Troubleshooting - Siemens OpenAir GIB Series Technical Instructions

OpenAir™ GBB/GIB Series Non-spring Return, 24 Vac, Floating Control
Service

Troubleshooting

Dimensions
Siemens Industry, Inc.
WARNING:
Do not open the actuator.
If the actuator is inoperative, replace the unit.
WARNING:
To avoid injury or loss of life, pay attention to any hazardous voltage, (for
example, 120 Vac) when performing checks.
Check that the wires are connected correctly.
1. Connect wires 1 (red) and 6 (violet) to a Digital Multimeter (DMM) with the dial set at
Vac. Apply a control signal (24 Vac) to wires 1 (red) and 6 (violet) to verify that the
operating voltage is within range.
2. Next connect wires 1 (red) and 7 (orange) to a DMM with the dial set at Vac. Apply
a control signal (24 Vac) to wires 1 (red) and 7 (orange) to verify that the operating
voltage is within range.
3. If the actuator is not working, check the damper for blockage. If blocked, remove
the obstacle and cycle the actuator power off and on. The actuator should resume
normal operating mode.
Figure 24. Dimensions of the ASK75.1U Weather Shield in Inches (Millimeters).
Figure 25. Dimensions of the ASK75.7U Weather Shield in Inches (Millimeters).
Technical Instructions
Document No. 155-177P25
June 22, 2015
Page 13