Obligations Of The User; Obligations Of The Certified Service Staff; Symbols Used In This Document; Symbols On The System - Grundfos AQpure Installation And Operating Instructions Manual

1.2.3 Obligations of the user

• Read this manual thoroughly before putting the system into
operation.
• Observe the recognised health and safety regulations as well
as the accident prevention regulations.
• Wear protective equipment in accordance with national health
and safety regulations when working on the system and
handling chemicals.

1.2.4 Obligations of the certified service staff

• Read this manual thoroughly before putting the system into
operation.
• Observe the recognised health and safety regulations as well
as the accident prevention regulations.
• Wear protective equipment in accordance with national health
and safety regulations when working on the system and
handling chemicals.
• Perform installation and commissioning in accordance with the
knowledge and documents received during the training at
Grundfos.
• Train the users in performing the user relevant maintenance
tasks mentioned in this document.
• Parameterise the system according to on-site requirements
during commissioning.
• Fill in the commissioning protocol. Have it signed by the
operating company and keep it available for later reference.
Hand over a copy to the operating company.
• Set the scheduled maintenance date according to local
operating conditions and perform advanced maintenance on
request of the operating company.

1.3 Symbols used in this document

Warning
If these safety instructions are not observed, it may
result in personal injury.
Warning
If these instructions are not observed, it may lead to
electric shock with consequent risk of serious
personal injury or death.
Warning
The surface of the product may be so hot that it may
cause burns or personal injury.
If these safety instructions are not observed, it may
Caution
result in malfunction or damage to the equipment.
Notes or instructions that make the job easier and
Note
ensure safe operation.

1.4 Symbols on the system

Symbol Description
This symbol indicates a danger of electric shock.
This symbol indicates a danger of burns or personal
injury from hot surface.
All signs and symbols on the system must be observed and
maintained legible.
Also observe the manuals for built-in components in the
documentation package.
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1.5 Glossary

Term Explanation
Special step in the backwash process, where
Air scouring air bubbles are sent through the UF membrane
to loosen the fouling.
Concentrate is the part of the water in a cross-
Concentrate flow filtration that is not passing the
membrane. Normally, this water is circulating.
Cross-flow filtration means that a part of the
Cross-flow water flows along the feed water side of the
membrane.
Dead-end filtration means that the whole water
Dead-end
is going through the membrane.
Feed water is the water entering the
Feed
membrane for filtration.
Filtrate is the filtered water that has passed the
Filtrate
membrane.
The flux rate is the filtrate volume flow per m
Flux rate
membrane surface area.
Gradual reduction in filtrate flow at constant
pressure (or increase in TMP at constant
Fouling filtrate flow) due to adsorption or deposition of
contaminants within or on the membrane. It
can be biological, particular, colloidal, organic.
As permeability varies in correlation to the
water temperature, it needs to be normalised
Normalised
to compare the performance over a certain
permeability
time period. This is done with the help of a
temperature correction factor (mostly 20 °C).
This term describes the flow direction of the
water through the membrane. In this case, the
Outside-In
feed water flows from the outside of the hollow
fibre to the inner side.
The permeability is the flux rate in relation to
the trans-membrane pressure. With the
Permeability
permeability, the performance of a membrane
or a membrane system can be evaluated.
The recovery of an ultrafiltration process is the
ratio of filtrate flow that can actually be used
for consumption to the total raw water flow.
Recovery The more often a backwash is carried out, the
lower the recovery is. If the filtration is done
with cross-flow, this amount of water must also
be calculated - if it is not circulated.
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