Recold
/
JW Series
Fluid Cooler
/
Accessories
12
RECOLD PRODUCTS
550 W MERCURY LANE
BREA, CALIFORNIA 92821
UNITED STATES
704 529 6080
[email protected]
spxcooling.com
In the interest of technological progress,
all products are subject to design and/or
material change without notice.
©2008 SPX Cooling Technologies, Inc.
Printed in USA | RECOLD JW-TECH-08
CAPACITY CONTROLS
Dual Fan Motors
—The dual fan motor package is available as
a proven energy saving capacity control option. It consists of
furnishing a high efficiency motor, a 1200 RPM, low speed motor,
two sets of drives and belts, extended fan shaft and motor bases
on opposite sides of the blower. A UL control-starter panel is
available as a completely wired package for one point connection.
Variable Speed Drive
—A Variable Speed Drive automatically
minimize the tower’s noise level during periods of reduced load
and/or reduced ambient temperature without sacrificing the
system’s ability to maintain a constant cold water temperature. This
is a relatively inexpensive solution, and can pay for itself quickly in
reduced energy costs.
Electric Damper Controls
—An electric damper control package
is available as an accessory for modulating the internal damper
system. A proportional solid state actuator is factory mounted
below the fan scroll and attached to the damper shaft by
connecting linkage. A sensing bulb connected to the actuator by
a capillary tube is normally mounted in the unit pan water basin
for monitoring the system. However, when specified, a pressure
control may be supplied for field mounting to allow direct head
pressure control. An end switch located inside the motor actuator
may be adjusted to cycle the fan motor on for pressure rise and off
when dampers close.
COIL CASING INSULATION
In order to further reduce the heat loss from the unit coil, insulation
factory installed on exterior coil panels is available. A protective
coat of paint is applied to the insulation for protection from the
weather elements.
POSITIVE CLOSURE DAMPERS
Many times during unit shutdown with fan and pump off, it is
desirable to conserve the amount of heat loss from the process
fluid. For those applications, closure dampers are available for this
installation at the air discharge of the fluid cooler. The damper
package is designed to prevent convective air flow through the
idle unit thus minimizing the heat loss. Installation of the closure
dampers requires all wiring to be completed in the field. An electric
actuator is factory mounted, however controls are to be supplied by
others. The damper actuator should be wired into the field control
system to allow the dampers to fully open when the fan cycles on
and close when the fan cycles off. The actuator requires a 115V
power supply
ELECTRONIC WATER LEVEL CONTROL
The electronic water level control package provides a constant
and accurate means of monitoring water level in the unit. For this
reason, it is often recommended for those installations which
require year round operation in low ambient conditions.
The complete package includes an electric float switch with stilling
chamber which is factory installed in the pan section of the unit.
An electric solenoid valve for water make-up is shipped loose for
remote installation. All wiring must be provided in the field by
others.
PUMP STRAINER
Pump intake extension and a cleanable non-ferrous pump strainer in
an easy access location is available.
MODIFICATIONS TO WATER DISTRIBUTION SYSTEM
Various package are available to provide manual or automatic
change-over as a backup system in the event of a spray pump
failure
PAN HEATER
The use of a remote sump tank located indoors is a common form
of pan water freeze protection for evaporative cooling equipment.
However, for those installations which will not allow this type of
system, freeze protection may be provided by electric immersion
heaters or steam or hot water coils installed in the pan.
The electric heater package consists of immersion heaters installed
in the pan to provide efficient even heat distribution. Standard
heaters are selected to provide approximately 40°F pan water at
-10°F ambient temperature. A low water cutout switch is supplied
to prevent heater operation when the elements are not completely
submerged. The heaters are monitored by a sump thermostat
with remote sensing bulb located in the pan water. All heaters and
controls are factory installed for field wiring by others.
NOTE: Pan heater packages are designed to prevent pan water
freezing during unit shutdown with fans and pump idle.
CAPACITY BOOSTER COIL
A finned coil mounted on top of the eliminator section is available
primarily for applications with high entering fluid temperatures
or for applications where dry operation under low entering air
temperatures is anticipated. Copper tube with aluminum or copper
fin coils are available.
VIBRATION ISOLATORS
Spring type vibration isolator rails may be supplied for field
installation, most units will require an intermediate rigid steel
framework between the isolators and the base of the unit to
provide adequate structural support for the unit. Consult Recold
sales representative for recommendations on any vibration isolation
application.
STAINLESS STEEL CONSTRUCTION
300 stainless steel construction is offered as an option for sump
pan and upper casing panels.