OSCO Model T Instructions
Page 4
11-14-97
Installation Instructions (Cont’d)
Step 3: Operator Installation (Cont’d)
Secure the operator to the ceiling or overhead truss,
ensuring stability and allowing the operator to rest above
the path of the door track.
Important:
During door travel, the operator must be
a minumum of one inch above the door
and be properly aligned.
Normally, angle iron of 1” X 1” X 1/8” size is ample for
hanging the operator, provided sufficient rigidity can be
obtained by diagonal bracing.
On doors over 10 feet high, it is necessary to support
the center (approximately) of the rail with a hanger
dropped from the ceiling. Holes are provided in the rail
for this purpose.
Finally, manually close the door fully and secure the
door bracket on the door centerline directly in line with
the door rollers. For wood doors, use two carriage bolts.
For metal or fiberglass doors, use two 5/16” bolts.
Step 4: Electrical Connection
A complete electrical circuit print is included with the
operator information packet. The power supply must be of
correct voltage and phase and should be brought into the
operator with no smaller than No. 12 wire. For proper wire
gauge, refer to “Wiring Specifications,” on Page 10.
Electrical power must be ample and not taken from an
overloaded line, as faulty operation will result. Proper
thermal protection is supplied with the operator. The motor
contains a thermal overload protector to guard against
overheating due to overload conditions.
IMPORTANT
A. Power supply must be of correct voltage and
phase.
B. Always disconnect power from the operator
before servicing.
C. Keep clear of the door during operation.
IMPORTANT NOTICE
This operator is supplied with a 3-button control station
(OPEN–CLOSE–STOP) accompanied by a precautionary
sign:
It is vital that the 3-button station be mounted within sight
but out of reach of the door and that the warning sign be
mounted adjacent to the 3-button station.
The 3-button station must be connected so the STOP
circuit between terminals #2 & #4 is not bypassed.
Also, if additional 3-button stations are to be con-
nected, the STOP buttons must be wired in series.
NOTE: A STOP button must be used when the instal-
lation has radio controls or a single button.
Desired Function
Connecting Terminals
OPENING DEVICE
#1 & #4
STOP
#2 & #4
CLOSE
#3 & #4
OPEN & CLOSE
#4 & #5
SAFETY TO REVERSE
#4 & #6
24VAC POWER
#2 & #10
020200
