YK11-0016-DI-002-08
17
2.5 Pump Performance
2.5.1 Ultimate Pressure
The ultimate pressure of the mechanical booster pump change greatly depending upon the
ultimate pressure of the backing pump.
Special care is necessary when a backing pump other than the standard combination is used. If
the ultimate pressure rises, it is necessary to measure the ultimate pressure of the backing pump,
too.
Note that the Pump exhausted a lot of water or left keeping the inlet/outlet opened to the air long
time might have the water attached inside and have a trouble in lowering the ultimate pressure to
the specified value just after started operation. Such a trouble shall be mostly resolved by keeping
running light the unit whole day and night as the attached substances would evaporate again and
return to the normal condition.
2.5.2 Pumping Speed
The pumping speed of the mechanical booster pump changes depending on the inlet pressure.
Also, the pumping speed of the mechanical booster pump fluctuates depending on the difference
of the inlet port/the outlet port pressure of the mechanical booster pump during operating.
An increase of pumping speed of the backing pump allows the inlet port/the outlet port pressure
difference to lessen.
As a result, the pumping speed of the area on the atmospheric pressure side becomes larger due
to the pressure which the maximum speed of the mechanical booster pump comes out. Reversely,
upon the pumping speed of the backing pump being small, the pumping speed of the mechanical
booster pump becomes small.
When the mechanical booster pump is used in combination with a backing pump other than the
standard one (rotary pump or water sealing pump), it is necessary to examine its pumping
performance to see if the required pumping speed and ultimate pressure can be obtained.
Summary of Contents for PMB100D
Page 2: ......
Page 3: ...Declaration of Conformity...
Page 39: ...YK11 0016 DI 002 08 12 2 4 Dimensional drawing Fig 11 Dimensional drawing PMB100D...
Page 40: ...YK11 0016 DI 002 08 13 Fig 12 Dimensional drawing PMB300D...
Page 41: ...YK11 0016 DI 002 08 14 Fig 13 Dimensional drawing PMB600D...
Page 42: ...YK11 0016 DI 002 08 15 Fig 14 Dimensional drawing PMB1200D...
Page 43: ...YK11 0016 DI 002 08 16 Fig 15 Dimensional drawing PMB2400D...
Page 62: ...YK11 0016 DI 002 08 35...
Page 65: ...YK11 0016 DI 002 08 38...
Page 72: ...YK11 0016 DI 002 08 45...
Page 84: ...YK11 0016 DI 002 08 57 Fig 28 PMB300D Optional attachment figure...
Page 85: ...YK11 0016 DI 002 08 58 Fig 29 PMB600D Optional attachment figure...
Page 86: ...YK11 0016 DI 002 08 59 Fig 30 PMB1200D Optional attachment figure...
Page 89: ...YK11 0016 DI 002 08 62 Fig 33 Dimensional drawing PMB2400D Horizontal exhaust model...
Page 99: ...YK11 0016 DI 002 08 72...
Page 105: ...YK11 0016 DI 002 08 78...
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