EMERSON COPELAND CO2 Refrigeration Units Pressure Relief Valve Service Kit Instruction Manual

COPELAND™
NOTIVINUOJNI 1VDINHD-31
5upaau!5uE uowouddv
Date of last update: Aug-22
Ref: TI_Unit_CO2_Stream_05_EN_Rev00
Application Engineering Europe

COPELAND CO2 Refrigeration Units Pressure Relief Valve Service Kit

COPELAND™ CO2 REFRIGERATION UNITS PRESSURE RELIEF VALVE SERVICE KIT
This technical information provides instructions for the replacement of the pressure relief valve (PRV) on Copeland CO2 refrigeration units. These instructions are valid only for Copeland CO2 refrigeration units with M24x1.5 thread on the PRVs connected to the liquid receiver through the changeover valve. The PRV version with metric thread M24x1.5 cannot be used anymore and must be replaced by an adaptor M24x1.5 thread (male) to 1/2″-14 NPT (female) and a PRV with 1/2″-14 NPT port. The PRV on the high-pressure side is not affected by this change. The service kit N°3293932 includes the components shown in the table below.

Components| Description| Quantity| Ident & Part
number
---|---|---|---
Gasket-safety valve| Copper gasket| 2| 3175467
(020-1509-00)
Adaptor-M24X1.5-1/2NPT| Adaptor changeover valve to PRV| 2| 3293943
(034-0313-00)
Valve – Safety assm 90 bar| Pressure relief valve (PRV)| 2| 2-01)
(510-0902-01)
User manual – PRV Kit| Instruction| 1| 3293954
(900-0009-00)

Table 1: BOM of PRV service kit
When replacing the PRVs, 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 PRV 2:

• Close the changeover valve completely using the spindle (Figures 1 & 18).

• Remove the deflector from the PRV (Figure 2).

• Use 28-mm and 32-mm keys to remove the PRV (Figure 3).

• The torque must not be transferred to the changeover valve but must be held by the 32-mm key.
  

• Protect the opening of the changeover valve so that no debris fall into it (Figure 4).

• Clean debris/rust from the changeover valve, to place copper gasket (Figure 5).

• Remove hole protection (Figure 6).

• Clean and degrease the thread and copper sealing surface (Figure 7).
  

• Place copper gasket (Figure 8) and mount NPT adaptor; torque to 100 Nm using 32-mm and 30-mm keys (Figure 9).
  

• Apply teflon sealing tape (0.1×12 mm) to NPT PRV by 5 to 6 turns clockwise (Figure 10).

• Mount the PRV into the adaptor; torque to 40 Nm (Figure 11).
  

• Open the changeover valve (Figure 12), turn the spindle into middle position (Figure 13) and perform a bubble leak test (Figure 14) on the PRV.
  

• Mount the deflector and tighten it manually to 1-5 Nm (Figure 15).

• Open the changeover valve completely using the spindle (Figures 16 & 18) and repeat the procedure for PRV 1.

• The changeover valve must be fully open during unit operation (spindle out, Figure 16).

• Mount the spindle cap and check the presence of the copper gasket (Figure 17).
  

Table 2: Torques on the changeover valve in Nm
NOTE: For information on the maintenance and lifetime of the PRV, please refer to the unit application guidelines.

• The contents of this publication are presented for informational purposes only and are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability.
• Emerson Climate Technologies GmbH and/or its affiliates (collectively “Emerson”), as applicable, reserve the right to modify the design or specifications of such products at any time without notice.
• Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of any Emerson product remains solely with the purchaser or end user.
• Emerson does not assume responsibility for possible typographic errors contained in this publication.

TI_Unit_CO2_Stream_05_EN_Rev00
Ident Number 3293954 (P/N 900-0009-00/Rev00)

Documents / Resources

| EMERSON COPELAND CO2 Refrigeration Units Pressure Relief Valve Service Kit [pdf] Instruction Manual
COPELAND CO2, Refrigeration Units Pressure Relief Valve Service Kit, COPELAND CO2 Refrigeration Units, Refrigeration Units, COPELAND CO2 Refrigeration Units Pressure Relief Valve Service Kit, Pressure Relief Valve Service Kit, Relief Valve Service Kit, Valve Service Kit
---|---

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>