INTERMATIC GM40AV Mechanical Timer 24hr Nema3r 40a Min 15min

Intermatic GM40AV mechanical timer provides automated process solutions to program and schedule ON / OFF cycles for precise timing and to aid in optimising energy usage with enhanced equipment performance. It is used in generator exercise, septic treatment, air movement & ventilation and refrigeration merchandiser.

Working Mechanism:

• The timer operates using a clockwork mechanism driven by a motor. This motor is powered by the supply voltage and constantly turns the clock dial of the timer.
• The clock dial is equipped with small tabs known as 'trippers' that are positioned around its edge. These trippers are attached to the timer's rotating mechanism and can be manually set to specific times on the clock.
• Users set the desired ON and OFF times by placing the trippers at corresponding hours on the clock dial. When a tripper reaches a stationary ON lever, it triggers the switch contacts to close, enabling the flow of electrical current. When it reaches an OFF lever, the switch contacts open, interrupting the current flow.
• The movement of the trippers activates the switch contacts, which control the connected electrical load. When an ON tripper engages the ON lever, the contacts close, turning on the load. Similarly, when an OFF tripper engages the OFF lever, the contacts open, turning off the load.
• As the clock dial continues to rotate, the trippers repeat their cycle, causing the switch contacts to open and close at the specified times. This repetitive action enables the timer to manage the load based on the designated ON and OFF schedules.

Features:

• This mechanical timer comes with captive trippers, preventing the risk of misplacement.
• It is equipped with a self-recharging battery backup.
• This Intermatic GM40AV mechanical timer has the inclusion of power and status LED indicators to enhance operational visibility.
• It features a DPDT switching configuration with standard 2 NO and 2 NC contacts for comprehensive control.
• This Intermatic GM40AV mechanical timer incorporates a manual three-way ON / OFF / AUTO override switch and an easy-to-read clock face for user-friendly operation.

Frequently Asked Questions:

Q. What is the operating temperature of Intermatic GM40AV mechanical timer?

A. It has an operating temperature range of -40 to 131 degrees F.

Q. How to install Intermatic GM40AV mechanical timer?

A.

• Begin by opening the door and releasing the spring latch to remove the interior protective cover.
• Next, release the spring latch that holds the bottom of the printed circuit board to remove it.
• Choose the knockouts you intend to use. To remove the inner 1/2 inch knockout, insert a flathead screwdriver into the slot and gently punch the knockout loose. Remove the slug. If a 3/4 inch knockout is needed, remove the outer ring using pliers after taking out the 1/2 inch knockout. If required, use a knife to smooth the edge.
• Position the enclosure at the desired mounting location and mark the three mounting holes. First, install the top screw using one of the provided spacers, then hang the enclosure on the keyhole. Drive the remaining two screws at the enclosure's bottom through the mounting holes, each passing through a supplied spacer, and secure them to the wall.
• Prior to attaching the conduit hubs to the enclosure, connect them to the conduit. Once the hubs are inserted into the enclosure, cautiously tighten the hub lock nut. Avoid over-tightening.
• Reattach the printed circuit board, ensuring that the spring latch at the bottom of the PCB is properly engaged.
• Adhere to national and local electrical and safety codes when wiring (refer to wiring diagrams).
• Connect all ground wires to the ground lug inside the case located at the enclosure's bottom.
• Replace the interior protective cover.
• Finally, close the enclosure door.

Q. What is the maximum wire size that Intermatic GM40AV mechanical timer can accommodate?

A. It can accommodate a maximum wire size of 8 AWG.

Q. For how long can this mechanical timer be used continuously?

A. They feature an operation mode of 24 hours and are rated for 50000 operations at full load.

Q. How to set the timer in Intermatic GM40AV mechanical timer?

A. Begin by gently rotating the program dial in a clockwise direction. Gradually align the time of day displayed on the outer dial with the triangle marker positioned around the 2 o°clock mark. Next, adjust the time to the exact minute by slowly turning the minute hand clockwise. Align the time of day (including AM or PM) displayed on the outer dial with the triangle marker found on the inner dial.