Lubricant Management - Hitachi HISCREW 2000 Series Instruction Manual

4. DAILY CHECK [Lubricant Management]

4.3 Lubricant Management

1. When deteriorated lubricant is used without replacement, some of it adhere to the Oil Separator Ele-
ment and accumulate heat caused by its oxidization. This may bring even fire in the worst case.
2. Change lubricant and Oil Separator Element constantly according to the standard given by the Main-
tenance Standard (
3. Use genuine synthetic oil (NEW A OIL 2000) for lubricant. Avoid use of other brand or mix use
with it.
Oil Level Gauge
Upper
red line
Lower
level line
OSP-22SA ( R ) I
Type
OSP-22MA ( R ) I
Item
Oil level
1.7 liters
between
(0.34 liters / 1cm)
red lines
Oil replacement
8 liters
quantity
Replenish the oil (genuine synthetic oil) periodically to
maintain the proper oil level. Long time operation without
the oil replenishment at low oil level, can cause the shorter
oil life or oil deterioration.
Oil replenishment shall be carried out every 1500 to 2000
operating hours. Replenish amount might be;
2 to 3 liters for 22 kW, and 3 to 4 liters for 37 kW.
(Actual replenish amount shall be determined by the oil
level, as it is varied by the load rate of the compressor.)
Sampling analysis of the oil at every 3000 hours interval is
recommended. Earlier oil replacement might be neces-
sary, depending on the result of the analysis.
Consult HITACHI dealer for the sampling analysis.
18
WARNING
pp. 45-46). Deteriorated Lubricant may result fire to the Oil Separator.
OSP-37SA ( R ) I
OSP-37MA ( R ) I
2.6 liters
(0.51 liters / 1cm)
13 liters
CAUTION
4.3.1 Oil level check
Check lubricant level by the oil level gauge on the
oil case while the unit is working (loaded opera-
tion).
It is normal if the level is kept between two red
lines.
The level over the upper line is too much. Stop
the compressor and after check of no residual
pressure is left inside, discharge off the surplus
from the valve at oil case drain port.
If the level is lower than the lower red line, it is in
short. Stop the compressor and after check of no
residual pressure left inside, turn OFF the power
and replenish some more of lubricant.
IMPORTANT
Ask your dealer or Hitachi's service station for replace-
ment of the genuine synthetic oil (NEW A OIL 2000).
4 liters oil can: Part No. 330
20 liters oil can: Part No. 332
The genuine synthetic oil may get darkened due to its
chemical additives soon after start of use, but it is not
abnormal.