WDT Operating instructions GRANUDOS 10 (V61-08/05) page 15 of 20
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4.3
Irritations not indicated by monitoring switches
1.
No chlorine dosing: no free chlorine in pool water
By using the test program chlorine on facsia no dosing
-
dosing screw blocked
-
dosing screw loose
-
dosing nozzle (heated) faulty or blocked
-
dosing motor faulty
If dosing works by using the test program see to auto-controller for free chlorine whether the
output is correct
2.
No acid dosing: pH in pool water is high, suction tube/mixing chamber is turbid.
If acid container is not empty, no fault indication at the fascia: check dosing function of acid pump
use test program for acid. If pump runs, see whether an air bubble is sucked to pump, if not
examine the pump roller and pump hose. If all is OK, increase dosing rate and choose lower set
point for pH
3.
Continuous dosing of chlorine or acid on program “auto” without command from the
auto-controller: Check whether the output from the auto-controller is correct – no voltage from
there. If so, the 130 volt relay of the GRANUDOS input is faulty. Replace the relay or mount a
new power plate.
4.
Overflow from tank too much at switch off of GRANUDOS
-
switch bobbin of flow switch is blocked on top situation or does not fall down completely
-
joint of switch bobbin faulty
-
diaphragm of the floating valve faulty
-
piston of floating valve is blocked by impurities (sand if diaphragm is faulty)
-
supply pressure of an external booster pump too high
-
set in spring-loaded check valve in ell of floating valve. Please make sure that because of
pressure drop you will need a pressure of at least 0,4 bar
