3 Phase Contactor
K2M
E00CONT18230
Schneider
K2M switches the Standby Immersion Heater on when the coil is energised.
K2M Contactor should operate when Housing Element Stat Standby in the
immersion housing calls for heat if the Duty Immersion Heater circuit has
tripped, KA1 is energised, and Housing Element OHS Standby is healthy.
Part Name:
Wiring Diagram Key:
Adveco Part Number:
Manufacturer's Part Details:
Function:
Specifics:
Testing:
1. With the power off, Test continuity between terminals 1L1 and 2T1 of K2M. The correct reading is open
circuit. Next test continuity between terminals 1L1 and 2T1 while pressing the contactor test button. The correct
reading is closed circuit. Repeat tests for 3L2/4T2 and 5L3/6T3. If the continuity is not correct, does not change
or the test button is stuck, replace K2M.
2. With the power off test continuity between A2 of K2M and the neutral of the isolator. The correct reading is
closed circuit. If open circuit, investigate the wiring.
3. With the power on and CB2 on, measure the voltage between 1L1/E, 3L2/E, and 5L3/E. The correct reading is
230V. If 0V, then test CB2.
4. With the power on, CB3 on, CB1 off, and Housing Element Stat Standby turned up all the way, measure the
voltage between A1 and Earth. The correct reading is 230V. If 0V, test CB3, KA1, Housing Element Stat Standby,
and Housing Element OHS Standby.
5. With the power on, CB2 on, CB3 on, CB1 off and voltage at A1, measure the voltage between 2T1/E, 4T2/E,
and 6T3/E. The correct reading is 230V. If 0V, then replace K1M.
EB0028
3. Troubleshooting
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P R A C T I C A L , E F F I C I E N T & S U S T A I N A B L E B U I L D I N G S E R V I C E S S O L U T I O N S
EB002
5-EB0028-EB0030 Control Panel
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Installation and maintenance manual
