Komatsu PW130ES-6K Operation & Maintenance Manual page 200

MAINTENANCE.
which disable the system if the pressure is too high or low, to pre-
vent damage to the system.
If the air conditioner fails to operate it may be due to:
a) Low pressure
i) Check for leaks.
ii) Consult your distributor to recharge system.
b) High pressure
i) Check for blockages in piping.
Check in off-season
When not being used for a long period, operate the cooler for 3 to
5 minutes once a month to supply lubricant to each component of
the compressor.
Inspection and maintenance items list for cooler
Inspection and
maintenance items
Refrigerant (gas)
Condenser
Compressor
V belt
Blower motor and fan
Control mechanism
Piping for connection
DRAIN ENGINE BREATHER OIL CATCHER
Periodically drain oil from the engine breather catcher and when-
ever it is necessary to remove the engine undercover.
1. Remove plug (1) from engine undercover (3) and allow oil to
drain out.
2. Replace plug (1).
Ensure that the breather hose (2) is positioned onto catcher res-
ervoir whenever the undercover is removed.
Contents
Filling quantity
Clogging of fin
Function
Damage and tension
Function (Check for normal sound)
Function (Check for function)
Installation condition looseness of
tightening connection portion gas
leakage, damage
Maintenance interval
Twice a year; spring and autumn
Every 500 hours
Every 4000 hours
Every 250 hours
When required
When required
When required
SERVICE PROCEDURE
199