Use Of Chains; Start-Up; Preparation Work; Electrical System - Homa H 500 Serie Originalbetriebsanleitung

When using separate floats for start of the pump, stop of the pump and alarm, the switch levels have to be chosen
as described above. The alarm float should switch approximately 10 cm above the switch point of the pump,
however always below the input.
Important: After each change of the mounting of the float, a correct function of the float switch must be checked
with a test run.

5.3. Use of chains

Chains are used to lower/lift a pump into/out of the mechanical room. They are not designed for securing a
floating 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 ensure a steady position of the pump.

Remove the chain from the lifting device and safeguard 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. Start-Up

This chapter includes all important instructions for the operating personnel for the safe commissioning and
operation 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 personnel.
The following points must be taken into account to avoid personal and material damage when troubleshooting
machinery failures:
Troubleshooting machinery 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
instructions.

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 indicated 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. This requires, however, that you comply with all requirements 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 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 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 devices 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 complied 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 direction 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.
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