 1110532).

At’m and At’m QT 18 Part No. 1125078

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

Diagnostic Codes

POSSIBLE

ERROR CODE

DESCRIPTION

DIAGNOSTICS CODE

NUMBER OF FLASHES

1 E 01 User Fault 00 Stall Timeout or user error. Release joystick to neutral and try again.

2 E02 Battery Fault 00 Recharge batteries or replace. Check the batteries and cable. Try charg-

3 E03 Left Motor Fault 00 Left Motor Short Circuit Check the left motor, connections and

SUB CODE*

01 Left Motor Open Circuit

02 Left Motor Connection Fault

03 Motor Terminal Connected

04 Left Motor Voltage Fault

DETAILS OF

B-

to B+

ERROR CODE

ing the batteries. Batteries may require

motor cable.

SOLUTION

replacing.

05 Left Motor Bridge Fault

06 Too Many Hardware Current

Limit Events

07 Current Offset Out of Range

08 Hardware Current Limit Fault

4 E04 Right Motor Fault 00 Right Motor Short Circuit Check the right motor, connections and

01 Right Motor Open Circuit

02 Right Motor Connection Fault

B-

03 Motor Terminal Connected

to B+

04 Right Motor Voltage Fault

05 Right Motor Bridge Fault

06 Too Many Hardware Cur-

rent Limit Events

07 Current Offset Out of Range

08 Hardware Current Limit Fault

motor cable.

Part No. 1125078 19 At’m and At’m QT

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

ERROR CODE

DESCRIPTION

DIAGNOSTICS CODE

NUMBER OF FLASHES

5 E05 Left Park Brake

Fault

6 E06 Right Park Brake

Fault

SUB CODE*

00 Left Park Brake Drive-Time

01 Left Park Brake Output

Enabled When Wheelchair

02 Left Park Brake Output Did

not Enable When Entering

03 Left Park Brake fault during

power-up testing

04 Left park brake feedback low

during drive (park brake

00 Right Park Brake Drive-Time

DETAILS OF

ERROR CODE

Test Failed

Idle

Drive Mode

short)

Test Failed

POSSIBLE

SOLUTION

Check the left park brake connections and

cable.

Check the right park brake connections

and cable.

01 Right Park Brake Output

Enabled When Wheelchair

Idle

02 Right Park Brake Output Did

not Enable When Entering

Drive Mode

03 Right Park Brake fault during

power-up testing

04 Right park brake feedback

low during drive (park brake

short)

7 E07 Remote Fault 00 Local SR Fault (CPU,

EEPROM, etc.)

01 Joystick fault at the remote

02 Speed pot fault at the remote

Check the communications bus, connec-

tions and wiring. Replace the remote.

At’m and At’m QT 20 Part No. 1125078

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

POSSIBLE

ERROR CODE

DESCRIPTION

DIAGNOSTICS CODE

NUMBER OF FLASHES

8 E08 Controller Fault 00 Controller fault Check connections and wiring. Replace

SUB CODE*

01 RAM fault

02 ROM fault

03 CPU fault

04 EEPROM fault

05 Watchdog fault

06 Stack fault

07 Software fault

08 Power-up testing fault

DETAILS OF

ERROR CODE

power module.

SOLUTION

09 Relay fault or precharge fault

10 Bridge fault or disable all fault

11 Electronics fault: Thermistor

12 Calibration setting fault

9 E09 Communications

Fault

10 E10 General Fault 00 General fault Check all connections and wiring. Contact

11 E11 Incompati-

ble/incorrect

Remote

00 Remote connection lost Check connections and wiring. Replace

01 Low communication mode

00 Incompatible/incorrect

Remote

Invacare Technical Service.

Wrong type of remote connected. Ensure

the branding of the joystick matches that

Bus cable.

of controller unit.

Part No. 1125078 21 At’m and At’m QT

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

Motor/Gearbox/Brake

SYMPTOM PROBABLE CAUSE SOLUTIONS

Erratic performance of wheelchair (driving uphill, increase in braking distance).

Wheelchair will not drive.

Motors stall and start up again.

Motor “chatters” or runs irregularly.

Low tire pressure. Inflate tires to the proper tire pressure.

Low tire pressure.

Motor engagement handles are disengaged.

Batteries require charging.

Charger plugged in.

Circuit breaker tripped.

Current rollback. Stop driving and let electronics cool.

Electrical malfunction. Contact Invacare.

Inflate tires to the proper tire pressure.

Engage motor engagement handles.

Charge batteries. Make sure the setting on the charger is correct.

Unplug charger from wall outlet before operating the wheelchair.

Press the reset button. Refer to Resetting the Circuit Breaker on page 54.

Only one drive wheel turns.

Joystick erratic or does not respond as desired.

Wheelchair does not respond to commands.

Power indicator off

- even after recharging.

Electrical malfunction.

One motor is disengaged.

Electrical malfunction.

Controller programmed improperly.

Poor battery terminal connection. Have terminals cleaned.

Electrical malfunction. Contact Invacare for service.

Contact Invacare for service.

Engage motor engagement handle.

Contact Invacare for service.

Reprogram controller (Refer to electronics manual supplied with wheelchair).

At’m and At’m QT 22 Part No. 1125078

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

SYMPTOM PROBABLE CAUSE SOLUTIONS

Wheelchair will not drive.

Motor chatters or runs erratically, or only one motor turns.

Wheelchair veers to the left or right when driving on level surface.

Low tire pressure.

Motor engagement handles are disengaged.

Batteries require charging.

Charger plugged in.

Circuit breaker tripped.

Damaged connector or worn brushes. Bad motor.

Controller malfunction. Check for error codes with programmer. Refer to

Uneven tire pressure.

Motors out of balance.

Inflate tires to the proper tire pressure (30 psi).

Engage motor engagement handles.

Charge batteries. Make sure the setting on the charger is correct.

Unplug charger from wall outlet before operating the wheelchair.

Press the reset button. Refer to Resetting the Circuit Breaker on page 54.

Ohm out motors. Replace motor if high reading is present. Normal reading is 0-5 Ohms.Refer to Electro-Mechanical Parking Brake Test page 29.

electronics manual provided.

Inflate tires. Replace tires if worn.

Use programmer to balance motors.

E09/E10 error code will not go away.

Excessive clicking coming from motor.

Motor stutters.

Motor fails to start after initial installation.

Only one drive wheel turns.

Joystick erratic or does not respond as desired.

Wheelchair does not respond to commands.

Bad motor connection. Bad brake coil.

Bad bearing in motor. Replace motor.

Loose wheel hardware. Tighten hardware, (use removable Loctite™ on

Poor connection or worn drive cylinder.

Battery voltage is too low.

Bad connection.

One motor is disengaged.

Electrical malfunction.

Controller programmed improperly.

Poor battery terminal connection. Clean the battery terminal connectors.

Check all connections. Ohm out each brake coil. Normal reading is 45-50 Ohms. Refer to Electro-Mechanical Parking Brake Test on page 29.

hardware). Follow torque settings in this manual.

Check drive cylinders and replace if necessary.

Check batteries and recharge if necessary.

Check connector.

Engage motor engagement handle.

Replace motor.

Replace joystick.

Reprogram controller. Refer to electronics manual provided.

Part No. 1125078 23 At’m and At’m QT

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