PolarCool 36″ ZONE PolarCool™ Fan - Manual (Page 11)

Manual No. 4801-6404 Rev 8-10 PolarCool Page 11 of 15
7.9 Flow Control Adjustment
The Flow Control Valve for the PolarCool Zone is shown to the
right. Flow adjustments are factory preset, however can be
adjusted by the user based upon local water pressure and
evaporative conditions at the site. The amount of water flow
affects the efficiency and operation of the PolarCool Zone.
During operation the flow should be adjusted so that sufficient
water soaks the pads, but only enough to completely soak the
pads.
If there is too much water flow, the pads become over-soaked -
that is, there is more water flow than required for proper
evaporation. Surplus water may be sucked into the fan producing
a water droplet spray directly in front of the PolarCool. In some
cases, if you stand in front of the PolarCool you may feel the
water spray! The efficiency of the Polar cool is reduced in this
case. If this happens, reduce the water flow.
If there is too little flow, there will not be enough water to fully soak the pads. Dry spots in the pads will be
visible. Again, this reduces the efficiency of the PolarCool. If this is the case, increase the flow until the pads
become fully soaked.
Adjust the Water Flow
as described above. The
FULL
OPEN and CLOSED
positions of the Valve are
shown in figures at the right.
Valve
Closed
Valve
Full Open
Increase
Pressure
Adjust Water Flow
Flow Control Adjustment
(Pads not shown)
Flow
Control
Valve
Pump
Flow
Control
Valve
Pump
Decrease
Pressure