Shut Down Alarms; D G G Shut Down Alarms - Conair Thermolater vacuTrac User Manual

S D
HUT OWN
A
LARMS
Alarm
Low Water Pressure
The cooling water
pressure is less than
25 psi.
Note: The unit will
re-start automatically
after a two-second
delay if the water
pressure returns to at
least 25 psi.
Pump
The pump motor
overload has
tripped. The
contact is open.
WARNING:
Only qualified electri-
cal service personnel
should examine and
correct problems that
require opening the
unit's electrical
enclosure or checking
electrical current to
diagnose the cause of
a problem.
6-4
T
ROUBLESHOOTING
The Thermolator has detected a problem that could lead to equip-
ment damage or personal injury if it is not corrected.
N The Alarm LED lights and the STOP/RUN LED flashes red.
N The Thermolator automatically shuts down.
N The control displays a red LED or alarm code indicating the
source of the problem.
Possible cause
Is the water supply pres-
sure at least 25 psi?
Did the pressure switch
fail?
Did the cooling valve fail?
Is the correct voltage
supplied to the pump
motor?
Is the required water flow
greater than the pump's
capacity?
Is the motor overload
faulty or set incorrectly?
Is the pump working
properly?
Thermolator TW-1 and TW-2
Solution
Verify that the water supply is
on and delivering water at a
pressure of at least 25 psi.
Check for closed valve or faulty
pump in the supply circuit.
Watch gauges while turning
cooling water on and off. If
pressure vents automatically,
check vent or cooling valve.
Check the cooling valve.
Repairing Solenoid Valves
the Motorized Cooling Valve
instructions.
Supply voltage should match
the rating on the pump name
plate. If voltage is correct,
check wiring connections.
❒ Review pump sizing
for the application.
❒ Decrease the water flow
from the process.
Disconnect the power and open
the electrical enclosure. Verify
that the overload is set to trip at
the proper amperage, which
should not exceed the FLA.
Manually trip and reset the
overload. If the problem contin-
ues, replace the overload.
Resetting and Replacing
Overloads.
Replace the pump if supply
voltage, wiring and overload
settings are correct, but the
pump continues to draw exces-
sive current.
UGH015/0100
See
or
See