1.3 Specification
Dry-Vac Type
Specification
200 300 400 800
Normal Displacement
60Hz (M
³
/Hr)
200 300 400 800
Ultimate Pressure (Torr)
0.1
0.05
0.05
0.01
Power KW (60Hz)
7.5
11
15
22
Rotation (RPM) (60Hz)
3500
Suction(A) 40 50 65
100
Port size (mm)
Discharge(A)
40 40 50 65
Cooling Water (L/Min)
3.0
7.6
7.6
10
Weight (Kg, Pump Only)
260
320
385
820
●
Note
(1) Synthetic and mineral type of oil can be used.
For shipping, we supply pure mineral gear oil.
(2)Above listed amount of Cooling Water is based on water temperature 20
℃
. So, the amount
of water may vary when using warmer water.
1.4 Piping Diagram
VACUUM IN (Suction)
COOLING WATER OUTLET
AIR FILTER SILENCER AIR VENT
AIR COOLER
DRY SCREW PUMP
COOLING WATER
INLET
<OPTION>
1.5 Purges
●
Cooling Purge
This purge is intended to cool the Screws and inside of casing.
During the operation of the pump, this purge is required to cool down compression heat of
discharged process gases. The process gases introduced into the casing from the suction side
are compressed by the rotation of the screw and transferred to discharge side. This ompression
process generates heat and will be transformed to gases. Since this compression heat reaches
above 130
℃∼
200
℃
in discharge side, we need cooling purge to cool down this heat.
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