－5－
２．
Outline of the pump
2.1
Specification
This oil sealed rotary vacuum pump is a rotary vane pump (hereinafter called Gaede type
pump) in which the pump is directly driven by the motor. Since the pump is small, light,
and quite simply constructed, it is easily maintained and repaired.
Table 1.Specification
GHD-031A
GHD-031B
Model
Unit
50Hz
60Hz
50Hz
60Hz
Type
-
Rotary vane (2 vanes)
Pumping speed
L/min
30
36
30
36
Ultimate Pressure
Pa
6.7×10
-1
Type
-
1φ.100W.2P.Capacitor Run
Voltage
V
100-110
100-120
200-240
Motor
Thermal
Class
-
Ｅ
Full-load current
A
1.85(100V)
1.80(110V)
1.89(100V)
1.71(120V)
0.94(200V)
0.84(240V)
1.02(200V)
1.03(240V)
Motor speed
r/min
2500(100V)
2600(110V)
3100(100V)
3300(120V)
2400(200V)
2600(240V)
2900(200V)
3100(240V)
Standard
oil
-
R-2
Oil
Oil
amount
mL
370
Weight
ｋg
9.3
Ambient temperature
range
℃
7～40
Installation features
-
Indoor
Noise level
dB(A)
50or less (Ultimate pressure at 1m. With OMT-050A)
Inlet port diameter
-
KF-16(NW-16)
Max. size
mm
120(W)×288.5(L)×163(H)
Leak rate
Pa･m
3
/sec
1×10
-6
IP Class
-
20
Note 1: The ultimate pressure values in the above table are indicated by a Pirani gauge
Note 2: The vacuum pump oil please uses our designated oil turn vacuum pump oil. (designated
oil： R-2)
Note3: If the oil temperature is lower than 7 °C, operation start-up may be difficult. Operation
start-up may be difficult.
