Encore - Model EA -Solenoid Driven Metering Pump

The Encore EA is available with the following features:

• Capacities from 17.78 lph 104.84 lph with pressures up to 10.34 bar (set by manually changing the stroke length via the stroke length adjustment knob).
• Manualcontrolwithcontinuousstrokefrequency adjustmentfrom 0 - 70 strokesperminute.
• Changeover function to external pulse control by water meter or other voltage free contacts.
• Connection for level indication with alarm signal.
• Optional warning alarm relay.

The stroke movement of the metering diaphragm is produced by a D.C. solenoid. Due to the infinitely adjustable stroke, the stroke length can be set anywhere between 20 - 100%, depending on the pump size. The solenoid design eliminates reduc tion gears or rotating parts, making the Encore EA the Encore EA to be adapted to practically all relong- lasting and low-maintenance. The armature runs in a maintenance free bushing with PTFE coating and additional silicone grease lubrication.

Liquid ends of Polypropylene, PVC, PVDF and 316 Stainless Steel. Diaphragms are PTFE coated EPDM. Seals of Viton™, Hypalon™ or PTFE are available.

Diaphragm Leak Detection

The main part of the control unit is a microprocessor which controls the stroke frequency with digital accuracy. The various control possibilities allow the Encore* EA to be adapted to practically all re-fluirementsof home watersupply, water and waste water treatment as well as industrial processes. The electronic control unit is available in two basic versions with functions described below.

• Level Control with Alarm Signal: x
• Low Level Indication: x
• Warning Alarm Relay: o
• Manual Control 0-100%: x
• Contact: x
• External Control:
• 0-20 mA --
• 4-20 mA --
• Pulse Multiplication/Division: --
• Stroke Frequency Adjustment: x
• Digital Display: x

-- = not available; x = standard; o = optional