Power Master T Installation instructions

READ THIS MANUAL CAREFULLY
BEFORE INSTALLATION OR USE.
SAVE THESE INSTRUCTIONS.
Serial #:
Date Installed:
Your Dealer:
As of date of manufacture,
meets all ANSI/UL 325
Safety Requirements for
Vehicular door operators.
INSTALLATION AND OWNER’S MANUAL
MODEL T
Trolley Door Operator
UL 325 and UL 991 Listed

Table of Contents
Model T Drawbar Operator
Product Features....................................................................................................3
Preparation.............................................................................................................4
Component Identication........................................................................................5
Important Installation Notes (Things to do Before & During Installation)................6
Installation Instructions................................................................................. 7-14
Rail/Track Assembly .......................................................................................7
Operator Assembly..................................................................................... 8-9
Mounting the Operator ........................................................................... 10-13
Setting the Limit Switches ............................................................................14
Electrical Wiring Instructions ................................................................................15
Accepted Safety Equipment .................................................................................16
Important Safety Notes for Owner........................................................................17
Operation and Adjustment Instructions..................................................... 18-19
Clutch Adjustment ........................................................................................18
Testing ..........................................................................................................19
Maintenance.........................................................................................................20
Trouble Shooting Chart ........................................................................................21
Warranty ...............................................................................................................23
CAUTION
READ THESE STATEMENTS CAREFULLY AND FOLLOW THE
INSTRUCTIONS CLOSELY
The Warning and Caution boxes throughout this manual are there to protect you and your
equipment. Pay close attention to these boxes as you follow the manual.
Indicates a MECHANICAL
hazard of injury or death.
Gives instructions to avoid
the hazard.
Indicates a MECHANICAL
hazard of damage to your
operator or equipment. Gives
instructions to avoid the hazard.
Indicates an ELECTRICAL
hazard of injury or death.
Gives instructions to avoid
the hazard.
Indicates an ELECTRICAL
hazard of damage to your
operator or equipment. Gives
instructions to avoid the hazard.
CAUTION
WARNING
WARNING

3
The purpose of this booklet is to provide assembly, installation, and operation information
concerning PowerMaster Model T Drawbar Commercial Vehicular Garage Door Operators and
related Accessory Products.
NOTE: IT IS IMPORTANT THAT THIS INSTRUCTION MANUAL BE READ AND
UNDERSTOOD COMPLETELY BEFORE INSTALLATION OR OPERATION IS ATTEMPTED.
IT IS INTENDED THAT THE INSTALLATION OF THIS UNIT WILL BE DONE ONLY BY
PERSONS TRAINED AND QUALIFIED IN THE INSTALLATION, ADJUSTMENT, AND
SERVICE OF COMMERCIAL OVERHEAD DOORS AND DOOR OPERATORS, AND BY
QUALIFIED ELECTRICIANS.
The important safeguards and instructions in this manual cannot cover all possible
conditions and situations which may occur during its use. It must be understood that
common sense and caution be exercised by the person(s) installing, maintaining, and
operating the equipment described herein.
Do not use this equipment for any purpose other than its intended use: the operation of an
overhead commercial vehicular garage door.
STANDARD FEATURES
Limit Switches: Rotary limit switches, easily adjusted over a wide range. The motor may be
removed without aecting the limit switch adjustments.
Manual Release: Permits manual operation of the door in the event of a power failure. The
Model T operator is equipped with a door arm disconnect to aid in manual operation. Use of
this feature will not aect the limit switch adjustment.
Control circuit: Standard 3-button open, close, and stop. 24 Volts AC.
Connections for Auxiliary Entrapment Protection Devices: Use with reversing door edge
components or a photo-electric beam device across the opening.
Constant pressure to close: Standard operation.
MODEL T OPERATOR APPLICATIONS
Drawbar operators are intended for commercial and industrial use on sectional overhead
doors which use horizontal track with normal radius. A drawbar operator is not suitable for
doors with high lift or vertical lift doors. The installation requires a minimum clearance of 8
inches above the highest point of the door at any point in its travel. Please refer to Figure 10
for back room requirements.
A drawbar operator - when properly installed - will eectively lock the door in the closed
position.
PRODUCT FEATURES

4
Before starting the installation of the
operator, the door must be in good
working condition, properly operating,
and be properly counterbalanced. Inspect
the door and track for loose or missing
hardware. Test the door manually for
balance and ease of operation. Lubricate
door hinges and rollers. If necessary,
employ a qualied technician to adjust
the springs for proper counterbalance of
the door.
Before removing the operator powerhead
from the shipping carton, inspect the
nameplate on the cover of the operator
control box to verify that it is the correct
model for the intended application,
and that the voltage and phase are
in accordance with electrical power
provided at the job site. The rails are
shipped separately from the powerhead.
Model T Drawbar operators are used in the following applications:
• Continuous Duty, Indoor Commercial installations only
• Up to 22 foot high doors with a maximum area of 480 square feet for 3/4HP, 360 square
feet for 1/2HP, and 270 square feet for 1/3HP. Maximum area slightly higher for lighter
doors - consult factory.
• Use with reversing door edge or photoelectric device - REQUIRED where the 3-button
station is out of sight of the door, or any other automatic, remote, or manual control is
used to activate the door.
OPTIONAL FEATURES:
Digital Radio Controls: Open, Close and Stop operation. Radio units are available to control
up to 27 doors from one transmitter.
Keyless Entry System: Connection terminals provided for hard wired or wireless keyless
entry systems.
ELECTRIC DOOR OPERATORS ARE DESIGNED FOR DOORS IN
GOOD WORKING CONDITION: PROPERLY OPERATING, PROPERLY
COUNTERBALANCED, AND PROPERLY ADJUSTED IN ACCORDANCE
WITH THE DOOR MANUFACTURER’S INSTALLATION INSTRUCTIONS.
WARNING
PREPARATION
SPRINGS ARE SUBJECT TO VERY HIGH
FORCES AT ALL TIMES. ADJUSTMENTS
ARE TO BE MADE BY A QUALIFIED
PROFESSIONAL DOOR INSTALLER ONLY.
WARNING
ROPE OFF THE AREA TO KEEP
PERSONNEL AND VEHICLES CLEAR OF
THE DOOR AND FLOOR SPACE IN THE
VICINITY OF THE OPERATOR DURING
THE INSTALLATION.
WARNING
REMOVE OR DISABLE ANY LOCKING
DEVICES FROM DOOR. REMOVE
ALL ROPES.
WARNING
COMPONENT IDENTIFICATION LISTING
Item# Description Quantity
1 Track Rails 2
2Front Track Bracket 1
3 Idler Roller Assembly 1
4 Track Spreader Bars 2
5 Upper Half of Trolley Assembly 1
6 Lower Half of Trolley Assembly 1
7Chain Take-Up Bolt 1
8 Operator Power Head 1
9 Drive Chain 1
10 Chain Connecting Link 1
11 Curved Door Arm 1
12 Straight Arm w/Disconnect 1
13 Door Bracket 1
14 Hardware Package 1
15 3 Button Station 1

5
UPPER HALF
TROLLEY ASSEMBLY
LOWER HALF
TROLLEY ASSEMBLY
IDLER ROLLER
ASSEMBLY
OPERATOR
POWER HEAD
SPREADER
BARS
TRACK RAILS
DOOR
CONNECTING
ARMS
FRONT TRACK
BRACKET
HARDWARE
PACKAGE
STRAIGHT
ARM WITH
DISCONNECT
THREE
BUTTON
STATION
CHAIN
CONNECTING
LINK
CHAIN
TAKE-UP BOLT
CHAIN
5
6
7
2
1
8
10
DOOR
BRACKET
13
12
11
15
14
9
4
3
FIGURE 1
COMPONENT IDENTIFICATION
COMPONENT IDENTIFICATION LISTING
Item# Description Quantity
1 Track Rails 2
2Front Track Bracket 1
3 Idler Roller Assembly 1
4 Track Spreader Bars 2
5 Upper Half of Trolley Assembly 1
6 Lower Half of Trolley Assembly 1
7Chain Take-Up Bolt 1
8 Operator Power Head 1
9 Drive Chain 1
10 Chain Connecting Link 1
11 Curved Door Arm 1
12 Straight Arm w/Disconnect 1
13 Door Bracket 1
14 Hardware Package 1
15 3 Button Station 1

6
• Install only on a properly balanced garage door. An improperly balanced door could
cause severe injury. Have a qualied service person make repairs to cables, spring
assemblies, and other hardware before installing the opener.
• Remove all ropes, and remove or make inoperative all locks that are connected
to the garage door before installing the opener (unless mechanically and/or
electrically interlocked to the power unit).
• Lightweight doors (berglass, aluminum etc.) must be reinforced to avoid door
damage. Check the door manufacturer’s instruction manual for a bracing procedure
or the availability of a Reinforcement Kit.
• PowerMaster Model T Drawbar operators are Commercial Vehicular Door Operators,
and as such, are NOT recommended for pedestrian trac. In installations where it
is known that the pedestrians will be nearby, ensure a pedestrian door is available
for entrance and exit to the building. In addition, YOU MUST install an auxiliary
entrapment protection device (reversing door edge or photoelectric beam device)
as part of the compete operator system.
• Connect an auxiliary entrapment protection device (reversing edge or photoelectric
device across the door opening). A device of this type is STRONGLY ADVISED FOR
ALL commercial operator installations. An auxiliary entrapment protection device
is REQUIRED when the three button control station is out of sight of the door or any
other automatic or manual control is used.
• Install the opener AT LEAST 8 feet or more above the oor.
• Do not connect the opener to the source of power until instructed to do so.
• Locate the control station:
a. Within sight of the door;
b. At a minimum height of 5 feet above the oor so small children cannot reach it;
and
c. Away from the door, so the user is prevented from coming in contact with the
door while operating the controls.
• Do not overtighten the clutch adjustment to compensate for a poorly working door.
• Securely attach any WARNING signs or placards to either the door or above the
control station as directed.
• After installing the opener, all safety features must be tested for proper operation.
(See TESTING section)
IMPORTANT INSTALLATION NOTES
TO REDUCE THE RISK OF SEVERE INJURY OR DEATH, READ
& FOLLOW ALL INSTALLATION INSTRUCTIONS!
WARNING

7
TRACK ASSEMBLY
Before starting assembly of the operator track, check for proper length. The tracks supplied
may be longer than required for the door height. The tracks should be 3-1/2 feet longer than
the door height. If tracks supplied are longer than the door height plus 3-1/2 feet, it will be
necessary to trim the rails in 2-foot increments from the power head mounting end.
CAUTION: WHEN NECESSARY TO CUT TRACK, ENSURE THE ENDS ARE LINED UP AS
SHOWN IN FIGURE 2.
1. Lay Track Angles [#1] on work surface as shown in Figure 2.
2. Install Front Track Bracket [#2] and Front Idler Roller Assembly [#3] to one end of track
using 3/8 x 3/4 long hex head bolts and 3/8 lock washers, as shown in Figure 2.
3. Install two track spreader bars [#4], evenly spaced over length of track using 3/8 x 3/4
long hex head bolts and 3/8 lock washers, as shown in Figure 2.
TROLLEY ASSEMBLY
1. Assemble Upper Half of Trolley [#5] to Lower Half of Trolley [#6] using two 5/16 x 1-1/4
carriage bolts, two 5/16 Lock Washers and two 5/16 Hex Nuts as shown in Figure 3.
2. Install 3/8 Chain Take-up Bolt [#7] into Trolley Assembly using one 3/8 Lock Washer and
two 3/8 Hex Nuts as shown in Figure 3. DO NOT TIGHTEN NUTS!
3. Install 3/8 x 2” Long Hex Head Bolt through ears on Lower Half of Trolley [#6] and secure in
position with 3/8 Lock Washer and 3/8 Hex Nut.
TRACK ANGLE
[#1]
3/8” X 3/4”
LG. HEX HEAD
BOLT
3/8” X 3/4”
LG. HEX HEAD
BOLT
3/8”
LOCK WASHER 3/8”
LOCK WASHER
TRACK ANGLE
[#1]
TRACK
SPREADER BAR
[#4]
TRACK
SPREADER BAR
[#4] IDLER ROLLER
ASSEMBLY
[#3]
FRONT TRACK
BRACKET
[#2]
FIGURE 2
WARNING
SPRINGS, PULLEYS, CABLES AND MOUNTING HARDWARE
USED TO BALANCE YOUR GARAGE DOOR ARE UNDER EXTREME
TENSION AT ALL TIMES AND CAN CAUSE SEVERE INJURY OR
DEATH IF DISTURBED. DO NOT ATTEMPT ADJUSTMENT.
INSTALLATION INSTRUCTIONS

8
FIGURE 3
5/16 X 1-1/4” LG.
CARRIAGE BOLTS
#5 UPPER HALF
OF TROLLEY
3/8 X 2” LG.
HEX HEAD BOLT
5/16”
LOCK WASHER
3/8”
LOCK WASHER
3/8”
LOCK WASHER
3/8”
HEX NUT
3/8”
HEX NUT
3/8”
HEX NUT
#7
#6
LOWER HALF
OF TROLLEY
5/16”
HEX NUT
OPERATOR ASSEMBLY
1. Install Trolley Slide Assembly on Track Assembly with Chain Take-up Bolt [#7] pointing
towards end of track where Power Head [#8] will be mounted as shown in Figure 4.
2. Mount Power Head to Track Assembly using four 3/8 x 3/4 Long Hex Head Bolts, four 3/8 Lock
Washers and four 3/8 Hex Nuts, as shown in Figure 4.
3. Turn operator assembly over and back o Chain Adjustment Nut to the end of the threads
on Chain Take-up Bolt [#7]. See Figure 5.
4. Lay out Drive Chain [#9] next to operator assembly work surface.
5. Thread one end of the Operator Drive Chain around Operator Drive Sprocket and connect to
the Chain Take-up Bolt [#7] on Trolley Assembly with a Chain Connecting Link. See Figure 5
and Figure 6.
6. Thread the other end of the Drive Chain [#9] around the Idler Roller Assembly [#3]. See
Figure 6.
7. Pull Drive Chain [#9] tight up to Trolley Traveler Assembly. Mark the link that lines up with
Drive Tab on Traveler Assembly and cut Drive Chain to length.
8. Attach cut end of Drive Chain [#9] to Drive Tab on Trolley Traveler Assembly with a Chain
Connecting Link. See Figure 5.
9. Adjust chain tension using Chain Adjusting Nut to remove excess slack. See Figure 5.
10. Lock in adjustment using Lock Washer and Lock Nut on Chain Take-up Bolt. See Figure 5.

9
Unit is shown in the inverted position to facilitate assembly of trolley track and
traveler. When properly installed, the power head and trolley assembly should
face the oor. Note: Install drive chain so trolley assembly is located near front
idler as shown.
TRACK ASSEMBLY
TROLLY SLIDE
ASSEMBLY
(4) 3/8 X 3/4” LG.
HEX HEAD BOLTS
(4) 3/8” LOCK
WASHERS
(4) 3/8”
HEX NUTS
#7
#8
POWER HEAD
#9
DRIVE CHAIN
#9
#7
CHAIN
CONNECTING LINK
#10
CHAIN
CONNECTING LINK
DRIVE TAB
TROLLEY
ASSEMBLY
CHAIN
ADJUSTING
NUT
LOCK NUT
LOCK WASHER
DRIVE SPROCKET
#9
DRIVE CHAIN
#3
IDLER ROLLER ASSEMBLY
TROLLEY ASSEMBLY
FIGURE 4
FIGURE 5
FIGURE 6

10
1. Locate the center of the door and mark a line on the wall directly above the door. Extend
this line approximately 20” up the wall (See Figure 7).
2. Slowly raise the garage door and observe the action of the top section. When the top
section reaches the highest point (high arc), use a level and project a line from this point
to the center of the door (See Figure 8).
3. Using the projected lines for location, mount a suitable wood block or angle iron –
depending on the structure of the building – to the wall above the door opening as shown
in Figure 7. Ensure the block or angle iron used will provide a sound and secure mounting
pad for the operator track front mounting bracket (See Warning below). Drill the required
holes for mounting the operator track front mounting bracket as shown in Figure 9.
TO AVOID DAMAGE TO THE DOOR AND OPERATOR, ENSURE
ALL LOCKS ARE DISABLED. USE AN INTERLOCK SWITCH IF A
LOCK IS REQUIRED TO RETAIN FUNCTIONALITY.
WARNING
CENTER OF DOOR
PROJECTED LINE
LEVEL
DOOR RAISED
TO HIGH ARC
CENTER OF DOOR OPENING
FIGURE 8
FIGURE 7
MOUNTING THE OPERATOR

11
4. Raise operator and Track Assembly
into mounting position, as shown
in Figure 10. Temporarily support
by suspending from ceiling
with suitable ropes or chains, or
supporting from oor to operator.
5. Secure track Front Bracket to pre-
drilled wood or angle iron mounting
pad as shown in Figure 10. Ensure
that Operator Track Assembly is level,
and secure Power Head to ceiling
structure as shown.
Note: Figure 10 depicts a typical
method of hanging the power head
of the operator from the ceiling.
Each installation will vary due to the
dierence in building structures.
Side braces should always be used to
further support the Power Head.
6. Fully close the door and move the
trolley to within 2 inches of the Front
Idler Roller. Using Figure 11 as a
guide, connect the release arm (Item
#12) to the trolley. Connect the Door
Curved Arm (#11) to the door release
arm with two 3/8 x 1-1/4” bolts, lock
washers and nuts.
7. Refer to Figure 12. Attach the Door
Bracket (#13) to the curved arm using
a 3/8 x 1-1/4” bolt and two 3/8 hex
nuts. Install the nuts until snug and
then back o, leaving 1/16” clearance
to allow the arm to pivot on the
bolt freely. Secure adjustment by
locking nuts against each other.
Position the Door Bracket to the
scribed center line on the door.
Attach to door with two 5/16 x
2-1/2 long carriage bolts, lock
washers and nuts.
C
L
PROJECTED
LINE
ANGLE IRON MOUNTING PAD
13/32” DIA. HOLES
FOR 3/8” DIA. HEX
HEAD BOLTS
4-1/2” MIN.
1-3/4” 1-3/4”
C
L
PROJECTED
LINE
ANGLE IRON MOUNTING PAD
13/32” DIA. HOLES
FOR 3/8” DIA. HEX
HEAD BOLTS
4-1/2” MIN.
1-3/4” 1-3/4”
FIGURE 9
BEFORE PROCEEDING,
RE-CHECK ALL BOLTS,
NUTS AND LAG
SCREWS AND ENSURE
THEY ARE TIGHT!
THE FRONT MOUNTING SURFACE MUST
BE SOUND AND SECURE. IF NECESSARY,
PROVIDE REINFORCEMENT IN THIS AREA
BEFORE MOUNTING THE OPERATOR RAIL
FRONT MOUNTING BRACKET.
WARNING
TO AVOID DAMAGE TO THE DOOR TOP
SECTION, REINFORCE THE CENTER
STILE WITH A VERTICAL BRACE.
ADDITIONAL BRACING REINFORCEMENT
MAY BE REQUIRED WHEN THE DOOR
IS CONTROLLED BY AN AUTOMATIC
DOOR OPERATOR. CONSULT THE DOOR
MANUFACTURER FOR INSTRUCTIONS.
CAUTION

12
ANGLE IRON
MOUNTING PAD
WOOD BLOCK
MOUNTING PAD
CENTER LINE
OF DOOR
3/8” HEX HEAD BOLTS
(BY OTHERS) 3/8” LAG BOLTS
(BY OTHERS)
OVERALL LENGTH = DOOR HEIGHT PLUS 4’9”
LEVEL
3-1/2” MIN.
ANGLE IRON SUPPORTS
(BY OTHERS)
SIDE BRACE
(2) PIECES.
(BY OTHERS)
CENTER
LINE OF
DOOR
FIGURE 10

13
3/8” LOCKWASHERS
AND NUTS
3/8” X 1-1/4” LG.
HEX HEAD BOLTS
.
DOOR
CENTER LINE
DOOR ARM ASSY.
3/8” NUTS
(BY OTHERS)
3/8” X 1-1/4” LG.
HEX HEAD BOLT
FIGURE 11
FIGURE 12

14
SETTING THE LIMIT SWITCHES
1. Remove the cover on the electrical enclosure. There are two limit nuts on the threaded
limit shaft that move laterally along the shaft as the operator opens and closes the door.
When a limit nut nears the end of the shaft, it activates a (set of) switch(es). The Open
Limit Switch is on the LEFT, and the Close Limit Switch is on the RIGHT. Auxiliary switches
may also be present to control other function (They are mounted to a separate bracket
and should not be confused with the Open and Close limit switches, which are mounted
on the back of the electrical enclosure box and are somewhat hidden from view).
2. Manually set the door to a nearly closed position.
3. Refer to Figure 8. Depress the Limit Nut Retaining Bracket away from the slots in the limit
nuts. Turn the Close Limit Nut on the shaft until it engages the Close Limit Switch. The
switch will sound an audible “click” when engaged. If there are auxiliary switches present,
the limit switch will be the second“click.” Release the Retaining Bracket and be sure that it
engages in slots of both limit nuts.
4. Manually raise the door to a Nearly Open position, and repeat Step #3 with the Open Limit
Nut and Switch.
5. If auxiliary switches are present, the limit nut will actuate them just prior to activating the
Open or Close Limit Switch (This is pre-set at the factory).
6. Manually move the door
to a half-open position
to avoid door damage
due to incorrect power
supply phasing. On three-
phase units, the door may
initially run in the wrong
direction when power
is rst applied. With the
door in mid-position,
there will be time to stop
the door before damage
can happen if incorrect
phasing occurs.
7. A nal limit adjustment
will be necessary after
the connection of the
power supply in order to
ensure the door stops in
the proper Open and Close
positions.
TO AVOID RISK OF ENTRAPMENT AND POSSIBLE DAMAGE
TO THE DOOR AND OPERATOR, THE LIMITS MUST BE
ADJUSTED BEFORE APPLYING POWER TO THE OPERATOR.
WARNING
FIGURE 13
OPEN
LIMIT NUT
CLOSE
LIMIT NUT
LIMIT
SHAFT
LIMIT NUT
RETAINER PLATE
OPEN
LIMIT SWITCH
CLOSE
LIMIT SWITCH

15
NOTE: PowerMaster T Drawbar operators have
been designed and constructed for use with
voltages from 115 Volts AC to 575 Volts AC,
in single or three phase. Check the operator
nameplate label on the control box cover for
the proper voltage and phase. The application
of an improper input voltage or phase will
result in catastrophic failure to the internal
electrical components. Observe local electrical
codes when wiring the operator.
When hard wiring, observe state and local
electrical codes. A wiring diagram is attached
to the inside of the control box cover. Connect
the appropriate voltage and phase power
leads to the appropriate terminals as per
the wiring diagram and connect a ground
wire to the grounding screw. On three phase
units, incorrect phasing of the power supply
will cause the motor to rotate in the wrong
direction (Open when Close button is pushed
and vice versa). To correct this, interchange any
two of the incoming three phase conductors.
The wiring diagram attached inside the cover
of the control box details all of the eld wiring
terminal connections for the operator. Always
connect the wires to the push button controls
and auxiliary devices exactly as shown.
Warning: Control voltage of the operator is 24 Volts AC, Class 2. Do not run the power
leads and control circuit wiring in the same electrical conduit.
NOTE: All T operators are pre-wired to accept reversing edge components. To comply with
UL requirements, one of these systems must be installed and wired to the operator. Refer to
Figures 9 and 10 for Edge Component Wiring and Installation.
For operator models not installed with
reversing edge components or photoelectric
device, ONLY ONE THREE BUTTON STATION
OR A CONTROL WIRED FOR CONSTANT
PRESSURE TO CLOSE MAY BE USED TO
CONTROL THE OPERATOR. THIS IS TO
COMPLY WITH UL SAFETY REQUIREMENTS.
IN THIS CASE, THE CONTROL STATION MUST
BE LOCATED WITHIN CLEAR SIGHT OF
THE DOOR ADJACENT TO THE CONTROL
STATION, THE WARNING PLACARD
INCLUDED WITH THE OPERATOR MUST BE
INSTALLED (Figure 14)
ELECTRICAL WIRING INSTRUCTIONS
TO PREVENT THE RISK OF PERSONAL
INJURY AND/OR DAMAGE TO DOOR
OR PROPERTY, ONLY OPERATE DOOR
CONTROL WHEN DOOR IS IN CLEAR
VIEW. IF CONTROL STATION CANNOT BE
LOCATED WHERE THE DOOR IS VISIBLE,
OR IF ANY OTHER DEVICE IS USED TO
CONTROL THE DOOR, AN AUXILIARY
ENTRAPMENT DEVICE MUST BE
CONNECTED TO THE UNIT.
WARNING
TO PREVENT THE RISK OF PERSONAL
INJURY OR DEATH:
• DISCONNECT POWER AT THE FUSE
BOX BEFORE PROCEEDING
• ELECTRICAL CONNECTIONS
MUST BE MADE BY A QUALIFIED
INDIVIDUAL
• OBSERVE LOCAL ELECTRICAL CODES
WHEN WIRING THE OPERATOR
WARNING
WARNING: TO PREVENT
ENTRAPMENT, DO
NOT START DOOR
DOWNWARD TRAVEL
UNLESS DOORWAY IS
CLEAR
FIGURE 14

16
ACCEPTED SAFETY EQUIPMENT
• Photoelectric safety sensors
manufactured by Linear Corp.
• Door Edge Sensor and Interface Module
manufactured by Miller Edge model
series designated ME, MT, MU and
CPT223 with sux T2 provided with
interface module model Signature Module model SM-102.
• Optical Door Edge Sensor and Photo Eye manufactured by Fraba Inc. models
OPTOEDGE, OPTOEYE; Part Nos. OSE-T, OSE-R, OSE-P, OPE.
SEE MANUFACTURER’S INSTRUCTIONS FOR INSTALLATION OF THIS SAFETY EQUIPMENT.
TO AVOID DAMAGE TO DOOR AND
OPERATOR, ENSURE ALL DOOR LOCKS
ARE DISABLED. USE AN INTERLOCK
SWITCH IF A LOCK IS REQUIRED TO
RETAIN FUNCTIONALITY.
CAUTION
RISK OF ENTRAPMENT THAT MAY RESULT IN SERIOUS PERSONAL INJURY
OR DEATH. DISCONNECT POWER TO THE OPENER BEFORE AND DURING
INSTALLATION OF AN ACCESSORY, REVERSING DOOR EDGE OR PHOTOELECTRIC
DEVICE. DO NOT RECONNECT POWER TO OPENER UNTIL INSTRUCTED TO DO SO.
ENSURE DOORWAY IS CLEAR BEFORE STARTING TESTING OF UNIT.
WARNING

17
• NEVER let children operate or play with door controls. Keep remote control away from
children.
• ALWAYS keep a moving door in sight and keep people and objects away from the
door area until the door is completely closed. NO ONE SHOULD CROSS THE PATH OF A
MOVING DOOR.
• TEST THE DOOR OPENER’S REVERSING FEATURE MONTHLY (where applicable). The door
MUST reverse upon contact with a 4” high object on the oor.
• After adjusting the force setting, ALWAYS RETEST THE OPENER. Failure to adjust the
opener properly may result in serious injury or death.
• DO NOT over adjust the force setting (clutch) to compensate for a poorly working
door.
• KEEP THE GARAGE DOOR PROPERLY BALANCED (See the door owner’s manual).
• AN IMPROPERLY BALANCED DOOR MAY CAUSE SEVERE INJURY OR DEATH.
• Have a QUALIFIED SERVICE PERSON make repairs to cables, spring assemblies and
other hardware.
• SAVE THIS INSTRUCTION MANUAL AND GIVE IT TO THE END USER.
NOTE: It is now necessary to turn on the power in order to run the Opener to check for
proper operation and limit settings. Before doing so, ensure that all mounting hardware
are installed and properly tightened, that all electrical connections are per local code
requirements, and that proper wiring practices have been followed. Also, double-check
that all ropes have been removed from the door and that the doorway is clear.
WIRING TERMS
MOMENTARY CONTACT: Button can be
pushed and then released and door will keep
moving or stop without maintaining pressure
on the button.
CONSTANT PRESSURE: Constant pressure is
required on the button in order for continued
door movement. When the button is released,
the door will stop and possibly reverse to full
open depending on wiring type.
DOOR EDGE/ PHOTOELECTRIC INPUT: The
operator wiring provides for input from an
electric door safety edge or photoelectric
device that will cause a closing door to stop
and reverse it to open.
IMPORTANT SAFETY INSTRUCTIONS FOR OWNER
TO REDUCE THE RISK OF SEVERE INJURY OR DEATH:
READ AND FOLLOW ALL INSTRUCTIONS!
WARNING
FAILURE TO TEST REVERSING SYSTEM
COULD RESULT IN DEATH OR SERIOUS
INJURY. TEST THIS SYSTEM ONCE A
MONTH.
WARNING
AVOID ELECTROCUTION: DO NOT
ROUTE LOW VOLTAGE WIRES IN SAME
CONDUIT AS HIGH VOLTAGE WIRES.
FOLLOW ALL LOCAL ELECTRICAL
CODES OR THE NATIONAL
ELECTRICAL CODE (NEC).
WARNING

18
The clutch serves to protect the door, the
electric operator and other equipment from
undue stress or damage caused by starting
forces and/or an obstruction to the door. It
should be set NO TIGHTER than is necessary
to smoothly and consistently move the door
throughout its full range of travel. When
properly set, it will slip freely if the door should
encounter an obstruction, and it should be
possible to stop the travel of the door by hand.
WARNING: BEFORE ADJUSTMENT, REMOVE
POWER TO THE OPERATOR!
CAUTION: NEVER COMPRESS CLUTCH SPRING
BEYOND POINT LIMITED BY THE DESIGN
OF THE OPERATOR OR REPLACE IT WITH A
HEAVIER SPRING.
1. Remove cotter pin from slotted hex nut and
clutch shaft.
2. Back o slotted hex nut until there is
insucient tension on clutch spring to
permit clutch to
drive door.
3. Tighten slotted hex nut gradually until there
is just enough tension on spring to permit
operator to move door smoothly, but to
allow clutch to slip if door is obstructed.
4. Be sure cotter pin is reinstalled each time
operator is tested for clutch adjustment
and that it is locked in place upon
completion of adjustment.
Due to changing conditions of the door
and normal wear, it may be necessary to
occasionally re-adjust the clutch to obtain
dependable operation.
WARNING: BEFORE DOING SO, BE CERTAIN THAT
THE DOOR IS IN GOOD WORKING CONDITION,
IS PROPERLY COUNTERBALANCED, AND THAT
THE CLUTCH IS NOT SLIPPING BECAUSE OF
LOOSE OR MISSING HARDWARE, BINDING IN
THE TRACK, RUBBING AGAINST THE DOOR STOPS, OR DEFECTIVE OR MISADJUSTED SPRINGS. ANY
SERVICE REQUIRED TO THE DOOR, DOOR SPRINGS OR DOOR OPERATOR MUST BE PERFORMED BY A
QUALIFIED PROFESSIONAL DOOR INSTALLER.
The clutch pad will wear during normal operation and should be replaced when it becomes
dicult or impossible to suciently tighten the clutch to obtain smooth operation of the
door when it is in good working condition. To replace the clutch pad, rst loosen the motor
mounting bolts and remove the V-belt, followed by the clutch adjusting nuts, spring and
clutch pulley. Check condition of V-belt before reassembly and replace if required.
RISK OF ENTRAPMENT THAT MAY
RESULT IN SEVERE INJURY OR DEATH!
DISCONNECT POWER TO THE OPERATOR
BEFORE SERVICING OR MAKING
ADJUSTMENTS. ENSURE DOORWAY
IS CLEAR BEFORE STARTING TESTING
OF UNIT.
WARNING
ALWAYS DISCONNECT POWER TO
THE OPERATOR BEFORE SERVICING,
CONNECTING ACCESSORY DEVICES
OR MAKING ADJUSTMENTS.
CAUTION
CLUTCH ADJUSTMENT
OPERATION AND ADJUSTMENT INSTRUCTIONS
IMPROPER ADJUSTMENT OF CLUTCH
SETTING COULD CAUSE ENTRAPMENT,
INJURY OR DEATH. SET CLUTCH
ADJUSTMENT FOR JUST ENOUGH FORCE
TO OPERATE THE DOOR RELIABLY, BUT
NO STRONGER. CONTACT A SERVICE
PROFESSIONAL TO CORRECT ANY
BINDING, STICKING OR OTHER DOOR
PROBLEMS. DO NOT OVERADJUST
CLUTCH SETTING TO COMPENSATE FOR
A POORLY WORKING DOOR.
WARNING
FIGURE 15

19
Following installation, the operator MUST
be tested and respond correctly to all
controls as specied on the wiring diagram.
Keep personnel and equipment clear of
the area around the door when performing
the tests. When testing the 3-button wall
station, rst observe that each button
operates the door in the direction indicated
and that the STOP button performs that
function. With the door stopped at its full
open position, the OPEN button should
be inoperative. This should be veried
and, likewise, the CLOSE button should be
inoperative with the door fully closed.
Certain operator control circuits use only
a single-button or a 2-button control
station, and may be designed to function
dierently than the more common 3-button
circuit described above. Test the controls
in accordance with the proper response for
your installation.
Observe the door when traveling in each
direction for smoothness of operation. Test
the setting of the clutch by restraining the
door by hand. The clutch should slip. Re-
check the limit settings. The door should
close tightly at the oor without excessive
impact. Likewise, it should fully clear the
door opening without the trolley traveler
coming too close to the power head.
To test it for proper reversal, place an object
beneath the leading edge of the door. The
door should instantly reverse when it comes
into contact with the object, provided
the height of the object exceeds the cut
out point built into the Close Limit Switch
(approximately four inches).
To test the manual disconnect, rst move
the door to the fully closed position. Next,
disconnect the power to the operator.
Manual Door Operation mode should
engage when the release cord is pulled and
the door arm assembly releases from the
trolley traveler. If it is dicult to disengage
or engage the door arm assembly at the
closed position because the chain appears
to be under compression, reset the CLOSE
limit slightly to reduce the door travel in the
close direction.
TESTING
ALWAYS DISCONNECT POWER TO
THE OPERATOR BEFORE SERVICING,
CONNECTING ACCESSORY DEVICES
OR MAKING ADJUSTMENTS.
WARNING
DO NOT STAND UNDER DOOR TO
TEST REVERSING EDGE. USE A
CORRUGATED BOX OR SIMILAR
OBJECT.
WARNING

20
MAINTENANCE SUGGESTIONS
Normally, very little maintenance is required.
A monthly visual inspection must be made for
loose or missing hardware and for excessive
slack in the V-belt and Jackshaft Chain. The
clutch must be checked periodically and
adjustments made if necessary.
Test the reversing edge circuit or components (where applicable) at least once a month by
permitting the door to contact an obstruction while closing (Refer to Testing section of the
manual).
Lubrication of the operator is not required. It is important — for trouble-free service from
the operator — that the door be kept free from binding, is properly counter-balanced and
periodically lubricated. An annual inspection of the door BY A QUALIFIED SERVICE
TECHNICIAN IS RECOMMENDED.*
*The door must be in good operating condition. An electrical door operator cannot move a
garage door that is in poor condition. The door must operate freely in the track, with no binding
or obstructions, and must be well-balanced. Check the spring balance of your door by bringing
the door to a half-open position and leaving it there. If the door stays in that position, it is well
balanced. If it moves more than a few inches, the springs possibly need adjustment. CALL A
QUALIFIED SERVICE TECHNICIAN.
WARNING: Repairs and adjustments to the door and the door operator should be performed
only by someone qualied to service commercial overhead doors and operators.
We constantly strive to maintain and improve qualify of our products. Therefore, the
components shown in the illustrations were accurate at time of printing but are subject to
change without notice as quality improvements are made.
DO NOT STAND UNDER DOOR TO TEST
REVERSING EDGE. USE A CORRUGATED
BOX OR SIMILAR OBJECT.
WARNING