Preparatory Work; Electrical System; Motor Protection; Switch-On Types - Homa C239 WE2 Manuel D'instructions Original

5.4. Preparatory work

The machinery was constructed and fitted according to
the latest technology, so that it works for a long time and
reliably under normal operating conditions.
This requires however that you comply with all require-
ments and informations. Small oil leakages of the floating
ring seals on delivery are not problematic, but they must
be removed before lowering/immersion into the medium.
Please check the following points:
• Cable run - no loops, slightly tightened
• Check temperature of the medium and submersion
depth - see machinery data sheet
• If a tube is used for pressure, this must be rinsed with
clear water so that no deposits lead to obstruction.
• The pump pit must be cleaned for wet installation
• The pressure-sided and suction-sided pipework
system must be cleaned and all gate valves must be
opened
• The pump casing must be flooded, e.g. it must be
filled completely with the medium and it must not
contain an air. The de-aeration can be carried out by
means of suitable venting devices in the system or, if
available, by air-vent screws on the pressure socket.
• Check accessories, pipework, suspension devices for
firm and correct fitting
• Check available level controls/protection against dry
run

5.5. Electrical system

The respective local and VDE regulations must be com-
plied with when choosing and installing the electrical
leads as well as connecting the motor.
Electric shock hazard!
Faulty dealing with current may jeopardize your life!
All pumps with free cable ends must be connected by
a qualified electrician.

5.6. Motor protection

Single phase motor
Pumps with 230 V/single phase motors are provided with
an operation capacitor on delivery.

5.7. Switch-on types

Switch-on types with plug
Insert the plug into the socket provided for.
Adjustable float switch for Type C239 WE2
The pumps are equipped with an integrated float switch.
You can switch the pump on by moving the switch at the
side of the pump upwards. The pump begins to pump di-
rectly. In order to switch on to automatic operation, push
the switch downwards. The pump will then switch itself
on at a water level of approx. 12cm
5.7.1. After switching on
The rated current is surpassed quickly during the start-up
process. After termination of this process the work current
should not exceed the rated current. If the motor does not
start immediately after switch-on, it must be switched off
immediately. Before further switch-on the switch pauses
according to the technical data must be complied with.
In the event of a further interference the machine must
be switched off immediately. A further switch-on process
may only be started after recovery of the fault.
The following points should be checked:
• operating voltage (permitted deviation +/- 5% of the
rated voltage)
• Frequency (permitted deviation -2% of the rated
frequency)
• Power input (permitted deviation between the
phases maximum 5%)
• Voltage difference between the individual phases
(maximum 1%)
• Switching frequency and pauses (see technical data)
• Minimum submersion in water, level control,
protection against dry run
• Smooth run
• Check for leakages, if appropriate take the neces-
sary steps according the chapter 'maintenance'
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