LG GEN2 Series Installation And Operation Manual page 58

DANGER
Electric shock hazard. Can cause injury or death.
Before attempting to perform any service or
maintenance, turn the electrical power to the unit to
OFF at disconnect switch(es). Unit may have multiple
power supplies.
CAUTION
Use caution when removing access panels or other
unit components, especially while standing on a
ladder or other potentially unsteady base. Access
panels and unit components can be heavy and
serious injury may occur.
This unit requires minimal maintenance to operate
properly. Maintenance requirements for this model vary
for each installation and depend greatly on how much
the system is used and the cleanliness of the air.
Proper maintenance will both increase the life of the
system and maintain its efficiency. Maintenance must
be performed by experienced technicians and in the
case of refrigeration systems, must be done by an EPA
certified technician.
Maintenance frequency is based on a presumed
nominal use of the system. If the system is being
run constantly, the frequency should be adjusted
accordingly. If there is seasonal debris in the air which
can be drawn into the filters and the coils, they should
be checked more frequently. If the system is being
used for only a few hours per day, the frequency may
be reduced. Use the maintenance log at the end of
this manual to record each maintenance session
and observations and then establish a maintenance
schedule that is appropriate for the installation. The
following is provided as a guideline:
Maintenance Frequency:
Monthly
1. External Filter
Clean metal mesh filters
2. Internal Filters
Replace MERV 8 filters monthly.
Adjust replacement schedule for MERV 13 and
MERV 14 or other filters as inspection requires.
Semiannually
1. Check motor and motor bearings
Check for excessive heat, vibration or noise.
Lubricate bearings in accordance with the
motor manufacturer's recommendations.
2. Condensate Drain (if applicable)
Inspect and clean – refill with water
3. Condenser Coils
Inspect for cleanliness – clean as required
4. Outdoor Fan Blades and Motor (If applicable)
Check for cleanliness
Check all fasteners for tightness
Check for fatigue, corrosion, wear
Annually
It is recommended that the annual inspection and
maintenance occur at the start of the cooling season.
After completing the checklist, follow the unit start-up
checklist provided in the manual to ensure the
refrigeration system operates in the intended matter.
1. Lubrication
Apply lubricant where required
2. Dampers
Check for unobstructed operation
3. Blower Wheel and
Fasteners Check for
cleanliness
Check all fasteners for tightness
Check for fatigue, corrosion, wear
4. Door Seal
Check if intact and pliable
5. Wiring Connections
Check all connections for tightness
6. Cabinet
Check entire cabinet, inside and out, for dirt buildup
or corrosion. Remove accumulated dirt, remove
any surface corrosion and coat the area with
appropriate finish.