User guide

Page 44 Royal Series Water Temperature Control Units
Make sure that the high limit on the controller is set to the values
listed in the following table, based on the switch adjustment. This
prevents the pump from cavitating and damaging the seal, the
switch, and heater element(s).
psig kPa Max. temp. ºF Max. temp. ºC
5 psig 34.4 kPa 227ºF 108ºC
10 psig 68.9 kPa 240ºF 116ºC
15 psig 103.4 kPa 250ºF 121ºC
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.