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● Closed Water Recirculation System Option
The system includes a reservoir (sump tank), pump and
heat exchanger. .On a closed water pump system, spray
water introduced into the tank through the spray headers is
drained to a sump tank. The water is then pumped back to
the spray water supply header for control by the header
valves. The sump tank, filled from customer's water supply,
has automatic water level control. The pump has a suction
filter inside the sump tank at the pump port. The pump is
mounted on the bottom tank frame members. Two pump
choices are available: centrifugal and gear.
The 5 Hp centrifugal pump has a capacity up to 60 GPM
at 70 PSI, and is self protecting. It can be operated without
damage with the spray header valves fully closed.
The 2 Hp gear motor has a capacity of about 16 GPM. A
relief valve on the output of the pump directs water to the
tank to protect the pump if the spray header valves are fully
closed.
● Sump Tank Option: On recirculating systems, a sump
tank holds water for the open loop systems. Bottom tank
frame members support the sump, which is caged but not
anchored. The overflow PVC drain fitting is dual purpose,
reversible. As installed, the NPTF is outboard for screwed
piping. When the fitting is reversed, external piping may be
cemented into the sweat end.
● Circulation Pump Option: A Crane circulating pump is
normally used to move tank water across the optional
immersion heating elements or optional cooling coils. The
pump is hard piped to the tank and moves with it. Water
flow is parallel to extrudate flow. The pump is operated at
120 volts through a step down transformer with the primary
at 230 or 460 volts, single phase, 60 HZ. Power require-
ments are about 0.5 KVA.
● Immersion Heater Option: The 230 volt, 3 kW, single-
phase tubular electric heater is a self contained unit with
off-on control and a temperature setting control dial. The
unit is mounted through the sidewall of the tank and
extends into the space below the extrusion. A pump is
applied to move the tank water over the heater tubes to
modulate end-to-end water temperature. The immersion
heater is supplied direct at 230 volts but requires a 3 KVA
transformer at 460 volts. The transformer is mounted in the
lower part of the tank frame. Care must taken to ensure that
the heater tubes are always immersed during operation, and
that the heater is turned off before draining tank water.
FEATURES AND
OPTIONS (CON.)
UGE014/0999 Water/Spray Tanks
DESCRIPTION 2-7