Preparatory Work; Electrical; Direction Of Rotation; Motor Protection - Homa CH150 WA Original Instruction Manual

In order to prevent damage to property or injury to per-
sons while starting up the machine, the following points
are absolutely to be complied with:
The machine may only be started up by persons qual-
ified to do so and in compliance with the safety notes.
• All personnel who work on the machine must have
received, read and understood the operating instruc-
tions.
• This machine is suitable for use under the stated op-
erating conditions only.

5.4. Preparatory work

The machine has been designed, constructed and assem-
bled in accordance with the state of the art so that, under
normal operating conditions, it will give long and reliable
service. It is a prerequisite for this, however, that all re-
quirements and instructions be complied with.
Please check the following points:
• Cable routeing – no loops, slightly under tension
• Check the temperature of the conveyed medium and
the immersion depth
• If a hose is used on the pressure side, it is to be
rinsed with clear water before use, so that no depos-
its can cause blockages
• In a wet well installation, the pump sump is to be
cleaned
• The piping system on the pressure and the suction
side is to be cleaned and all valves are to be opened
• The pump housing must be flooded, i.e. it must be
completely filled with the medium, and there must
be no more air in it. Venting can be done with suitable
venting devices in the plant or with venting screws at
the discharge outlet, if present.
• Check accessories, piping system and suspension ar-
rangement for secure and correct seating

5.5. Electrical

The selection and laying of electrical lines and the connec-
tion of the motor must comply with the appropriate local
and VDE regulations. The motor must be protected with a
motor protection switch.
Danger due to electrical current. Handling electricity
improperly involves mortal danger.

5.6. Direction of rotation

No check is necessary for 1ph motors, since these always
run in the correct direction of rotation.

5.7. Motor protection

Single-phase motor
Pumps with 230 V/single-phase motors are equipped with
a capacitor in the cover of the motor housing.
24 | ENGLISH
5.8. Switch-on methods
Switch-on methods with plug
Insert plug into the designated socket. Pump starts up im-
mediately. When using a float switch, the pump starts up
as soon as this is triggered.
5.8.1. After switching on
The nominal current is briefly exceeded during the start-
up process. After this process ends, the operating current
should no longer exceed the nominal current. If after be-
ing switched on the motor does not start immediately,
switch it off immediately. Before switching on again, the
switching intervals stated in the technical data must be
observed. If there is another malfunction, the machine
must be switched off again immediately. It must not be
switched on again until the malfunction has been rectified.
The following points should be checked:
• Switching rate and switching intervals (see Technical
data)
• Air drawn in at the intake: a baffle plate must be
attached if necessary
• Minimum water cover,
dry-running protection
• Smooth running
• Check for leakages and, if appropriate, take the nec-
essary steps given in the "Servicing" section
level control system,