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Pump oil replacement procedure (see Figure8.）
(1) Release the pump inlet port to the atmosphere and operate the pump for five seconds.
The oil remaining in the pump is discharged efficiently.
(2) Remove the outlet port and drain plug to discharge the pump oil.
(3) Mount the drain plug, and add the required amount of the new specified pump oil
through the oil inlet port.
(4) If the pump oil is contaminated extremely, add new pump oil and perform operation
for a while (several minutes) to clean the pump. Repeat this a few times.
(5) After replacing with the new pump oil, operate the pump and when the pump has become
warm, check the ultimate pressure.
(6) If the pump oil is so dirty that oil sludge accumulates at the bottom of the pump,
the specified ultimate pressure even after the pump oil is replaced. In such a
case, overhaul the pump.
(7) Remove the oil inlet plug from the oil inlet port, and add the pump oil which has
been delivered together with the pump or the pump oil specified by us (R-2) up
to the range marked with the red line on the oil level gauge.
(8) When making the first lubrication, add oil near to the upper oil level limit shown
on the oil level gauge. After lubrication, mount the oil inlet plug to the pump.
Always keep the oil level of the pump within the oil limit range shown on the oil
level gauge during operation. If the amount of oil is incorrect, the performance
of the pump will deteriorate resulting in the malfunctioning of the pump.
When the amount of oil has reduced and the oil level has reached an area below
the lower red line which shows the lower limit on the oil level gauge such that
the level cannot be seen, the ultimate pressure increases and exhausting sound
may not cease.
－26－
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