Description & Specifications:
GD870S Wall/Surface Mounted Door Holder
Overview The GD870S is a wall or surface-mounted electromagnetic door holder equipped with a manual test button.
Specifications
- Power Input: Selectable 12V DC or 24V DC
- Holding Force: 45kg (100lbs)
-
Current Draw:
- 125mA @ 12V DC
- 60mA @ 24V DC
- Dimensions: 80mm (H) x 80mm (W) x 65mm (D)
Frequently Asked Questions & Troubleshooting
Why is the magnet running warm or hot? It is normal for "power to lock" devices to feel warm, as they require constant power to operate. However, excessive heat can be caused by:
- Incorrect Voltage: Supplying 24V DC to a magnet configured for 12V DC operation.
- Insufficient Amperage: The power supply is not providing enough current, causing electrical resistance and heat.
- Voltage Drop: Using a long cable run with an inadequate wire gauge can reduce the current reaching the magnet, causing it to run hot.
Why is the armature plate vibrating? Vibration is typically caused by:
- A faulty or underrated power supply.
- Powering a 24V DC magnet with a 12V DC supply.
Why won't the magnet lock properly, allowing the door to be pulled open easily? Common causes for a weak lock include:
- Misalignment: The armature plate is not correctly aligned with the magnet.
- Power Issues: The power supply is faulty, underrated, or you are using a 12V DC supply for a magnet set to 24V DC.
Technical Tips
- Verify Wiring: Before powering on, double-check that the wiring connections match your chosen power supply (12V DC or 24V DC). Failure to do so can cause the magnet to overheat or fail to lock, eventually damaging the unit.
- Maintenance: Periodically clean the surfaces of both the magnet and the armature plate with a light oil to ensure optimal performance.
What's Included
- 1 x Magnetic Lock
- 1 x Armature Plate
- 1 x Fixing Kit