Sterlco Royal Series Compact Temperature Control Unit User Manual
Page 29
Royal Series Water Temperature Control Units
Page 29
Motorized Modulating Valves
Optional
Optional motorized modulating valves are recommended for large
cooling applications where the process temperature is very near the
cooling water supply temperature and the temperature controller
unit pump is used as a booster. The gradual shutoff they provide
also eliminates water hammer. The option includes a complete
valve and motor package in place of a long-life solenoid valve.
The motorized modulating valve has infinite positioning. It fully
opens in one (1) minute and fully closes in 15 seconds.
Water Hammer Arrestor (Shock Stop)
Optional
Shock waves from fast-operating solenoid valves may damage
some process systems. For these applications, a welded metal
bellows-type shock stop with a pre-charged and sealed nitrogen
blanket can be installed in the cooling piping.
Pump Starter
Royal Series high quality IEC-rated pump motor starters are
industrial grade motor controls with overload protection and
manual reset.
Transformer
High quality industrial design transformers are specified to suit
incoming voltage on the application and provide 115 VAC control
voltage. The 115 VAC circuit is protected by primary fusing and
secondary grounding.
Heater Contactor
Your Royal Series unit uses high-quality IEC-rated industrial-
grade electromechanical contactors for heater controls.