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Safety Precautions
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Symbol description
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Dear user,
For the better understanding of this Manual and the proper operation of the chiller, the marks and
symbols used in this Manual are described as follows:
WARNING: it is likely to cause death, serious injury and other severe accidents if the
user fails to do as required.
CAUTION: it is possible for severe accident to occur
Installation and maintenance must be carried out by professionals experienced in this type of unit in
accordance with applicable local codes and rules on installation and maintenance. We are not liable for
any unit damage or casualty due to non-conformance with this requirement.
The power supply must be switched off prior to maintenance and relocation of the unit; otherwise,
personal injury or death may be caused by electric shock. Do not touch such hot components as
compressor and exhaust pipe directly.
When the water system contains water, control the startup and shutdown of the water pump via the
water pump output point on the unit controller; otherwise, the anti-freezing protection of the unit will not
work, causing the freezing crack to the heat exchanger. If the unit is to idle for a long time in winter, drain
the water from the water system via the drain valve to prevent the freezing crack of the heat exchanger,
the water pipe and other parts on water side. Furthermore, the water pump shall be power off to avoid
starting up against frost without water.
To prevent the heat exchanger on water side from being frozen due to foreign matters entered, a
self-contained water filter must be installed on the water return pipe of the unit (specific installation
position is shown in water system diagram).
Dregs and dirt in the water pipe network including filter and heat exchanger may seriously damage the
heat exchanger and water pipe. Installers and users must ensure the quality of chilled water, not use
anti-icing mixtures containing salt and prevent the entry of air into the water system, because the salt
and air can oxidize and corrode steel parts inside the heat exchanger.
When the unit is installed, it must be protected against wind and earthquakes as required. Otherwise,
accidents such as dumping or falling of the unit may occur.
The fixed foundation must have sufficient bearing capacity when the unit is installed. The base of the unit
must be fixed on a solid foundation to prevent the unit from sinking or causing injury due to insufficient
strength.
Before repairing and transferring the machine, the power must be cut off, otherwise the electric shock
will cause injury and death. Do not directly touch high temperature components such as compressors
and exhaust pipes.
The installer and the user must ensure the quality of the chilled water. It is forbidden to use the salt
anti-icing mixture and no air is allowed to enter the water system.
The unit is forbidden to be installed in places such as toilet exhaust, hospital operating room exhaust,
sewer treatment equipment, etc., where there is much dirt, oil, salt, and a large amount of sulfurized gas,
which will cause corrosion of the unit components.
It is forbidden to use refrigerant or refrigerant oil other than those specified by the model. Failure to do so
may result in damage to the unit, resulting in a fire or explosion.
WARNING
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