Use, Operation, Control; Use In Explosive Atmospheres, Installation Zones 1 And; Important Information For The Operator; Prerequisite For Switching On - GEA Grasso M-Series Operating Manual

Operating Manual | GEA Grasso M-Series
Screw Compressor Packages
9

USE, OPERATION, CONTROL

9.1 Use in explosive atmospheres,
installation zones 1 and 2
Danger!
The same regulations apply to the
operating instructions for screw com-
pressor packages in potentially explo-
sive atmospheres as described in the
respective applicable operating man-
ual.
In addition to this, the following exten-
sions apply:
1. In addition, the legal safety regula-
tions apply for the people respon-
sible for operating the screw com-
pressor package, and must be con-
formed with respect to the trans-
port, assembly, operation and
maintenance and if necessary the
replacement of sub-assemblies,
etc. in potentially explosive atmos-
pheres.
The operator directives must be
complied with in this context – see
also section: Safety instructions
for compressor, Appendix E and
Screw compressor package,
Appendix E. Both documents are
an integral part of the documenta-
tion.
2. The relevant electrical engineering
regulations for installations in
potentially explosive atmospheres,
especially EN 60079-10, apply to
the installation and connection of
electrical components. Appropri-
ate, prescribed cabling material
must be used.
3. The entire screw compressor pack-
age must be earthed by the opera-
tor.
GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015
9.2 Important information for the opera-
tor
The screw compressor package must be only be
operated by trained and qualified personnel who are
familiar with the contents of the operating manual for
GEA Refrigeration Germany GmbH screw compres-
sor packages.
The safety regulations for refrigeration plants must
always be observed in order to prevent damage to
the screw compressor package and injury to the
operating staff.
Hint!
The screw compressor package is
operated via the control panel of the
control unit. If the control is included
in the scope of delivery, the operating
staff must be familiar with the contents
of the complete documentation of the
control unit. The documentation for
the control unit is an integral part of
the product documentation.
9.3

Prerequisite for switching on

The screw compressor package has been designed
for automatic operation; the control unit controls the
switching on and off of the compressor and its
capacity adjustment.
Continuous operation and observation of the screw
compressor package is not necessary in automatic
mode. The necessary steps for switching on the
screw compressor package can be found in the con-
troller documentation.
If the screw compressor package is controlled man-
ually, it must be operated from the refrigerator room.
In particular, the repair and maintenance instructions
must be complied with.
The following prerequisites must be fulfilled for
switching on the screw compressor package:
1. The main power must be available and switched
on.
2. The screw compressor package must be suffi-
ciently filled with refrigerant and oil.
3. The valves must be in the operating position.
4. The oil level in the oil separator must be within
the permissible range.
Use, operation, control
65