Pahlen Aqua-Mex Manuel D'utilisation page 14

Aqua-Mex
Bleeding of the circulation pump (only for Aqua-Mex FE)
1. Switch off the pump. Do not touch it – risk of burn injuries.
2. Shut off the pipe in the pressure circuit.
3. Slowly open the air screw with a screwdriver (watch out for hot water).
Remove the air screw entirely. See figure 11.
4. Carefully press back the pump shaft several times with the screwdriver.
5. Protect all electrical components from any water that emerges.
6. Start the pump. WARNING – owing to operating pressure the pump
may be blocked when the air screw is open.
7. After 15-30 seconds, tighten the air screw.
8. Open the shut-off valve in the pressure circuit.
Shutting off (only for Aqua-Mex FE)
When the Aqua-Mex FE is shut off via the on/off button, "OFF" will first flash in the display for about 5 seconds, after which a
small dot will light up to indicate that the unit still has a current supply.
Troubleshooting
Fault Cause - action
Heat exchanger pump Check the fuses in the electrical control box.
does not start Check the voltage (see data on the rating plate).
(only for Aqua-Mex FE) Check that the Aqua-Mex FE is being supplied with current (a dot is showing in the display).
Check that the Aqua-Mex FE is switched on (on/off button).
Check the secondary circuit's flow. The flow switch cuts out when secondary circuit flow is less than
90 litres/min.
Set a higher temperature.
Check that the motor is not blocked by built-up deposits. Undo the air screw entirely and check the
rotor's free movement with a screwdriver.
Noise in the pump Cavitation noise owing to low static inflow pressure. Increase the pressure if possible, otherwise
select a higher power output setting on the circulation pump (only for Aqua-Mex FE).
Insufficient heating Air in the system – the system/circulation pump needs to be bled.
Select a higher power output setting on the circulation pump (only for Aqua-Mex FE).
Insufficient secondary circuit flow, see the table entitled "Performance".
Temperature of the primary circuit's water not high enough – check the heating source, insulate the
primary piping more effectively.
Check that the heat exchanger is installed such that the primary and secondary circuits operate in
opposite directions.
Flow noise Lower the speed by turning down the circulation pump to a lower gear (only for Aqua-Mex FE).
There´s heating The primary heat source may provide self-circulation over Aqua-Mex due to the pressure differential
despite the primary difference between the inlet and return.
circulation pump
being shut off (Aqua-
Mex FE only)
Error codes
E1 = flow switch, circulation pump
E2 = pool temperature sensor
HI = pool temperature above +45ºC
Follow the recommendations below for pool water:
Chlorine content: max 3 mg/l (ppm)
pH rating: 7.2-7.6
Alkalinity: 60-120 mg/l (ppm)
Chloride (salt) content: max 250 mg/l (0.025%) g stainless acid-proof steel version
above 250 mg/l (0.025%) g for the titanium version
Calcium hardness: 100-300 mg/l (ppm)
Figure 11.
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