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Chamberlain HD175DM 1/2 HP - page 1
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.chamberlain.com GARAGE DOOR OPENER Models HD175DM 1/2 HP HD150DM 1/3 HP For Residential Use Only 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 ...
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Chamberlain HD175DM 1/2 HP - page 2
2 TABLE OF CONTENTS When you see these Safety Symbols and Signal Words on the following pages, they will alert you to 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 ...
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Chamberlain HD175DM 1/2 HP - page 3
3 To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120 V, 60 Hz to avoid malfunction and damage. 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 ...
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Chamberlain HD175DM 1/2 HP - page 4
4 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 W all Safety Reversing Sensor Gap between floor and bottom of door must not exceed 1/4" (6 mm). Extension Spring T or ...
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Chamberlain HD175DM 1/2 HP - page 5
5 Access Door Safety Reversing Sensor Safety Reversing Sensor Gap between floor and bottom of door must not exceed 1/4" (6 mm). Door Bracket Straight Door Arm Garage Door CLOSED POSITION Header Bracket Curved Door Arm Chain Emergency Release Rope & Handle Cable Rail T rolley Stop Bolt Header W all Planning (Continued) ONE-PIECE DOOR INSTAL ...
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Chamberlain HD175DM 1/2 HP - page 6
6 2-Conductor Bell Wire White & White/Red Lighted Door Control Button with (2) screws 6ABx1-1/2" Chain and Cable in Dispensing Carton Curved Door Arm Section Safety Labels and Literature Straight Door Arm Section Hanging Brackets Door Bracket The Protector System (2) Safety Reversing Sensors (1 Sending Eye and 1 Receiving Eye) with 2-Condu ...
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Chamberlain HD175DM 1/2 HP - page 7
7 Wing Nut 1/4"-20 (2) Handle Nut 5/16"-18 (8) Ring Fastener (3) Spacer (2) Carriage Bolt 1/4"-20x1/2" (2) Insulated Staples (30) Rope Lock W asher 5/16" (7) Lag Screw 5/16"-9x1-5/8" (2) Hex Bolt 5/16"-18x7/8" (4) Master Link (2) Idler Bolt (1) Nut 3/8" (1) T rolley Threaded Shaft (1) Lock W asher 3 ...
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Chamberlain HD175DM 1/2 HP - page 8
8 FRONT RAIL (TOP) KEEP LARGER HOLE ON TOP ASSEMBLY STEP 1 Assemble the Rail & Install the Trolley To avoid installation difficulties, do not run the garage door opener until instructed to do so. Front Rail (T O DOOR) Window Cut-Out Screwdriver Idler Pulley Hole T abs Back Rails (T O MOT OR UNIT) T rolley T apered End T apered End Inner T rolle ...
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Chamberlain HD175DM 1/2 HP - page 9
9 To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the top of the opener. ASSEMBLY STEP 2 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. • Remo ...
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Chamberlain HD175DM 1/2 HP - page 10
10 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. Leave Chain and Cable Inside Dispensing Carton to Prevent Kinking. Dispensing Carton Keep Chain and Cable T aut When Dispensing Motor Uni t Sprocket " ...
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Chamberlain HD175DM 1/2 HP - page 11
11 INSTALLATION ASSEMBLY STEP 5 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 secu ...
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Chamberlain HD175DM 1/2 HP - page 12
12 INSTALLATION STEP 1 Determine the Header Bracket Location 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 f ...
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Chamberlain HD175DM 1/2 HP - page 13
13 Lag Screws 5/16"x9x1-5/8" – Finished Ceiling – Door Spring Header Wall UP Ceiling Mounting Holes 6" (15 cm) Maximum Header Bracket Vertical Centerline of Garage Door Garage Door Vertical Centerline of Garage Door INSTALLATION STEP 2 Install the Header Bracket You can attach the header bracket either to the wall above the garag ...
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Chamberlain HD175DM 1/2 HP - page 14
14 INSTALLATION STEP 3 Attach the Rail to the Header Bracket NOTE: (Optional) With some existing installations, you may re-use the old header bracket with the two plastic spacers included in the hardware bag. Place the spacers inside the bracket on each side of the rail, as illustrated. • Position the opener on the garage floor below the header b ...
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Chamberlain HD175DM 1/2 HP - page 15
15 ONE-PIECE DOOR WITHOUT TRACK A 2x4 on its side is convenient for setting an ideal door-to-rail distance. • Remove foam packaging. • Raise the opener onto a stepladder. You will need help at this point if the ladder is not tall enough. • Open the door all the way and place a 2x4 on its side on the top section of the door beneath the rail. ? ...
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Chamberlain HD175DM 1/2 HP - page 16
16 INSTALLATION STEP 5 Hang the Opener Three representative installations are shown. Yours may be different. Hanging brackets should be angled (Figure 1) to provide rigid support. On finished ceilings (Figure 2 and Figure 3), attach a sturdy metal bracket to structural supports before installing the opener. This bracket and fastening hardware are n ...
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Chamberlain HD175DM 1/2 HP - page 17
17 To prevent possible SERIOUS INJURY or DEATH from electrocution: • Be sure power is not connected BEFORE installing door control. • Connect ONLY to 24 VOLT low voltage wires. To prevent possible SERIOUS INJURY or DEATH from a closing garage door: • Install door control within sight of garage door, out of reach of children at a minimum heigh ...
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Chamberlain HD175DM 1/2 HP - page 18
18 INSTALLATION STEP 7 Install the Light and Lens INSTALL THE LIGHT • Install a 75 watt maximum light bulb in the socket. Light bulb size should be A19, standard neck only. The light will turn ON and remain lit for approximately 4-1/2 minutes when power is connected. Then the light will turn OFF. • Use A19, standard neck garage door opener bulb ...
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Chamberlain HD175DM 1/2 HP - page 19
19 INSTALLATION STEP 9 Electrical Requirements To avoid installation difficulties, do not run the opener at this time. To reduce the risk of electric shock, your garage door opener has a grounding type plug with a third grounding pin. This plug will only fit into a grounding type outlet. If the plug doesn't fit into the outlet you have, contac ...
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Chamberlain HD175DM 1/2 HP - page 20
20 Invisible Light Beam Protection Area Safety Reversing Sensor 6" (15 cm) max. above floor Safety Reversing Sensor 6" (15 cm) max. above floor Facing the door from inside the garage INSTALLATION STEP 10 Install The Protector System ® The safety reversing sensor must be connected and aligned correctly before the garage door opener will m ...
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Chamberlain HD175DM 1/2 HP - page 21
21 DOOR TRACK MOUNT (RIGHT SIDE) Indicator Light Lens Lip Sensor Brack et Door T rack FLOOR MOUNT (RIGHT SIDE) W ALL MOUNT (RIGHT SIDE) Indicator Light Sensor Brack et Lens Extension Brack et (See Accessories) Inside Garage W all (Provided with Extension Brack et) (Provided with Extension Brack et) Figure 1 Figure 2 Figure 3 Figure 4 W ALL MOUNT (R ...
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Chamberlain HD175DM 1/2 HP - page 22
22 Carriage Bolt 1/4"-20x1/2" Lens Wing Nut 1/4"-20 Figure 5 MOUNTING AND WIRING THE SAFETY REVERSING SENSORS • Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor. Use wing nuts to fasten sensors to brackets, with lenses pointing toward each other across the door. Be sure the lens is not obstructed by a ...
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Chamberlain HD175DM 1/2 HP - page 23
23 INSTALLATION STEP 11 Fasten the Door Bracket Follow instructions which apply to your door type as illustrated below or on the following page. A horizontal reinforcement brace should be long enough to be secured to two or three vertical supports. A vertical reinforcement brace should cover the height of the top panel. Figure 1 shows one piece of ...
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Chamberlain HD175DM 1/2 HP - page 24
24 Header W all V ertical Centerline of Garage Door Finished Ceiling Optional Placement of Door Bracket Header Bracket Door Bracket 2x4 Support For a door with no exposed framing, or for the optional installation, use lag screws 5/16"x1-1/2" (Not Provided) to fasten door bracket. MET AL DOOR T op of Door (Inside Garage) Door Bracket Optio ...
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Chamberlain HD175DM 1/2 HP - page 25
25 INSTALLATION STEP 12 Connect Door Arm to Trolley Follow instructions which apply to your door type as illustrated below and on the following page. SECTIONAL DOORS ONLY • Make sure garage door is fully closed. Pull the emergency release handle to disconnect the outer trolley from the inner trolley. Slide the outer trolley back (away from the pu ...
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Chamberlain HD175DM 1/2 HP - page 26
26 ALL ONE-PIECE DOORS 1. Assemble the door arm, Figure 4: • Fasten the straight and curved door arm sections together to the longest possible length (with a 2 or 3 hole overlap). • With the door closed, connect the straight door arm section to the door bracket with the 5/16"x1-1/4" clevis pin. • Secure with a ring fastener. 2. Adju ...
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Chamberlain HD175DM 1/2 HP - page 27
27 ADJUSTMENT STEP 1 Adjust the UP and DOWN Travel Limits Limit adjustment settings regulate the points at which the door will stop when moving up or down. To operate the opener, press the Door Control push bar. Run the opener through a complete travel cycle. • Does the door open and close completely? • Does the door stay closed and not reverse ...
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Chamberlain HD175DM 1/2 HP - page 28
28 ADJUSTMENT STEP 2 Adjust the Force Force adjustment controls are located on the back panel of the motor unit. Force adjustment settings regulate the amount of power required to open and close the door. If the forces are set too light, door travel may be interrupted by nuisance reversals in the down direction and stops in the up direction. Weathe ...
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Chamberlain HD175DM 1/2 HP - page 29
29 Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. • Safety reversal system MUST be tested every month. • If one control (force or travel limits) is adjusted, the other control may also need adjustment. • After ANY adjustments are made, t ...
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Chamberlain HD175DM 1/2 HP - page 30
30 OPERATION Using Your Garage Door Opener Your Security ✚ ® opener and hand-held remote control have been factory-set to a matching code which changes with each use, randomly accessing over 100 billion new codes. Your opener will operate with up to eight Security ✚ ® remote controls and one Security ✚ ® Keyless Entry System. If you purcha ...
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Chamberlain HD175DM 1/2 HP - page 31
31 To Open the Door Manually DISCONNECT THE TROLLEY: The door should be fully closed if possible. Pull down on the emergency release handle (so that the trolley release arm snaps into a vertical position) and lift the door manually. The lockout feature prevents the trolley from reconnecting automatically, and the door can be raised and lowered manu ...
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Chamberlain HD175DM 1/2 HP - page 32
32 CARE OF YOUR OPENER LIMIT AND FORCE ADJUSTMENTS: Weather conditions may cause some minor changes in door operation requiring some re-adjustments, particularly during the first year of operation. Pages 27 and 28 refer to the limit and force adjustments. Only a screwdriver is required. Follow the instructions carefully. Repeat the safety reverse t ...
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Chamberlain HD175DM 1/2 HP - page 33
33 HAVING A PROBLEM? 1. My door will not close and the light bulbs blink on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. • Verify the safety reversing sensors are properly installed, aligned and free of any obstructions. Refer to Installation Step ...
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Chamberlain HD175DM 1/2 HP - page 34
34 Installed Safety Reversing Sensor Bell Wire KG KG 1 3 9 7 5 1 3 9 7 5 1 2 3 1 LED or Diagnostic LED "Learn" Button Diagnostics Located On Motor Unit Safety Reversing Sensor Your garage door opener is programmed with self-diagnostic capabilities. The “Learn” button/diagnostic LED will flash a number of times then pause signifying it ...
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Chamberlain HD175DM 1/2 HP - page 35
35 *3-Button Remotes (315MHz) If provided with your garage door opener, the large button is factory programmed to operate it. Additional buttons on any Security ✚ ® 3-Button remote or mini-remote can be programmed to operate other Security ✚ ® garage door openers. To Erase All Codes From Motor Unit Memory To deactivate any unwanted remote, fi ...
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Chamberlain HD175DM 1/2 HP - page 36
36 1. Press and release the “learn” button on motor unit. The learn indicator light will glow steadily for 30 seconds. 2. Within 30 seconds, enter a four digit personal identification number (PIN) of your choice on the keypad. Then press and hold the ENTER button. 3. Release the button when the motor unit lights blink. It has learned the code. ...
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Chamberlain HD175DM 1/2 HP - page 37
37 3 1 5 4 2 6 REPAIR PARTS Rail Assembly Parts KEY P ART NO . NO. DESCRIPTION 1 4A1008 Master link kit 2 41C5141-1 Complete trolley assemb ly 3 41A5665-2 Complete rail 4 144C56 Idler pulley 5 41A5807 Chain and cable 6 12D598-1 “U” brac ket NO T SHO WN 183A163 W ear pads 7 10 12 5 NO TIC E 6 4 9 13 8 1 11 3 2 Installation Parts KEY P ART NO . N ...
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Chamberlain HD175DM 1/2 HP - page 38
38 Motor Unit Assembly Parts 2 10 8 13 14 15 16 19 4 3 DN UP Brown Wire (Down) Contact LIMIT SWITCH ASSEMBL Y Grey Wire Y ellow Wire (Up) Contact Center Limit Contact Drive Gear 9 20 16 12 18 11 17 3 1 5 6 7 KEY PART NO. NO. DESCRIPTION 1 41A5615 Chain Spreader 2 41C4220A Gear and sprocket assembly. Complete with: Spring washer, thrust washer, reta ...
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Chamberlain HD175DM 1/2 HP - page 39
39 LOCK LIGHT CLOSED OPEN LOCK LIGHT ACCESSORIES 3-Button SECURITY ✚ ® Remote Control : Includes visor clip. SECURITY ✚ ® Keyless Entry : Enables homeowner to operate garage door opener from outside by entering a password on a specially designed keyboard. Also can add a temporary password for visitors or service persons. This temporary passwo ...
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Chamberlain HD175DM 1/2 HP - page 40
© 2009, The Chamberlain Group, Inc. 114A3667B All Rights Reserved HOW TO ORDER REPAIR PARTS Selling prices will be furnished on request or parts will be shipped at prevailing prices and you will be billed accordingly. WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: • PART NUMBER • PART NAME • MODEL NUMBER ADDRESS ORDERS TO ...
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