Sterlco Royal Series Compact Temperature Control Unit - Manual (Page 28)

Page 28 Royal Series Water Temperature Control Units
Low Pressure Cutout Switch
This switch, set at 16 psig with a 2 psig differential (110.3 kPa/
1.10 bars with a 13.79 kPa/0.14 bars differential) shuts down the
unit if the
COOLING WATER IN or MAKEUP water pressure
drops below 16 psig (110.3 kPa/1.10 bars).
Pumps
Pumps range in power from ¾ hp to 10 hp (0.56 kW to 7.46 kW)
and are equipped with 3-phase ODP motors and seal flush lines as
standard.
The pump is a bronze-fitted close-coupled centrifugal type. It
features a split case design to facilitate replacement of the seal. It
has a high output capacity with excellent discharge pressure
helping it facilitate turbulence to maximize heat transfer, and is
well suited for the conditions under which it was designed to
operate.
Heaters
The specially designed 9 kW three-phase low watt density
electrical immersion heater heats the water, and the controller
regulates the temperature. The standard heater has an incolloy
sheath for best heat transfer and low fouling properties.
Low watt density immersion heaters at 12 kW, 18, 24 kW, 36 kW,
and 48 kW are available options for these models, depending upon
the heating needs of the process. All models are built to provide
full or partial heat as required by the process and determined by the
controller, providing more precise temperature control.
Solenoid Valves
Royal Series systems use rugged, industrial design solenoids with
replaceable coils and/or internal components. Depending on
required cooling capacity, solenoid valves are available in sizes
ranging from
1 /
4
” to 3 /
4
”; 1 /
2
” x 9 /
16
” and 3 /
4
” x 3 /
4
” solenoid valves are
slow-closing.