omi CHW 09 Bedienungs- Und Wartungsanleitung Seite 4

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DANGER – HOT SURFACES/HIGH TEMPERATURE OF COOLING MEDIUM:
Danger of burns due to high temperatures in the hot parts of the chiller
and/or the cooling media it contains!
DANGER – MOVING PARTS:
Danger of injuries due to contact with the moving parts of the chiller!
DANGER – EYE INJURIES:
Danger of eye injuries resulting from the use of compressed air or from fluid particles during
cleaning work!
All work connected with the installation, operation and maintenance of the chiller must be performed in
accordance with the instructions contained in the operating and maintenance manual and in compliance
with the legal provisions that apply in the country where the device is installed. All cleaning/maintenance
work that requires access to the chiller has to be performed by qualified specialist personnel who have
been informed of the necessary precautions to be taken. Read the operating and maintenance manual
carefully before performing any work on the device. The chiller has been designed and manufactured in
such as way as to comply with the standards that apply in the respective country. Should the chiller be
used for the incorrect purpose or not in accordance with the operating and maintenance manual, the
manufacturer cannot be held responsible.
THE FOLLOWING POINTS MUST BE OBSERVED BEFORE COMMISSIONING AND WHILE OPERATING THE
CHILLER:
Familiarize yourself with all the operating controls.

The chiller may be used solely for the intended purpose.

Make sure that all the working limits indicated in the operating and maintenance manual are

observed.
Use protective devices to check electrical insulation. Do not carry out any work on any parts

of the equipment that might be live with wet clothing, hands or feet.
Check at regular intervals whether the safety and control devices of the chiller are functioning

properly.
Never hit the pipes located on the inside of the chiller with objects of any kind.

 Any maintenance operations not mentioned in the operating and maintenance manual must
not be carried out by personnel without the manufacturer's prior written authorization if any
equipment components are under pressure.
Never spill or pour any cooling medium into the environment as this may cause damage to

health. Before the chiller is resold, the cooling medium must be drained from the chiller using
suitable equipment. Please contact customer service of the nearest dealer in this connection.
The side panels of the chiller must not be removed unless this is absolutely necessary. Even if

the side panels are only partially removed, isolate the chiller from the electricity supply and
affix a sign to the control panel bearing the warning "Maintenance work on chiller in pro-
gress". Replace the side panels as quickly as possible.
 The components of the chiller must not be modified in any way.
Bypassing the electrical protective devices may result in overloading of the chiller.

The chillers are exclusively designed for cooling the types of cooling medium listed in the following table.
Water with ethylene glycol added as anti-freeze, where necessary. If glycol is used,
CHW series:
the minimum limit of 20% and maximum limit of 25% should be observed.
Lubricating or hydraulic oil with a viscosity of 10 cST or higher with a temperature
CHO series:
limit varying according to the oil type.
Water with ethylene glycol added as anti-freeze with a minimum of 20% and a maxi-
CHG series:
mum of 25% applying to chillers with a standard configuration.
The maximum operating conditions (temperature of the cooling medium and room temperature) and the
permissible features for the cooling medium are contained in Section 5 of this manual.
When handling liquids intended for a special purpose, e.g. health or food applications, please
check the contractually defined technical specifications. Cooling medium with a high content of
solid matter may not be used with these chillers.
Possible risks:
CAUTION: The chiller is equipped with a main switch.
The authorized installation technician must ensure that the chiller has been connected to the
electricity mains in accordance with the standard EN 60204 and must ensure compliance with all
other applicable national standards.
Fire:
According to European Standard EN 378-2, these chillers may be equipped with a safety valve for drain-
ing cooling medium.
The electricity supply must be disconnected in the event of fire. Fire extinguishers or fire extinguishing
systems filled with powder, foam or carbon dioxide should be used by preference. The chiller may also be
cooled with nebulized water. The use of water in large quantities must be avoided because if there is
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25/05/2010