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C. Starting the pump and adjusting the water flow
(pads should be in place).
CAUTION - DO NOT RUN PUMP WHEN SUMP IS DRY.
Once the sump tank is full, the pump may be started by opening the pump valve which is
the smaller of the two 1/4 turn air valves. With this valve open the amount of water may
be adjusted by using the pneumatic flow control valve to obtain the desired amount of
water placed on the pads. This procedure is the same on all pneumatic models. Spray bar
valve must be open.
When, initially turning on the pump, the level in the sump will drop suddenly and restart
the flow of supply water. This is a normal condition as the cooling pads require a large
amount of water for proper wetting.
When the PORT-A-COOL® unit is new, the new pads will require an initial ‘breaking-in’
period. This period is required to start the pads absorbing the water into the paper. It may
take up to a week before maximum efficiency is reached.
D. Starting the fan/air mover.
(Cooling pads must be installed and caster brakes must be engaged.)
CAUTION - MAKE SURE THE GREEN GROUND LINE ATTACHED TO THE
PORT-A-COOL IS ATTACHED TO A GOOD GROUND TO
ELIMINATE STATIC ELECTRIC CHARGES.
Only the 36” reaction fan model (PAC2K36AD) has a rotating fan to move the air. This
unit is started by slowly opening the large 1/4 turn air valve on the control panel on the
side of the unit. The regulator is preset at the factory to obtain maximum output. This 1/4
turn air valve may be adjusted to provide the required output.
The 24” and 16”models (PAC2K24AD & PAC2K16AD) utilize a venturi air amplifier to
accomplish the air movement required. These units are also factory adjusted to the maxi-
mum pressure/flow rate. This 1/4 turn air valve may be adjusted to provide the required
output.
With the air & pump on and the pads wet, it is now possible to make fine adjustments to
the water flow for maximum cooling performance.
Adjust the flow where the pads appear to have a few dry streaks in them.
This condition of having a few vertical dry streaks in the pads indicates that the supply of
water is sufficient to the pads without being extreme.
When turning the unit off at the end of the day or week, the pump should be turned off
about 15 minutes before the air movement system to allow the cooling pads to dry. This
will enhance the life of the pads.
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