GEA Grasso VHS Series User manual

Reciprocating compressors for industrial
refrigeration
GEA Grasso VHS
Installation and Maintenance instructions (Original text)
P-NL-094_imm_VHS_English_13

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 58
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
Descriptio Grasso V 700HS .. V 1800HS Remark
General Limits of
Operation
Caution!
Refer to Section 4.3, 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
Max. discharge
temperature 170 °C
Min. suction pressure 0.3 bar(a)
Max. intermediate
pressure
Max. suction pressure
7 bar (a)
Pdischarge - Psuction ≤ 19.0 bar (g)
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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