Commissioning and Maintenance
60 © robatherm
Attention
Pump may only be operated if the sump is sufficiently filled.
Check pump direction of rotation, if it is incorrect swap electrical connections.
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Dry Running Protection
Set dry running protection. The pump must switch off when the water level drops below
20 mm over the suction line, otherwise pull floating switch cables in or out as required.
Ball Valve
Check ball valve. At a maximum water level 10 to 20 mm below the overflow connector the
fresh water supply must switch off.
Adjustability
For adjustable humidifiers the pump must switch off at a nozzle pressure of less than
0.3 bar. Setting of control valve or frequency converter as per manufacturer’s operating
instructions.
Shut Down
The humidifier must be switched off automatically as soon as the AHU is switched off or fails.
Leak Testing
Test external piping for leakage, tighten if necessary.
Brand new eliminator profiles do not reach their full elimination capacity until approx 3
operating days have passed (weathering effect).
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Hygiene Control
Sedimentation device: Adjust rated value for conductivity in accordance with manufacturer’s
operating instructions (see page 58).
HYGIENECONTROL: Setting of the cleaning interval (see page 58) and value limit of the
conductivity control.
Disinfection
UV rays (with self-controlling UV selective sensors) may be appropriate for continuous
disinfection.
Only use chemical disinfection agents (biocides) if their harmlessness to health in the
application concentration is proven.
Following commissioning the germ count of recirculating water should be checked on a
weekly basis for a while. If necessary the setting values of the hygiene control may be
adjusted.
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Caution
Increased quantities of germs can cause infections or allergic reactions.
If germ counts are over the recommended limits, clean or service system immediately. If in
doubt or if germ counts again rise rapidly, you are recommended to have examination and
advice from a qualified body.
If the results are below limits (see page 58), then see maintenance.
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