MULTIFUNCTIONAL UNITS RLC – Installation and maintenance manual
MUMRLCHEAT_REV01_1012_UK
Pag. 14 di 31
6
Control of compressor fastening
The compressors are fitted on shock absorbers. After receiving the unit check if there are blockages to fasten the compressors during the
transportation. If there are, it is necessary to remove blockages put to fasten the compressors feets before the start-up otherwise the
warranty is not valid.
7
Electrical Connections
7.1
Electrical power supply
The mains power supply characteristics have to match the unit’s absorption. The mains power supply tension must correspond to the
nominal value ± 10%, with a maximum difference between the phases of 3%.
7.2
Power connections
Protect the unit electric box power supply circuit with protection devices (not included in the supplied equipment)
Connect the line terminals with a three-core cable of a section, which is appropriate to the machine absorption.
The switch and the fuses like all the power connections must comply with the regulations in force.
7.3
Unbalance between the supply tension phases
Do not run the electrical motors when the voltage unbalance between the phases is more than 3%.
Use the following formula to check:
100
*
average
voltage
average
from
deviation
e
Max voltag
ent
unbalancem
Voltage
%
Important
If the mains voltage has an unbalance of above 3%, contact the company, which distributes the electrical energy. If the unit functions with
a unit voltage unbalance between the phases of above 3% the guarantee is invalid.
Maximum allowable tolerance ot unbalance between the phases 2%
Maximum allowable tolerance on power supply 5%
The electrical data refer to the standard units, depending on the accessories or versions required data may vary.
Check that the electrical equipment of the machine are compatible with the information in the technical bulletins or with the data on the
nameplate of the unit '.
