Chamberlain 248735 3/4 HP Garage Door Opener User Manual


 
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 test
(Adjustment Step 3, page 29)
after any adjustment of limits or force.
FORCE CONTROLS
1
3
9
7
5
1
3
9
7
5
LIMIT CONTROLS
KG
KG
THE REMOTE CONTROL BATTERY
The lithium battery should produce
power for up to 5 years.
To replace battery, use the visor
clip or screwdriver blade to pry
open the case as shown. Insert
battery positive side up (+).
Dispose of old battery properly.
Replace the battery with only
3V2032 coin cell batteries.
NOTICE: To comply with FCC and or Industry Canada rules (IC), adjustment or modifications of this
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the
battery. THERE ARE NOOTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
To prevent possible SERIOUS INJURY or DEATH:
NEVER allow small children near batteries.
If battery is swallowed, immediately notify doctor.
To reduce risk of fire, explosion or chemical burn:
Replace ONLY with 3V2032 coin batteries.
Do NOT recharge, disassemble, heat above 100°C (212°F)
or incinerate.
MAINTENANCE SCHEDULE
Once a Month
Manually operate door. If it is unbalanced or binding,
call a trained door systems technician.
Check to be sure door opens & closes fully. Adjust limits
and/or force if necessary. (See pages 27 and 28)
Repeat the safety reverse test. Make any necessary
adjustments. (See Adjustment Step 3)
Twice a Year
Check chain tension. Disconnect trolley first. Adjust if
necessary. (See page 11)
Once a Year
Oil door rollers, bearings and hinges. The opener does
not require additional lubrication. Do not grease the
door tracks.
Battery
positive
side up (+)