Greenheck MS7505 and MS8105 Series (473389) - Manual (Page 2)

Copyright ©2010 Greenheck Fan Corporation
IOM - MS7505 MS8105 Rev 1 March 2010
Actuator Weight
3.5 lb (1.6 kg).
noise Rating
Driving Open: Maximum 50 dBA at 1m.
Holding: Maximum 20 dBA at 1m (no audible noise).
Temperature Ratings
Ambient: -40°F to 150°F (-40°C to 65°C)
Shipping and Storage: -40°F to 150°F (-40°C to 65°C)
Humidity Ratings
5% to 95% RH non-condensing.
Environmental Protection Ratings
NEMA 2
IP54
Actuator Timing (under load)
Drive Open: 45 or 90 seconds.
Spring Close: 25 seconds.
FATPA DIREcT DRIvE SERIES InSTRucTIonS
Power consumption
Model Volts Running Auxillary
Switch
MS8105A1130 24 8VA Yes
MS7505A2130 24 8VA Yes
MS7505A2030 24 8VA No
These installation instructions assume the damper is already
mounted in a duct or sleeve with the damper shaft extending
beyond the duct or sleeve 6 inches (152mm).
1. Install the stand-off bracket
Dampers with a jackshaft
1a. Jackshaft supplied is typically 1/2 in. (13 mm) diameter.
Mount the stand-off bracket (item 4) with [4] #14x 3/4 in.
(M6 x 19) TEK screws (item 8). Orient the stand-off
bracket (item 4) so the hole is centered on the jackshaft
(See Figure 1).
Dampers without a jackshaft (Shaft Extension)
1b. Mount the stand-off bracket (item 4) spanning across
the damper frame flanges. Fasten to the damper frame
with [4] #14x 3/4 in. (M6 x 19) TEKscrews (item 8). Be sure
not to run the screws into the damper linkage, which is
between the flanges.
2. Mount actuator bracket
Fasten the actuator bracket (item 5) (See Figure 1) to
the standoff bracket (item 4) using [4] 1/4-20 x 1/2 in. (M6 X
20mm) thread studs (item 6) and [4] 1/4-20 (M6) nuts (item
2). Use outer four holes of the actuator bracket (item #6).
3. Fail Position
If fail position is closed, make sure damper blades are
fully close and ensure blade seals are compressed prior to
tightening the actuator clamp to the damper extension pin
or jackshaft.
4. Install the actuator
Install the actuator (item 3) over the damper drive shaft
and tight against the actuator bracket (item 5). Install [1]
5/16 in. x 3/8 in. (8mm x 9.5mm) shoulder bolts (item 7)
through lugs on actuator and through the holes in back of
the actuator bracket (item 5). Secure with [2] 1/4-20 spinlock
nuts (Item 2) (See Figure 1).
5. Secure actuator (Item 3) to drive shaft by tightening the set
screws on actuator collar to 50-55 in. lbs. (5.6 - 6.2 Nm).
6. The wiring illustration identifies actuator electrical
requirements and connections. Wiring must comply with all
applicable electrical codes.
7. Apply power to the actuator. The damper blades should
fully open or close and return to the fail position when
power is disconnected.
IMPORTANT
For actuators with a product date code before 0527m
a power break of less than two seconds can cause the
actuator to spring-return 5 degrees or less and remain
in place until a power break of longer duration. For
actuators with a product date code of 0527 or after, a
power break of any duration will cause the actuator to
spring-return and be able to drive immediately when
power is reapplied.