Never place combustible materials around the motor or pump. There is a risk of fire. Also, do not
place objects that block ventilation around the motor. Abnormal heat generation may result in
burns.
Do not operate the pump in hazardous area (where there is a risk of creating hazardous
atmosphere by explosive gas). It might cause injury and fire.
Any non-professional person shall be restricted from disassembling, repairing or modifying the
product. It might cause a fire, be injured, or pump trouble.
Be sure there is no debris or powder and lots of condensed gas generated or accreted in system,
the pump will be damaged because of oil being deteriorated.
You should check the oil level regularly.
Do not operate the pump without pump oil or in an oil-less condition, the pump will be damaged.
Ambient temperature for operation should be 5 to 40°C . When the pump is installed in a closed
system, be sure the ambient temperature not more than 40°C .
It is imperative to put the overload protection device. Otherwise it would cause the motor burn
out and/or fire.
L1 L2 L3: Three-phase ac power supply QS: Air switch
FU1: Fuse / Circuit breaker KM1: Contactor FR: Thermal relay
U1 V1 W1: The motor terminal M3～: Three-phase ac motor
* Each protection device must comply with EU standard and certified by EU authorities
Fig.1 Motor wiring diagram（example）
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