Troubleshooting Chart - Intertek SD07R-20 Operator's Manual

Troubleshooting Chart

Problem
Unit does not run
(Digital Display is
blank)
Unit does not run
(STANDBY appears
on Digital Display)
No fluid circulation
Insufficient circulation
Unit does not heat
Insufficient heating
Temperature
unstable
Unit does not cool
110-512 PSC/EN
Possible Causes
No power to unit
Unit in Standby mode
Insufficient fluid in reservoir
Pump impeller jammed
Fluid viscosity too high
External tubing diameter
too small
Low line voltage
Insufficient fluid in reservoir
Temperature set point too
low
Safety Set Temperature too
low
Insufficient circulation
Low line voltage
Ambient temperature too
cool
Excessive heat loss
Insufficient circulation
Debris or mineral build-up
on pump, heater, or
temperature sensor.
Dust build up on air filter or
condenser
Blocked air ventilation
screens
Temperature set point is
too high
Excessive heat load
Ambient air temperature too
high (>35°C / 95°F)
Low or high line voltage
Corrective Action
Check that the electrical cord is secure and
connected to an operating electrical outlet.
Press Power Key on front panel.
Add fluid to reservoir.
Inspect pump and remove debris as required.
Replace with lower viscosity bath fluid.
Replace with larger diameter tubing.
Check and correct as required.
Add fluid to reservoir.
Increase temperature set point.
Increase Safety Set temperature.
See Insufficient Circulation, above.
Check and correct as required.
Increase ambient temperature or relocate unit.
Check for heat loss from external tanks and
hoses;
Check for vapor/heat loss from internal
reservoir.
Check pump flow and operation.
Clean as required.
Clean air filter and/or condenser as required.
Remove blockages as required.
Decrease temperature set point.
Check that heat load does not exceed capacity
of bath; correct as required.
Decrease ambient air temperature.
Check and correct as required.
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