• Only genuine YORK approved spare parts, oils, solutions, chemicals, and refrigerants must be
used.
• All of the scheduled maintenance operations detailed in this manual must be performed at the
specified times by suitably trained and qualified personnel.
Failure to satisfy any of these conditions will automatically void the warranty. Refer to Limited
Warranty (Form 50.05-NM2) for complete details.
Quality assurance
Units comply with the following directives:
• GB/T 18431-2014 Steam and Hot Water Lithium Bromide Absorption Chiller
• UL 1995 2011 Ed.4 + R: 03Oct2014 Standard for Safety Heating and Cooling Equipment
• UL 508A Industrial Control Panel
• NFPA70 National Electrical Code
• NFPA79 Electrical Standard for Industry Machine
• Pressure vessel will follow ASME
The unit must be grounded. No installation or maintenance work should be attempted on the
electrical equipment without first switching the power off, then isolating and locking-off the power
supply. Servicing and maintenance on live equipment must not be attempted. Do not attempt to
gain access to the control panel or electrical enclosures during normal operation of the unit.
Components may also have sharp edges. Reasonable care should be taken when working in contact
with any components to avoid risk of minor abrasions and lacerations.
Emergency shutdown
In case of emergency, the control panel is fitted with an incoming supply circuit breaker with a red
handle as shown below, which can be used as the emergency stop for the device. Turn the handle
counter clockwise to shut down the chiller.
High temperature and pressure cleaning
High temperature and pressure cleaning methods (e.g. steam cleaning) should not be used on any
part of the pressure system as this may cause operation of the pressure relief devices. Detergents
and solvents, which may cause corrosion, should also be avoided.
9YHAU-C Single Effect Steam-Fired Absorption Chiller
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