YK10-0015-DI-002-03
39
Trouble Causes Processing Method Reference
Unusual
sounds
make.
1
Motor rotation direction is
reverse.
Do the connection again to correct
the rotation direction.
3.5
2
Cooling water does not flow.
(Specified volume is not
flowing.)
Keep flowing the cooling water by
the specified volume. 3.4
3
Oil is not filled.
Oil is under the lower
limit of the Oil level
gauge.
Overhaul
(Replacement of the pump part)
3.6
4 Belt cover bolts is loose. Tighten the bolts.
2.3
3.2
5
The anchor bolt is loosening.
Ensure that the pump be installed at
level as much as possible.
2.3
3.2
6 The belt is loosening. Re-tighten the belt. 3.8
7 The pulley is loosening. Re-tighten the pulley. －
8
Any sound (clattering)
synchronized with rotating
speed?
Clattering is heard.
Disassemble and repair the
pump.(Re-adjust timing.)
5.4
9
Is rasping noise always
heard?
Roaring noise is heard.
Disassemble and repair the pump.
Replace bearing and gear.
5.4
10
Metal noise of high frequency
Stop the Pump, lubricate the
Mechanical seal.
3.6.2
11
Shortly after the startup, a
mechanical (rasping) noise
and vibration occur.
These are temporary phenomena
that stop after the pump warms up
and reaches its steady state.
So it is not a fault.
－
The
temperature
on the pump
surface is
abnormally
high.
1
The pump continuously runs
at a high suction pressure.
The continuous operating time from
the maximum inlet pressure to
400Pa should be within 20 minutes.
Check the backing pump.
2.2
2
Capacity of the backing pump
is short.
Replacement of the backing pump.
2.2
3
The oil is not supplied by the
specified volume.
(Less oil volume would lower
the cooling effect of the
Pump.)
Supply the oil by the specified
volume.
3.6
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