Operation; Maintenance - Siemens RAJA+ Installation, Operation & Maintenance Instructions Manual

Operation:

• Ensure the door is locked.
• Rotate the Mechanical Latch away from OFF push button.
• Switch On the rocker switch.
• Check the status of amber LED. Wait till amber LED is
continuously ON then only proceed.
• Depending upon Selector switch knob position for phase
selection, Indication of incoming power supply voltage
can be seen on Dual VA meter.
• For starting the motor, press Green push button marked
'I' (Fig. 1).
• Line current of R phase is indicated by Dual VA meter.
• Motor is ON when green LED is ON.
• For stopping the motor press Red push button marked 'O'
(Fig. 1).
• For LMRA Auto / Bypass modes refer troubleshooting
guide A5E50797230A.
• For WLC Delivery / Suction / Dual tank modes, refer
troubleshooting guide A5E50797230A.
• Reset Operation
– If the overload relay trips, Reset manually. (Allow a
reset time of approx. 4 min.)

Maintenance:

• Switch off the controller and Put Latch on the OFF push
button, (marked 'O'). Disconnect the main supply by
switching the main switch & Rocker Switch Off before
doing any maintenance.
• Keep the interior dust free.
• Re-tighten the terminal screws from time to time as per
specified torque in table 2.
Contactor
outgoing terminals
Fig. 4: Representative fig. for Contactor - Relay Connection
• No maintenance is needed for overload relay. Please do
not open the relay.
• Replace contacts of the contactor if they were severely
pitted or when only 40% of the original contact tips
remains.
• Replacement of Overload Relay (Refer Fig. 4):
1. Select a proper relay exactly as per the original.
2. Slightly loosen the outgoing terminal screws of the
3. Disconnect the wires connected to the relay terminals.
4. Slightly loosen the outgoing terminal screws of the
5. Follow instructions given in Fig. 4 for removal of
6. Ensure that new relay hook is engaged in the slot on
7. Connect the relay terminals (L1, L2, L3) to (T1, T2, T3)
8. Tighten the contactor terminal (T1, T2, T3) screws.
9. Connect the relay terminals to Terminal block TB2.
10. Re-connect all the disconnected wires and check
For more Technical details like LMR-A, WLC wiring, operating
sequence, mounting details etc., refer Installation &
Troubleshooting guide no. A5E50797230A.
Hook on relay for
engagement
Replacement of coil
relay.
line contactor
relay.
contactor.
of Q1 line contactor
Care should be taken to fix the relay terminals &
relay to contactor in the exact position shown in
Fig. 2.
connections by referring to the wiring diagram.
(Fig. 5)
3