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12.1.20. Sound signal

Prevention

At refusal of a signal at first check safety locks.

Check

PERFORMANCE ORDER
1. Disconnect the socket from a signal.
2. Directly connect the battery to a signal. In the absence of a sound replace a signal.
3. If the sound is, then check tension on a conclusion when pressing the signal button (the right arrow). In the presence of tension check connection with weight.
4. If there is no tension, then check the relay. It is necessary to consider that relays of a sound signal generally have 4 or 3 conclusions (3-output relays have connection with weight via the case).
5. If the relay is serviceable, then check tension on relay conclusions. If there is no tension, then check wires from a safety lock to the relay.
6. If on relay conclusions tension is, then press the button of a signal and check a chain of connection with weight between the relay and the button. If there is no break, then replace the signal button.
7. If via the button the chain on weight becomes isolated, then check existence in a chain from the relay for the button of break or short circuit.

Replacement

PERFORMANCE ORDER
1. For replacement of a sound signal disconnect the socket and turn off a bolt.
2. Installation is carried out upside-down.