YK10-0015-DI-002-03
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CAUTION
●When using the automatic vacuum breaker (Time lag electromagnetic
leak valve which introduces the air in the pump by the valve opening
in 3 ～ 5 sec. after stopping the motor for the pump drive), do
connection so that it gangs with the motor.
4.2 Startup
4.2.1 Test run
Follow the procedure (1) – (5) below to start operation of the Pump unit.
(1) Check the piping.
Check and ensure that the piping and cable connection is completed (Refer to the “3.3 Inlet port
Piping/ Outlet port Piping Air ” and the “3.5 Electrical Connection”).
(2) Check the “3.7 How to tighten and how to remove the belt”.
(3) Check the lubrication oil level (Refer to “3.6 Lubrication”).
(4) Check the Cooling water (Refer to “3.4 Water Piping”).
Ensure that the Cooling water is flowing.
Check and ensure also that there is no cooling water leakage.
(5) Check the lubrication oil discharge operation and direction of rotation.
a. Close the air intake either by closing the valve on the inlet side of the mechanical
booster pump or by attaching a blind flange to the air intake.
b. Run the backing pump to exhaust inside the Mechanical booster pump. This time,
confirm that the pressure of the inlet or outlet of the booster pump comes down around
the ultimate pressure of the backing pump (1.3-13.0Pa for the standard backing pump)
and keep exhausting three minutes or more only by the backing pump under that state.
Exhausting three minutes shall delete the air component in the lubrication oil in the
Mechanical booster pump.
If the pressure does not decrease, leakage of piping, failure of backing pump, etc. are
conceivable, so please check.
c. Flow cooling water, and operate it for 3 seconds or so while seeing the belt.
If the belt moves in the arrow direction which is attached on the belt cover, it is normal
rotation. (Fig. 1 Warning Label)
If it rotated reverse, check the motor wire connection. The Motor is a three-phase
induction motor that would rotate reverse if two of three input wires were connected
reverse.
d. After checked the direction of rotation, run the Mechanical booster pump three minutes
or more to conduct the lubrication deaeration and lubrication circulation inside the
Pump unit.
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