Replace Intermatic Timer Tabs: Step-by-Step Guide

An Intermatic timer, a widely used device for automating electrical circuits, often relies on durable but replaceable intermatic timer tabs to manage on/off cycles. A common issue encountered by homeowners and electricians alike involves worn or broken tabs impacting the timer’s scheduling precision. Replacing these tabs necessitates a few tools, namely a small screwdriver and possibly pliers, depending on the model such as the T101. This guide offers a detailed, step-by-step approach to resolve this issue, ensuring your Intermatic timer continues to function as intended for applications like pool pumps or landscape lighting.

Replacing Intermatic Timer Tabs: A Detailed Guide

The Intermatic timer is a ubiquitous and reliable workhorse for controlling everything from pool pumps to landscape lighting. However, like any mechanical device, its components can wear down over time. One common issue is the deterioration or loss of the timer tabs (also known as trippers). These small, triangular pieces are responsible for activating and deactivating circuits at specific times of the day. Replacing them is a straightforward process that can restore your timer to proper functionality. This guide provides a step-by-step approach to effectively replace your Intermatic timer tabs.

Understanding Intermatic Timer Tab Types and Compatibility

Before you begin, it’s essential to understand the different types of Intermatic timer tabs and ensure you purchase the correct replacement. Generally, Intermatic timers use one of two common tab types:

• Mechanical Tabs: These are the traditional, physically engaging tabs that press against the timer mechanism to trigger the on/off cycle.
• Digital Tabs (Simulated): While digital timers don’t use physical tabs, some offer a visual representation on the display, and adjustments are made through programming instead. This guide primarily addresses the replacement of mechanical tabs.

Furthermore, tabs are often color-coded to represent on/off functions. Typically:

• ON Tabs (Red or Green): Activate the connected circuit.
• OFF Tabs (Silver or Gray): Deactivate the connected circuit.

It’s vital to consult your timer’s model number and documentation to identify the correct replacement tabs. Most hardware stores and online retailers carry a wide selection of Intermatic timer tabs.

Step-by-Step Replacement Procedure

Here’s a detailed breakdown of how to replace your Intermatic timer tabs:

1. Safety First: Disconnect Power: The most crucial step is to completely disconnect the power supply to the timer. Locate the circuit breaker that controls the timer and switch it to the "OFF" position. Test the timer with a non-contact voltage tester to confirm the power is indeed off.

2. Open the Timer Enclosure: Using a screwdriver, carefully open the timer enclosure. You might need to remove a retaining screw or two. Take note of the wiring and internal components for reassembly reference if needed.

3. Remove Damaged or Missing Tabs: Carefully remove any broken, damaged, or missing tabs from the timer dial. You can use small pliers or tweezers if needed. Ensure no remnants of the old tabs are left behind as they can interfere with the new tabs.

4. Install New Tabs: Align the new tabs with the corresponding slots on the timer dial. The "ON" tabs should be placed at the desired "ON" times, and the "OFF" tabs at the desired "OFF" times.

   • Press the tabs firmly into the slots until they are securely in place.
   • Refer to the timer’s documentation or the diagram on the enclosure for the correct placement of the tabs according to your desired schedule.
   • Consider the direction of dial rotation to properly stagger your on/off cycle.

5. Verify Tab Placement and Orientation: Double-check that all the tabs are securely installed and oriented correctly. Ensure they are evenly spaced and will not interfere with each other as the timer dial rotates.

6. Restore Power and Test: Carefully close the timer enclosure and secure it with any retaining screws. Switch the circuit breaker back to the "ON" position. Observe the timer as it runs through a cycle. Ensure the connected device (e.g., pool pump, lights) activates and deactivates at the programmed times.

7. Fine-tune the Schedule: If necessary, adjust the position of the tabs to fine-tune the on/off schedule. Monitor the timer over a 24-hour period to ensure it operates according to your desired settings.

Troubleshooting Common Issues

Issue	Possible Cause	Solution
Device not turning on/off at programmed times	Incorrect tab placement	Verify the "ON" and "OFF" tabs are placed at the correct times on the dial.
Tabs falling out	Loose fit or incorrect tab type	Ensure the tabs are securely pressed into the slots. Confirm you are using the correct tab type for your Intermatic timer model.
Timer dial not rotating	Obstruction or mechanical issue	Check for any obstructions preventing the dial from rotating freely. If the issue persists, the timer mechanism may require repair/replacement.
Device constantly on/off	Short-circuit or wiring issue	Inspect the wiring connections to the timer and the connected device. If you suspect a short-circuit, consult with a qualified electrician.

By carefully following these steps and troubleshooting tips, you can successfully replace your Intermatic timer tabs and restore your timer to its proper functionality.

And that’s all there is to it! Replacing those tiny intermatic timer tabs might seem fiddly at first, but with a little patience, you can get your timer back on track and your lights running smoothly again. Now go forth and conquer that timer!