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8. Maintenance
8.1 Maintenance intervals
The preventive maintenance intervals recommended in this
section are for average operating conditions. The maintenance
tasks must be performed more frequently where the operating
conditions are unfavourable, for example extreme water demand,
unexpected changes in the raw water quality (contamination, rain
season, etc.). During commissioning, the certified service staff
has to train the users in the different basic maintenance tasks.
The certified service staff has to determine the recommended
maintenance intervals for the specific system based on the
environmental conditions.
8.1.1 Scheduled maintenance date
The certified service staff sets a scheduled maintenance date in
the service menu of the HMI after commissioning and after each
advanced maintenance. Grundfos provides a maintenance tool
supporting the certified service staff in finding the right interval for
the individual conditions.
The system displays a daily warning at the HMI a few days before
the set maintenance date reminding the user to contact certified
service staff for performance of advanced maintenance. The
number of days can be set individually by the certified service
staff via the parameter file. Once the set maintenance date is
reached or exceeded, a daily warning is displayed with a
frequency of a few hours reminding the user that advanced
maintenance is due.
Details can be found in the separate HMI manual, which is
supplied to certified service staff only.
8.3 Basic maintenance schedule
The basic preventive maintenance activities expected to be carried out by the user are described in the following table, in order to keep
the system free from troubles and to avoid unexpected breakdowns.
The position references in the table refer to the PID. See fig.: 6.
Interval
Module
Whole AQpure
Daily
system
Whole AQpure
system
Air scouring
Solar package
Chlorination
Whole AQpure
Weekly
system
UV disinfection
Task
Perform a visual inspection. Check the presence of warnings or alarms, water
leaks, abnormal noise or vibrations.
Visually inspect strainers (11) and (27). Clean, if necessary.
Clean the strainers (11) and (27).
Check that there is no water in the transparent hose (14e).
Clean the solar panels in order to obtain the maximum efficiency.
Check sodium hypochlorite solution level and conditions in chemical tank (21).
Refill chemical tank (21), if necessary.
If necessary, clean all system surfaces with a dry and clean cloth.
Check the feed water supply.
Check the UV intensity value displayed at the UV controller. The UV controller can
be found at the lower back side of the AQpure control cabinet. Actions should be
taken according to the displayed value:
• > 65 %: No action required.
• 65-50 %:Clean the quartz sleeve and the sensor of UV system (45) soon.
• < 50 %: An alarm is displayed and the system is stopped. Clean the quartz
sleeve and the sensor of UV system (45).
8.2 Safety instructions and requirements
Warning
Cleaning and maintenance must only be carried out
by authorised and qualified staff.
Wear the stipulated personal protective equipment
(protective clothing, gloves, goggles, etc.)!
Observe the chemical manufacturer's safety data
sheets (MSDS) and safety instructions of the used
chemicals!
Safety installations, which have been disabled during
maintenance, must be enabled again immediately
after maintenance.
Warning
Danger of electric shock!
Water or any other liquids on electrical components
can lead to personal injury from electric shock.
Furthermore, damage to the equipment can be
caused due to short circuits.
Keep all electrical components dry!
Cover electrical components during maintenance
with a water-tight foil!
Before reassembling make sure, that all parts are
Caution
clean, dry and undamaged!
Warning
Death or serious injury
Danger of malfunction or damage to the product.
The AQpure system must be earthed with an earth
cable.
Equipotential bonding is installed between all
interfaces and metallic parts to prevent build-up of
static electricity.
All equipotential bonding and earthing must be
reinstalled properly after repair or maintenance.
See section
8.10
8.10
Fig. 9
8.12
8.8
8.9
8.13
33
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