Thermo King CSR Series User Manual

Refrigeration Maintenance and Service Operations
138
Procedure
1. Attach gauge manifold set (refer to “Gauge
Manifold Set Attachment and Purging” for
proper procedure for connecting to
compressor).
2. Close both hand valves on the gauge manifold
(front seated).
3. Connect charging hose to a source of nitrogen.
Adjust pressure regulator to the proper
pressure for the required procedure.
4. Purge system high side to low side.
The following procedures should utilize the
following maximum gas pressure:
• Leak Testing: 1034 to 1200 kPa, 10.34 to
12.00 bar, 150-174 psig,
• Purging/Dehydration: 69 to 138 kPa, 0.69 to
1.38 bar, 10-20 psig,
• Soldering: 35 kPa, 0.35 bar, 5 psig.
Refrigerant Recovery
When removing any refrigerant from a Thermo
King refrigeration system, use a recovery process
that prevents or absolutely minimizes the
refrigerant that can escape to the atmosphere.
Typical service procedures that require removal of
refrigerant from the unit include:
• To reduce the refrigerant pressure to a safe
working level when maintenance must be
performed on high-pressure side components.
• To empty the unit of refrigerant when an
unknown amount of charge is in the system
and a proper charge is required.
• To empty the unit of contaminated refrigerant
when the system has become contaminated.
NOTE: Always refer to specific recovery
equipment Operator and Service Manuals.
Vapor Recovery
1. Install a gauge manifold set on the unit. Attach
the service line to the recovery machine and
properly purge the lines. Set the recovery
machine for vapor recovery.
2. Keep the unit off and mid-seat the discharge
service valve.
3. Turn on the recovery machine and open (back
seat) both gauge manifold and hand valves.
4. Continue to operate the recovery machine
until unit pressures drop to 0 kPa, 0 bar, 0 psig
pressure.
CAUTION: Use only refrigerant recovery
equipment approved for and dedicated to
R-404A recovery.
1. Line pressure
2. Tank Pressure
3. Tank
4. Pressure Test Line to System
5. Safety Valve
6. Pressure Regulator
Figure 49: Typical Pressurized Gas Bottle with
Pressure Regulator and Gauges
AXA0194

Thermo King CSR Series Specifications

General

Brand	Thermo King
Model	CSR Series
Category	Refrigerator
Language	English