OSTROV OA331 User manual

06.2018
Operating Instructions
CONDENSING UNITS
OA331

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Table of contents
Introduction 3
1 Terms and definitions 3
2 General information 3
3 Areas of responsibility 5
3.1 Manufacturer’s responsibilities 5
3.2 System installer’s responsibilities 5
3.3 Owner or operator responsibilities 6
4 General information on safety requirements 6
4.1 Safety of the refrigeration system 7
4.2 Safety signs 7
4.3 Personnel requirements 7
4.4 Hazards, hazardous situations and hazardous events 7
4.5 Personal protective equipment 7
5 Packaging 10
6 Storage 10
7 Transportation 11
8 Placement 12
9 Mounting 12
9.1 Unpacking 12
9.2 Check the factory pressure 13
9.3 Installation 14
9.4 Connection of pipelines of refrigerant circuit 15
9.5 Connection of pipelines of chilled water loop 15
9.6 Electrical connection 17
10 Commissioning 17
10.1 Connection to the circuit of the refrigeration system 18
10.2 Tightness test pressure 18
10.3 Vaccum procedure 18
10.4 Charge by a refrigerant 18
10.5 Changing the chilled water loop 19
10.6 Start up 19
10.7 Check after the unit is operational 20

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11 Operation 21
12 Shutdown 21
13 Maintenance 21
14 Decommissioning for a prolonged period 22
15 Decommissioning and disposal 23
16 Declaration of conformity 23
Appendix 1. Requirements for heat transfer fluids for chilled water loop 24

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Introduction
These operating instructions contain important information
on installation, use and maintenance of OSTROV OA331
condensing units (hereinafter referred to as the units).
Please read the instructions carefully before operating the
equipment and keep them in the unit’s immediate vicinity
during its entire lifetime.
Observance of these instructions helps in avoiding dangers,
reducing repair costs and down-times and increasing the
reliability and durability of the unit.
Ignoring the information given in these instructions can put
the warranty rights at risk.
The instructions cannot cover every installation, use or
service situation. If you need more detailed information,
contact us directly.
In addition to these instructions, refer to the manufacturer
documentation for the individual components of the unit.
Osrtov reserves the right to modify its products as it deems
necessary without altering their main characteristics.
Specifications are subject to change without notice.
All names referred to are registered trademarks of their
respective owners.
Ostrov assumes no responsibility for any errors and
misprints that these operating instructions may contain.

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1 Terms and definitions
The following definitions are used in these operating
instructions:
«Manufacturer» means the legal person who has designed
and manufactured the unit.
«System installer» means a legal person who installs and
commissions the unit.
«Owner» means a legal person who owns, uses and
disposes of the unit.
«Operator» means a legal person who operates and
maintains the unit.
«Condensing unit» means a combination of one or more
compressors, condensers, liquid receivers (when required)
and the regularly furnished accessories.
«Refrigerating system» means a combination of
interconnected refrigerant-containing parts constituting one
closed refrigerant circuit in which the refrigerant is circulated
for the purpose of extracting and rejecting heat.
«Refrigerant» means a fluid used for heat transfer in
a refrigerating system, which absorbs heat at a low
temperature and a low pressure and rejects heat at a higher
temperature and a higher pressure usually involving changes
of the state of the fluid.
«Сhilled water loop» means a closed loop inside which the
heat transfer fluid circulates, to cool the condenser.
«Heat transfer fluid» means a liquid used in the heat
transfer process.
2 General Information
OSTROV OA331 condensing units (hereinafter referred to
as the units) are completely factory-assembled and built in
compliance with current international and national standards
in the specific field of refrigeration systems.
These units have a protective housing made of galvanized
powder-coated steel and are intended for indoor installation.
They are equipped with a hermetic piston compressor.
The unit is equipped with a high-eciency plate water
cooled condenser.
The units are used as part of refrigeration systems for
technological processes and conditioning in industrial plants,
equipping storage and freezing rooms, manufacturing food
products and in trade organizations.
The refrigerant circuit of each unit is tested for strength
and leaks. Before delivery, the circuit is charged with dry
nitrogen up to excess pressure.
The units must be operated only within the limits specified
on the identification plate as well as in these operating
instructions. If they are used under other operating
conditions, the manufacturer does not guarantee their
eciency.
The identification plate of the unit contains the following
information:
• trademark, name, location and phone number of the
manufacturer;
• model of condensing unit;
• code;
• serial number;
• power supply (voltage / frequency / maximum current);
• net weight;
• refrigerant;
• maximum allowable pressure;
• test pressure (strength);
• maximum and minimum ambient temperature;
• country of origin;
• date of production (month and year).