GB
58
3. Maintenance and servicing
3.1 Changing the fuse
The relay module Ex-RM1m in the
full version Ex-RM1m K 230 V
includes two fusing elements to
protect the outputs for pump and
solenoid valve in the connecting
compartment.
À Pump:
Fusing element Ex 4 A
semi time-lag
 Solenoid valve:
Fusing element Ex 500 mA
semi time-lag
E. Relay module Ex-RM1m / F. Repairs
Danger!
Live mains connection!
Electric shocks can kill you.
Replacing the fuse may only be carried out by qualified personnel – a trained electrician. The power
supply shall be disconnected and prevented from accidental re-connection throughout duration of the
work. As the blowing of a fuse generally precedes a fault, have the unit checked before changing the
fusing elements.
Danger!
Fire and explosion hazard due to electric current.
Combustion hazard. Blast wave: Flying parts can kill you.
Use only original fusing elements.
1. To replace the fuses, dismantle the relay module in accordance with steps 1-4 of chapter E 2.2.1
2. Disconnect the defective fusing element and remove from the top hat rail.
3. Snap a new fusing element onto the top hat rail and connect.
4. Mount the relay module in accordance with steps 11-14 of chapter E 2.2.2
F. Repairs
Repairs should only be made by the manufacturer or authorized Lutz-dealers.
Only use genuine Lutz spare parts.
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