Brivis 25
Evap AC IM
13. BRIVIS AD TIMING & COOLER FUNCTIONS
13.1 START-UP - BRIVIS AD MODEL STANDARD
These Coolers are not pre-programmed to automatically saturate the filter pads when the pump is turned ON,
therefore no Pre-Wet will occur where a manual wall control is fitted.
13.2 START-UP - BRIVIS AD MODEL WITH DUMP VALVE
The Cooler has been pre-programmed to automatically saturate the filter pads when the pump is turned ON (Pre-
Wet). The cooler will delay this Pre-Wet operation for a period of 4 minutes to allow the tank to fill with water (Fill-
Time)� This delay will only occur where the pump has been OFF for longer than 45 minutes�
13.3 PRE-WET
Pre-wet is the process of running the pump and wetting the pads without the fan operating, ensuring full pad
saturation and optimum cooling potential when the fan starts�
Pump OFF Time
Pre-wet Time
•
Less than 10
minutes
Pre-Wet 1 minute
•
Longer than 10
minutes
Pre-Wet 4 minutes
•
Longer than 45
minutes (Dump
Model Only)
Tank has to be filled.
Therefore, total time
including Pre-Wet
is 8 minutes�
13.4 PROGRAMMABLE WALL CONTROL MODELS IN AUTO MODE
These models operate similar to Brivis Networker and Manual wall control models but in auto mode the Pre-wet
operates slightly differently.
If the Cooler has been OFF for longer than 15 minutes it will begin with a 2 minute Pre-wet, then turn OFF the
pump and start the fan�
Depending on the room conditions and the wall control setting the Cooler may perform another Pre-Wet (as
described above) when the pump is turned ON again, forcing the fan to turn OFF for that period�
13.5 SHUT-DOWN TIMES (DUMP VALVE)
When the Cooler is turned OFF at the end of use the controls are programmed to wait 45 minutes before draining
the tank�
Summary of Contents for AD BAL AD56
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