34
Figure
9.9 Assembly of valve bulb
9.10 SUGGESTED APPLICATION TECHNIQUES
For the most efficient thermal sensing, spread a thin film of thermal grease around the DTC Valve bulb
before installing into the top cap well. However for proper functioning of the valve this is not required.
At your discretion, field serviceability can be improved by installing a shut-off valve in the liquid line just
before the DTC Valve. The valve requires a solid column of liquid. A liquid line sight glass could be applied
to visually insure liquid flow.
9.11 COMPRESSOR OR VALVE SERVICE
1. Replacing a LBP scroll compressor using capillary tube, liquid injection solenoid and current sensing relay:
The compressor and DTC Valve eliminate the need for the solenoid and current sensing relay. These
devices may be left on if desired, but they are not required.
2. Replacing a LBP compressor using the DTC Valve:
We recommend replacing both the DTC Valve and the compressor at the same time. If you wish to use
the existing DTC Valve, the valve filter should be taken out and cleaned and/or replaced.
3. Replacing a DTC Valve on a LBP compressors:
Before replacing the DTC Valve, clean and/or change the filter to verify there is an unobstructed column
of liquid to the valve.
