Harford 500000299 15-Minute Countdown Timer – Intermatic FF315M

Harford 500000299 Countdown Timer – Intermatic FF315M

The Harford 500000299 / Intermatic FF315M is a manually set countdown timer for commercial walk-in refrigeration equipment that specifies this control. Its spring-wound mechanism provides a selected interval of up to 15 minutes, then changes the electrical contact state according to the equipment wiring.

This commercial replacement part uses SPDT contacts and has no hold setting. The manufacturer part number and Intermatic model reference provide the starting point for matching an existing timer.

How the Timer Works

Turning the knob starts the mechanical countdown. The timing mechanism operates without an electrical power supply, while the circuit it switches still requires the appropriate equipment power. The original wiring determines which component the timer controls and whether that component turns on or off when the interval ends.

Product Specifications

Electrical Load Ratings

Match the controlled load to its applicable rating below. Confirm the voltage, contact use and equipment wiring before selecting a replacement.

Part References and Equipment Compatibility

500000299 is cataloged under Harford and Kolpak, with Intermatic FF315M identifying the timer model. Use these references together with the equipment model, serial number and original control label to confirm the replacement.

For commercial walk-in service, verify the timer’s assigned circuit and installation location. The published ambient temperature range applies to the air surrounding the timer, so the mounting environment must be checked separately from the refrigerated compartment temperature.

Symptoms That Call for Inspection

• The dial stops moving before the selected interval finishes.
• The time setting slips, binds or cannot be selected normally.
• The controlled circuit fails to change state when the countdown ends.
• The knob, shaft or terminal area shows physical damage.

These observations help guide diagnosis. Have a technician check the timing mechanism, electrical connections and controlled component to determine which part needs service.

Before Ordering

• Confirm identification: Match part number 500000299 and model FF315M against the installed control or equipment parts information.
• Check timer operation: Verify the 15-minute maximum interval, SPDT contacts and absence of a hold setting.
• Check the electrical application: Confirm the circuit voltage, connected load and required switching action.
• Check mounting: Compare the original enclosure, mounting arrangement, available depth and terminal clearance.
• Check the environment: Confirm that the timer’s location meets its published operating temperature range.

For help matching the part, have the equipment model and serial number, timer label and installation photos available. Call 631-873-0509 for PartsDirectOnline fitment assistance.

Service and Installation

Disconnect equipment power before electrical work. A qualified technician should follow the equipment wiring diagram and the instructions supplied with the timer. After installation, complete a countdown cycle and verify that the controlled circuit changes state as intended.

Frequently Asked Questions

How long can the Intermatic FF315M run?

The manually selected countdown can run for up to 15 minutes. Match this timing range to the original equipment requirement.

Does this timer have a continuous-on hold setting?

The FF315M has no built-in hold setting. Confirm that the original application calls for this version when replacing an existing timer.

Does the countdown mechanism need electrical power?

The spring-wound timing mechanism operates mechanically. The connected electrical load still needs its proper power supply and wiring.

Will the connected load turn off when the countdown finishes?

That depends on the wiring. SPDT contacts support different switching arrangements, including reverse action. Confirm the required end-of-cycle behavior from the equipment diagram.

Does this timer schedule repeating defrost cycles?

The FF315M provides a manually started countdown. It does not program recurring daily defrost events. Confirm the function of the original control before choosing a refrigeration timer.

Which electrical rating should I use?

Use the rating for the actual load type, voltage and contact application. Resistive, motor and tungsten ratings are listed separately in the table above.

What is the silver dial plate made from?

The plate has plastic construction with a brushed metal appearance.

How do I confirm that 500000299 fits my walk-in?

Compare the manufacturer part reference, FF315M model marking, equipment model and serial number, electrical requirements and mounting arrangement. Call 631-873-0509 with those details for help checking the match.

Related Commercial Refrigeration Parts

• Harford walk-in cooler and freezer parts
• Kolpak walk-in cooler and freezer parts