Considerations On The Exchangers Care; Start-Up Report; Preliminary Information - Carrier Acqua Junior 30AJ Manual De Instalación, Operación Y Mantenimiento

9. Considerations on the exchangers care

In order to prevent damages to the exchangers that can make the warranty void, some preventive care must be
adopted:
• Protection against water fl ow shortage. (Flow Switch)
• Interlocking of the pump and safety systems to cause the machine to stop in case of any failure in the
water circulation system.
• Water circulation before the compressor start-up.
• Evacuation of the water circuit in winter, or in low temperature periods.
• In locations where the temperatures decrease to below 0°C, use glycol to evacuate the system.
• Periodic checking of the good operation of the safety system.
• Installation of a "Y" fi lter, mesh 20, to protect them against obstructions.
• Use of a condensation control in machines that operate in intermediate seasons.
• Use of the proper rate of Glycol when operating at a leaving water temperature below 4.5°C.
• Minimum water volume in the system: 12 l./ton. for air conditioning applications and 24 l/ton. for
process applications.
• Installation of an accumulator tank in case it does not meet the minimum requirements of water volumes
(Refer to Carrier Air Conditioning Manual, Third Part).
• The solutions must be prevented: Chlorines > 300mg/l, Chlorine-free sulphite, solutions with PH < 7.
• The water circuit shall count on an expansion tank or a device to prevent the pressure surges in
the piping.
Do not remove any protective device from the unit.

10. Start-up report

a) Preliminary information
Customer:
Installation Site: ______________________________________________________________________________
Installer: ____________________________________________________________________________________
Distributor: __________________________________________________________________________________
Start-up performed by:__________________________ Date: __________________________________________
Equipment: _________________________________________________________________________________
Liquid chiller model:____________________ Serial number: __________________________________________
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