National Lab OCGE 111 Operating And Maintenance Manual Download

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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 provi-
sions 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 precau-

tions 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 progress

’

. 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.

PCGE series:

Water with ethylene glycol added as anti-freeze, where necessary. If glycol is used, the mini-

mum limit of 20% and maximum limit of 25% should be observed.

OCGE series:

Lubricating or hydraulic oil with a viscosity of 10 cST or higher with a temperature limit vary-

ing according to the oil type.

PCGEZ series:

Water with ethylene glycol added as anti-freeze with a minimum of 20% and a maximum of

25% applying to chillers with a standard configuration.

The maximum operating conditions (temperature of the cooling medium and room temperature) and the permissi-
ble 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 draining 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 nebu-

lized water. The use of water in large quantities must be avoided because if there is leakage of refrigerant, the re-
sulting chemical reaction