Vogt P-24AL, Service Manual

Page: 105 / 149

P24AL & P34AL Service Manual
SERVICING OPERATIONS
12/2016
9-21
5. With the valve manually opened (stem out), open slightly only one stop valve (90) and purge air
from the line through the 1/4” tubing compression nut at the strainer. Then close that valve (90)
and open the other valve (90) to purge air from that section of the line.
6. When purging is complete, tighten the compression nut; manually close the solenoid valve (stem
in until it protrudes about 1/8” out from the housing).
7. Reopen stop valves (90) and check for leaks.
8. Adjust the regulating valve to approximately 60-65 psig to the freezer pressure during harvest.
See Page 5-7.
Figure 9-7
Thaw Gas Solenoid Valve Assembly
The Liquid Feed Solenoid Valve (20) , Figure 9-8, is opened and closed during the freezer cycle by
the float switch (10), in order to maintain the proper freezer refrigerant level. It is closed when the
machine is off to prevent liquid flow from the receiver to the freezer.