Resetting The Over-Temperature Safety; Troubleshooting Chart - PolyScience LX Immersion Circulator Operator's Manual

Reset ting the Over-Temperature Safet y
The Circulator's automatic over-temperature safety* removes
power from the unit whenever the fluid temperature exceeds a
factory-set temperature. This safety is reset as follows:
1. Place the power switch on the rear of the unit in the Off
position.
2. Disconnect the electrical power cord from the electrical outlet.
3. Allow the fluid in the reservoir to cool.
4. Remove the plate covering the red reset button.
5. Press the red reset button.
6. Replace the cover plate.
7. Restore power to the unit.
8. Press the Run button.
If the problem persists, contact your supplier.
Troubleshooting Char t
Problem
Unit does not run
(Digital Display is
blank)
Unit does not
run (Neither the
Circulating nor
Heating icon is
lit)
No fluid
circulation
110-874
Possible Causes
No power to unit
Over-temperature
safety has tripped
due to high liquid
temperature
Unit in Standby
mode
Unit in Standby
mode
Insufficient fluid in
reservoir
Pump impeller
jammed
Corrective Action
Check that the electrical cord
is secure and connected to an
operating electrical outlet.
Allow fluid in the reservoir to cool
and reset over-temperature safety
(see above).
Press Run button.
Press Run button.
Add fluid to reservoir.
Inspect pump and remove debris
as required.
*Over-
Temperature
Safety Reset
Button
17