Note:
∙Never switch contactor leads or motor leads for reversing rotation.
∙Do not use contactor or motor leads for phase matching.
∙Compressor noise from reverse rotation is noticeable. Do not run in this mode for more than ten (10) seconds. The compressor shuts off if it is run longer in this mode.
∙Reverse rotation can cause suction and discharge pressures to be approximately equal; amp draws will be lower than normal.
∙If you discover that compressor rotation is reversed, correct it by switching any two main power leads into the disconnect switch or distribution block on the unit.
Check your work and proceed to the following Piping Considerations section.
3-3 Piping Considerations
Piping systems vary with process application and pump tank configuration. Typical system configuration drawings are provided in this manual; the details may or may not apply to your application. Piping systems must be designed by a person knowledgeable in piping system design and configuration. Sterling’s Contracting Department can design and install a piping system tailored to your process.
∙All piping returning to the pump tank must be equipped with an inverted trap with a vacuum breaker at the high point of the system to prevent mains from siphoning into the pump tank.
∙Run mains full size in order to reduce pressure drop in the system and provide maximum pressures at the ends of the mains.
3-4 Making Process Water Connections
All Models
All SSC Series chilling stations have two chilled water connections per unit, and on
SSC Series Central Chilling Stations | Page 21 of 86 |
