Product Overview

OpenAir Spring Return 20 lb-in, Rotary GQD Series, Electronic Damper Actuators Technical Instructions
Document Number 155-760
June 23, 2008
Siemens Building Technologies, Inc. Page 11
Start-Up/
Commissioning,
Continued
GQD131
Spring Return
Floating
24 Vac/dc
1. Check Operation:
a. Connect wires 1 (red) and 2 (black) to a 24 Vac/dc power supply.
b. Apply a control signal (24 Vac/dc) to wire 6 (violet).
Allow the actuator shaft coupling to rotate from 0 to 90°.
c. Stop the control signal to wire 6 (violet).
d. Apply a control signal (24 Vac/dc) to wire 7 (orange).
Allow the actuator shaft coupling to rotate from 90° to 0°.
2. Check Spring Return:
a. Apply a control signal (24 Vac/dc) to wire 6 (violet).
Allow the actuator shaft coupling to rotate half way.
b. Disconnect wire 1 (red).
The spring returns the actuator shaft coupling to the fail-safe "0" position.
c. Connect wire 1 (red).
The actuator shaft coupling begins to move.
GQD221.1U
Two-Position
120 Vac
1. Check Operation:
a. Switch on 120 Vac power.
b. Allow the actuator shaft coupling to rotate from 0 to 90°.
2. Switch off power.
The actuator shaft coupling will return to the "0" position.
3. Check Spring Return:
a. Switch on 120 Vac power.
b. Allow the actuator shaft coupling to rotate halfway.
c. Switch off 120 Vac power.
The spring returns the actuator shaft coupling to the fail "0" position.
Service
WARNING:
Do not open the actuator.
If the actuator is inoperative, replace the unit.
Troubleshooting
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.
• Check that DIP switch is set correctly, if used.
• Use a Digital Multimeter (DMM) to verify that the operating voltage is within
range.
• 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.