Part 3: Electrical Connection; Safety Precautions - York 21RT-47RT Installation, Operation And Maintenance Manual

Water-cooled chiller

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Table Of Contents

Table of Contents

3.1 Safety Precautions

It is earnestly requested to be strictly observe the various safety-related important matters listed in the "Safety

Precautions".

Symbols Used in This Manual

Warning: The warning must be observed to avoid physical injury to the user.

Caution: The warning must be observed to avoid damage to parts.

Caution: Please read this manual and various labels posted on units and components carefully

Warning: Only use the accessories designated by our company and request the installation and technical services

from manufacturers or authorized dealers. The improper installation of control accessories may result in controller failure

or electric shock. Users must not attempt to repair by themselves. The improper controller repair may result in electric

shock or damage. Please contact the manufacturer if there is any repair need by the user.

Warning: Ground wire must be installed for unit power supply and set controller. Do not connect the ground

wire of the unit power supply to the ground wires of gas fuel pipe, water pipe, lightning conductor or telephone. The

improper grounding may cause an electric shock accident. Please check frequently whether the grounding wire is firmly

connected to the grounding terminal and grounding electrode of the unit.

Warning: As there is strong current in the control cabinet, do not touch other control elements and terminal

components except the control panel before cutting off the power supply of the unit, so as to avoid personal injury.

Caution: The strong and weak electric wires shall be separated for wiring of the unit, so as not to affect the

communication and operation of the unit.

Caution: The user wiring must avoid the high-temperature pipe of the unit or the high-temperature casing of the

compressor, etc., so as to avoid damage to the lead.

Caution: The wire controller must be installed firmly. Otherwise, it may cause body injury or damage to the

controller due to the drop

Warning: Do not use sharp objects to operate keys, so as to avoid damage to controller. Do not twist or pull the wires

in the control cabinet to avoid loose wiring and control Fault. Do not wipe the controller or control element with benzene,

diluent or chemical reagent, otherwise it may cause discoloration or mechanical Fault. To remove dirt, first immerse the cloth

in water containing neutral detergent, wipe after wringing out the water, and then wipe clean the controller or control element

with a dry cloth. Do not apply excessive force to the display or joints, so as not to cause tonal variation.

Warning: User's power supply incoming wire and other wiring of the unit shall be sealed, in order to ensure that

its electric cabinet body's protection level is not lower than IP54. The excessively low protection level may result in the

entry of moist air or dust, which may accelerate the invalidation of the functions of the low-pressure device in the box, or

even the burning.

Warning: Except for the period of maintenance, the door of the control box must be closed to prevent the

entering of the water

Warning: When the control box is in maintenance, it is necessary to ensure that the rainwater cannot enter the

box body

Warning: For the unit's wire incoming, it adopts the mode of line pipe. It is necessary to ensure that the water

cannot enter the line pipe, otherwise it is necessary to disconnect the pipe before entering the unit, in order to drain the

water off

Warning: Before the wire incoming, the unit is required to have certain margin and cannot be too tight, in order

to prevent the wire from being pulled loose when the unit is in operation.

Cooke Industries - Phone: +64 9 579 2185