Invacare Ranger IISTANDARD, Ranger IIJR Motor Testing Figure, Troubleshooting Procedure

TROUBLESHOOTING PROCEDURE 2

WARNING

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 one (1) of the fol- lowing:

FWD WHEELCHAIRS - INSTALLING/REMOVING BATTERY BOXES in PROCEDURE 13 of this manual.

MWD WHEELCHAIRS - INSTALLING/REMOVING BATTERYBOXESinPROCEDURE14 ofthismanual.

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.

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

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 one (1) of the follow- ing:

FWD WHEELCHAIRS - INSTALLING/REMOVING BATTERY BOXES in PROCEDURE 13 of this manual.

MWD WHEELCHAIRS - INSTALLING/REMOVING BATTERYBOXESinPROCEDURE14 ofthismanual.

MOTOR TESTING (FIGURE 3)

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.

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

		Ohmmeter
Number of Floating		Motor Connector
Balls Will Vary
	FIGURE 3 - MOTOR TESTING
According to Charge

FIGURE 2 - USING A HYDROMETER TO

CHECK BATTERY CELLS (LEAD ACID)

13