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Imer Mortarman 120/Step Up 120 Replacement Inverter

Imer Mortarman 120/Step Up 120 Replacement Inverter

SKU: 3227796
$466.68
$466.68
Shipping calculated at checkout.

Imer Mortarman 120/Step Up 120 Inverter

Features

  • Replacement inverter for Mortarman 120 mortar mixer, and Step Up 120 pump

Imer Mortarman 120/Step Up 120 Replacement Inverter is a genuine IMER electronic drive module designed to replace the factory inverter that controls the motor speed and power on the Mortarman (Mix) 120 vertical shaft mixer and the Step Up 120 pump. This OEM inverter restores proper start‑up, torque, and overload protection so your Mortarman 120 mixer or Step Up 120 grout pump runs smoothly and reliably on the correct 115V or 208V power supply.

What the Imer Mortarman 120/Step Up 120 Replacement Inverter Is

Dealers list this part simply as “Imer Mortarman 120/Step Up 120 Inverter” or “3227796 Imer Inverter for Mortarman 120,” and describe it as the replacement inverter for Mortarman 120 mortar mixer and Step Up 120 pump. In IMER’s terminology, “inverter” means a variable‑frequency drive (VFD) or electronic speed controller that:

  • Takes incoming AC power at the rated voltage.

  • Controls motor speed, acceleration, and torque.

  • Provides overload and fault protection for the mixer or pump motor.

On the Mortarman 120 (also marketed as the Mix 120 Plus vertical shaft mixer), the inverter is part of the electrical group that drives the 2 HP, 110V motor and supports forward/reverse paddle rotation. On the Step Up 120 pump (7.5 HP, 208V 3‑phase pump), the inverter is part of the pump’s power and control system that manages motor speed for pumping pressure and flow.

Compatible Machines: Mortarman 120 / Mix 120 Plus and Step Up 120

This replacement inverter is specifically referenced for two key IMER models:

  • Mortarman 120 / Mix 120 Plus Vertical Shaft Mixer

    • Also called Mix 120 Plus or Mortarman 120+.

    • 2 HP, 110V single‑phase vertical shaft mixer with 4.25 cu ft drum and 3 cu ft batch output.

    • Uses a hi‑torque gearbox drive with reverse; the inverter helps manage motor performance and protection.

  • Step Up 120 Pump

    • High‑performance 208V/60 Hz, 7.5 HP 3‑phase pump for structural grouts, mortar, and similar materials.

    • Uses an electric motor and power panel; the inverter is part of that panel’s speed and load control for the pump.

ContractorsDirect’s listing states clearly: “Imer Mortarman 120/Step Up 120 Inverter – Replacement inverter for Mortarman 120 mortar mixer and Step Up 120 pump.” HandtoolPro’s listing repeats the same description for the same replacement inverter.

Role of the Inverter on the Mortarman 120 Mixer

The Mortarman 120 (Mix 120 Plus) is a 2 HP, 110V, single‑phase vertical shaft mixer with 38 RPM paddles and forward/reverse capability, designed for mortar, stucco, grout, and dry‑pack. IMER’s Mix 120 Plus manual and spec sheet show an electrical group consisting of:

  • Plug and electric cable (3225237).

  • Safety catch button (emergency stop).

  • Contactor (3230439).

  • Inverter (3230075).

  • Resistor (3230076).

  • Junction box (3230081).

The inverter (IM1 in the wiring diagram) is integrated into the control system along with the contactor, thermal protection, and safety devices. Its main functions on the Mortarman 120 include:

  • Managing the 2 HP motor’s start‑up and ramp‑up under load.

  • Helping handle forward and reverse paddle operation under the hi‑torque gearbox.

  • Providing over‑current and voltage protection in conjunction with other components.

If the inverter fails, common symptoms include the motor not starting, tripping during load, inconsistent speed, or fault codes on the control panel. Replacing the inverter with this OEM unit restores the mixer’s designed electrical performance.

Role of the Inverter on the Step Up 120 Pump

The Step Up 120 is a powerful 208V, 7.5 HP 3‑phase pump designed for structural grouts and demanding pumping applications. It uses an integrated power panel and motor control system to:

  • Start and stop the 7.5 HP pump motor safely.

  • Adjust speed (and thus flow/pressure) according to application.

  • Protect against over‑current, under‑voltage, and overload conditions.

The Imer Mortarman 120/Step Up 120 Replacement Inverter is the OEM inverter used in that power panel. If it fails, the Step Up 120 may fail to start, show fault codes, or lose speed control. Installing the proper replacement inverter restores reliable operation and ensures the motor runs within IMER’s specifications.

Symptoms That Point to a Bad Inverter

On either a Mortarman 120 or a Step Up 120, inverter failure can cause:

  • Motor not starting even though power is present and safety switches are engaged.

  • Mixer or pump running very briefly then tripping or shutting down.

  • Error lights or fault indicators on the control panel associated with motor or drive faults.

  • Inconsistent speed, unusual noises from the motor under load, or no response to controls that normally affect speed.

Before replacing the inverter, you should verify:

  • Power supply voltage is within the specified range (Mortarman 120: 103–126V at full load; Step Up 120: correct 208V 3‑phase).

  • Fuses, contactors, and safety devices are working.

  • Motor windings are not open‑circuit or shorted.

If those check out, the inverter is often the next suspect, and using the Imer Mortarman 120/Step Up 120 Replacement Inverter is the proper OEM fix.

Why Use an OEM Imer Inverter Instead of a Generic Drive

Although generic VFDs exist, there are strong reasons to use this IMER‑specified inverter:

  • Pre‑engineered settings

    • The OEM inverter is selected and configured to match the motor characteristics (HP, voltage, frequency) and application loads IMER designed for.

  • Wiring compatibility

    • It matches the existing wiring harness, connectors, and panel layout, minimizing installation errors.

  • Integration with safety circuitry

    • The inverter is part of a system with emergency stops, limit switches, thermal protection, and resistors; using the OEM part maintains the designed safety logic.

  • Support and documentation

    • IMER’s manuals, wiring diagrams, and parts catalogs reference this inverter by part number, making troubleshooting and service much simpler.

Using a non‑OEM drive would require re‑engineering settings and wiring, which can be time‑consuming and risky on job‑critical equipment.

Basic Installation Notes (High‑Level)

Exact installation steps are covered in IMER parts and service documentation, but the general process to install the Imer Mortarman 120/Step Up 120 Replacement Inverter includes:

  1. Disconnect power completely

    • Unplug the mixer/pump and lockout/tagout according to site safety rules.

  2. Access the electrical panel

    • On the Mortarman 120, remove the electrical cover to reach the inverter, contactor, and wiring as shown in the Mix 120 Plus manual’s wiring diagram.

    • On the Step Up 120, open the power panel where the motor drive is mounted.

  3. Document connections

    • Take photos or notes of all terminal connections to the existing inverter (input, output, control wiring).

  4. Remove the old inverter

    • Unbolt it from the panel and disconnect wiring, taking care not to damage the terminals or cables.

  5. Install the new inverter

    • Mount the replacement inverter in the same position.

    • Reconnect cables according to IMER’s wiring diagram and your documentation.

  6. Check wiring and clearances

    • Confirm all terminals are tight, no loose wires or shorts, and the panel is properly reassembled.

  7. Power up and test

    • Restore power, then run the mixer or pump under light load to verify correct operation, direction of rotation, and response to controls.

Because you’re dealing with line voltage and electronic drives, IMER and dealers recommend that qualified technicians perform this work.

Supporting Documentation and Parts Sources

To support inverter replacement, several IMER resources and part catalogs are available:

  • Mortarman 120/Mix 120 Plus manual and wiring diagram – details plug, inverter, contactor, resistor, and wiring.

  • IMER MIXER Parts – Mortarman 120 Plus – lists all electrical and structural components, including the inverter.

  • IMER Step Up pump parts pages – show the pump kit and electrical assemblies for the Step Up 120.

  • 3227796 inverter listings – from ContractorsDirect and similar sources, confirming this part is the IMER Mortarman 120/Step Up 120 Inverter.

Using these references ensures you order the correct inverter and connect it properly.

Why Choose the Imer Mortarman 120/Step Up 120 Replacement Inverter

If your Mortarman 120 vertical shaft mixer or Step Up 120 pump has lost speed control, trips unexpectedly, or refuses to start despite correct power and wiring, the Imer Mortarman 120/Step Up 120 Replacement Inverter is the OEM solution designed for this exact situation. As the factory‑specified drive module for both machines, it restores proper motor management, torque, and protection without the guesswork and risk of adapting a generic VFD.

For contractors, masons, and grout specialists who depend on their Mortarman 120 mixer and Step Up 120 pump for daily production, installing the correct IMER inverter minimizes downtime, preserves safety features, and keeps your equipment running at the performance level that IMER designed and documented in its manuals and parts catalogs.