Low pressure switch /low – code: 5270310 – Dometic

Dometic low pressure switch 5270310 (Low Pressure Switch)

The low-pressure switch Dometic with code 5270310 is a control and safety component used in Dometic marine air conditioning systems. Its main function is the supervision of the pressure on the low side of the refrigeration circuit, contributing to the correct management of the compressor operation in the presence of irregular conditions.

This product sheet collects the available and verified information for the identification of the spare part, useful during maintenance, replacement, or spare parts procurement for onboard systems.

Spare part features and details

The component is identified as Low pressure switch (Low Pressure Switch) and is listed in the spare parts catalogs as an original Dometic spare part with the corresponding code.

Technical data confirmed

• Brand / Manufacturer: Dometic
• Product code: 5270310
• Type: Low pressure switch
• Model: CC80-0.7/1.7
• Field of intervention: 0.7 / 1.7 bar

Correct component identification

For a correct replacement, it is advisable to always verify:

• the Dometic code 5270310 reported on the unit's documentation or spare parts list;
• the wording of the model CC80-0.7/1.7 when present;
• the correspondence of the type (low pressure switch) compared to the installed component.

Component function

The low pressure switch is a safety device that operates on the refrigeration circuit. Specifically:

• it monitors the pressure on the low side of the circuit;
• stops the compressor when the pressure falls below the expected value;
• protects the system from operating with refrigerant shortage or abnormal conditions of the refrigeration circuit.

In the nautical field, where systems operate under variable conditions and with intensive usage cycles, the presence of a properly functioning pressure switch is an integral part of the unit's protection logic.

Compatibility and applications

Compatibility verified

The code 5270310 it is used as an original Dometic spare part in chillers and heat pumps of the PCWM/FCL series and is listed in the official spare parts catalogs with the model CC80-0.7/1.7.

Typical applications in the nautical field

The component is intended for use on:

• Dometic marine chillers;
• sea water air conditioning systems of the PCWM/FCL;
• nautical air conditioning systems that require control of the low pressure of the refrigeration circuit.

If you are working on an existing system, verifying the spare part code remains the most reliable method to confirm compatibility, especially in the presence of production variants or different configurations of the same machine family.

Operational advantages (from a maintenance perspective)

A correctly selected and installed low pressure switch allows maintaining the protection logic provided by the manufacturer. In particular, this spare part is useful for:

• to restore the low pressure control functionality in case of failure or drift of the existing component;
• supporting diagnosis and maintenance activities, when the machine signals abnormal conditions related to pressure on the low side;
• maintain the system compliant with the configuration provided by the Dometic spare parts list, thanks to identification via code 5270310.

In a professional context (shipbuilding, technical assistance, onboard maintenance), having the correctly identified spare part reduces machine downtime related to procurement errors or replacements inconsistent with the original configuration.

Usage and important notes

General replacement instructions

Replacing a pressure switch on a refrigeration circuit typically falls under technical maintenance activities. Before proceeding, it is good practice to:

• identify the component through code 5270310 and, when available, through model CC80-0.7/1.7;
• verify that the requested type is actually a low pressure switch (not high pressure or other sensor/control);
• refer to the unit documentation (electrical diagram and spare parts list) for the correct restoration of connections and configuration.

Note on diagnosis and anomalies

The low pressure switch activates when the pressure drops below the expected value. In case of repeated activations, besides the component itself, it may be useful to consider a comprehensive check of the refrigeration circuit and the operating conditions of the system, following the procedures provided by the manufacturer.

Supplier information

Supplier: Dometic Italy Marine SRL -Soc.Unipers. Art.2497 cc Dometic Sweden AB
Supplier product code: 5270310

FAQ – Frequently Asked Questions

What is the code of the Dometic low-pressure switch in this sheet?

The indicated product code is 5270310, listed as an original Dometic spare part.

What type of component is the Dometic 5270310?

It is a low pressure switch used as a safety device to control the pressure on the low side of the refrigeration circuit.

What is the model associated with the pressure switch 5270310?

In the available data, the pressure switch is associated with the model CC80-0.7/1.7.

What is the intervention range indicated for this pressure switch?

The intervention range indicated is 0.7 / 1.7 bar.

On which Dometic units is the code 5270310 indicated as compatible?

It is listed as an original Dometic spare part for chillers and heat pumps of the PCWM/FCL series, as shown in the official spare parts catalogs.