Troubleshooting - M&C TEC1 Series Operation Manual

TROUBLESHOOTING

The following table aims to point out possible operational problems and offer solutions to such problems (not
applicable during the startup procedure).
Problem/Indication Possible cause
Not turning on
Condensate sensor
alarm
No sample gas flow
High O2 / low
pollutant readings
Does not maintain
setpoint
temperature
No mains supply
Power supply failed
Overloading of the
refrigeration capacity of the
cooler due to too much
water vapor or too great a
sample flow rate
Air leak in the condensate
removal tubing
Failure of the sample cooler
The cooler is not cold
enough
Inadequate drain apparatus
of a fault in the condensate
removal equipment.
Excessive flow rate
High ambient temperature
Defective cooling fan
Heat exchanger plugged
Alarm shutoff
Leak
Defective peristaltic pump
tubing
Broken or leaking heat
exchanger
Ambient temperature too
high
Flow rate/water content too
high
Failed Peltier element
Action/Check
Check for mains supply voltage at terminals
against nameplate. Neither the display nor the
heat sink fan will be operational.
Check for mains supply voltage at power supply,
then verify 24VDC output direct from p/s. If no
24VDC, replace power supply. Heat sink fan
should be operational.
Reduce flow rate
Verify moisture content of sample and compare
to operating specifications
Replace tubing, verify all connections are leak
free
Verify chiller is at setpoint temperature
Verify drain tubing is unobstructed and
equipment is functioning satisfactory
Reduce flow rate
Reduce the ambient temperature
Verify air flow over fins, clean fins or service fan
Check for an obstruction
Verify no alarms are displayed, address as
required
Loose connection, verify all fittings are leak free
on the vacuum side of the system
Replace tubing
Remove heat exchanger and replace if broken
Reduce the ambient temperature
Lower the flow rate thru the cooler and observe
the results. If condition corrects itself, consult
the factory for further troubleshooting
Measure the resistance between the red and
black Peltier leads. A failed Peltier element will
read high resistance or "open"
19