Use Of Chains; Commissioning; Preparation Work; Electrical System - Homa H 500 Originalbetriebsanleitung

5.3. Use of chains

Chains are used to lower/lift a pump into/out of the me-
chanical room. They are not designed for securing a float-
ing pump.
For use according the instructions follow these steps:
• Fix one end of the chain to the provided eyelet/the
handle of the pump.
• Fix the other end on the lifting device.
• Tighten the chain and lift the pump slowly and in a
controlled manner.
• Swing the pump subsequently over the mechanical
room and lower it carefully.
• Lower the pump as far as the operation point and en-
sure a steady position of the pump.
• Remove the chain from the lifting device and safe-
guard this on the chain guard, which is at the upper
edge of the mechanical room. This ensures that the
chain cannot fall into the mechanical room and does
not pose danger to anyone.

5.4. Commissioning

This chapter includes all important instructions for the op-
erating personnel for the safe commissioning and opera-
tion of the machine.
The following information must absolutely 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 manual must always
be kept with the machinery, or in a dedicated place
where it is accessible for the entire operating person-
nel.
The following points must be taken into account to avoid
personal and material damage when troubleshooting ma-
chinery failures:
• The commissioning of the machinery must only
be carried out by qualified and trained personnel
in compliance with the safety regulations.
• All personnel working on the machinery must have
received, read and understood the operating instruc-
tions.
• Activate all safety equipment and emergency switch-
offs before commissioning.
• Electro-technical and mechanical settings must only
be carried out by specialists.
• This machinery is only suitable for use under the indi-
cated operating conditions.

5.5. Preparation 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.
34 | EngliSH
This requires, however, that you comply with all require-
ments and information. Small oil leakages of the floating
ring seals on delivery are not problematic, but they must
be removed before lowering/immersion into the pump
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 prior to use so that no deposits lead
to obstructions.
• The pump pit must be cleaned for wet installation
• The pressure-sided and suction-sided pipework sys-
tem 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 any more air. 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 and suspension devic-
es for firm and correct fitting
• Check available level controls/protection against dry
run

5.6. 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. The motor must
be protected with a circuit breaker. The motor must be
connected according to the wiring diagram. Note the di-
rection of rotation! In the event of the wrong direction of
rotation, the machine does not perform as indicated and it
can become damaged under unfavorable circumstances.
Electric shock hazard! Improper dealing with current
may jeopardize your life! All pumps with free cable
ends must be connected by a qualified electrician.

5.7. Direction of Rotation

No check is required for single phase motors, since these
always run in the correct direction of rotation.
The direction of rotation must be checked in three phase
motors before commissioning. When using HOMA
switchgear with LED for direction of rotation, this con-
trol indicator flashes in the event of wrong direction of
rotation. The check can be carried out by observation of
the start-jerk. To do so, place the pump vertically onto the
floor, slightly on the edge and switch on for a short time.
When seen from above, the pump rebounds slightly anti-
clockwise in the correct direction of rotation.
The direction of rotation is correct if the pump moves an-
ticlockwise, since the motor starts clockwise when seen
from above. Checking the correct direction of rotation
in pumps that are already installed can be carried out by
comparison of the pumping height and the pumping quan-
tity with different directions of rotation.