4000-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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SECTION 26: RAPID
®
4000-SERIES START-UP PROCEDURES: EVAPORATIVE COOLER
Customer: ________________________________
Technician: _______________________________
Start-Up Co: ______________________________
Date: ____________________________________
Model Number: ____________________________
Serial Number: ____________________________
Field start-up should be performed by a qualified technician. The technician is responsible for assuring that
all of the items on this checklist are properly installed and operating. Upon completion, a copy of this form
should be returned to Rapid Engineering LLC using the contact information listed in the header
A. Piping
___ Water supply piped to proper location on evaporative cooler.
___ Water supply line drain solenoid (normally open) installed and piped to a drain inside the building.
___ Fill valve solenoid (normally closed) installed in the water supply line inside the building.
___ Sump overow is piped to a drain.
___ Sump drain is piped and the sump drain valve is installed.
___ Trap installed in sump drain pipe per local code.
___ Sump drain ball valve is wired properly.
B. Electrical
___ Electrical connections are made at junction box on air handler.
___ Water supply line drain solenoid (normally open) is wired properly.
___ Fill valve solenoid (normally closed) is wired properly.
C. Basic Operation (Control Packa
ge #1- Items apply to all evaporative coolers.)
___ Evap enable relay (located in main electrical panel) energizes evaporative cooler. The fill valve energizes
and sump begins filling.
___ The outside air freeze stat is set at 45° F.
___ When the outside air is below the freeze stat setpoint, the stat opens and the sump drains.
___ The water level is below the cardboard media support. The media should never sit in the water.
Adjustment of the float may be required depending on how level the air handler was installed.
___ Flow of water over the media is adjusted properly. Proper ow is achieved by adjusting (if needed) the
water flow adjustment valve so that the media completely saturates without getting droplets of water
projecting o media in direction of airflow. It may take up to 2 hours for the media to properly saturate.
Final ow adjustments should be made then.
___ Adjusted bleed-o rate to approximately 20% of the evaporation rate. Please refer to the Evaporative
Cooler Maintenance Section of the Installation, Operation and Service Manual for further information.
WARNING
Falling Hazard
Use proper safety equipment and practices
to avoid falling.
Do not use any part of equipment as support.
Failure to follow these instructions can result
in death, injury or property damage.
DANGER
Electrical Shock Hazard
Disconnect electric before service.
More than one disconnect switch may be
required to disconnect electric from
equipment
Equipment must be properly grounded.
Failure to follow these instructions can
result in death or electrical shock.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
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