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EMC - Auto Fill System (AFS)
The Auto Fill System (AFS) allows the Water Eater® to operate in a continuous and unattended mode as long as a feed source of water is available and the solids or concentration level does not create an overheat condition.
The system operates as follows:
When the fluid level in the Water Eater® drops below the low level set point, a Countdown Timer activates the 70 SFP Self Priming Fill Pump (see below) and a Delay Relay which overrides the low level shutoff. If enough fluid is added by the pump during this timer cycle to satisfy the low level, the heating system will stay engaged. If the low level setpoint is not reestablished within the specified setting of the timer (i.e. the feed tank is empty), the Delay Relay is disengaged and the Water Eater® heating system will shut down. No external sensor in the feed tank is required.
The Auto Fill System can be operated with either the supplied 70 SFP Fill Pump or with a customer supplied pump or solenoid valve. The EMC supplied pump/solenoid contactor is rated at 40 Amps, 1 or 3 phase.
A backup high level control is supplied as an added safety system. Also, a three way diverter valve described below is included.