LiftMaster 3255 3255 Manual - Page 28

CARE OF YOUR OPENER LIMIT AND FORCE ADJUSTMENTS: Weather conditions may cause some minor changes in door operation requiring some readjustments, particularly during the first year of operation. FORCE CONTROLS 9 1 7 3 5 KG 9 1 7 3 5 KG Pages 23 and 24 refer to the limit and force adjustments. Only a LIMIT CONTROLS screwdriver is required. Follow the instructions carefully. Repeat the safety reverse test (Adjustment Step 3, page 25) after any adjustment of limits or force. 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 and closes fully. Adjust limits and/or force if necessary (see pages 23 and 24). • 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 7). Once a Year • Oil door rollers, bearings and hinges. The opener does not require additional lubrication. Do not grease the door tracks. THE REMOTE CONTROL BATTERY To prevent possible SERIOUS INJURY or DEATH: • NEVER allow small children near batteries. • If battery is swallowed, immediately notify doctor. The lithium battery should produce power for up to 5 years. 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. 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. Battery positive side up (+) 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. 28