TI_Unit_CO2_Stream_04_EN_Rev00
Ident number 3293976 (P/N 900-0010-00/Rev00)
1/3
Date of last update: Aug-22
Ref: TI_Unit_CO2_Stream_04_EN_Rev00
Application Engineering Europe
C
OPELAND
™
CO
2
R
EFRIGERATION
U
NITS
C
HANGEOVER
V
ALVE
S
ERVICE
K
IT
This technical information provides instructions for the replacement of the changeover valve on Copeland CO
2
refrigeration units. These instructions are valid only for Copeland CO
2
refrigeration units with M24x1.5 thread on the
PRV’s connected to the liquid receiver through the changeover valve. If the pressure relief valves (PRV’s) cannot be
disassembled from the changeover valve, it is necessary to replace the complete assembly (changeover valve +
PRV
’s). The PRV version with metric thread M24x1.5 cannot be used anymore. The PRV on the high-pressure side
is not affected by this change.
The service kit N°3290262 includes the components shown in the table below.
Components
Description
Quantity
Ident & Part
number
Valve-Change-Over 1/2"NPT
Changeover valve
1
3290262
510-1018-00
Valve-Safety assm 90 bar
Pressure relief valve (PRV)
2
3288776
(510-0902-01)
User manual - CV Kit
Instruction
1
3293976
(900-0010-00)
Table 1: BOM of changeover valve service kit
When replacing
the changeover valve including PRV’s, the instructions in this technical information must be carefully
followed. Use the recommended torque at each step.
Only qualified and authorized HVAC or refrigeration personnel are permitted to conduct the changes described in
this technical information. All appropriate safety measures must be considered.
Replacement of changeover valve:
▪
Release all the pressure/refrigerant from the unit
(Figure 1)
.
▪
Disassemble the changeover valve from the liquid receiver
(Figure 2)
.
▪
Connect a nitrogen hose to the liquid receiver so that no thread debris can fall into it
(Figure 3)
.
▪
Clean the liquid receiver thread
(Figure 3)
.
Figure 1
Figure 2
Figure 3
