Chamberlain PD300DM User Manual
®
®
GARAGE DOOR OPENER
Model PD300DM • 1/2 HP
For Residential Use Only
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
Owner’s Manual
■ Please read this manual and the enclosed safety materials carefully!
■ Fasten the manual near the garage door after installation.
■ The door WILL NOT CLOSE unless the Protector System
properly aligned.
■ Periodic checks of the opener are required to ensure safe operation.
■ The model number label is located on the front panel of your opener.
®
is connected and
TABLE OF CONTENTS
Introduction 2-7
Safety symbol and signal word review ....................... 2
Preparing your garage door ....................................... 3
Tools needed .............................................................. 3
Planning .................................................................4-5
Carton inventory ......................................................... 6
Hardware inventory .................................................... 7
Assembly 8-11
Assemble the rail and install the trolley ...................... 8
Fasten the rail to the motor unit and
install the idler pulley .................................................. 9
Install the chain/cable ............................................... 10
Tighten the chain .......................................................11
Installation 11-26
Installation safety instructions ...................................11
Determine the header bracket location .................... 12
Install the header bracket ......................................... 13
Attach the rail to the header bracket ........................ 14
Position the opener .................................................. 15
Hang the opener ....................................................... 16
Install the door control .............................................. 17
Install the light .......................................................... 18
Attach the emergency release rope and handle ...... 18
Electrical requirements ............................................. 19
Install The Protector System®.............................. 20-22
Fasten the door bracket ...................................... 23-24
Connect the door arm to the trolley ..................... 25-26
Adjustment 27-29
Adjust the travel limits .............................................. 27
Adjust the force ........................................................ 28
Test the safety reversal system ................................ 29
Test The Protector System
®
..................................... 29
Operation 30-34
Operation safety instructions .................................... 30
Using your garage door opener ............................... 30
Using the wall-mounted Door Control ...................... 31
To open the door manually ....................................... 31
Care of your garage door opener ............................. 32
Having a problem? ................................................... 33
Diagnostic chart ........................................................ 34
Programming 35-36
To add or reprogram a hand-held remote control .... 35
To erase all codes .................................................... 35
3-Button Remotes .................................................... 35
To add, reprogram or change
a Keyless Entry PIN ................................................. 36
Repair Parts 37-38
Rail assembly parts .................................................. 37
Installation parts ....................................................... 37
Motor unit assembly parts ........................................ 38
Accessories 39
Repair Parts and Service 40
Warranty 40
INTRODUCTION
Safety Symbol and Signal Word Review
This garage door opener has been designed and tested to offer safe service provided it is installed, operated,
maintained and tested in strict accordance with the instructions and warnings contained in this manual.
When you see these Safety Symbols and Signal
Words on the following pages, they will alert you to
Mechanical
Electrical
the possibility of serious injury or death if you do
not comply with the warnings that accompany them.
The hazard may come from something mechanical
or from electric shock. Read the warnings carefully.
When you see this Signal Word on the following
pages, it will alert you to the possibility of damage to
your garage door and/or the garage door opener if
you do not comply with the cautionary statements
that accompany it. Read them carefully.
2
Preparing your garage door
2
1
Before you begin:
• Disable locks.
• Remove any ropes connected to garage door.
• Complete the following test to make sure your
garage door is balanced and is not sticking or
binding:
1. Lift the door about halfway as shown. Release
the door. If balanced, it should stay in place,
supported entirely by its springs.
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call a
trained door systems technician.
To prevent possible SERIOUS INJURY or DEATH:
• ALWAYS call a trained door systems technician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door may not reverse when
required.
• NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, all
of which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing and operating garage
door opener to avoid entanglement.
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and
operating the opener.
• ONLY operate garage door opener at 120V, 60 Hz to
avoid malfunction and damage.
Sectional Door
One-Piece Door
Carpenter’s
Level (optional)
Drill
Tape Measure
Drill Bits
3/16", 5/16"
and 5/32"
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as
illustrated below.
Pencil
Hack Saw
Claw Hammer
Wire Cutters
Screwdriver
Stepladder
Sockets and Wrench
1/2", 5/8", 7/16", 9/16"
and 1/4"
Pliers
Adjustable End Wrench
3
Safety Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 23 for details.
— — — — — — — —
Header Wall
Safety
Reversing
Sensor
Gap between floor and bottom of door
must not exceed 1/4" (6 mm).
Extension Spring
Torsion Spring
Access
Door
OR
Slack in chain tension
is normal when
garage door is closed.
Wall-mounted
Door
Control
Motor Unit
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 16.
Vertical
Centerline
of Garage Door
Planning
Trolley
stop bolt
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
Chain
CLOSED POSITION
Identify the type and height of your garage door.
Survey your garage area to see if any of the
conditions below apply to your installation. Additional
materials may be required. You may find it helpful to
refer back to this page and the accompanying
illustrations as you proceed with the installation of
your opener.
Depending on your requirements, there are several
installation steps which may call for materials or
hardware not included in the carton.
• Installation Step 1 – Look at the wall or ceiling
above the garage door. The header bracket must
be securely fastened to structural supports.
• Installation Step 5 – Do you have a finished ceiling
in your garage? If so, a support bracket and
additional fastening hardware may be required.
• Installation Step 10 – Depending upon garage
construction, extension brackets or wood blocks
may be needed to install sensors.
• Installation Step 10 – Alternate floor mounting of
the safety reversing sensor will require hardware
not provided.
• Do you have an access door in addition to the
garage door? If not, Model 7702CB Emergency
Key Release is required. See Accessories page.
• Look at the garage door where it meets the floor.
Any gap between the floor and the bottom of the
door must not exceed 1/4" (6 mm). Otherwise, the
safety reversal system may not work properly. See
Adjustment Step 3. Floor or door should be
repaired.
SECTIONAL DOOR INSTALLATIONS
• Do you have a steel, aluminum, fiberglass or glass
panel door? If so, horizontal and vertical
reinforce ment is required (Installation Step 11).
• The opener should be installed above the center of
the door. If there is a torsion spring or center
bearing plate in the way of the header bracket, it
may be installed within 4 feet (1.22 m) to the left or
right of the door center. See Installation Steps 1
and 11.
• If your door is more than 7 feet (2.13 m) high, see
rail extension kits listed on Accessories page.
SECTIONAL DOOR INSTALLATION
4
Planning (Continued)
ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, refer to
the information relating to sectional doors in
Installation Step 11.
• Depending on your door’s construction, you may
need additional mounting hardware for the door
bracket (Step 11).
ONE-PIECE DOOR WITHOUT TRACK
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 16.
Header Wall
Rail
Slack in chain tension
is normal when garage
door is closed.
Access
Door
Wall-mounted
Door Control
Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• The gap between the bottom of the garage door and
the floor MUST NOT exceed 1/4" (6 mm). Otherwise,
the safety reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
Motor Unit
CLOSED POSITION
Trolley Stop Bolt
Cable
Trolley
Gap between floor
Safety Reversing Sensor
and bottom of door must not exceed 1/4" (6 mm).
ONE-PIECE DOOR WITH TRACK
Gap between floor
Safety
Reversing Sensor
and bottom of door
must not exceed 1/4" (6 mm).
Safety Reversing
Sensor
Access
Door
Safety
Reversing
Sensor
Header
Wall
Header
Bracket
Door Bracket
Header
Wall
CLOSED POSITION
Trolley Stop Bolt
Header
Bracket
Door
Bracket
Garage
Door
Straight
Door
Arm
Garage Door
Cable
Curved
Door Arm
Straight
Door
Arm
Rail
Curved
Door
Arm
Chain
Rail
Emergency
Release
Rope &
Handle
Emergency
Release
Rope & Handle
5
Carton Inventory
Your garage door opener is packaged in one carton
which contains the motor unit and all parts illustrated
below. Accessories will depend on the model
purchased. If anything is missing, carefully check the
Lighted Door Control Button
Trolley
SECURITY✚
Single-Button Remote Control
®
Motor Unit with a Light Lens
packing material. PARTS MAY BE STUCK IN THE
FOAM. Hardware for assembly and installation is
shown on the next page. Save the carton and packing
material until installation and adjustment is complete.
Idler Pulley
SECURITY✚
Keyless Entry
Rail
Center/Back
Sections
®
Chain Spreader
Door Bracket
2-Conductor Bell Wire
White & White/Red
Rail
Front (header)
Section
Safety Sensor
Bracket (2)
Chain and Cable in
Dispensing Carton
"U" Bracket
Hanging Brackets
Curved Door
Arm Section
The Protector System
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
®
Header Bracket
Straight Door
Arm Section
Safety Labels
and
Literature
6
Hardware Inventory
Separate all hardware and group as shown below for the assembly and installation procedures.
ASSEMBLY HARDWARE
Lock Nut
1/4"-20 (2)
Bolt 1/4"-20x1-3/4 (2)
Carriage Bolt
1/4"-20x1/2" (2)
Trolley Threaded Shaft (1)
Wing Nut
1/4"-20 (2)
Lock Washer
3/8" (1)
INSTALLATION HARDWARE
Ring
Fastener (3)
Nut 5/16"-18 (8)
Nut
3/8" (1)
Master
Link (2)
Idler Bolt (1)
Handle
5/16"-9x1-5/8" (2)
Lag Screw
5/16"-18x1-7/8" (2)
Self-Threading Screw
1/4"-14x5/8" (2)
Clevis Pin
5/16"x1-1/2" (1)
Hex Bolt
5/16"-18x7/8" (4)
Screw
6ABx1-1/4" (2)
Drywall Anchors (2)
Clevis Pin
5/16"x1" (1)
7
Lock Washer 5/16" (7) Lag Screw
Clevis Pin
5/16"x1-1/4" (1)
Insulated
Staples (30)
Screw 6-32x1" (2)
Spacer (2)
Rope
ASSEMBLY STEP 1
Front Rail
(TO DOOR)
Window
Cut-Out
Screwdriver
Idler
Pulley
Hole
Ta bs
Back Rails
(TO MOTOR UNIT)
Trolley
Tapered
End
Tapered
End
Inner Trolley
Wear Pads
Outer Trolley
Tapered
End
Tapered
End
Assemble the Rail & Install the Trolley
To avoid installation difficulties, do not run the
garage door opener until instructed to do so.
The front rail has a cut out “window” at the door end
(see illustration). The hole above this window is
larger on the top of the rail than on the bottom. A
smaller hole 3-1/2" (8.9 cm) away is close to the rail
edge. Rotate the back rail so it has a similar hole
close to the opposite edge, about 4-3/4" (12 cm)
from the far end.
1. Remove the straight door arm and hanging
bracket packaged inside the front rail and set
aside for Installation Step 5 and 12. NOTE: To
prevent INJURY while unpacking the rail carefully
remove the straight door arm stored within the rail
section.
2. Align the rail sections on a flat surface as shown
and slide the tapered ends into the larger ones.
Tabs along the side will lock into place.
To prevent INJURY from pinching, keep hands and
fingers away from the joints while assembling the rail.
3. Place the motor unit on packing material to protect
the cover, and rest the back end of the rail on top.
For convenience, put a support under the front
end of the rail.
4. As a temporary trolley stop, insert a screwdriver
into the hole 10" (25 cm) away from the front of
the rail, as shown.
5. Check to be sure there are 4 plastic wear pads
inside the inner trolley. If they became loose
during shipping, check all packing material. Snap
them back into position as shown.
6. Slide the trolley assembly along the rail from the
back end to the screwdriver.
KEEP LARGER
HOLE ON TOP
FRONT RAIL
(TOP)
8
ASSEMBLY STEP 2
Motor Unit
Sprocket
"U" Bracket
Hex Screws
8-32x7/16"
Chain
Spreader
Lock Nut
SLIDE RAIL TO STOPS
ON TOP AND SIDES
OF BRACKET
Cover
Protection
Bolt Hole
Bolt
Bolts
Lock
Washer
3/8"
Nut 3/8"
Cable Link
Idler
Bolt
Chain and
Cable
Pulley
Rail
Bolt
Nut
Washer
Trolley
Idler
Pulley
Idler
Pulley
Grease
Inside Pulley
Screwdriver
Trolley
Stop Hole
Bolt
Lock
Nut
Fasten the Rail to the Motor Unit
• Insert a 1/4"-20x1-3/4 bolt into the cover protection
bolt hole on the back end of the rail as shown.
Tighten securely with a 1/4"-20 lock nut. Do NOT
overtighten.
• Remove the two bolts from the top of the motor
unit.
• Place the “U” bracket, flat side down onto the
motor unit and align the bracket hole with the bolt
holes. Fasten with the previously removed bolts.
• Align the rail assembly with the top of the motor
unit. Slide the rail end onto the “U” bracket, all the
way to the stops that protrude on the top and sides
of the bracket.
• Attach spreader to the motor unit with two screws.
HARDWARE SHOWN ACTUAL SIZE
Lock Nut
Bolt 1/4"-20x1-3/4"
1/4"-20
To avoid SERIOUS damage to garage door opener,
use ONLY those bolts/fasteners mounted in the top of
the opener.
ASSEMBLY STEP 3
Install the Idler Pulley
• Lay the chain/cable beside the rail, as shown.
Grasp the end of the cable and pass approximately
12" (30 cm) of cable through the window. Allow it
to hang until Assembly Step 5.
• Remove the tape from the idler pulley. The inside
center should be pre-greased. If dry, regrease to
ensure proper operation.
• Place the idler pulley into the window as shown.
• Insert the idler bolt from the top through the rail
and pulley. Tighten with a 3/8" lock washer and nut
underneath the rail until the lock washer is
compressed.
• Rotate the pulley to be sure it spins freely.
• Insert a 1/4"-20x1-3/4 bolt into the trolley stop hole
in the front of the rail as shown. Tighten securely
with a 1/4"-20 lock nut.
Idler Bolt
HARDWARE SHOWN ACTUAL SIZE
Bolt 1/4"-20x1-3/4"
Lock Nut 1/4"-20
Nut 3/8"
Lock Washer 3/8"
9
"U" Bracket
Motor Unit
Sprocket
Chain
Spreader
Bolt
KG
KG
ASSEMBLY STEP 4
Round
Hole
Trolley
Threaded
Shaft
Install the Chain/Cable
1. Pull the cable around the idler pulley and toward
the trolley.
2. Connect the cable to the retaining slot on the
trolley, as shown (Figure 1):
• From below, push pins of master link bar up
through cable link and trolley slot.
• Push master link cap over pins and past pin
notches.
• Slide clip-on spring over cap and onto pin
notches until both pins are securely locked in
place.
3. With the trolley against the screwdriver, dispense
the remainder of the cable/chain along the rail
toward the motor unit into the slot on the chain
spreader, around the sprocket onto the chain
spreader and continuing to the trolley assembly.
The sprocket teeth must engage the chain
(Figure 2).
4. Check to make sure the chain is not twisted, then
connect it to the threaded shaft with the remaining
master link.
5. Thread the inner nut and lock washer onto the
trolley threaded shaft (Figure 3).
6. Insert the trolley threaded shaft through the hole in
the trolley. Be sure the chain is not twisted
(Figure 4).
7. Loosely thread the outer nut onto the trolley
threaded shaft.
8. Remove the screwdriver.
To avoid possible SERIOUS INJURY to fingers from
moving garage door opener:
• ALWAYS keep hand clear of sprocket while operating
opener.
• Securely attach chain spreader BEFORE operating.
Dispensing Carton
Leave Chain and Cable
Inside Dispensing
Carton to Prevent Kinking.
Keep Chain and Cable
Taut When Dispensing
Figure 1
Master Link
Clip-On Spring
Master Link
Idler
Pulley
Clip-On Spring
Cable
Link
Cable
Master
Link Cap
Slotted
Hole
Master
Link Bar
Trolley
Threaded
Shaft
Round
Hole
Master
Link Cap
Pin
Notch
Master
Link Bar
Figure 2
Figure 4
Figure 3
Trolley
Threaded
Inner Nut
5/16"
Lock
Washer
5/16"
Shaft
10
ASSEMBLY STEP 5
WARNING
WARNING
WARNINGWARNING
Tighten the Chain
• Spin the inner nut and lock washer down the
trolley threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown (Figure 1).
• When the chain is approximately 1/4" (6 mm)
above the base of the rail at its midpoint, re-tighten
the inner nut to secure the adjustment.
Sprocket noise can result if chain is too loose.
When installation is complete, you may notice some
chain droop with the door closed. This is normal. If
the chain returns to the position shown in Figure 2
when the door is open, do not re-adjust the chain.
NOTE: During future maintenance, ALWAYS pull the
emergency release handle to disconnect trolley
before adjusting chain.
NOTE: You may notice loosening of chain after
Adjustment Step 3 (Test the Safety Reversal
System). Check for proper tension and readjust chain
if necessary. Then repeat Adjustment Step 3.
You have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
Figure 1
Figure 2
To Tighten Outer Nut
Chain
Base of Rail
Lock
Outer
Washer
Nut
To Tighten
Inner Nut
1/4" (6 mm)
Mid length of Rail
Trolley
Threaded
Shaft
Inner Nut
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
1. READ AND FOLLOW ALL INSTALLATION WARNINGS
AND INSTRUCTIONS.
2. Install garage door opener only on properly balanced
and lubricated garage door. An improperly balanced
door may not reverse when required and could result in
SEVERE INJURY or DEATH.
3. All repairs to cables, spring assemblies and other
hardware MUST be made by a trained door systems
technician BEFORE installing opener.
4. Disable all locks and remove ALL ropes connected to
garage door BEFORE installing opener to avoid
entanglement.
5. Install garage door opener 7 feet (2.13 m) or more
above floor.
6. Mount emergency release handle 6 feet (1.83 m) above
floor.
7. NEVER connect garage door opener to power source
until instructed to do so.
8. NEVER wear watches, rings or loose clothing while
installing or servicing opener. They could be caught in
garage door or opener mechanisms.
9. Install wall-mounted garage door control:
• within sight of the garage door.
• out of reach of children at minimum height of 5 feet
(1.5 m).
• away from ALL moving parts of the door.
10. Place entrapment warning label on wall next to garage
door control.
11. Place manual release/safety reverse test label in plain
view on inside of garage door.
12. Upon completion of installation, test safety reversal
system. Door MUST reverse on contact with a
1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on
the floor.
11
INSTALLATION STEP 1
Header Wall
Sectional door with curved track
Highest Point
of Travel
Door
2" (5 cm)
One-piece door with horizontal track
Door
Track
Header Wall
Highest Point
of Travel
2" (5 cm)
Track
Door
Jamb
Hardware
One-piece door without track:
jamb hardware
8" (20 cm)
Highest
Point
of Travel
Door
Pivot
8" (20 cm)
One-piece door without track:
pivot hardware
Highest
Point
of Travel
Header Wall
Header Wall
Determine the Header Bracket Location
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to
structural support on header wall or ceiling, otherwise
garage door might not reverse when required. DO NOT
install header bracket over drywall.
• Concrete anchors MUST be used if mounting header
bracket or 2x4 into masonry.
• NEVER try to loosen, move or adjust garage door,
springs, cables, pulleys, brackets, or their hardware,
all of which are under EXTREME tension.
• ALWAYS call a trained door systems technician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door might not reverse when
required.
Installation procedures vary according to garage door
types. Follow the instructions which apply to your
door.
1. Close the door and mark the inside vertical
centerline of the garage door.
2. Extend the line onto the header wall above the
door.
You can fasten the header bracket within 4 feet
(1.22 m) of the left or right of the door center
only if a torsion spring or center bearing plate
is in the way; or you can attach it to the ceiling
(see page 13) when clearance is minimal. (It
may be mounted on the wall upside down if
necessary, to gain approximately 1/2" (1 cm).
If you need to install the header bracket on a 2x4
(on wall or ceiling), use lag screws (not provided)
to securely fasten the 2x4 to structural supports as
shown here and on page 13.
3. Open your door to the highest point of travel as
shown. Draw an inter secting horizontal line on the
header wall above the high point:
• 2" (5 cm) above the high point for sectional door
and one-piece door with track.
• 8" (20 cm) above the high point for one-piece
door without track.
This height will provide travel clearance for the top
edge of the door.
NOTE: If the total number of inches exceeds the
height available in your garage, use the maximum
height possible, or refer to page 13 for ceiling
installation.
Header Wall
Unfinished
Ceiling
Vertical Centerline
of Garage Door
Level
(optional)
2x4
2x4
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Structural
Supports
12
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