4.3
1) Determine operator mounting location, including desired
hoist and release location and release cable routing.
2) Weld the Rolling Door weld plate assembly to the door
headplate, a minimum of two 1” weld beads are required on
each side of the weld plate for proper attachment. See
Fig. 4
for proper placement.
3) Attach operator to main mounting bracket using the four
3/8”-16 X 1-1/2” bolts, hex nuts, and lock washers. (For 3HP
use 1/2”-13 x 2 1/2” bolts)
Rolling Steel - Bench Mount
4) Mount the operator to the weld plate using the 7/16”-18 hex
nuts. Hand tighten bracket to weld plate nuts.
5) Attach 12 tooth sprocket to operator output shaft.
6) Align keyways and insert key into sprocket and output shaft
keyways. DO NOT tighten set screw yet.
7) Attach door sprocket to door shaft. Align keyway and insert key.
DO NOT tighten set screw yet.
8) Assemble chain using master link.
9) With mounting bolts/nuts loosened, shift the position of the
operator in order to remove slack from the chain.
10) While applying tension, fully tighten mounting bolts/nuts.
11) Tighten sprocket set screws.
12) Proceed to page 4.7
Figure 4
BENCH MOUNTING
1/4”
WELD TO
HEADPLATE
8”
MIN.
Bench Mount Bracket
P/N 111791.0001
Section 4: Installation - Hoist
HP
REQUIRED MOUNTING KIT
PART NUMBER
1/2, 1 ROLLING STEEL - BENCH MOUNT
OPMKRSBMHX.S
3
ROLLING STEEL - BENCH MOUNT
OPMKRSBMHX3HP.S
The RHX® Rolling Steel Operators are factory assembled for right-
hand mounting (shown). Each model can also be converted to
left-hand mount See page 4.7 for instructions.
* This style of installation may require 90 deg. elbow
fitting or reversal of limit switch assembly. See page 4.18
*
