Sealed System Troubleshooting / Diagnostic Tables; Normal Operating Pressures - Sub-Zero 700TC-3 Service Manual

Troubleshooting Guides
SEALED SYSTEM TROUBLESHOOTING / DIAGNOSTICS TABLES
NORMAL OPERATING PRESSURES TABLE NOTES:
• Only enter the sealed system to check pressures if the Error Code Troubleshooting Guide and General
Troubleshooting Guide could not pinpoint the cause of the temperature problem.
• Always use solder-on process valves when entering the sealed system. Do NOT use bolt-on process valves as
they are prone to leak.
• Whenever servicing the sealed system, the high-side filter-drier MUST be replaced.
• Pressures listed below are not indicative of initial pull down, but rather of a steadily running and properly function-
ing appliance.
• Pressures listed are for reference only, as actual pressure readings may vary because of one or more of the fol-
lowing reasons:
1. Ambient temperatures (Pressures are based on a 70°F (21°C) Ambient).
2. Temperature set-points (Pressures listed below are based on set-points of 0°F (-18°C) in freezers and 38°F
(3°C) in refrigerators)
3. Food load quantity and temperature.
4. Condenser cleanliness.
5. Whether or not one or both refrigeration systems are operating.
6. Gauge calibration.
Model
Refrigerator
700TC/I-3
Freezer
Upr Refrig.
700TR-3
Lwr Refrig.
700TF/I-3
Refrigerator
736TC/I-3
Freezer
Upr Refrig.
736TR-3
Lwr Refrig.
#3758412 - Revision B - December, 2006
Integrated
Integrated

NORMAL OPERATING PRESSURES

Normal Low-Side Pressures
0 - 12 psi to 30 - 42 psi
5" Vac - 1 psi to 6 - 12 psi
0 - 12 psi to 30 - 42 psi
0 - 12 psi to 30 - 42 psi
5" Vac - 1 psi to 6 - 12 psi
0 - 12 psi to 30 - 42 psi
5" Vac - 1 psi to 6 - 12 psi
0 - 12 psi to 30 - 42 psi
0 - 12 psi to 30 - 42 psi
8-20
3
3 Series
Series
(700- T ALL)
(700- T ALL)
Normal High-Side Pressures
75 psi to 110 psi
75 psi to 120 psi
75 psi to 110 psi
75 psi to 110 psi
75 psi to 120 psi
75 psi to 110 psi
75 psi to 120 psi
75 psi to 110 psi
75 psi to 110 psi