Sterlco Micro Series Water Temperature Control Unit - Manual (Page 38)

Page 38 MICRO Series Water Temperature Control Units
6-5 Safety Devices
Caution!
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:
Pressure Switch
With the unit running, program a set point of 30ºF (-1ºC). Allow the process
temperature to drop under 100ºF (38ºC). When the process temperature reaches
that point, turn off the water supply. The pump should stop and the Low Water
Pressure indicator should illuminate. Turn the water supply on to reset the
pressure switch.
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.
6-6 Cleaning and Storage
•
Inspect the unit daily for leaks. Wipe down the unit periodically to remove dirt
and dust buildup, especially the motor casing.
•
Drain and flush the unit every six (6) months to remove sediment buildup.
•
Completely drain the unit and carefully blow out the piping with pressurized air
before placing the unit in storage.