Servicing The Product; Maintaining The Product; Replacing The Battery - Grundfos AQtap Service Instructions With Installation And Operating Instructions

10. Servicing the product

DANGER
ELECTRIC SHOCK
If the electrical mains connection is damaged, it must
be replaced by Grundfos, a Grundfos service partner
or a similarly qualified specialist, in order to avoid a
hazard.
All servicing work must be carried out by authorised
and qualified staff.
Shut down the whole system before any work at the
system components and lines!
Switch off the power supply, both grid and solar,
before carrying out servicing work or opening the
cabinet.
Safety installations, which have been disabled during
servicing, must be enabled again immediately after
servicing.

10.1 Maintaining the product

10.1.1 Maintenance requirements
To maintain the AQtap water dispenser, the service menu must be
run and the cabinet must be opened. Requirements for
maintenance are:
• ServiceCard
• 1 unique key and 1 standard cabinet key
• torque wrench
• adjustable spanner
10.1.2 Maintenance schedule
All steps to be carried out for maintenance are described in the
following sections 10.1.3 Check the service situation,
10.1.4 Check the outside of the AQtap cabinet, 10.1.5 Check the
inside of the AQtap cabinet and 10.1.6 Cleaning tank and
strainer.
• Maintain the AQtap according to these instructions:
– At least every 6 months.
– The strainer must be cleaned more often. If the water
contains particles, adjust the cleaning schedule accordingly.
– In the event of a fault.
• Replace the internal battery if it is worn out.
• If defective parts are detected, have the AQtap serviced by a
Grundfos SSP (sales and service partner).
– For available spare parts, see section 13.4 AQtap spare
parts (service kits)
• The solenoid valve should be cleaned by a Grundfos SSP:
– At least every 12 months.
– In the event of a fault.
10.1.3 Check the service situation
• Carry out a SAT (site acceptance test) by means of the service
menu / ServiceCard, see section 5.2 Service menu.
• In case of displayed alarms or warnings carry out a restart,
see section 11.2 Restarting the AQtap and repeat the SAT.
• Carry out a performance test, see section 5.3 Performance
test.
• Check that the solenoid valve closes/opens easily, and does
not drip.
– Start/stop tapping water and check that the water outlet is
not dripping.
10.1.4 Check the outside of the AQtap cabinet
• Make a general and visual inspection of the dispenser's good
condition.
• Verify that power and other external cables are in good
condition and not damaged.
• Verify that the locks are operable and that the dispenser
cannot be opened without the keys.
• Verify that the cable glands are closed tightly.
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10.1.5 Check the inside of the AQtap cabinet
• If a battery is connected, make sure that the wires and
connections are in a good condition and the poles are not
corroded.
• Verify that the fastening of the dispenser is not loose.
• Verify the good condition of the antenna and the related cable
and the tightness of the installation. (Max. 5 Nm)
• Verify the good condition of the power cable and other external
cables.
• Make sure that the cable glands are closed tightly.
• Close the cabinet and lock it with the keys.
10.1.6 Cleaning tank and strainer
• If a tank is used for water supply, empty and clean the tank in
order to avoid sediment entering the AQtap.
• Clean the strainer filter to make sure that the water can flow
without difficulties:
1. Close the shut-off valve.
2. Unscrew and remove the end cap from the strainer.
3. Take out the filter and clean it from particles.
4. Reinstall the filter.
5. Screw the end cap onto the strainer.
6. Open the shut-off valve.
7. Tap an amount of water until the AQtap is deaerated.
8. Check that the connections are tight.
– Torque:
– Strainer: 30 ±3Nm
– Plastic fitting: 10 ±1Nm

10.2 Replacing the battery

The battery in the kit is supplied charged. As soon as
Caution
it is connected there is power on the AQtap.
Caution
Do not short-circuit the two poles of the batteries.
If you connect a discharged battery, it can take up to
12 hours until the AQtap can be operated, even if it is
Note
connected to power supply.
The waste battery must be disposed of according to
Note
local regulations!
1. Close the shut-off valve.
2. Switch off the power supply, both grid and solar.
3. Open the cabinet.
4. Disconnect the battery at both poles.
5. Unscrew and remove the screw in the battery clamp.
6. Lift and remove the battery clamp.
7. Take out the old battery and dispose of it according to local
regulations, see section 14. Disposing of the product.
8. Place the new battery with the minus (-) pole on the left side.
9. Mount the battery clamp and fix it with the screw.
10. Connect the red cable to the plus (+) pole on the right side.
11. Connect the blue cable to the minus (-) pole on the left side.
12. Close the cabinet and lock it with the keys.
13. Open the shut-off valve.
14. Switch on the power supply.