Greenheck 331-2856 Installation, Operation And Maintenance

Installation, Operation and Maintenance Manual
Note: For dampers installed in ducts or sleeves.
This Siemens actuator is a pneumatic actuator with a 11 square inch effective diaphragm area and a 4 inch 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 25 psi.
Tools Required:
Wrenches:
(1) ⁄ in., (2) ⁄ in., (1)
3 1
8 2
and (1)
Item No. Qty
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 8
⁄ in.,
7
16
⁄ in.
3
4
Description
External Plate
Lower Support Bracket
Side Bracket with Bearing
Upper Support Bracket
⁄ in. Rod
1
2
Actuator Siemens Cat 11
Crankarm
⁄ in.- 20 x ⁄ in. Bolt
1 1
4 2
Document Number 483438
UL Listed Pneumatic Actuator with Spring Return
Item No.
9
10
11
12
13
14
15
16
Siemens #6 Actuator
Model 331-2856 & 332-2856
Kit No. Actuator
914989 Pneumatic Actuator 331-2856
914990 Pneumatic Actuator 332-2856
Note the damper shaft rotation for fail direction
and orient the linkage appropriately. Position
the crankarm in one of the positions shown.
Attach the crankarm to the clevis on the
actuator with the clevis pin and the hitch pin
supplied through hole "A" shown.
Qty. Description
2
⁄ in. Dia. Hose Clamp
1
2
9 ⁄ in.- 20 x ⁄ in. Bolt
1 1
4 2
10 / in.-20 Spinlock Nut
1
4
1 ⁄ in.- 20 x ⁄ in. Press Stud
1 1
4 2
1 Standoff Bracket
1 Side Bracket without Bearing
1 1" Dia. Bearing
1 Crankarm Assembly