GEA Grasso 5 Manuel utilisateur
Reciprocating compressors for industrial
refrigeration
GEA Grasso V
Installation and Maintenance instructions (Original text)
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COPYRIGHT
All Rights reserved. No part of this publication may be copied or published by
means of printing, photocopying, microfilm or otherwise without prior written
consent of GEA.
This restriction also applies to the corresponding drawings and diagrams.
LEGAL NOTICE
This publication has been written in good faith. However, GEA cannot be held
responsible, neither for any errors occurring in this publication nor for their
consequences.
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SYMBOLS USED
Danger
Stands for an immediate danger leading to severe physical injuries or death.
► Description for avoiding the danger.
Warning!
Stands for a potentially dangerous situation leading to severe physical
injuries or death.
► Description for avoiding the dangerous situation.
Caution!
Stands for a potentially dangerous situation which could lead to minor
physical injuries or damage to property.
► Description for avoiding the dangerous situation.
Notice
Stands for important information that must be observed for the intended use
and function of the product.
► Description of the required action for the intended function of the product.
SAFETY INSTRUCTIONS
Hint!
This manual must be careful read and understood prior to installing
and servicing the compressor (package)
Safety
This manual is written with great care, but the contractor/installer is held
responsible to examine this information and to take care of possible additional
and/ or deviated safety measures.
Safety instructions
It is the task of the contractor/installer to inform and explain to his client the
operation of the compressor (Package).
Do respect all federal, state or local safety regulations/legislations during
installing, connecting and operating this compressor (package).
Construction changes
Warning!
In compliance with the regulations of the Pressure Equipment
Directive it is mandatory that no changes be made to the construction
of pressurised parts such as the crankcase housing, suction filter
housing etc.
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Installer oriented information
The compressor (package) is filled with nitrogen to prevent penetration of
moisture. Therefore, keep the compressor closed until the compressor (package)
is being installed.
Never store the compressor filled with compressed air. Compressed air contains
moisture that will corrode the inside and working components of the compressor.
To store the compressor, fill it with dry nitrogen after fully evacuating it.
Warning!
The compressor, oil filters, oil lines, etcetera, are not filled with oil.
Pre-lubrication is obligatory. Refer Section 4.7, Page 61
Hint!
After the successful initial run of the compressor (package) the
warranty chart must be filled in and returned to Grasso. A warranty
chart is attached to each compressor.
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PREFACE
General
1. All documentation can be downloaded via our web site.
2. GEA technical manuals includes “generic paragraphs”; this means that it can
occur that not all data as described is relevant for the current compressor
series as mentioned in this manual. (For instance, not all compressor series
are suitable for all mentioned refrigerants or not all compressor series
includes two-stage compressors)
Directives
Equipment is based on Pressure Equipment Directive (PED 2014/68/EU)
regulations and according to Machine Directive (MD 2006/42/EG) regulations.
The applied standards are:
NEN-EN-IEC 60204, NEN-EN-ISO 12100, NEN-EN-ISO 13857, NEN-EN 378
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CYLINDER NUMBERING, BOOSTER AND SINGLE-STAGE OPERATION
Cylinder numbering
Fig.1: Example cylinder numbering 6 cylinder compressor
Booster or single-stage operation
1. Booster operation applies if condensing temperature < +5 oC
2. Single-stage operation applies if condensing temperature >= +5 oC
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GENERAL INFO
Main setup data
Description
Value
Remark
Grasso V 300 (T) .. V 600 (T) Grasso V 700 (T) .. V 1800 (T)
General limits of operation
Caution!
Refer to Product Information Section 4.2, Page 51
Start frequency max. 6 starts per hour
The NO-solenoid has to be
de-energised 20 seconds
after starting the compressor
motor to enabel the motor to
reach the minimum speed and
the compressor to develop the
required oil pressure.
Time interval between stopping
and re-starting min. 2 minutes
Time interval between starting
and re-starting min. 10 minutes
Time interval between loading
and unloading min. 3 minutes
For continuous minimum part-
load (i.e. more than 30
minutes) consult Grasso.
Adjust the steps between up
and down loading, in such a
way that the system is running
stable.
Oil level 25-75% crankcase sight glass
Control oil pressure suction pressure + 8 bar (g)
Lubricating oil pressure
difference between 1.3 and 4.5 bar Setting approx. 2.0 bar (g)
After a mimimum of 15 minutes
running time at an oil
temperature of approx. 50 oC
Superheat >0 K
Oil discharge - running in -
filter
Factory mounted; to be replaced after max. 100 running hours by “normal” oil discharge filter
element
Oil discharge filter Supplied loose; replacement for factory mounted running in filter
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