Perma Pure Baldwin-Series 10410 - Manual (Page 12)

Section J: Troubleshooting 12
H: T
ROUBLESHOOTING
If the front panel LCD digital indicators fail to show proper operating temperatures for all
controlled heat exchangers as described above, refer to the following troubleshooting
procedures:
The first problem to check is cooler overload. Check the incoming sample gas temperature,
moisture content, and flow rate through the heat exchanger to be sure all conditions are
within our published specifications. Overload requires more cooling power from the Model
10410 than is available. If all conditions are correct, then the problem is an electrical
malfunction, which can be traced using the troubleshooting table below. Overload to the
Model 10410 will not cause damage to the unit.
An optional Water Slip Relay Alarm Board is available to provide a relay (DPDT) contact for
remote alarm sensing. This contact closure can be used to stop and start a sample pump,
alarm enunciator, or computer mal-function alarm input. This relay is supplied integral within
the Model 10410 enclosure via terminal strip connections.
If the sample cooler is plugged in at normal room ambient temperature, with no load on the
heat exchangers, the cooler will idle at an indicated temperature of 4.0 to 4.7°C, on the
Channel 1 LCD display.
If SO
3
is carrying through the sample cooler as evidenced by liquid accumulation in a high
pressure drop device, such as the needle valve on a rotameter, or in the glass tube of the
rotameter, then:
1. Ambient temperature is too high.
2. Sample gas flow rate is too high.
3. Sample gas inlet dew point is too high.
4. Heat not properly dissipated from the Model 10410 due to improper
installation, cooling fan failure, or change in ambient temperature air flow.
5. Cooling fan not operating at proper RPM.
6. Thermoelectric Element burned out.
7. Water in the water overflow sensor holder.
Check the following:
1. Voltage on the Power Supply terminal strip sites 1 and 2 should be below
14.58 VDC at full load. If you measure greater than 14.8 VDC, a
thermoelectric cooling element may be defective.
2. Using a external digital display multimeter with thermocouple input
module, such as a Fluke multimeter, remove the thermocouple leads from
the main relay control card, located in the power supply section of the
cooler, and test with the multimeter to check thermocouple continuity.
For further assistance in troubleshooting cooler malfunctions, refer to the troubleshooting
table below and electrical diagrams in the Appendix.