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 2) Dry the switch with a clean cloth.
 S 712-061
 (3)  If you have a PL3 test set, do this test:
 (a)  
Push and hold the test set against the ULB water switch. 1) Make sure that you hear a pulse sound. 2) Make sure that you see the LED light comes on and off.

 (b)  
Remove the test set from the ULB.

 (c)  
Make sure that the water switch on the ULB has no grease or dirt. 1) If necessary, clean the switch with water and detergent. 2) Dry the switch with a clean cloth.

 S 712-053
 (4)  If you have an ATS-260 test set, do this test of ULB:
 (a)  
Put the test set clip on the ULB.

 (b)  
Push and hold the PUSH TO TEST button.

 (c)  
Put the test set probe on the ULB water switch. 1) Make sure that a green LED shows. 2) Make sure that you can hear sounds from the test set. 3) Make sure that the amber LED comes on and off.

 (d)  
Release the PUSH TO TEST button.

 (e)  
Remove the test set.

 (f)  
Make sure that the water switch on the ULB has no grease or dirt. 1) If necessary, clean the switch with water and detergent. 2) Dry the switch with a clean cloth.

 TASK 23-71-03-402-019
 6. Underwater Locator Beacon Installation (Fig. 201)
______________________________________
 A. References
 (1)  AMM 23-71-01/401, Voice Recorder
 B. Consumable Materials
 (1)  B00541 Detergent, General Purpose
 C. Access
 (1)  Location Zones 253 Area Above Passenger Compartment Ceiling, Left - Section 46 253 Area Above Passenger Compartment Ceiling, Right - Section 46
 D. Installation Procedure
 S 422-007
 (1) Install the underwater locator beacon on the voice recorder:
 (a)  
Make sure that the water switch on the ULB has no grease or dirt. 1) Clean the water switch with a weak detergent.

 (b)  
LORAL/FAIRCHILD VOICE RECORDER MODEL A100A; Do this step: 1) Turn the ULB until the water switch points down. 2) Install the ULB with the water switch end down.

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 (c)  
LORAL/FAIRCHILD VOICE RECORDER MODEL A100; Do this step: 1) Turn the ULB unitl the water switch points right. 2) Install the ULB with the water switch end right.

 (d)  
Put the ULB into the cradle on the voice recorder.

 (e)  
Make sure that you can read the replacement date on the ULB.

 (f)  
Tighten the coverplate with the four screws.

 (g)  
Tighten the screws until the coverplate touches the frame of the cradle in the area of the screws.

 S 422-059
 (2)  
Do this task: Voice Recorder Unit Installation (AMM 23-71-01/401).

 S 412-038

 (3)  
Close the ceiling panel (AMM 25-22-02/401) in the aft passenger compartment.

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