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

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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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