Grasslin FM/1 STUZ-L 01.76.0019.1 24-Hour Timer Instruction Manual

1. Introduction

The Grasslin FM/1 STUZ-L 01.76.0019.1 is an electromechanical timer module designed for integration into machine control panels, circuit boards, or other equipment. This timer provides 24-hour scheduling capabilities for various electrical loads, including heating, ventilation, air conditioning, refrigeration, lighting, security systems, circulating pumps, and OEM applications. It features a robust 21 Amp switching capacity.

2. Product Features

• 21 Amp SPDT Switch: Capable of handling significant electrical loads.
• Quick-Connect Terminals: Facilitates easy and secure wiring.
• Noise Immune: Designed for reliable operation in various environments.
• Captive Trippers: Features 15-minute intervals for precise 24-hour scheduling.
• True Clock Face: Provides an intuitive and easy-to-set interface.
• Compact Size: Allows for flexible installation in various enclosures.

3. Setup and Installation

This timer module is designed for panel mounting. Ensure all power is disconnected before beginning installation to prevent electrical shock.

3.1 Mounting

Mount the timer module securely within a control panel or equipment enclosure using appropriate fasteners through the designated mounting holes. Ensure adequate clearance for wiring and ventilation.

3.2 Wiring

Refer to the wiring diagram located on the back of the timer module for correct connections. Use insulated quick-connect terminals for all wiring to ensure safety and proper operation. The module typically requires a 110-120V AC, 60Hz power supply.

Figure 1: Back view of the Grasslin FM/1 STUZ-L timer module, illustrating the quick-connect terminals and the integrated wiring diagram for electrical connections. This diagram specifies connections for 110-120V AC power and load control.

• Connect the incoming power supply to the designated input terminals.
• Connect the load (e.g., light, pump) to the output terminals as per the diagram.
• Ensure all connections are tight and secure.

4. Operating Instructions

The FM/1 STUZ-L timer features a clock face with captive trippers for setting ON/OFF periods.

Figure 2: Front view of the Grasslin FM/1 STUZ-L 24-hour timer, displaying the clock face, hour markings (AM/PM), and the captive trippers used for setting specific ON/OFF times throughout a 24-hour cycle.

4.1 Setting the Current Time

1. Rotate the clock face dial clockwise until the current time aligns with the time indicator arrow (usually a small triangle or line on the stationary part of the timer).
2. Pay attention to the AM/PM markings on the dial to ensure correct time setting.

4.2 Setting ON/OFF Periods

The timer uses captive trippers around the clock face, each representing a 15-minute interval. These trippers can be pushed inwards or pulled outwards to set the desired ON/OFF times.

1. To set an ON period: Push the trippers inwards for the duration you want the connected device to be ON.
2. To set an OFF period: Pull the trippers outwards for the duration you want the connected device to be OFF.
3. The timer will cycle through these settings every 24 hours.

5. Maintenance

The Grasslin FM/1 STUZ-L timer module is designed for minimal maintenance. Regular inspection can help ensure long-term reliability.

• Cleaning: Periodically wipe the exterior of the timer with a dry, soft cloth to remove dust and debris. Do not use liquid cleaners directly on the timer.
• Inspection: Annually inspect wiring connections for tightness and signs of wear or corrosion. Ensure the trippers move freely and are not obstructed.
• Environment: Ensure the timer is installed in an environment free from excessive moisture, dust, and extreme temperatures, as specified in the product's operating conditions.

6. Troubleshooting

If the timer is not functioning as expected, consider the following:

• Timer Not Activating Load:
  • Check if the timer is receiving power.
  • Verify that the ON trippers are correctly set for the desired activation time.
  • Inspect wiring connections for looseness or damage.
  • Ensure the connected load is functioning correctly when directly powered.
• Incorrect Timing:
  • Ensure the current time is accurately set on the clock face, observing AM/PM.
  • Check that the trippers are firmly pushed in or pulled out for the desired intervals.
• Timer Motor Not Running:
  • Confirm power supply to the timer.
  • If power is present and the motor is still not running, the timer may require replacement.

If issues persist after troubleshooting, contact a qualified electrician or the manufacturer for assistance.

7. Specifications

8. Warranty and Support

For specific warranty information and technical support, please refer to the documentation provided with your purchase or contact Grasslin customer service directly. Keep your proof of purchase for warranty claims.

Contact information for Grasslin can typically be found on their official website or on the product packaging.