Adveco EB0025, Руководство по эксплуатации продукта

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240V Relay
KA2
E002P REL 230
KA2 changes the state of KA1 when there is a fault. This switches the load
between the duty immersion heater and the backup immersion heater. KA2
will also activate the destrat pump in a system fault condition.
Relay KA2 is kept energised when the system is healthy by a live supply fed to
its coil A1 at all times when CB3 is on, and CB1 auxiliary and Dual Stat-Element
OHS 18kW are healthy (closed circuit.) When either CB1 Auxiliary or Dual
Stat-Element OHS 18kW trips, the live feed to A1 of KA1 is lost and KA2 de-
energises which causes the NC contacts between terminals 11 and 12 to close
thereby energising KA1. When de-energised KA2 will also switch the destrat
pump on (bypassing the timeclock) and run the pump permanently.
When the system is healthy KA2 should be energised (pulled in) at all times, this
may be indicated by an LED (if fitted.) When the Dual Stat-Element OHS 18kW
or CB1 trip KA2 should de-energise.
Part Name:
Wiring Diagram Key:
Adveco Part Number:
Function:
Specifics:
Correct Operation:
Testing:
1. With the power off, test continuity between terminal 11 to 12 and 21 to 22 of KA2. The correct reading is
closed circuit . If open circuit replace KA2.
2. With the power off test continuity between A2 of KA2 and the neutral of the isolator. The correct reading is
closed circuit . If open circuit investigate the wiring.
3. With the power on and CB3 on, measure the voltage between 11/E. The correct reading is 230V. If 0V then
test CB3.
4. With the power on and CB5 on, measure the voltage between 21/E. The correct reading is 230V. If 0V then
test CB5.
5. With the power on, CB1 and CB3 on, measure the voltage between A1 and Earth. The correct reading is
230V. If 0V, test CB1 Aux, Dual Stat-Element OHS 18kW.
6. With the power on, CB1 and CB3 on, and 230V at A1, measure the voltage between 12/E. The correct
reading is 0V. If 230V replace KA2.
7. With the power on, CB1, CB3, CB5 on, and 230V at A1, measure the voltage between 22/E. The correct
reading is 0V. If 230V replace KA2.
8. With the power on, CB1, CB3, CB5 on, and 230V at A1, trip CB1 and then measure the voltage between A1
and Earth. The correct reading is 0V. If 230V, test CB1 Aux.
9. With power on, CB3 and CB5 on, CB1 tripped, and 0V at A1, measure the voltage between 12/E. The correct
reading is 230V. If 0V replace KA2.
10. With power on, CB3 and CB5 on, CB1 tripped, and 0V at A1, measure the voltage between 22/E. The correct
reading is 230V. If 0V replace KA2.
EB0028
3. Troubleshooting
34
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 - Installation and maintenance manual