Perma Pure Baldwin-Series MP5400 - Manual (Page 16)

Section J: Troubleshooting 16
J: T
ROUBLESHOOTING
Alarm Message Symptom Action(s)
Thermocouple
Failure Channel # Thermocouple is failing or
disconnected Ensure proper connection to TB6 for Channel 1, TB7 for
Channel 2.
Replace K-type thermocouple.
Water Slip Alarm Water has slipped passed the
thermo-electric cooler and tripped
the water slip sensor. Ensure system loading (gas flow and water %) does not
exceed cooler capacity.
Verify that the cooler last impinger is holding a constant
temperature near 5°C.
If a dry sensor still trips the alarm, clean the sensor or
replace if necessary.
Heat Exchanger
(Channel) Over
Temp Alarm Cooler channel does not maintain a
temperature below 10°C. Verify that the system loading (gas flow and water %) does
not exceed the cooler capacity.
Verify that each Peltier element is drawing approximately 6
Amps. Replace the Peltier element if the current draw is
low.
Calibrate the temperature inputs using a thermocouple
simulator.
Problem Check Action(s)
No LCD or LED(s)
and no fan. AC power input.
DC 3A fuse (F1) on control board.
AC 15A fuse on power supply.
Check for +15VDC at P1 & P11 of
control board. Ensure that AC power is connected.
Replace fuse as necessary.
Replace fuse as necessary.
If low reading, remove wires from P1 & P11, measure at
power supply and replace supply if voltage still is low.
Heat exchanger
remains at
ambient
temperature. Peltier element current draw.
(Should be above 6 amps.) Replace Peltier element.
Heat exchanger
frozen and cooler
indicates ambient
temperature. Thermocouple placement in heat
exchanger block.
Peltier current draw (>6A) for both
elements on that channel. Ensure proper placement.
Replace Peltier element.
Heat exchanger
does not reach set
temperature, but is
below ready
temperature. System loading.
Calibration and set temperature
adjustment.
Ensure system loading is not exceeding cooler capacity.
Adjust as necessary.
Heat exchanger
temperature cycles
up and down. Peltier element connections on
control board.
Ferrite beads on thermocouples
going into terminal TB1 & TB2 Ensure a firm connection on flag connectors on control
board. Ensure system loading is not exceeding cooler
capacity.
Wrap a Ferrite bead around thermocouple wires.
Water carryover in
system. Heat exchanger temperature.
(Should be below 6°C.) Ensure system loading is not exceeding cooler capacity.
Pump does not
start. LCD(s) are
green. Pump electrical connections. Ensure proper connections.
Replace relay board.