en – Original Instructions
ecocirc PRO – Installation, Operation and Maintenance Manual 21
5 Use and Operation
5.1 Precautions
WARNING
Make sure that the discharged liquid cannot cause damage to persons or things.
WARNING: Electrical hazard
Check that the unit is properly connected to the mains power supply.
WARNING: Hot surface hazard
Motor housing may be very hot. Burn hazard. Do not touch.
NOTICE:
Dry run of the unit is prohibited, as this can destroy the bearings in a very short time.
NOTICE:
It is prohibited to operate the unit with the shut-off valve closed.
5.2 Before starting
Before ever starting the pump, verify that:
• The instructions in section
Installation on page 14 have been performed.
• The system has been flushed thoroughly to prevent foreign objects and impurities from
blocking the pump.
• The system has been filled and air purged (see section
Air Purge on page 22).
5.3 First starting
1. Connect the plug to the mains.
• In case of models without potentiometer knob, the pump starts to operate immediately.
• In case of models with potentiometer knob the unit stays idle (Standby mode) or starts to
operate depending on the position of the knob (see
Figure 9 for the different scale layouts).
9
2. With the unit in operation, check that:
• No liquid is leaking from the pipes.
• There is no unwanted noise or vibrations.
• Liquid is actually being pumped.
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