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4-8 l Operation
Resetting the High Pressure Switch
of the Compressor
The high refrigeration safety pressure switch shuts off the compressor
immediately when the high refrigeration pressure reaches 230 PSI {15.9 bar}
without going through pump down during a low pressure cycle. If the high
pressure switch trips, it must be manually reset by pressing the “Reset” button
on the switch. The compressor can start immediately when this is reset so
caution should be exercised.
To reset the high refrigeration safety switch:
1 Be sure the main power is disconnected and the chiller is locked out. Always
disconnect/unplug and/or lockout the main power source before opening the unit
for servicing.
2 Remove the chiller’s right-side panel, as viewed from the control.
3 Locate the high refrigeration safety switch within the top portion of the
chiller’s cabinet.
4 Push the “Reset” button, until there is a “click”.
5 Replace the chiller’s right-side panel, as viewed from the control.
6 Reapply main power.
Reset
Button
NOTE: The High Pressure
Safety switch may not reset
due to the chiller’s refrigerant
state. Allow the refrigerant to
cool before attempting to
reset.
✐
CAUTION: The compressor can
start immediately when the
High Pressure “Reset” button
is pressed.