Danfoss Filter Drier Shell
Specifications
- Refrigerants: CO2 (sub critical and trans critical system)
- Media Temperature: -55 to 100 °C / -67 to 212 °F
- Maximum working pressure (PS/MWP): 90bar / 1305 psig
Design
Installation
| Type | L minimum | |
| [mm] | [in] | |
| DCR 048 | 250 | 9.8 |
| DCR 096 | 400 | 15.8 |
Be careful of liquid refrigerant trap in the system as may result in very high internal pressures while heated up. Ensure proper pump down before removing the DCR cover Also drain out residual refrigerant before removing cover bolts.
Brazing
Welding
Customer best practice will still be needed:
- Remove cover assembly before brazing/welding.
- Do not remove core shaft from the cover.
- Brazing/Welding of the joints to be done by certified welder.
- Let them cool down.
- Clean the brazing /welding area after the instal-lation (remove remaining flux with a brush).
- This is an important operation and needs to be done with great care to remove all remaining flux.
- The external surface has TLP(Zink) coating to protect corrosion, however we recommend painting the DCR after installation for maximum corrosion protection.
- After brazing/welding use suitable coating on the connector surface to avoid any rust in the field.
Gasket
Do not install DCR insert before Brazing / welding
Note: Confirm correct top cover gasket is selected for DCR
Do not reuse the gasket
Do not use Oil/Grease on Gasket
How to tighten the bolts
| DCR Bolts M12*1.75 | |
| Step 1 | Finger tight all the bolts |
| Step 2 | 10 N.m/7.4 lbf.ft |
| Step 3 | 20 N.m/15 lbf.ft |
| Step 4 | 40 N.m/30 lbf.ft |
| Step 5 | 80 N.m /59 lbf.ft |
* Repeat until complete tightness has been reached.
| Component | Size | Torque (N.m/ lbf.ft) |
| Cover bolts | M12*1.75 | 80/59 |
| Plug** | 1/4” NPT | 50/37 |
| Plug** | 1/2” G | 50/37 |
| Core Shaft | M10 | 30/22 |
| Wing nut | M8 | 1.5 /1.10
(Hand tight) |
Note:
** Replace the plug for example with schrader/Needle valve etc..
© Danfoss | Climate Solutions | 2024.12
FAQ
Can I reuse the gasket for the DCR cover?
No, do not reuse the gasket. Ensure to select the correct top cover gasket for DCR and do not use Oil/Grease on the gasket.
What should I do with the rubber bush during assembly?
Remove the rubber bush while making assembly.
What type of connector and brazing material should be used?
Use Steel material with Silver-flo 55 + Easy-flow flux for brazing.
Documents / Resources
 |
Danfoss Filter Drier Shell [pdf] Installation Guide 023R9548, 23M128, 23M129, Filter Drier Shell, Drier Shell, Shell |