ZUWA Impeller Pumps
11
Caution
Material damage due to overheating of engine
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Ensure sufficient space and air supply for the motor.
6.1 Connection of hoses or pipes
Observe correct direction of rotation of pump,
indicated by an arrow on the type plate and the lettering
In
–
Out.
Affix hoses as follows:
1.
Screw suction line onto the side marked “In”.
2.
Screw pressure line onto the side marked “Out”.
3. Verify that the connections are leaktight.
6.2 Electrical connection
6.2.1 Series 2000-A, 2000-B und 2000-C
Danger
Danger of death due to electric shock
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Fit the pump’s electric circuit with a ground fault circuit interrupter.
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Fit a motor overload switch.
230 Volt motors:
Thermal protection is fitted. Fitting of a motor overload switch is advisable.
400 Volt motors:
No thermal protection is fitted. Fitting of a motor overload switch is required (available
as accessory)
Direct current motors:
Protection against overcurrent by means of safety fuses:
12 Volt motors: 80-A
24 Volt motors: 50-A
The pump can be fitted vertically or horizontally. In case of vertical fitting, it
is advantageous to direct the pump head downwards, so that in case of
leaking the motor is protected against escaping liquid.
Hoses or lines must be suitable for the respective pumped medium.
Avoid long suction lines.
In the case of a suction height of more than 3 metres, fit foot valve in the
suction line in order to prevent drainage of the pump and suction line.
