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AIR BOOSTER 2
EN/10.2018/IT30I © STULZ SpA – all rights reserved
• Once the system is working at full power:
1. Check that no alarms have occurred;
2. Check that the fans work properly;
3. Check, while the unit is running, that the supply voltage remains within the values indicated on
the technical name-plate;
4. Check that the unit works according to the set logic.
8.3. Switching off
To switch off the unit, turn off all the power supplies.
DANGER
The ON-OFF button on the display is only used to put the unit on stand-by. It must therefore not
be considered as a safety device for switching off the unit prior to maintenance operations.
9. Maintenance
9.1. Safety instructions
Installation and intervention on units must be made in full compliance with specific national
regulations for accident prevention, with particular reference on electric and refrigerant equipment.
Failure to comply with these regulations might be dangerous to people and environment.
Before any intervention on the unit, refer to instructions on this manual, check data on the name-
plate and take any other precaution in order to guarantee optimal safety.
Safety procedures
DANGER
Cut off the power supply to the unit before making any maintenance operation. A “DO NOT
SWITCH ON” warning sign must be clearly visible. ON-OFF key on the unit is only used to put the
unit in stand-by.
Live electric components have to be switched to de-energized and checked to ensure that they
are in the de-energized state.
Some verifications must be effected with the unit in operation (measuring current, pressures,
temperatures). In such a case, the unit must only be switched on at the master switch after all
mechanical connections have been carried out. The unit must be switched off immediately after
the measuring procedure.
The electric box might be hot.
Maintenance operations may only be performed by authorised and qualified technicians.
