Sealed System Diagnostic Information; Normal Operating Pressures - Sub-Zero Wine Storage 315W Technical Service And Parts Manual

Wine Storage

SEALED SYSTEM DIAGNOSTIC INFORMATION

NOTE: The temperature/pressure table at right is for reference only. A
unit's temperature/pressure correlation may differ from those listed due
to: set-points, where the sealed system is in the refrigeration cycle,
ambient temperature, etc.
If a unit is experiencing temperature problems, it is recommended to
reference the General Troubleshooting Guide before accessing the
sealed system. After all mechanical and electrical components have
been ruled out, sealed system pressures can be checked and com-
pared against those listed in the tables below.
NOTE: Whenever entering the sealed system, always use solder-on
process valves. Do NOT use bolt-on process valves as they are prone
to leak.
NOTE: Whenever servicing the sealed system, the high-side filter-drier
assembly must be replaced.
Model
315W
If low side pressure is
NORMAL
LOW
LOW
HIGH
HIGH
Model 315W

NORMAL OPERATING PRESSURES

Normal Low Side Pressures
0 psi to 38 psi
PRESSURE INDICATIONS
& high side pressure is
NORMAL
LOW
HIGH
LOW
HIGH
7-5
Troubleshooting
Temperature
-30°F (-34°C)
-25°F (-32°C)
-20°F (-29°C)
-15°F (-26°C)
-10°F (-23°C)
-5°F (-21°C)
0°F (-18°C)
5°F (-15°C)
10°F (-12°C)
15°F (-9°C)
20°F (-7°C)
25°F (-4°C)
30°F (-1°C)
35°F (2°C)
40°F (4°C)
45°F (7°C)
50°F (10°C)
55°F (13°C)
60°F (16°C)
65°F (18°C)
70°F (21°C)
75°F (24°C)
Normal High Side Pressures
90 psi to 115 psi
possible problem is
MECHANICAL
(see General Troubleshooting Guide)
LEAK
RESTRICTION
INEFFICIENT COMPRESSOR
OVER CHARGE
#3758664 - First Edition - July, 2005
Pressure
10" Vac
7" Vac
4" Vac
0" Vac
2 Psi
4 Psi
7 Psi
9 Psi
12 Psi
15 Psi
18 Psi
22 Psi
26 Psi
30 Psi
35 Psi
40 Psi
45 Psi
51 Psi
57 Psi
64 Psi
71 Psi
78 Psi