Greenheck MA6-305-500 Installation Manual

1 in. Diameter Jackshaft Hardwar

Replaces Items 7, 8, 9, & 19.

*Remove Bearing, Item 18,

If Using 1 in. Jackshaft

ol Shaft

Dampe

Part #455410

Invensys MA6 series

UL Listed Electric Actuators with Two Position Control

INSTALLATION INSTRUCTIONS

These instructions apply to the external field installation of Invensys actuators on Greenheck model VCD Control Dampers when they are duct mounted or sleeved.

Invensys actuators rotate to their energized position when power is applied and spring return to their fail position when power is interrupted.

Tools Required:

Wrenches:

(1) 3/8 in., (2) 1/2 in., (1) 7/16 in., and (1) 9/16 in.

(1) Hammer

Part No. Qty. Description

1 1 Actuator 2 1 Mounting Bracket 3 1 Mounting Plate 4 4 1/4-20 x 1/2 in. Thread stud 5 3 1/4-20 x 11/4 in. HH Bolt 6 8 1/4-20 Spinlock Nut 7 3 1/2 in. Crankarm 8 3 5/16-18 x 11Ú2 in. Bolt 9 3 5/16-18 Spinlock Nut 10 1 1 in. Crankarm 11 1 3/8-16 x 21/2 in. Carriage Bolt

Part No. Qty. Description

12 1 3/8-16 Spinlock Nut 13 1 Linkage Adjustment Pin 14 2 1/4 in. E-ring 15 1 Drive Link 16 1 Anchor Bracket 17 4 1/4-20 x 1/4 in. Thread Cutting Screw 18 1 Press Fit Ball Bearing 19 1 1/4 x 1/2 in. Knurl Pin 20 8 #14 x 3/4 in. HWH Tek 21 2 #10 Tek Screw

Instructions

3 in.

in.

Dampers with a jackshaft

1. Mount the anchor bracket onto the jackshaft bracket with (4) 1/4-20 x 1/2 in. thread cutting screws (Item 17) as shown in Figure 1a.

2. Attach anchor bracket to sleeve with (2) #14 x 3/4 HWH Tek screws (Item 20). Position the Tek screws as far down the sleeve as possible.

3. Mount the mounting bracket to the anchor bracket using (6) #14 x 3/4 HWH Tek screws (Item 20).

Dampers without a jackshaft (Shaft Extension)

1. Mount the mounting bracket spanning across the damper frame flanges, positioned over the control shaft as shown in Figure 1b. The damper shaft must be centered in the mounting bracket. Fasten to the damper frame with (4) #14 x 3/4 HWH Tek screws (Item 20) or equal, supplied by others. Be sure not to run the screws into the damper linkage, which is between the flanges.

Figure 1a - Orientation of

Stand Off Bracket for a

jackshaft driven damper

Figure 1b - Orientation of

Mounting Bracket for a

directly driven damper

2. Fasten the mounting plate (Item 3) to the mounting bracket (Item 2) using (4) 1/4 in. - 20 x 1/2 in. thread studs (Item 4) and (4) 1/4 in. -20 spinlock nuts (Item 6) through the matching four hole pattern on the mounting bracket labeled A on the illustration.

3. If the damper has a 1/2 in. diameter damper shaft, mount the ball bearing into the mounting bracket with two #10 Tek screws (Item 20). The Tek screws are required to keep the thrust forces from pushing the bearing out of the mounting bracket. If the damper shaft is 1 in. diameter, then no ball bearing is required.

4. Mount the actuator to the mounting plate in the corresponding holes using (3)1/4 - 20 x 3/4 in. thread cutting screws (Item 5). Note: the actuator must be mounted with the shaft in the horizontal position.

5. Assemble the linkage.

Parts needed for dampers with 1/2 in. shafts:

(Qty. 3) 1/2 in. crankarms (item 7) (Qty. 3) 5/16 in. - 18 x 1 1/2 in. bolts (item 8) (Qty. 3) 5/16 in. - 18 spinlock nuts (item 9) (Qty. 1) 1/4 in. x 1/2 in. knurl pin (item 19) (Qty. 1) Drive link (item 15) (Qty. 1) Linkage adjustment pin (item 13) (Qty. 2) 1/4 in. E-ring (item 14) (Qty. 1) 1/4 - 20 spinlock nuts (item 6)

Parts needed for dampers with 1 in. shafts:

(Qty. 1) 1 in. crankarm (item 10) (Qty. 1) 3/8 in. - 16 x 2 1/2 in. bolt (item 11) (Qty. 1) 3/8 in. - 16 spinlock nut (item 12) (Qty. 2) Linkage adjustment pin (item 13) (Qty. 1) 1/2 in. crankarms (item 7) (Qty. 1) 5/16 in. - 18 x 1 1/2 in. bolts (item 8) (Qty. 1) 5/16 in. - 18 spinlock nuts (item 9) (Qty. 1) Drive link (item 15) (Qty. 2) 1/4 in. E-ring (item 14) (Qty. 2) 1/4- 20 spinlock nuts (item 6)

Steps 6a,b for dampers with

Ú2 in. shafts.

Damper

Mounting Plate

Steps 6a,b for dampers with 1 in. shafts (substitute these parts in place of 7,8,9 &19)

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