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Safetec SDS-2/6 Additional Fault Finding Instructions page 13

Smoke detection system

Problems with Fuses on Power Supply Module (SDS-2/6)

Blown

Fuse

Power supply module defective. Exchange power supply module.

External short circuit on the bus cable. Please disconnect bus cable from

terminal nos. 17, 18, 19 and 20 at the power supply module and start

system again. If fuse does not break again, please examine the bus cable

to locate the short circuit.

F5, F6

Short circuit in fan unit no.1. Please disconnect cable for fan no.1 at

terminal nos. 5 and 6. and start system again. If fuse does not break again,

please examine the cable and fan motor no.1 to locate the short circuit.

F6, F7

Short circuit in fan unit no.2. Please disconnect cable for fan no.2 at

terminal nos. 7 and 8. and start system again. If fuse does not break again,

please examine the cable and fan motor no.1 to locate the short circuit.

Fault Finding Instructions SDS26

Possible Reason

16.06.09

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