5
Maintenance
Maintenance l 5-3
✐
NOTE: Portable dewpoint
monitors purchased from
Conair are provided with a male
connector that plugs into the
dewpoint check port. If you
purchased your portable
instrument elsewhere, the male
connector is available through
the Conair parts department.
NOTE: The dewpoint check port
was not included on the initial
release of the Carousel Plus
Dryers. It can be added easily.
Contact the Conair parts
department or follow the
alternate procedure.
✐
Checking the Dewpoint
It is a good idea to monitor the dewpoint performance of your dryer periodically
with a calibrated portable dewpoint monitor, to ensure it is performing at
maximum capacity. Even if your dryer has a dewpoint readout, comparing it to
a portable instrument periodically will confirm that the dewpoint sensor and
readout is performing properly.
To Check Dewpoint:
1 Connect your portable dewpoint meter to
the dewpoint check port of the dryer.
2 Turn on the portable instrument, and ensure
there is positive airflow through the sensor.
3 Monitor the readout and allow ample time for it to stabilize before discon-
necting the dewpoint monitor. Some dewpoint monitors require a substantial
amount of time for residual moisture to be purged from the sensor.
4 In the event the dewpoint in not satisfactory, refer to the Troubleshooting
section of the manual, under Process Dewpoint alarm for DC2.
Alternate Procedure: (for dryers with no dewpoint check port)
1 Stop dryer and allow it to cool.
2 Remove the plastic cover from the dryer., and locate the process heater tube.
3 Connect a portable dewpoint instrument to the 1/8 inch NPT port at the
process air outlet of the desiccant wheel assembly. If there are existing
connections for the dryer’s dewpoint sensor, locate a 2nd 1/8 inch NPT port, or
connect your dewpoint sensor in series with the dryer sensor. Do not install a
tee to split the air between the dryer’s sensor and your portable instrument.
This may cause one of them to be starved for adequate sample air.
(continued)
Replacement dewpoint
monitors, male connectors
and dewpoint check ports
are available from Conair.
Contact Conair Parts
(800) 458 1960
From outside of the
United States, call:
(814) 437 6861
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