Ambient
70° F
90° F
105° F
Models
Low/High
Low/High
Low/High
Freezer
4” Hg/105 PSIG
3” Hg/145 PSIG
2” Hg/185 PSIG
Medium Temp*
15 PSIG /110 PSIG
16 PSIG /150 PSIG
17 PSIG /190 PSIG
Dual Zone Frz/Ref
5” Hg/105 PSIG
4” Hg/145 PSIG
3” Hg/185 PSIG
Dual Zone Medium Temp**
12 PSIG /110 PSIG
13 PSIG /150 PSIG
14 PSIG /190 PSIG
Return to
Residential Refrigeration
and Front Venting Commercial Refrigeration Service Manual
System Operating Pressures
Note:
To check operating pressures, you must install access valves onto the process tubes. See Section
7.2.1.
Values in
Table 7-1
represent a range of normal pressures. The measured pressure can vary depending on
ambient conditions and at the point at which unit is in the refrigeration cycle.
Operating pressures shown in
Table 7-1
are nominal and dependent on
many factors (box temperature, position in the
refrigeration cycle, cleanliness of the condenser,
etc.), should only be used as reference.
Never add or remove charge based on the
operating pressures in
Table 7-1. These prod
-
ucts are critically charged and must have the
refrigerant charge weighed into the system with
accurate equipment to plus/minus 2 grams.
*Medium Temp = Refrigerator, Beverage Center, Wine Reserve, Beer Dispenser
**Dual Zone Medium Temp = Ref/Wine and Wine/Wine
Refrigeration System Repair Instructions
Page 7-3
Table 7-1. System Operating Pressures
