Raytheon 138-119, Operator'S And Service Manual

Page: 28 / 55

Change Over Box
138--119
22
3769DOC000002 Edition: April 06, 2005
3.4 Function test of Change Over Box and Change Over Switch
This function test has to be performed :
1. After first setting to work of the Change Over Box.
2. After a repair of the compass systems.
3. During a maintenance procedure of the Change Over Box (see section 5.1)
The function test has to be performed during the operation of the system, it means the sup-
ply voltage for the system is switched ON. To monitor the LEDs of each relay, the cover has
to be removed during the function test.
ATTENTION!
Pay attention during Maintenance and Repair. Avoid contact
with live cables. Adhere to respective safety regulations,
as there are VDE, BGV A2, OSHA 1919 and other national
and international safety standards.
ATTENTION!
Maintenance and Repair have to be performed only by trained
personnel, which is familiar with the safety requirement of this
device.
Removal of spare parts is not allowed at a system under load.
CAUTION!
Do not perform a function test during a sea trail.