Contactor

TM 5-6625-2691-13&P

4-29. Contactor

above without touching the capacitor with your fingers.

The needle should jump momentarily and then to in-

a. General. A three pole, single throw, 200 ampere,

finite resistance (para 7-2).

240 volt AC, 28 volt DC coil contactor (fig. 1-2) is sup-

b. Removal. Using figure 4-2 as a guide, remove the

plied for applying the loads to the generator.

filter capacitor.

b. Testing. Test the contactor for continuity using a

c. Cleaning. Clean with filtered compressed air.

multimeter (para 7-2).

d. Installation. Using figure 4-2 as a guide, install

c. Inspecting and Cleaning. Visually inspect for

the filter capacitor.

damage to case. Clean with compressed filtered air.

d. Removal and Installation. Notify direct support

4-32. Voltage Plug

maintenance for replacement.

a. General. Two receptacles and a plug are provided &

4-30. Control Transformer

for changing the voltage connections of the test set.

b. Testing. Test the voltage plug for continuity using

a. General. Three control transformers (fig. 1-2) are

a multimeter (para 7-2).

supplied to furnish the control power to the fan motor

c. Cleaning. Clean with filter compressed air.

and contactor.

d. Removal and Installation. Notify direct support

b. Testing. Test the transformer for continuity using

maintenance for replacement action.

a multimeter (para 7-2).

c. Inspecting and Cleaning. Inspect for burns, cracks

4-33. Fan

or other damage. Clean with compressed filter air.

a. Inspecting. Inspect for unbalance of blade by snap-

d. Removal and Installation. Notify direct support

ping the master switch "ON" and then "OFF". If the

maintenance for replacement.

fan is off balance, broken or damaged, replace it.

4-31. Filter Capacitor

b. Removal. To remove fan, loosen set screw on fan

hub and pull off gently.

a. Testing. Make sure the capacitor is discharged

c. Cleaning. Clean blades with a damp cloth.

before testing. For testing, use an ohmmeter set at

d. Installation. To replace fan, slip hub inch in

RX10,000 scale. Placing one lead on the terminal and

from the end of the shaft. Retighten set screw firmly.

the other on the capacitor body, the reading should be

infinite. Then place leads on capacitor in reverse of

4-11