PMC 24-Hour DPST Timer w/NEMA 3 Enclosure [230V, 40A] (CD104)

The PMC CD104 is a 24-hour, double-pole single-throw (DPST) timer rated for 230V and 40A service with a NEMA 3 enclosure. It is intended for suitably rated pool or equipment scheduling installations.

How This Component Fits the System

Pool and spa controls coordinate equipment operation using a specific combination of wiring, inputs, outputs, and control-board versions. Correct identification is essential because parts from the same product family may use different harnesses, terminals, software revisions, or operating logic. Replacing the correct service component can preserve an otherwise functional system, but troubleshooting and installation should follow the manufacturer electrical documentation.

Confirm supply voltage, circuit current, enclosure suitability and wiring requirements before installation. Electrical work should be performed by a qualified installer.

Replacement and Maintenance Considerations

A well-planned repair includes inspecting the condition of the neighboring assembly before reinstalling the replacement. Look for worn mating surfaces, loose retainers, damaged connections, corrosion, or other conditions relevant to the component being serviced. Recommission the system using the manufacturer procedure rather than assuming that installing a new part alone resolves the original operating problem.

For this particular listing, the ordering reference is CD104. The identifying description is PMC 24-Hour DPST Timer w/NEMA 3 Enclosure [230V, 40A] (CD104). Matching the original unit and the manufacturer parts illustration is particularly important where closely related models have different mounting or electrical requirements.

Practical Features and Service Benefits

• Supports component-level repair of a compatible existing control system.
• Matching terminal positions and connector types reduces incorrect replacements.
• Confirm the exact revision and input or output requirements before purchasing.
• Disconnect all electrical power before opening or servicing the control enclosure.
• Qualified service personnel should test operation and safety functions after installation.
• Keeping the original equipment label and wiring diagram helps future troubleshooting.