Chamberlain FOHMODDC Instruction Sheet

INSTALL THE FRONT OF HOOD MOUNT
ACCESSORY BRACKET KIT
1. Review illustrations in Figure 1. Choose A, B, or C based on your
application.
NOTE: Illustrations shown are for LEFT hand mounting. RIGHT hand
mounting is reversed.
2. Install four 3/8" x 1-1/4" screws and hardware shown on front of hood
bracket. Do not tighten.
3. Place drive sprocket on operator output shaft and driven sprocket on
door shaft. Do not insert keys or tighten set screws.
4. Remove Lock washer and nut, then mount operator to bracket. Lock
washer and nut will need to be placed on mounting screw on top of
operator bracket.
5. Hold operator in position on bracket and wrap #50 roller chain around
drive sprocket and driven sprocket to determine length of chain required.
NOTE: Observe location of mounting screws in slots of bracket. Leave
room in slots for chain tensioning. Readjust bracket if necessary and repeat
procedure before cutting chain.
NOTE: Make certain that operator shaft is above, below or in front of door
shaft, never in-line.
6. Remove operator from bracket and cut #50 chain to required length.
7. Permanently attach bracket to headplate in the location determined in
Step 5. Welding is recommended.
8. Attach operator to bracket using 3/8" x 1-1/4" mounting screws and
hardware. Do not tighten.
9. Insert key in driven sprocket and align driven sprocket with drive
sprocket. Tighten set screws. Do not place key in drive sprocket at this
time.
10. Wrap #50 chain around drive and driven sprocket and connect ends
using #50 master link.
11. Remove slack from chain by moving operator and mounting screws in
bracket slots. Tighten mounting screws.
NOTE: Keyway in operator output shaft may not be aligned with keyway in
drive sprocket. Complete electrical connections to operator (refer to manual)
then operate unit with wall control or 3 button station. Insert key in drive
sprocket and tighten set screws. Complete installation according to the
owner's manual.
Headplate
Door
Shaft
Front of Hood
ABOVE Door Shaft
A
Headplate
Door
Bracket
Shaft
(COMPATIBLE WITH JDC AND JHDC OPERATORS)
To reduce the risk of FIRE or INJURY to persons:
• ALL service and maintenance MUST be performed by an Authorized
Service Technician.
• Disconnect ALL electric and battery power BEFORE performing ANY
service or maintenance.
Bracket
Front of Hood
BELOW Door Shaft
B
1
FRONT OF HOOD MOUNT KIT
INSTRUCTION SHEET
WARNING
Headplate
Door
Shaft
Top of Hood
C
FOHMODDC
Bracket