Bemko TS-GM1 24-Hour Mechanical Timer Switch Instruction Manual

1. Introduction

This manual provides comprehensive instructions for the installation, operation, and maintenance of the Bemko TS-GM1 24-Hour Mechanical Timer Switch. Please read this manual thoroughly before installation and use to ensure safe and efficient operation. This device is designed to control electrical circuits based on a programmed 24-hour schedule, suitable for applications such as automatic lighting, control circuits, and other timed operations.

2. Safety Instructions

• Always disconnect power to the circuit before attempting any installation, wiring, or maintenance.
• Installation should be performed by a qualified electrician in accordance with all local and national electrical codes.
• Do not exceed the specified maximum load capacity of 16A or 3500W. Overloading can cause damage to the device and create a fire hazard.
• This device is designed for indoor use only within the specified operating temperature range (-10 °C to +50 °C).
• Ensure proper grounding where applicable and secure all wire connections firmly to prevent loose contacts.
• Do not open or attempt to repair the device. Refer servicing to qualified personnel.

3. Package Contents

• 1x Bemko TS-GM1 24-Hour Mechanical Timer Switch

4. Product Overview

The Bemko TS-GM1 is a compact 24-hour mechanical timer switch designed for DIN rail mounting. It features a rotating dial for time setting and programming segments for scheduling ON/OFF cycles.

5. Setup

5.1 Mounting

The Bemko TS-GM1 timer is designed for DIN rail mounting (DIN/TH/TS 35 mm standard) inside an electrical enclosure. Snap the timer onto the DIN rail until it clicks securely into place.

5.2 Wiring

WARNING: Ensure power is disconnected before wiring.

1. Identify the input terminals (L for Live, N for Neutral) and output terminals (typically marked 1 and 2 for the switching contact). Refer to the wiring diagram printed on the device.
2. Connect the incoming power supply (220-240V AC, 50/60Hz) to the input terminals.
3. Connect the load (e.g., light fixture, appliance) to the output terminals. The timer features a 1 NO (Normally Open) switching contact.
4. Use wires with a cross-section of 2.5 mm² for all connections. Ensure all screw terminals are tightened securely to prevent loose connections and overheating.

5.3 Initial Time Setting

After wiring, restore power. Rotate the central dial clockwise until the current time aligns with the arrow indicator on the timer's face. The dial is marked for 24 hours (e.g., 18 for 6 PM).

6. Operating Instructions

6.1 Programming ON/OFF Cycles

The timer allows for up to 96 ON/OFF switching cycles within a 24-hour period. Each segment on the dial represents 15 minutes.

• To program an ON period, push the corresponding segments outwards.
• To program an OFF period, leave the segments pushed inwards.

For example, to turn a device ON from 7:00 AM to 8:00 AM, push out the four segments corresponding to 7:00, 7:15, 7:30, and 7:45.

6.2 Operating Modes (Manual Override)

The timer typically includes a manual override switch, often a small lever or slider, on its front face. This switch allows you to temporarily bypass the programmed schedule:

• Automatic Mode: Position the switch to the clock symbol or 'AUTO' setting. The timer will operate according to the programmed segments.
• Continuous ON: Position the switch to 'I' or 'ON'. The connected device will remain ON, regardless of the programmed schedule.
• Continuous OFF: Position the switch to 'O' or 'OFF'. The connected device will remain OFF, regardless of the programmed schedule.

Remember to return the switch to the automatic position for programmed operation to resume.

7. Maintenance

The Bemko TS-GM1 timer requires minimal maintenance. Periodically inspect the wiring connections for tightness and ensure the device is free from dust and debris. Clean the exterior with a dry, soft cloth. Do not use abrasive cleaners, solvents, or liquids directly on the device.

8. Troubleshooting

• Timer not switching:
  • Check power supply connections to ensure they are secure and live.
  • Ensure the manual override switch is in the automatic (clock symbol) position.
  • Verify that the programming segments are correctly pushed out for the desired ON periods.
• Incorrect timing:
  • Ensure the current time is correctly set on the dial.
  • Check for power interruptions. The timer has a power reserve of up to 100 hours, but prolonged outages may require resetting the current time.
• Device not powering on:
  • Verify the input voltage (220-240V) and frequency (50/60Hz) are correct.
  • Check the circuit breaker or fuse for the circuit.
  • Ensure the load is properly connected and functional.

9. Specifications

10. Warranty and Support

For warranty information or technical support regarding your Bemko TS-GM1 24-Hour Mechanical Timer Switch, please contact your retailer or the manufacturer, Bemko. Keep your purchase receipt as proof of purchase for any warranty claims.