AEC TCU Series Open Reservoir Water Temperature Control Units - Manual (Page 43)

Page 44 Open Resevoir Water Temperature Control Units
6-5 Safety Devices
Make sure that only qualified electricians test safety devices!
Safety devices should be tested for function every six (6) months.
Perform the following procedures for testing:
Motor Overload
Disconnect main power. Open the electrical enclosure and rotate
the manual
TEST button on the motor overload to the tripped
position. Close the enclosure and reconnect main power. Push the
START button. The unit should not start and the Pump Overload
indicator should illuminate.
Press the RESET button. The unit is now ready for operation.
HAZARDOUS ELECTRICAL CURRENT PRESENT.
Maintain a safe ground and disconnect the power
supply before servicing the unit.
Make sure a qualified electrician makes electrical
connections; disonnect/lock out electricity using OSHA
20CFR 1910.147 standards when servicing the unit.
Safety Thermostat
Disconnect main power. Open the electrical enclosure and
disconnect the neutral lead on the safety thermostat from the
terminal strip. Protect the stripped lead to prevent short circuits.
Close the enclosure, reconnect main power, and push the
START
button. The heater should not turn on and the Over Temperature
indicator should illuminate. Disconnect main power before
reconnecting the thermostat lead.