Gardner Denver PUREAIR EWC99C, Руководство по эксплуатации и обслуживанию

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PLC (RO timer function) – This device governs the frequency and duration of the water-fill cycles. It
shares use of the fill water solenoid valve with the AUTO SENTRY W controller and governs the dump
water solenoid valve. It is located in the starter enclosure. Refer to the RO Filtration System, SECTION
8, for details on its operation and adjustments.
Emergency Stop/Push Button - This is a maintained push-button, and removes power from the
controller outputs regardless of controller status. It is located on the upper section of the panel, next to
the keypad. This should be used for emergency purposes only - use the keypad [STOP/RESET] for
normal controlled stopping.
WARNING
Automatic restarting or electrical shock can cause injury or death. Open, tag
and lockout main disconnect and any other circuits before servicing the unit.
Control Transformer - This changes the incoming power voltage to 110-120 volts for use by all unit
control devices. Two primary and one secondary fuse are provided. Refer to adjacent labeling for
replacement information.
Terminal Strip - This provides connections for all 110-120 volt devices not contained within the
enclosure.
Fan Starter - The starter is used to provide control and overload protection for the fans. Overload
heaters should be selected and adjusted based on the motor nameplate amps and the instructions
located inside the cover of the electrical enclosure.
Main Starter - This starter is used to provide control and overload protection for the main drive motor.
Full voltage starters employ a single contactor. Overload heaters should be selected and adjusted based
on the motor nameplate amps and the instructions located inside the cover of the enclosure. Wye-Delta
starters employ three contactors which are controlled sequentially to provide low current starting. For
Wye-Delta starters, the motor nameplate amps must be first multiplied by 0.577 before using the heater
table.