Differential oil pressure switch DP
DP is a differential oil pressure switch used on compressors with oil pump in conjunction with the CM-RC compressor module. It is integrated in the bearing cover of the compressor and consists of
- a sensor unit (also "screw-in unit", screwed into the bearing cover) and
- an electronic unit (also "switching unit", screwed into the sensor unit).
A: Sensor unit
1: Gasket
2: O-ring
3: Thread
4: Hexagon for assembly tool
5: Thread for mounting the electronic unit
B: Electronic unit
6: Sensor head
7: Union nut
8: Housing, dimensions vary depending on model
9: Cable connection
- The DP-1 variant was used with the CM-RC-01 compressor module.
- The DP-2 and DP-3 variants replace DP-1 and can be used with the CM-RC-01 and CM-RC-02 compressor modules (DP-3 only with CM-RC-02).
They have the same functions and are interchangeable on the module.
When a compressor with CM-RC-02 is delivered, the entire differential oil pressure switch is mounted and electrically connected, depending on the pre-order.
The DP-2 and DP-3 use the same sensor unit as the Delta-PII. The electronic units differ in their cable lengths.
Variant | Cable length | Electronic unit |
|---|---|---|
DP-2 | 1 m | 347 317 21 |
1.2 m | 347 317 22 | |
3 m | 347 317 23 | |
DP-3 | 1 m | 347 317 10 |
1.2 m | 347 317 16 | |
3 m | 347 317 20 |
For details:
- KT-230: Technical information Compressor module CM-RC-01 for reciprocating compressors
- KT-231: Technical Information Compressor module CM-RC-01 for 8FTE-100K .. 8CTE-140K and 8FTE-100Z .. 8CTE-140Z
- KT-240: Technical Information Compressor module CM-RC-02 for reciprocating compressors
- KW-242: Retrofitting CM-RC-02 and configuration with the BEST SOFTWARE
- KT-170: Differential oil pressure monitoring, mounting and electrical connection
- AT-300: Schematic wiring diagrams for BITZER products