G:\Design\Standard Azanechiller 2.0\01 Design\O & M Manual\Issued\012 Installation Instructions\Azanechiller Installation
Instructions.F.docx Page 6 of 8
6.0 Safety Precautions
6.1 General Hazards
This chiller contains ammonia (R717) which is a toxic gas and is potentially
explosive. Maintenance and service work must only be carried out by trained
personnel who hold the appropriate ammonia handling certificate.
Site personnel should be informed of the chiller location and that it contains
ammonia. If a person suspects an ammonia leak, they should highlight this as
per site procedures and site emergency response plan.
The mains power supply must correspond to the specifications indicted on the
control panel door.
The unit must be destined solely for the use for which it was designed. The
manufacturer shall not be under any obligations whatsoever for uses differing
from the specified use.
Pressure relief line must be installed pointing upwards, away from building air
intakes and with a suitable rubber pipe guard or other means of determining
valve has lifted.
Switch off the unit in the event of a breakdown or faulty operation.
Do not supply the heat exchangers with any liquids except water, glycol or an
approved alternative. Never exceed the maximum allowable pressure of the
secondary fluid circuit indicated on the Diagram of Connections (section 11 of this
manual).
The machine packaging can be dangerous. Keep out of the reach of children.
The operator or other un-trained staff must limit him/herself to the controls of the
unit only; the only panel that can be opened by him/her is the one that accesses
the PLC Human Machine Interface (HMI) –no other must be touched.
Do not use your hands to check possible pressure leaks.
Always use tools that are in good condition; ensure familiarity with the
instructions before putting them into practice.
All tools, electrical cables or loose objects must be removed before closing and
starting the unit again.
The machine must not be installed in an explosive atmosphere.
The machine must not be installed in environments with electromagnetic fields
exceeding those envisaged by the Electromagnetic Compatibility Directive
89/339.
The door should not be allowed to swing free in windy conditions or if the chiller is
operating.
6.2 Control System Hazards
Make sure that the instructions have been fully understood before carrying out
any work on the control panel.
Start the unit only after having made sure that the power supply cable has been
perfectly connected to the chiller’s electrical panel and tested.
Do not reset the manual reset alarms without first having identified and removed
the cause.
