GEA Grasso VHS Series Bedienungsanleitung

Reciprocating compressors for industrial

refrigeration

GEA Grasso VHS

Installation and Maintenance instructions (Original text)

P-NL-094_imm_VHS_English_13

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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