PROCEDURE 2

TROUBLESHOOTING

T R O U B L E S H O O T I N G

WARNING

When reading a hydrometer, DO NOT al- low any liquid to come in contact with your eyes or skin. It is a form of acid and can cause serious burns, and in some cases, blindness. If you do get battery acid on you, flush the exposed areas with cool water IMMEDIATELY. If the acid comes into contact with eyes or causes serious burns, get medical help IMMEDIATELY.

The battery acid can damage your wheel- chair, clothing, and household items. Therefore, take readings cautiously and only in designated areas.

ONLY use distilled water when topping off the battery cells.

Most batteries are not sold with instructions. However, warnings are frequently noted on the cell caps. Read them carefully.

1.Remove the battery box(es). Refer to INSTALLING/ REMOVING BATTERY BOXES - GROUP 24 BAT- TERY BASE FRAMES orINSTALLING/REMOVING BATTERY BOX - GROUP 22 BATTERY BASE FRAMES in PROCEDURE 9 of this manual.

Number of Floating

Balls Will Vary

TROUBLESHOOTING

According to Charge

FIGURE 2 - USING HYDROMETER TO CHECK

BATTERY CELLS (LEAD ACID)

9.Flush hydrometer in cold running water by allowing the water to rise into hydrometer as far as possible. Do this several times to guard against burn damage.

10.Replace the battery caps.

11.Reinstall battery boxes. Refer to INSTALLING/RE-

MOVINGBATTERYBOXES-GROUP24BATTERY BASE FRAMES or INSTALLING/REMOVING BAT-

TERY BOX - GROUP 22 BATTERY BASE FRAMES in PROCEDURE 9 of this manual.

MOTOR TESTING (FIGURE 3)

2.Remove the battery caps from the battery.

3.Squeeze the air from the hydrometer.

4.Place the hydrometer into a battery cell.

NOTE: DO NOT fill hydrometer more than 3/4 full.

5.Draw up sufficient acid to cover float balls.

6.Tap lightly to remove air bubbles.

7.Number of floating balls indicates charge.

Number of Floating Balls

0

Discharged

1

25% Charged

2

50% Charged

3

75% Charged

4

100% Charged

* 5

Overcharged

 

 

* Check charging system.

NOTE: This procedure should only be performed on wheelchairs with the conventional motor/gearbox assem- bly. For gearless/brushless motors, there are no service- able parts. Return motor to manufacturer for testing.

1.On the 4-pin motor connector, locate the two (2) con- tacts in the red and black housings.

2.Set the digital multimeter to measure ohms (Ω).

3.Measure the resistance between the two (2) motor contacts.

NOTE: A normal reading is between 1 and 5 ohms (Ω). A reading of 0 ohms (Ω) or in excess of 15 ohms

(Ω) indicates a problem. High readings are generally caused by bad connections and/or damaged brushes. Contact authorized dealer or Invacare.

8.Flush the liquid back into the same cell after reading the float. Repeat this step until all cells have been prop- erly read. A shorted or dead cell can be detected when it is the only cell that does not charge.

12

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Invacare MWD, RWD Motor Testing Figure, Procedure Troubleshooting, Number of Floating Balls Will Vary, According to Charge
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Arrow FWD, RWD, MWD specifications

Invacare is a renowned name in the field of mobility technologies, consistently innovating and enhancing the mobility devices market. Among its outstanding offerings are the Invacare MWD (Mid Wheel Drive), RWD (Rear Wheel Drive), and Arrow FWD (Front Wheel Drive) wheelchairs. Each of these models serves unique user needs, featuring distinct designs and functionalities.

The Invacare MWD is engineered for exceptional maneuverability. Its mid-wheel drive technology provides a centralized drive wheel, allowing for tight turns and easy navigation in confined spaces. This makes the MWD particularly suitable for indoor use, where space can be limited. The MWD also features advanced suspension systems, offering superior shock absorption. This results in a smoother ride over various terrains, enhancing user comfort and stability.

On the other hand, the Invacare RWD focuses on robust outdoor performance. With its rear-wheel drive configuration, this model has excellent traction and provides powerful acceleration. The RWD is designed for versatility, equipped with larger wheels that can handle uneven terrain while providing a stable ride. Its durable construction ensures enhanced longevity, making it an ideal choice for users who lead an active lifestyle and require reliable mobility solutions on rugged ground.

The Arrow FWD wheelchair brings another dimension with its front-wheel drive system. This design allows users to easily navigate obstacles as the front wheels can pivot over them. The Arrow FWD is particularly suited for both indoor and outdoor use, as it combines the agility of the MWD with the stability seen in the RWD. It features a compact design, making it easier for users to position themselves in various settings and social situations.

All three models utilize Invacare's cutting-edge technologies, such as advanced control systems and customizable seating options, enabling users to find their optimal comfort and support levels. The customizable features also cater to individual user needs, promoting enhanced independence.

In summary, Invacare’s MWD, RWD, and Arrow FWD wheelchairs represent an impressive blend of functionality, durability, and user-centric design. Each model presents its own unique technologies and attributes, allowing users to make informed choices based on their specific mobility requirements, lifestyle, and preferences. Whether navigating tight indoor spaces or tackling outdoor challenges, Invacare’s range of wheelchairs ensures that users can experience mobility with confidence and ease.
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