Greenheck 331-2856, 332-2856 - Siemens 6 Actuator (454206) User Manual
Caution, Warning
14
15
14
16
13
9
19
7
6
8
5
10
18
1
17
3
4
2
17
12
11
4"
Damper Shaft
These instructions apply to the external field installation of Siemens actuators on Greenheck models VCD Control Dampers
when they are duct mounted or sleeved.
This Siemens actuator is a pneumatic actuator with a 17.9 square inch effective diaphragm area and a 4inch stroke. It extends
to its holding position when air pressure is applied and spring returns to its fail position when the air supply is interrupted. This
model has a maximum air pressure of 30 psi.
Tools Required:
Wrenches:
(1) 3/8 , (2) 1/2, (1) 7/16, and (1) 3/4 in.
Part number 454206
Siemens #6 Actuator
Model 331-2856 & 332-2856
UL Listed Pneumatic Actuator with Spring Return
!
!
CAUTION
Device Malfunction Hazard. Improper set screw tightening causes device malfunction. Tighten set screws with
proper torque to prevent damper shaft slippage.
!
!
WARNING
Equipment Damage or Electrical Power Hazard. Line voltage can cause death or serious injury and short equipment
circuitry. Disconnect power supply before installation.
®
Part Number
Quantity
Description
1
1
Actuator Siemens #6
2
1
1/2 in. E-ring
3
1
Post 1/2 in. diameter
4
4
1/2 - 20 hex nut
5
1
Clevis (Std w/ act)
6
1
1 in. crankarm
7
1
3/8 - 16 x 21/2 carriage bolt
8
1
3/8 - 16 Spinlock nut
9
1
Clevis pin
10
1
Cotter pin
Part Number
Quantity
Description
11
4
1/4 - 20 1/2 in. bolt
12
4
1/4 - 20 1/2 in. bolt
13
1
Mounting bracket
14
1
Auxiliary bracket
15
1
Standoff bracket
16
4
1/4 - 20 1/2 in. thread cutting screw
17
4
#10 x 1/2 in. Tek screw
18
1
Ball bearing
19
1
1/2 in. crankarm