Safety Precautions - Haier CA0035EAND Installation And Operation Manua

Safety Precautions

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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.
No unit is allowed to be installed near such places that are dirty, oily, salty, exposed to a large amount of
sulfur gas and where the unit parts may be subjected to corrosion, such as toilet vent, operation room
vent and sewage treatment equipment.
If the unit is operated below 0℃, it must be installed at a place at least 300 mm above the ground, so as
to avoid icing of unit base plate and to ensure the normal operation of the unit even though the snow
reaches this height; in addition, the unit shall be placed on a plane (with maximum deviation per meter of
not more than 2 mm).
WARNING
CAUTION
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