Part Number 473694
!
Belimo AMB, FSLF, LMB, NMB and TF Actuators
Mounted Internally
Installation Instructions
These instructions apply to the internal field replacement of the Belimo Series actuators on Greenheck VCD
control damper models.
Item Part No. Description Qty
1 723981 Internal actuator bracket 1
2 839475 Drive link assy 1
3 829206 1/2 in. Crankarm assy 1
4 451588 1/4 in. E-ring 1
5 593831 1/2 in. Jackshaft, 6 1/2 in. long 1
6 415385 10-32 KEPS nut 1
7 846551 1/2 in. Small anti-rotation bracket assy 1
8 416122 Threaded mounting stud 1
9 415264 1/4-20 x 1/2 TCS 2
10 - Actuator 1
11 370159 1/2 in. Snap in bearing 1
12 416179 1/2 in. Retaining ring 1
WARNING
!
Equipment Damage or Electrical
Power Hazard. Line voltage can cause
death or serious injury and short
equipment circuitry. Disconnect power
supply before installation.
CAUTION
!
Device Malfunction Hazard. Improper
set screw tightening causes device
malfunction. Tighten set screws with
proper torque to prevent damper
shaft slippage.
Blade Axle Bracket
Damper Blade
1.563 in.
(39mm)
1.75 in. (44mm)
Blade Lever Hole
Location
.203 in. (5.2mm) Diameter.
(2)
Detail A
Instructions Belimo AMB, FSLF, LMB, NMB and TF Series
These installation instructions assume a damper is
already mounted in a duct or sleeve. Have damper
blades in the fail position.
1. Drill (2) .203 inch holes in the third blade from
bottom, at location shown in Detail A.
2. Attach blade drive lever to blades using (2) 1/4 in.
20 x 1/2 in. thread cutting screws, self drilling
screws or 1/4 in. - 20 x 1 1/4 in. bolts.
3. Fasten internal actuator bracket (item 1) to the
left jamb of damper frame using (2) thread cutting
screws and (2) 1/4 in. - thread studs with bolts
through existing holes in jamb. Snap bearing (item
11) into the internal actuator bracket (item 1).
4. Snap bearing (item 11) into the anti-rotation
bracket (item 7) and attach to the internal mount
bracket (item 1) using [2] thread cutting screws
(item 9).
5. Slide 1/2 in. diameter rod (item 5) slightly through
the anti rotation bracket (item 7). Install crankarm
(item 3) and drive link (item 2) onto the 1/2 in.
diameter rod and (item 5) and install retaining
ring (item 12) to lock drive link onto the internal
actuator bracket (item 1).
6. Install threaded mounted stud (item 8) to the anti
rotation bracket (item 7) using #10-32 Keps nut
(item 6).
7. Attach actuator (item 10) to the anti-rotation
bracket assembly (item 7). Tighten actuator onto
shaft.
8. Connect drive link to blade drive lever using
e-clip. With blades closed and the actuator in
its fail position, position the blades in their fail
position and tighten the crankarm to the 1/2 in.
shaft.
9. Connect all electrical leads to the actuator. Apply
power to the actuator. The damper blades should
power position and return to the fail position
when power is disconnected.
Model Volts Running Holding
AMB24-3 24
AMB24-SR 24
FSLF24 24
FSLF24-S 24
FSLF120 120
FSLF120-S 120
FSLF230 230
FSLF230-S 230
LF24-SR 24
LF24-SR-S 24
LMB24-3 24
LMB24-SR 24
NMB24 24 2W 2W
NMB24-SR 24 2.5W 2.5W
TF24 24
TF24-S 24
TF120 120
TF120-S 120
TF24-SR 24
TF24-SR-S 24
2.5W 2.5W
5VA 3.5VA
18VA 6.5VA
17VA 6VA
2.5W 1W
1.5W 1.5WLMB24-3-S 24
2W 1.3W
2.5W 1.3W
2W 1W
Copyright © 2010 Greenheck Fan Corporation
473694 Internal Small Belimo Series rev 2 Nov 2010
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