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1.2 THIS KIT INCLUDES:
Control box
12' long heat tape, w/ thermostat
30' long roll of insulation wrap
Copper 1/2" NPT thermowell w/clip
Cord grip connector
Linear platinum sensor
2' of 3/8" flexible conduit
Three (3) seal fittings for connectors
3/8" conduit straight connector
3/8" 90 degree elbow connector
1" x 1/2" NPT bushing
Four (4) #12-14 x 1" self tapping screws
Heat Condictive Compound
February 2008
P/N 32-0228
REV . B
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FOR
FP-4 FREEZE PROTECTION KIT
P/N 83-0763
FOR TURBO-COOL AFTERCOOLERS
MODELS
AC-140-7 thru AC-220-7
(230V-3PH-60Hz & 460V-3PH-60Hz)
WARNING
BEFORE STARTING INSTALLATION OR MAINTENANCE PROCEDURES, TURN OFF ELECTRICAL POWER AND
COMPLETELY DEPRESSURIZE THE AFTERCOOLER. FAILURE TO HEED THIS WARNING MAY RESULT IN SERIOUS
PERSONAL INJURY AND/OR DAMAGE TO THE UNIT.
NEVER REMOVE, REPAIR, OR REPLACE ANY ITEM ON THE AFTERCOOLER WHILE IT IS PRESSURIZED.
WHEN INSTALLING THIS KIT, ALWAYS COMPLY WITH THE NATIONAL ELECTRICAL CODE AND ALL OTHER
APPLICABLE FEDERAL, STATE AND LOCAL CODES.
SECTION 1 INTRODUCTION
1.1 DESCRIPTION OF OPERATION
The FP-4 freeze protection kit is designed to prevent aftercooler freeze up when the ambient temperature is near or below
freezing, 32
o
F (0
o
C).
The FP-4 has a two stage solid state temperature controller. The controller is mounted inside a Nema 4 enclosure. The
controller is used to energize a control relay which is rated to handle the load of the aftercooler fan at the various voltages.
The linear platinum temperature sensor and
thermowell mount into the piping between the
outlet manifold of the aftercooler and the
separator. When the temperature of the com-
pressed air system at the aftercooler outlet falls
to 35
O
F, the controller will automatically turn off of
the fan. The controller is set for a 10
o
F dead
band to prevent rapid cycling (fan will turn off at
35
O
F and on at 45
o
F).
A 12 foot heat tape and 30 feet of insulation wrap
are provided to wrap around the separator. The
heat tape is equipped with its own internal
temperature control. The heat tape and insula-
tion will provide additional freeze up protection.
FIGURE 1-A ITEMS INCLUDED WITH THIS KIT
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