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10.2.7. Installation of the lifting pump
If the end of the discharge tube is below the level of the lifting pump, there is a risk of siphoning from the pump, which
may lead to failure through repeated dry running. To avoid this, it is therefore necessary to install the anti-siphoning
device supplied in the condensate pump kit.
The anti-siphoning device ensures that a sufficient water column is maintained in the pump's discharge tube when the
pump stops. It should be installed higher than the pump, either vertically or horizontally, taking care to orientate it
according to the following recommendations:
Recommendations for installing the anti-siphoning device
10.2.8. Operational test
Following the installation of the pump and its accessories, a test procedure is obligatory in order to check the that the
pump works properly and to avoid possible inconveniences.
Stage
Explanations
1
Clean the condensate tray of any debris (assembly residues, manufacturing residues, packaging residues, etc.) to
prevent premature wear of the pumping system, clogging of the level detection chamber and clogging of the
pump.
2
Gently pour water into the condensate tray using a bottle.
3
Check that the pump starts and stops properly to drain the spilled water.
If too much is spilled, the overfill protection may be triggered and the regulator may be cut off. It will be necessary
to wait for the level to drop before allowing the regulator to be powered again.
10.2.9. Diagnosis
If you have any problems, please check the following beforehand:
■
The pump's suction and discharge tubes must not be pinched or obstructed
■
The float inside the pump must not be blocked
■
The pump's suction and discharge connections must not be blocked
Symptoms
Causes and remedies
The pump does not work, regardless of the water
level in the tank
Check the pump's power supply and wiring
The pump runs continuously without a stop phase
and sucks little or no condensate
Check that the discharge height does not exceed the maximum permitted
height. Check that the suction tube is airtight and that no air is entering.
Replace the pump if necessary.
The pump continuously cycles on and off
Stop the pump and check that the water column in the discharge tube does
not fall. If it does fall, replace the pump.
Other unauthorised orientations
Zehnder Eversky
