User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 2-12.5 pumps
3.7 Filtration
(10µm absolute [β
10
≥ 5000])
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 .
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. Arrival inspection, transportation, handling, lifting and storage
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 .
4.4 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 .
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 .
180R9287 / IOM PAHT /PAHT G 2-12.5 pumps - v01 / 06.2013
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User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 2-12.5 pumps
Pumps which have a weight above 20 kilos (see appendix 1, Data sheet) must be handled by using lifting eyes and slings .
Wrong lifting:
10
Never use only one sling and make sure the slings does not slip off the pump .
When the pump is mounted together with an electric motor, the pump unit always weigh more than 20 kilos and must be handled by using slings around the pump unit .
See below examples of where to/not to attach the lifting slings on the pump unit:
Correct lifting with 2 separate slings:
When lifting the pump unit, one sling must be attached to the electric motor and one sling around the pump .
Only some motors and pumps have specific lifting eyes .
Do not use connections/nozzles for lifting!
Do not use only one sling!
Make sure that the unit/load is balanced before lifting . The centre of the mass varies from pump/ pump unit size to pump/pump unit .
How to mount the pump and the electric motor correctly, see appendix 1, Data sheet or appendix
2, Instruction .
Incorrect lifting can result in personal injury and/or damage to the pump unit, see appendix
2, Instruction.
4.5 Return to supplier
Please see maintenance chapter 7 .
4.6 Storage
Each pump is tested before shipment, and will therefore contain water . For storage temperature and frost protection see appendix 2, Instruction .
The pumps are NOT delivered frost protected from the factory.
180R9287 / IOM PAHT /PAHT G 2-12.5 pumps - v01 / 06.2013
