LG GHP SUPER - Page 86

86
REGULAR MAINTENANCE
ENGLISH
CAUTION
• In order to cool down completely, stop the unit 1~2 hours prior to maintenance/replace-
ment. If you touch a heated area of the outdoor unit parts which was in operation, it may
cause burns.
• Make sure to shut off the power breaker of the outdoor control panel when performing
internal work on the outdoor unit. If the indoor unit is operated by the customer’s remote
control during internal work, it may cause injury or equipment damage.
• Use authentic products from LG electronics for the parts replacement.
Use of inauthentic parts or oil can cause malfunction of the unit and the customer will be
responsible for any damages involved.
!
h Compressor drive belt replacement
- The drive belt should be replaced every 10,000 hours or 5 years. (whichever comes first)
- Use authentic products from LG electronics for the drive belt replacement.
- (caution) Stop the engine by controlled shutdown before the maintenance. (refer to 'Opera-
tion restriction of the outdoor unit prior to maintenance' in the 'Self-diagnosis')
Refer to the table below when preparing the tools and part required for the replacement/mainte-
nance.
Necessary parts
and tools
Specifications and
Stock No.
Quantity Remarks
Coolant/antifreeze
solution
Ethylene glycol
100%
Moderate
amount
Distilled water
100% distilled
water
Moderate
amount
Dry cloth
Some
/a few
Measuring
container
1.5 ~ 2 L 1 Coolant exclusive
Concentration
gauge
Optical 1 Ethylene glycol exclusive
Coolant checkup/refill
- Remove the upper side panel of the outdoor unit.
- If the coolant level of supplementary tank is between L and H about 10 minutes after the unit
stops operating, it indicates a normal coolant level. If the level is close to L, refill the coolant.
- If there is a substantial change in the coolant level few days after refilling, check for any leak-
ages.
- For the coolant refill, dilute the ethylene glycol 100% with distilled water by 50:50. Open the
cap on the top of the tank to refill the coolant up to the MAX limit (for about 4 liters) and close
the cap. (concentration: 50%, freezing point: above -35 °C)
- After completing the maintenance, clean the spilled coolant with a dry cloth and close the top
panel.
Coolant checkup/refill