Filtration; Properties Of Water; Air Bubbles; Chemicals - Danfoss PAHT C Installation, Operation And Maintenance Manual

Operation guide | Installation, Operation and Maintenance Manual for PAHT C 2-6.3 pumps
4.

Arrival inspection,

transportation,
handling, lifting and
storage
8

3.7 Filtration

(10µm absolute [β ≥ 5000])
10
Requirements are specified in appendix 1, Data
sheet and appendix 2, Instruction .
Danfoss recommends not to build a filter bypass
function or use filters with an integrated bypass .
If the above recommendation is not followed the
warranty for the pump will automatically
become void .
It should be possible to monitor the condition of
the filter via the differential/delta pressure across
the filter .
Using insufficient filtration or a filter bypass
can cause a failure or decreased service life of
the pump.

3.8 Properties of water

It is recommended NOT to use the pump for
other media than specified in the Data sheet .
4.1 Arrival inspection
The pump is packed in a cardboard or wood box
with plugs in the port connections to protect the
pump from damage during transportation .
When the shipment has arrived it is important to
check the pump for any damages . The name
plate/type designation must be in accordance
with the delivery note and your order .
In case of damage and/or missing parts, a report
should be documented and presented to the
carrier at once .

4.2 Warning

Before any lifting operation is performed,
environmental conditions must be taken into
consideration (Ex-rated areas, wind speed, wet/
dry conditions, lifting height, etc . ) .

4.3 General safety information

Personnel involved in lifting and transporting the
equipment (see Safety, chapter 2) must be
trained in handling and safety procedures when
lifting heavy loads . Many of the pumps and
pump units weigh more than 20 kilos, which
requires lifting slings and suitable lifting devices;
e .g . an overhead crane or industrial truck to be
used as minimum .
180R9316 | AQ176586503002en-000501 | IOM PAHT C 2-6.3 pumps | 01.2022

3.9 Air bubbles

Large bubbles in a pressurised system can result
in damage to piping, equipment and the pump .
All air must be bleeded from both the low-
pressure and high-pressure side before the
system is pressurised . Special consideration
should be given in order to minimize air bubbles
in the feed flow . Air bubbles can cause cavitation .

3.10 Chemicals

The pumps should not be exposed to any
chemicals that can result in damage to piping,
equipment and internal parts of the pump .

4.4 Transport and handling

Small pumps which have a weight below 20 kilos
(weight can be found in appendix 1, Data sheet)
can be handled by hand if they are not mounted
together with an electric motor . The weight of a
small pump with a motor will be above 20 kilos .