Intermatic SW12HWK 12-Hour Spring Wound Timer Instruction Manual

1. Introduction

The Intermatic SW12HWK is a mechanical, spring-wound timer designed to replace standard wall switches. It provides energy-saving control by automatically limiting the ON time of connected loads such as fans, lights, motors, and heaters. This timer operates without electricity and offers a maximum timing duration of 12 hours, making it suitable for residential and commercial applications.

2. Important Safety Information

Please read and understand all instructions before installing or operating this device. Failure to follow these instructions may result in electrical shock, fire, or property damage.

• Always turn off power at the circuit breaker or fuse box before installation, maintenance, or servicing.
• Installation should be performed by a qualified electrician or in accordance with all local and national electrical codes.
• Do not exceed the specified electrical ratings of the timer. Refer to the 'Specifications' section for details.
• This device is intended for indoor use only.
• Ensure all wire connections are secure and properly insulated to prevent electrical hazards.

3. Product Features

The Intermatic SW12HWK timer offers several features designed for convenience and energy efficiency:

• 12-Hour Spring Wound Timer: Provides automatic shut-off for durations up to 12 hours.
• Energy Efficient: Operates mechanically without requiring electricity, contributing to reduced energy consumption and utility costs.
• Versatile Compatibility: Suitable for controlling various electrical loads including lights (compatible with LED and CFL bulbs), fans, motors, and heaters.
• Easy Installation: Engineered to replace any standard single or multi-gang wall switch. Features upfront terminal connections and a simple press-on knob design.
• Durable Design: CSA certified for reliability and safety.

This image illustrates the timer's key benefits, including its 12-hour spring-wound mechanism and compatibility with LED and CFL lighting, emphasizing energy and cost savings.

4. Installation Instructions

Follow these steps for safe and proper installation of your Intermatic SW12HWK timer:

1. Turn Off Power: Locate the circuit breaker or fuse that controls the switch you are replacing and turn it to the OFF position. Verify that power is off at the switch location using a voltage tester before proceeding.
2. Remove Old Switch: Carefully remove the existing wall plate and unscrew the old switch from the wall box. Disconnect the wires from the old switch, noting which wire was connected to which terminal if applicable.
3. Wire the Timer: The SW12HWK timer has two black wires. Connect one black wire from the timer to the 'Hot Wire' (incoming power) in the wall box. Connect the other black wire from the timer to the 'Load Wire' (going to the appliance/light) in the wall box. Use appropriate wire connectors (e.g., wire nuts) to secure these connections.
4. Mount the Timer: Gently push the wired timer into the wall box. Secure the timer to the wall box using the screws provided.
5. Install Wall Plate: Attach your existing or a new wall plate over the timer. The timer is designed to fit both toggle and decorator style switch plates without field modifications. (Wall plate sold separately).
6. Attach Knob: Press the timer knob firmly onto the timer shaft until it is securely seated.
7. Restore Power: Turn the power back ON at the circuit breaker or fuse box.

This diagram shows a simplified wiring setup for the Intermatic SW12HWK timer, illustrating how to connect the timer's two black wires to the hot and load wires within a standard wall box.

5. Operating Instructions

Operating the Intermatic SW12HWK timer is straightforward:

• Setting the Timer: To activate the connected load, simply turn the knob clockwise to the desired ON time (e.g., 1 hour, 6 hours, 12 hours). The timer will begin counting down immediately from the selected duration.
• Automatic Shut-off: The connected load will automatically turn OFF once the set time has elapsed.
• Manual OFF: To turn the connected load OFF before the set time expires, rotate the knob counter-clockwise to the 'OFF' position.

A close-up view of the Intermatic SW12HWK 12-Hour Spring Wound Timer, showing the white dial with time markings and the central knob for setting the countdown duration.

This image depicts the Intermatic SW12HWK timer installed in a bathroom setting, highlighting its function as a countdown timer for various applications such as exhaust fans.

6. Maintenance

The Intermatic SW12HWK timer is designed for maintenance-free operation under normal conditions.

• Cleaning: To clean the timer's surface, wipe it with a soft, slightly damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish or internal components.
• Periodic Inspection: Periodically inspect the timer and its wall plate for any signs of physical damage, loose connections, or unusual operation. If any issues are observed, turn off power at the circuit breaker and consult a qualified electrician for inspection or repair.

7. Troubleshooting

If you encounter issues with your Intermatic SW12HWK timer, refer to the following troubleshooting guide:

• Timer does not turn ON:
  • Ensure power is supplied to the circuit. Check the circuit breaker or fuse.
  • Verify that all wiring connections are secure and correctly made according to the installation instructions.
  • Confirm the knob is turned clockwise past the 'OFF' position to a desired time setting.
• Timer does not turn OFF:
  • Ensure the timer knob is not physically stuck or obstructed.
  • The internal spring mechanism may be faulty. If this is suspected, the unit may require replacement.
• Intermittent operation or flickering:
  • Check for any loose wiring connections within the wall box.
  • Ensure the total electrical load connected to the timer does not exceed its specified ratings. Overloading can cause erratic behavior.

If these steps do not resolve the issue, contact Intermatic customer support or a qualified electrician.

8. Specifications

9. Warranty and Support

For warranty information, technical assistance, or customer support regarding your Intermatic SW12HWK timer, please contact Intermatic directly. Refer to the official Intermatic website or the product packaging for the most current contact details and warranty terms.

Additional resources, including frequently asked questions and product documentation, may be available on the Intermatic corporate website.