Harford 500000299 Automatic Timer – Intermatic FF315M 15-Minute

Harford 500000299 Automatic Timer – Intermatic FF315M 15-Minute

The Harford 500000299 is an automatic timer associated with the Intermatic FF315M commercial spring-wound countdown timer for compatible Harford commercial walk-in refrigeration equipment. The FF315M provides a maximum 15-minute timed operating cycle and uses a mechanical spring-wound design that does not require electrical power to operate the timing mechanism.

The timer is designed to switch an assigned electrical load for a preset period and then automatically switch the circuit at the end of the timing cycle. The exact equipment function controlled by the timer depends on the original Harford walk-in wiring and equipment configuration.

Use Harford manufacturer part number 500000299 and Intermatic model FF315M as the primary identification references when confirming this replacement.

Product Details

• Harford Manufacturer Part Number: 500000299
• Timer Manufacturer / Reference: Intermatic
• Intermatic Model: FF315M
• Part Type: Spring-Wound Countdown Timer
• Maximum Timing Cycle: 15 Minutes
• Switch Type: SPDT – Single-Pole Double-Throw
• Input / Load Voltage Range: 125-277VAC
• Frequency: 50/60Hz
• Hold Function: No
• Neutral Required: No
• Mechanism: Analog / Mechanical Spring-Wound
• Operation: Countdown
• Finish: Brushed Metal / Silver
• Application: Compatible Commercial Walk-In Refrigeration Equipment
• PartsDirectOnline SKU: PD-722-483

What the Harford 500000299 Timer Does

The Harford 500000299 / Intermatic FF315M provides timed control of an assigned electrical circuit. The operator turns the timer dial to establish an operating period of up to 15 minutes. When the selected period expires, the spring-wound mechanism automatically changes the switch state.

This type of timer is useful when a connected electrical load should operate for only a limited amount of time rather than remaining energized indefinitely.

Important: The specific load controlled by 500000299 can depend on the original Harford equipment configuration. Verify the equipment wiring diagram and existing timer connections before installation.

15-Minute Spring-Wound Timer Design

The Intermatic FF315M is a commercial-grade mechanical countdown timer with a maximum 15-minute timing range. Unlike an electronic timer, the spring-wound timing mechanism itself does not require electrical power to count down.

The timer uses an SPDT switching configuration, allowing the timer contacts to change circuit state at the end of the selected timing period.

Electrical Ratings

The FF315M is designed for commercial electrical loads within its published ratings and supports 125-277VAC, 50/60Hz operation.

• Motor Load: Up to 1 HP at 125VAC
• Motor Load: Up to 2 HP at 250VAC
• Resistive Load: 20A / 2500W at 125VAC
• Resistive Load: 10A / 2500W at 250VAC
• Resistive Load: 10A / 2770W at 277VAC

The connected equipment load must remain within the timer manufacturer's electrical ratings. Always compare the original timer wiring and controlled load before installation.

Commercial Walk-In Refrigeration Applications

Harford manufacturer part number 500000299 is listed for commercial refrigeration service applications and is associated with Harford walk-in cooler and freezer equipment.

The same 500000299 reference is also found within related Kolpak commercial walk-in refrigeration parts documentation. Because Harford and Kolpak equipment can have different production revisions and electrical configurations, part-number confirmation should always be combined with an equipment model and serial-number check.

Common Signs a Timer May Need Replacement

• Timer knob does not count down
• Timer remains in the ON position after the selected period expires
• Timer switches off prematurely
• Spring mechanism no longer holds the selected time
• Timer contacts do not change state correctly
• Connected load does not operate when timer is activated
• Timer knob or mechanical mechanism is physically damaged
• Electrical terminals show signs of overheating or damage

These symptoms do not automatically mean the timer has failed. Wiring problems, incorrect supply voltage, loose terminals, a defective connected load, damaged controls, or another component in the circuit can create similar symptoms.

Technician Service Information

Before replacing the Harford 500000299, disconnect equipment power and inspect the original timer wiring and terminal arrangement. Confirm the controlled load and verify that it falls within the FF315M electrical ratings.

Inspect the terminals for loose connections, discoloration, corrosion, or overheating. If the timer appears mechanically functional but the controlled equipment does not operate, verify the connected circuit before condemning the timer.

After installation, operate the timer through a complete countdown cycle and confirm that the connected circuit changes state correctly when the selected timing period expires.

This Is Not a Conventional 24-Hour Defrost Clock

The Intermatic FF315M is a 15-minute spring-wound countdown timer. It should not be confused with a conventional refrigeration defrost timeclock that automatically schedules multiple defrost periods over a 24-hour cycle.

Match the original timer model and electrical configuration rather than substituting another refrigeration timer simply because it appears similar.

Before You Order

Confirm Harford manufacturer part number 500000299 and Intermatic model FF315M before ordering.

Verify the following against the existing timer and equipment:

• Harford manufacturer part number 500000299
• Intermatic FF315M identification
• 15-minute maximum timing range
• SPDT switching configuration
• 125-277VAC electrical requirements
• 50/60Hz application
• Terminal arrangement
• Controlled electrical load
• Equipment model number
• Equipment serial number
• Original wiring configuration

Do not select a timer based only on appearance. Timers with similar housings can use different timing ranges, switch configurations, electrical ratings, or operating functions.

Frequently Asked Questions

What is Harford part number 500000299?
Harford 500000299 is an automatic commercial timer associated with the Intermatic FF315M spring-wound countdown timer.

What is the Intermatic model number for Harford 500000299?
The timer is cross-referenced to Intermatic model FF315M.

How long does the FF315M timer run?
The FF315M provides an adjustable countdown period of up to 15 minutes.

What voltage does the Intermatic FF315M support?
The FF315M is rated for 125-277VAC, 50/60Hz applications within its published load ratings.

Is the FF315M an SPDT timer?
Yes. The FF315M uses a Single-Pole Double-Throw, or SPDT, switching configuration.

Does the FF315M require power to operate the timer mechanism?
No. The countdown mechanism is mechanically spring wound and does not require electrical power to perform the timing function. The timer still switches an electrical load, so correct wiring and electrical ratings remain essential.

Is Harford 500000299 a defrost timer?
It is a 15-minute spring-wound countdown timer rather than a conventional 24-hour refrigeration defrost timeclock. Verify the original equipment wiring to determine the exact circuit and function controlled by the timer.

How do I confirm Harford 500000299 is the correct replacement?
Match manufacturer part number 500000299 and Intermatic FF315M whenever possible. Also verify the equipment model, serial number, timing range, voltage, SPDT contact configuration, terminal arrangement, and controlled circuit before ordering.

Ordering Harford Walk-In Refrigeration Parts

PartsDirectOnline supplies commercial walk-in cooler and freezer replacement parts for refrigeration technicians, restaurants, supermarkets, foodservice facilities, warehouses, and maintenance departments. Using the correct Harford manufacturer number 500000299 and Intermatic FF315M reference helps improve part identification and reduce incorrect orders.