Control panel documentation

PLC Drip Nitrogen Reduction Control Panel

CP-001-1-0002

Siemens LOGO! PLC control · drip dispersal · nitrogen reduction. 120 VAC single phase, two separate feeds. Panel model MCP-LV120-15A-PLCFS-1P-R1.0. For Hydro-Action® wastewater treatment systems. UL 508A Listed, file E547664.

Read first — the alarm feed stays live with the main breaker OFF

This panel is fed by TWO separate 120 V circuits: main power and a dedicated alarm / control feed. The alarm feed keeps annunciation live when main power is lost, so it remains energized with the main breaker off. Disconnect BOTH circuits and verify with a voltage tester before opening the panel — do not assume the main breaker isolates this enclosure. The remote alarm circuit must not exceed 5 A. This panel contains no motor overload devices; every connected motor must incorporate integral overload protection. A main panel disconnect and pressure switches 1 and 2 are field supplied.

Documents

Operation Manual Safety, specifications and motor loads, installation, terminal connections, operation and override logic, PLC schedule, rostered components, maintenance · PDF Specification Sheet Ratings, motor load table, operator controls, PLC schedule as specified, compliance notes · PDF Troubleshooting Guide Fault isolation by device class — power, PLC, dosing, flush, recirculation, motors, alarm · PDF

At a glance

Model: CP-001-1-0002 — PLC Drip Nitrogen Reduction Control Panel · panel model MCP-LV120-15A-PLCFS-1P-R1.0
Supply: 120 VAC, 60 Hz, single phase, all circuits — two feeds: main power and a separate alarm / control feed
Connected load: 24.0 A total across four motors
Branch protection: CB1 20 A · CB2 20 A · CB3 10 A · CB4 10 A
Alarm circuit: Remote alarm circuit must not exceed 5 A
Motor loads: Dose pump 3/10 HP, 7.0 FLA · mixer 3/10 HP, 7.0 FLA · recirculation pump ¼ HP, 5.0 FLA · compressor ¼ HP, 5.0 FLA
Overloads: None in this panel — every motor must incorporate integral overload protection
Control platform: Siemens LOGO! PLC — 8 digital inputs, 4 relay outputs. Runs the dose schedule, motor sequencing, filter backflush, drip field flush, override counting and failsafe logic.
Dose schedule: Dose ON 12 minutes · dose OFF 1.75 hours, as specified. The PLC ships programmed and verified — do not alter the program, timers or retentive counters without written direction from AKHA Manufacturing, LLC.
Override: The override float forces a dose cycle outside the schedule whenever demand requires it. The PLC counts and retains every override — a climbing count is a maintenance record indicating sustained high inflow, to be investigated at the source rather than corrected at the panel.
Protection: High water is annunciation only — it raises the beacon, horn and remote alarm output and never interrupts dosing, recirculation, mixing or aeration. If treatment stops during a high-water event, look for a separate fault, not the float.
Operator controls: B1 alarm horn silence (rotary) · B2 alarm test · B3 filter flush HAND · B4 dose pump HAND · B5 field flush HAND
Field devices: Two flush solenoids · four floats (recirculation, drip enable, override, alarm) · pressure switches 1 and 2, field supplied
Field wiring: 26–10 AWG copper, 600 V, 60 °C minimum · Dinkle DK10, DK4 / DK4N-PE, DK2.5 / DK2.5N-PE
Terminal torque: Dinkle rated values — DK4 at 0.6 N·m (5.3 in-lbs) · DK2.5 at 0.4 N·m (3.5 in-lbs) · DK10 per the Dinkle datasheet. Never apply a single blanket figure across terminal types.
Reference drawings: Line Drawing V4.8.1 · Connection Diagram V4.8.1
Compliance: UL 508A Listed · file E547664 · NFPA 70 (NEC)

Support & warranty

This panel is manufactured for AKHA Manufacturing, LLC. All technical support, warranty claims, service questions, alarm response and callbacks are administered by them. Legacy Controls does not accept direct enquiries from end users or installers for this product line.

Toll free 800-370-3749 · Phone (574) 936-2542

2055 Pidco Dr. / P.O. Box 640, Plymouth, Indiana 46563