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Specifications
Specification list
Specification list
(V,B, or VB enters into the □)
Model ※1 KRF70-□ KRF70-□H KRF110-□
Designed capacity L/min 1130 / 1350 1850 / 2200
Speed ※2 rpm 930 / 1110 940 / 1120
Ultimate vacuum kPa 90 or more
Continuous operative (V) kPa 60 or less 80 or less 60 or less
Continuous exhaust (B) kPa 60 or less 70 or less 60 or less
Continuous operative (VB) kPa
Total of vacuum level
and exhaust pressure:
60kPa or lower
Total of vacuum level
and exhaust pressure:
80kPa or lower
Total of vacuum level and
exhaust pressure:
60kPa or lower
Diameter of piping connection Rc1 Rc1-1/4
Power supply
※2, ※3, ※4
Three-phase
200V spec
Hz
200V-50/60, 220V-60
Three-phase
400V spec
380V-50, 400V-50/60, 415V-50, 440V-60, 460V-60
Motor
Three-phase
200V spec
kW 2.2（6P） 3.7（6P）
Three-phase
400V spec
Rated current
※2
Three-phase
200V spec
A
10.4/9.6 (200V-50/60Hz)
9.2 (220V-60Hz)
16.2/15.6 (200V-50/60Hz)
14.6 (220V- 60Hz)
Three-phase
400V spec
5.4 (380V-50Hz)
5.2/4.8 (400V-50/60Hz)
5.2 (415V-50Hz)
4.6 (440V-60Hz)
4.5 (460V-50Hz)
8.2 (380V-50Hz)
8.1/7.8 (400V-50/60Hz)
7.9 (415V-50Hz)
7.3 (440V-60Hz)
7.1 (460V-50Hz)
Mass ※2
Three-phase
200V spec
kg 75 120
Three-phase
400V spec
Operation noise
Three-phase
※
2
（Ｖ）
dB
67/68 73/74 74/75
（Ｂ） 74/76 76/77
Applicable
environment
Installation site Indoor
Permissible ambient
temperature
0 to 40 deg.C
Suction air ※5
"Normal temperature：0 to 40 deg.C , Normal humidity：65±20％ (JIS Z 8703)
Conditions where there is no corrosive and explosive gas exist.
Clean air without vapor and dew condensation, and less dirt and dust."
Altitude of installation
1000m or less
Pollution Degree Pollution Degree 3 (Worse environment than normal environment)
Overvoltage classification ※6 Classification 3 (supply from the fixed wiring facility)
※1 Only three-phase specification is complied with CE marking.
※2 Values shown are with our standard motor.
※3 Allowable intermittent power supply voltage fluctuation range is ±10% of the specified voltage; allowable
sustained supply voltage fluctuation range is ±5% of the specified voltage.
※4 Voltage specifications for motors other than our standard ones are according to power supply
specifications specifications shown on the motor name plates.
※5 Consult with your dealer if the product is used in extremely low humidity for adjustment. It may cause the
malfunction of pump.
※6 Refer to IEC664-1.
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