Chamberlain Merlin Whisper Drive MT3850WL Installation And Operating Instructions Manual Download Page 1

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MT3850WL

Sectional Garage Door Opener

INSTALLATION AND OPERATING INSTRUCTIONS

Owner’s Copy: Keep these Instruction for Future Reference.

Please read this manual and the enclosed safety materials carefully!
Periodic checks of the opener are required to ensure safe operation.

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Summary of Contents for Merlin Whisper Drive MT3850WL

Page 1: ...ION AND OPERATING INSTRUCTIONS Owner s Copy Keep these Instruction for Future Reference Please read this manual and the enclosed safety materials carefully Periodic checks of the opener are required t...

Page 2: ...ervice entrance door a CM1702 outside quick release must be installed This accessory allows manual operation of the garage door from outside in the event of power failure Keep garage door balanced Do...

Page 3: ...ement Preparing your garage door 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 b...

Page 4: ...ons 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...

Page 5: ...ag C840 Wireless Keypad x 2 Merlin C943 3 Button Wall or Visor Remote Control Opener Carton Belt Pack Inner Trolley Rail Braces One Piece Rail Header Sleeve Assembly Rail Cartons Max 40Watt E27 Light...

Page 6: ...omplete ASSEMBLY STEP 2 Install the Belt Remove belt from carton and lay it out on the floor be careful not to allow the belt to twist Hook the trolley connector into the connector slot on the inner t...

Page 7: ...mbly DOOR ASSEMBLY STEP 6 Attach the Rail to the Opener Holding belt out of the way Slide the rail assembly onto shim bracket until rail assembly is securely fastened to the opener Wrap the belt aroun...

Page 8: ...nsion Belt may slip off pulley if belt is too loose If belt does slip re tighten spring nut by turning nut clockwise a half turn Do NOT over tighten belt Hex Screws Belt Pulley Cover Mounting Plate Op...

Page 9: ...e height above the highest point of your door is less than recommended use the maximum height possible as long as the door does not contact the rail or refer to page 9 for ceiling installation To prev...

Page 10: ...eader bracket with coach bolts Ceiling mount Extend vertical centre line onto the ceiling Centre the header bracket on the vertical mark no more than 150mm 6 from the wall Make sure the arrow is point...

Page 11: ...e NOTE If the door spring is in the way you ll need help Have someone hold the opener securely on a temporary support to allow the rail to clear the spring Position the rail bracket against the header...

Page 12: ...or and rail 1 Raise the opener onto the support 2 Open the door completely and place a 100mm spacer between the door and the rail as shown 3 The top of the door should be level with the top of the ope...

Page 13: ...ke sure the rail is centred over the door or in line with the header bracket if the bracket is not centred above the door 7 Remove timber spacer Operate the door manually If the door hits the rail rai...

Page 14: ...r bracket Drill 4 5mm fastening holes Secure the door bracket using the two self threading screws Figure 2A Alternately use two 8mm bolts spring washers and nuts not provided Figure 2B Metal insulated...

Page 15: ...the door bracket on the top of the door in line with the header bracket as shown Mark either the left and right or the top and bottom holes Metal Doors Drill 4 5mm pilot holes and fasten the bracket w...

Page 16: ...Re connect to trolley with cut end down as shown Bring arm sections together Find two pairs of holes that line up and join with bolts spring washers and nuts Pull the emergency release handle toward t...

Page 17: ...ed 24 Volt Bell Wire PRE WIRED INSTALLATION REMOVE REPLACE COVER To Replace Insert Top Tabs First Push Bar Cover Terminal Screws BACK VIEW Top Mounting Hole Bottom Mounting Hole W 2 R 1 Bell Wire Wall...

Page 18: ...er tighten the wing nut on the receiving eye to allow for final adjustment Securely tighten the sending eye wing nut Run wires from both sensors to the opener and connect the two white only wires to t...

Page 19: ...gency release handle unless garage doorway is clear of persons and obstructions NEVER use handle to pull door open or closed Lens Hinge 40 Watt Max Standard Light Bulb Release Tab INSTALLATION STEP 10...

Page 20: ...flashing orange LED with beep indicates the opener is operating on battery power and that the battery charge is low To test the battery is functioning properly open and close the garage door Re conne...

Page 21: ...e orange button until the door reaches the desired DOWN closed position Figure 4 6 Once the door is closed if there appears to have too much pressure on the door you may adjust the door up and down us...

Page 22: ...op flashing when the force required to open and close your door has been learnt The door must travel through a complete cycle UP and DOWN in order for the force to be set properly If the opener cannot...

Page 23: ...stment Steps 1 and 2 Programming the Limits and Forces NOTE On a sectional door make sure limit adjustments do not force the door arm beyond a vertical position Refer Figure 3 page 15 Repeat the test...

Page 24: ...mote control to be learned and the worklight will flash to confirm the remote has been learned Hour Minute Feature Press or hold either of these buttons to increment the hour or minute displayed on th...

Page 25: ...e Orange indicator light on the opener will flash continuously 2 Press and release the learn button on the opener 3 The opener lights flash when it has learned the code If light bulbs are not installe...

Page 26: ...on Detecting Control C198 optional NOTE This method requires two people if the keyless entry is already mounted outside the garage 1 Enter a four digit personal identification number PIN of your choic...

Page 27: ...res for the sensors If the sensor indicator lights do not light replace the safety reversing sensors 3 Flashes Control console or wire shorted Symptom No LCD Display Inspect control console wires for...

Page 28: ...close positions proceed to Test the Safety Reversal System refer page 22 TROUBLE SHOOTING 1 Opener doesn t operate from either door control or remote Does the opener have electric or battery power Plu...

Page 29: ...mented rail sections 183D0178 Segmented rail braces 012C0855 Header bracket 171A0028 031D0537 Belt pulley cover Replacement belt packs 041A5844 2 3m 041A5844 1 2 5m 041A5844 2 3 0m 8423CR3 8430CR3 One...

Page 30: ...Y ENROLL C379 13 C198 1 Model CM844 4 Channel remote control 2 Model CM128 Wireless Wall Button 3 Model C940 1 Channel visor remote control 4 Model C943 3 Channel visor remote control 5 Model C945 3 C...

Page 31: ...L BATTERY To replace battery use a screwdriver blade to pry open the case as shown Insert battery positive side up Dispose of old battery properly Your opener can be activated by any of the following...

Page 32: ...neglect abuse wear and tear accident electrical storm excessive use or conditions other than normal domestic use This warranty does not cover any problems with or relating to the garage door or garag...