Installation And Commissioning; General; Fitting; Commissioning - Homa C239 WE2 Manuel D'instructions Original

5. Installation and commissioning

5.1. General

The following points must be noted to prevent damages
in the pump during installation and commissioning:
• The installation work must be carried out by qualified
personnel in compliance with the safety regulations.
• The pump must be checked for possible damages
prior to installation.
• The minimum submersion in water must be
considered for level control.
• Air pockets in the pump casing and in pipes must be
avoided (by means of appropriate venting facilities or
slight tilting of the pump).
• Protect the pump from frost.
• The mechanical room must be designed for the re-
spective machinery. This includes also that a lifting
device for assembly/disassembly can be installed,
with which the installation site of the pump can be
reached without danger.
• The power lines of the pump must run in a way that
hazard-free operation and easy assembly/disassem-
bly is possible.
• The power line must be fixed professionally in the
mechanical room so that loose hanging of the leads
is prevented. Depending on the length and weight of
the leads a cable holder must be fitted every two to
three metres.

5.2. Fitting

Danger of falls!
When mounting the pump and its accessories work
is carried out directly at the edge of the basin! Care-
lessness or wrong footwear can lead to falls. There
is danger to life!
Take all safety measures to prevent this.
Fix the pressure pipe or the hose on the pressure branch
of the pump and lay the pressure pipe. When using a
hose connection or pipe connection with thread the hose
connector at the branch of the pump can be cut off. The
pressure pipe should have a minimum diameter of 3/4"
to ensure optimal conveyor performance. Additionally, a
swing non-return flap can be mounted in the pressure
pipe to prevent backward running of the water when the
pump is switched off. The pressure pipe must be mount-
ed without tension.
When using the hose it must be ensured that this is laid
our without bends. When using accessories, such as a
quick coupling, or similar, it has to be ensured that these
are sealed with teflon tape, since leakage reduces the
conveyor performance of the pump.
The run time of the pump is 4 minutes.
It is essential to make sure that the pump is installed
at a safe distance from electrical connections, as the
stream of water from the vent may otherwise cause
an electric shock/short-circuit! Danger to life!
Extraction height
The pump C239WE2 can extract up to a height of 9 mm.
26 | EngliSH
Installation of a non-return flap
The pumps are used as emergency pumps in most ap-
plications and are therefore only very rarely brought into
operation. Therefore, the pump is not equipped with a
non-return flap by default. The reason for this is the possi-
ble functional impairment of the pump under certain con-
ditions. If a very long time (months or years) has passed
since its last operation, dirt may have accumulated on the
non-return flap water column (of which the most recently
extracted surface water may have contained significant
amounts) and from there may have been deposited on
the non-return flap where it prevents the valve from open-
ing. This is especially applicable since the pump must be
completely ventilated after a longer standstill time during
each initial startup.
The disadvantage of installation without a non-return flap
is that the water running back out of the line and the re-
maining residual water must be removed (wiped up or
removed with a wet vacuum). Thus, in most cases, the
possible failure of the pump in an emergency is preferred.
A non-return flap should therefore only be installed in
pumps with applications involving frequent operation
(at least 1 x per week).

5.3. Commissioning

This chapter contains all important instructions for oper-
ating personnel for safe commissioning and operation of
the machinery. The following must be complied with and
checked:
• Type of installation
• Operation mode
• Minimal submersion in water / maximum submersion
depth
After a longer downtime these points must also be
checked and detected defaults must be repaired!
The operation and maintenance
always be kept with the machinery, or in a dedicated
place where it is accessible for the entire operating
personnel.
The following points must be taken into account to avoid
personal and material damage when
troubleshooting machinery failures:
The commissioning of the machinery must only be
carried out by qualified and trained personnel in com-
pliance with the safety regulations.
• All personnel that is working on the machinery must
have received, read and understood the operating
instructions.
• Activate all safety equipment and emergency
switch-offs before commissioning.
• Electrotechnical and mechanical settings must only
be carried out by specialists.
• This machinery is only suitable for the use under the
indicated operating conditions.
manual must