Chamberlain PD420 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.
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.
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 NO OTHER 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.
WARNING
CAUTION
WARNING
WARNING
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)
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 (+)
FORCE CONTROLS
LIMIT CONTROLS
1
3
9
7
5
kg
kg
+
+