Grifco Fire Shutter - Planning

5
PLANNING
Idenfy the type and dimensions of your commercial door. A survey of the applicaon is recommended to see if any of the
requirements below are not applicable with your installaon.
Based on “standard shuer”:
 The shuer is correctly spring balanced
 The shuer has ≤ 1.0mm x ≥ 100mm slats
 The shuer has no wind-locks
 A ≥4:1 sprocket rao is used
If any condions above are not met, some consideraon should be given to increasing the sprocket rao, or opener size. The
opener should be installed on the correct side of the commercial door. Consider an In-board mounng kit
(P.No IBMK) if there is insucient side room. Select the side that meets the requirements listed below.
 Must have minimum distance of 15mm between mounng plate and door drum sprocket
 Must have minimum distance of 200mm between limit housing and imposing structure
 Must have minimum clearance of 200mm from the terminal box
 Before installing the opener, check that the commercial door is in good mechanical condion, correctly balanced and open
& closes properly.
BOTTOM RAIL WEIGHT AND/OR REVERSE SPRINGING
To provide the shuer with a greater inial closing force, parcularly when fully open, the boom rail should be made heavier.
This can be achieved by aaching approximately 5kg of steel at bar to the upper side of the boom rail. An alternave or
addional method to ensure the shuer will descend when released is to slightly reverse spring the shuer at its fully open
posion. This will give the shuer a bias towards closing when it is in its fully open posion.
NOTE: The shuer must have radial ball or roller bearings on the shuer axle.
THE RELEASE ARM
The release arm may point in one of the six
direcons allowed by the six bolts on the
plate upon which it is mounted. This is to
allow the fusible linkage to be aached in
the arrangement most convenient to you.
To change the direcon of the arm, remove
the bolt that aaches the boom end of the
arm to the u-bracket. Tilt the arm about the
u-bracket that is connected to the output
sha this will allow access to the boom u-
bracket. The xed u-bracket may be
removed using a spanner on its outside.
Remove the bolt from the plate in the
posion that you wish to t the u-bracket,
screw the u-bracket into this hole. Fit the
spare bolt to the hole where the u-bracket
was. Ret the arm into the u-bracket using
the nut, bolt and washers that were
previously removed.
CAUTION
The roller shuer guides must be ed with mechanical stops that prevent the boom rail from passing through in the opening
direcon. The opener should stall if driving into the mechanical stops.