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Cleanliness:
Condensing units and evaporator coils are cleaned and dehydrated at the factory. The
condensing unit must remain closed and pressurized until the piping is complete and
final connections are ready to be made.
CAUTION
The maximum air exposure for dehydrated condensing units is 15 minutes. Systems
exposed longer than 15 minutes must have the compressor oil and drier filter replaced.
Leaving a system exposed to the atmosphere for more than 15 minutes can result in
premature system failure.
MISE EN GARDE
L’exposition maximale à l’air des groupes compresseurs-condenseurs
déshydratés est de 15 minutes. L’huile du compresseur et le filtre du
dessiccateur doivent être remplacés sur les systèmes qui ont été exposés à
l’air pendant plus de 15 minutes. L’exposition d’un système à l’atmosphère
pendant plus de 15 minutes peut avoir pour résultat une défaillance
prématurée du système.
Do not remove base mount valve covers until work is ready to be performed. Ensure
that all refrigeration tubing is clean and dry prior to installation. Use only tubing cutters
when trimming tubing to the proper length. Do not use saws to cut tubing.
CAUTION
The use of saws to cut tubing can contaminate the system with copper chips causing
premature system failure.
MISE EN GARDE
L’utilisation de scies pour couper le tubage peut contaminer le système par
des copeaux de cuivre et causer une défaillance prématurée du système.
Brazing joints require a dry inert gas, typically nitrogen, be passed through the lines at a
low pressure to prevent scaling and oxidation. Use only silver solder brazing alloys.
Minimize the amount of flux to prevent internal contamination. Flux only the male
portion of the joint. Thoroughly clean fluxed joints after brazing.
CAUTION
Dry inert gas must be passed through the system while brazing to prevent scaling and
oxidation. Scaling and oxides can clog refrigeration components resulting in system
failure.
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