Grasso RC6 Handbuch
RC(U)6
Installation and Maintenance Manual
00.89.238 v004.00.02.en
Refrigeration Division
Grasso
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 Grasso. This restriction
also applies to the corresponding drawings and diagrams.
For extra information as to adjustments, maintenance and repair, contact the Technical
Departmentof your supplier.
This publication has been written with great care. owever, Grasso cannot be held responsible,
neither for any errors occurring in this publication nor for their consequences.
Installation and Maintenance Manual RC(U)6 v001.99.01.en
1. Document Information
•This ’lnstallation and Maintenance manual’ will
be supplied together with the compressor.
•This manual is suitable for both end-user and
contractor and will provide information on how
to transport, install, start-up and maintain the
compressor (package). It also contains a number
of "Engineering Data Sheets" and the current
"Parts List".
2. Additional Documentation
In addition to the above the following is available
for this series compressor:
•Engineering Data Sheets Book;
This book contains all engineering data for this
series compressor and the corresponding
recommended accessories. It is meant to be a
guide to the selection of these components.
•Parts book;
This book contains all current parts of the
compressor and accessories together with the
design changes applicable to earlier supplied
components (" istory").
•Mounting and Installation Instructions for
Accessories;
If compressor is supplied with accessories, all the
relevant mounting and installation instructions
and spare parts information for those
accessories will be supplied together with the
compressor.
Refrigeration Division
Grasso
PREFACE
v001.99.01.en Installation and Maintenance Manual RC(U)6 V
Refrigeration Division
Grasso
PREFACE
VI Installation and Maintenance Manual RC(U)6 v001.99.01.en
This manual must e carefully read and
understood prior to installing the
compressor (package)
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. The compressor is not
filled with oil. ow to charge the compressor
package with oil is discussed in Section A, §A2.3,
"Initial oil charge".
After the succesful 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.
Safety
This manual is written with great care, but the
contractor/installer is held responsible to examine
this information and to care of possible additional
and/ or deviated safety measures.
Safety instructions
It is the task of the contractor/installer to inform
and explain his client about the operation of the
compressor (Package).
Do respect all federal, state or local safety
regulations/legislations during installing,
connecting and operating this compressor
(package).
Typographic signs:
Indicates a caution, note or procedure to
which you should pay special attention.
Read it carefully!
Values Between [ ]
Values between [ ] are read-outs of Grasso’s
electronic control device Monitron.
Refrigeration Division
Grasso
GENERAL SAFETY INSTRUCTIONS
v001.99.01.en Installation and Maintenance Manual RC(U)6 VII
Refrigeration Division
Grasso
GENERAL SAFETY INSTRUCTIONS
VIII Installation and Maintenance Manual RC(U)6 v001.99.01.en
General information
Refrigeration Division
Grasso
Su ject Feature refer to chapter:
Oil viscosity ≥ 10 cSt during operation at location of bearings
Direction of rotation of compressor drive shaft Counterclockwise when facing shaft end A2.6
Operating limits and switch settings
(for values between [ ] brackets refer to the Instruction Manual of the Monitron)
Timers Time interval refer to chapter:
Switching frequency max. 6 starts per hour A2.10.1
Time interval between stopping and re-starting min. 2 minutes A2.10.2
Time interval between starting and re-starting min. 10 minutes A2.10.2
Time interval between unloading and loading min. 3 minutes B1.2
Oil system limits Value
Oil level 25 - 75% crankcase sight glass B4
Min. oil temperature warmer than surroundings and ≥ 20 °C (68 °F)
for N 3 and ≥ 30 °C (86 °F) for halocarbons
A2.8
Max. oil temperature [max. Toil] see oil selection table in the appendix section B1.2
Lubricating oil pressure difference [min dOil] between 1.5 and 2.5 bar
Setting approx. 1.8 bar
A2.5.2
Temperature and pressure limits Value
Max. discharge temperature [max Tdis] 155 °C (311 °F) B1.2
Pdischarge - Psuction < 24.0 bar
Superheat [dTo] ≥ 5 K
Cooling water inlet temperature of cylinder
head cooling system
≥Tcond + 10 K
Pressure safety limits A2.5.2
GENERAL INFORMATION AND SURVEY
OF SETTINGS AND LIMITS
v001.99.01.en Installation and Maintenance Manual RC(U)6 IX
Refrigeration Division
Grasso
GENERAL INFORMATION AND SURVEY
OF SETTINGS AND LIMITS
X Installation and Maintenance Manual RC(U)6 v001.99.01.en
SUBJECT Page no.:
PREFACE ............................................................................................................................... V
GENERAL SAFETY INSTRUCTIONS ................................................................................................. VII
GENERAL INFORMATION AND SURVEY OF SETTINGS AND LIMITS .......................................... IX
SECTION A: INSTALLATION AND PREPARATIONS FOR USE ....................................................... A1.1
A1 INSTALLATION .......................................................................................................................... A1.1
A1.1 Moving instructions and storage ................................................................................. A1.1
A1.1.1 oisting and moving instructions ...................................................................... A1.1
A1.1.2 Storage ............................................................................................................... A1.2
A1.2 Required free space ....................................................................................................... A1.2
A1.3 Foundation requirements .............................................................................................. A1.2
A1.3.1 Concrete structure ............................................................................................. A1.3
A1.3.2 Anchoring ........................................................................................................... A1.4
A1.4 Concrete block mounting instructions .......................................................................... A1.4
A1.4.1 Mounting bare compressor on a concrete block ............................................. A1.4
A1.4.2 Mounting the base frame on a concrete block ................................................ A1.4
A1.5 Connecting to refrigerating system pipework ............................................................. A1.5
A1.6 Connecting the power supply ....................................................................................... A1.6
A1.7 Earthing connections ..................................................................................................... A1.6
A1.8 Separately delivered components.................................................................................. A1.6
A2 PREPARATIONS FOR USE ......................................................................................................... A2.1
A2.1 Leak test of compressor and system ............................................................................. A2.1
A2.2 Evacuation/drying the refrigerating system ................................................................. A2.1
A2.3 Initial oil charge .............................................................................................................. A2.1
A2.4 Initial refrigerant charge ................................................................................................ A2.2
A2.5 Adjustment of instruments and safety devices ............................................................ A2.2
A2.5.1 Monitron ............................................................................................................. A2.2
A2.5.2 Pressure safety switches ..................................................................................... A2.2
A2.5.3 Re-adjustment of oil pressure regulator ........................................................... A2.3
A2.6 Checking direction of rotation of motor shaft ............................................................. A2.4
A2.7 Installing the (drive) guards .......................................................................................... A2.4
A2.8 Initial oil warm-up .......................................................................................................... A2.4
A2.9 Initial start-up ................................................................................................................. A2.4
A2.9.1 Limitations part load operation and start-up.................................................... A2.4
A2.9.2 Pre-start check list .............................................................................................. A2.4
A2.10 Starting and stopping procedures ................................................................................ A2.4
A2.10.1 Starting for the very first time ......................................................................... A2.4
A2.10.2 Restart .............................................................................................................. A2.5
A2.10.3 Starting after a seasonal (1 till 6 months) standstill or maintenance operations A2.5
A2.10.4 Starting after a long standstill periode of time (more than 6 months) ........ A2.5
A2.10.5 Stopping the compressor ................................................................................. A2.5
SECTION B: INSPECTION, MAINTENANCE AND TROUBLE SHOOTING: .Table of contents ....... B.I
SECTION C: APPENDIX <Instructions & collection of data sheets>: .......Table of contents ...... C.I
SECTION D: STANDARD ILLUSTRATED SPARE PARTS LIST: ....................Table of contents ....... D.I
For oil selection ta le refer to "Engineering Data"
Refrigeration Division
Grasso
TABLE OF CONTENTS
v001.99.01.en Installation and Maintenance Manual RC(U)6 III
Refrigeration Division
Grasso
TABLE OF CONTENTS
IV Installation and Maintenance Manual RC(U)6 v001.99.01.en
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1
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