Travaini Pumps USA PVL 10-15, Инструкция по установке и эксплуатации

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Installation and Operations Manual
11
All multiplex systems are supplied with “Automatic alternation” and “Frequent stop/start protection.”
“Automatic alternation” allows the pumps to operate equally (even run time) by alternating each pump
whenever the pump(s) shut down. When alternation occurs, the “lead” pump becomes the “lag” pump and the
“lag” pump becomes the “lead” pump.
Frequent stop/start protection” is used to allow the pump(s) to operate a minimum amount of time. The time
period is factory set at 10 minutes. This allows the pump(s) to warm up and eliminates frequent starting of the
pump(s), which can cause premature coupling failure and breakdown of electrical components. The pump(s)
will continue to operate after the vacuum level has been satisfied. In order to maintain the desired vacuum level,
a vacuum relief valve is usually supplied with the system. If a vacuum relief valve is not supplied with the
system and the vacuum level is critical, a relief valve must be installed.
If the pump(s) are not alternating and/or are frequent starting, one of the electrical components may be
defective. Contact the factory for more information.