2285601 Imer Saw Capacitor

Features

• Fits Combi 1000, Masonry 350, Smart cut 350 saws

The Imer capacitor is a genuine OEM electrical component used on many IMER mixers, pumps, and saws to help their electric motors start reliably and run smoothly under load. In IMER equipment, capacitors are matched to the motor’s voltage, horsepower, and duty cycle, making them critical to safe performance and long service life.

What is an Imer Capacitor?

An Imer capacitor is an electrical device that stores and releases energy in the motor circuit. On IMER machines (especially single‑phase electric models), the capacitor is wired into the motor to provide:

• Extra starting torque so the motor can overcome the initial resistance of a loaded drum, pump rotor, or saw blade.

• Improved running performance, reducing motor vibration and helping it run more efficiently.

Depending on the model, an IMER machine may use:

• A start capacitor, which is only in the circuit during startup.

• A run capacitor, which remains in the circuit while the motor is running.

• A combined start/run capacitor or multiple capacitors in one housing.

IMER capacitors are chosen with specific microfarad (µF) ratings and voltage ratings so the motor performs as designed.

Where Imer Capacitors Are Used

You will find an Imer capacitor on many IMER electric machines, for example:

• Mortar and concrete mixers (MINUTEMAN, WHEELMAN, MIX 60, MIX 80, Workman electric, Mortarman 120 Plus, etc.).

• Tile and masonry saws (Combi series, masonry bench saws, overhead rail saws).

• Pumps and sprayers (Mighty Small 50, some Step‑Up and mortar pumps).

On these machines, the capacitor is usually located:

• Inside or mounted on the electrical box/control panel.

• In a capacitor housing near the motor, often a cylindrical or rectangular can with two or more terminals.

It is wired into the motor circuit according to the machine’s wiring diagram and is sized specifically for that motor.

Why the Capacitor Is Important

The Imer capacitor plays several crucial roles:

• Provides starting torque – Without the correct capacitor, many IMER motors will hum but fail to start, or start slowly and overheat.

• Reduces current draw and heating – A properly matched capacitor helps the motor run more efficiently, which reduces heat and extends motor life.

• Helps maintain speed under load – When mixing heavy mortar or cutting dense stone, the capacitor assists the motor in maintaining consistent RPM.

• Prevents nuisance tripping – A weak or failed capacitor can cause breakers to trip or overloads to engage more frequently.

Because of this, a failing capacitor can make a perfectly good machine appear “weak” or “dead,” even though the motor itself is still in good condition.

Common Symptoms of a Bad Imer Capacitor

You may need a new Imer capacitor if your machine shows one or more of these symptoms:

• Motor hums but does not start – You hear a humming noise when you turn it on, but the drum, blade, or pump doesn’t move.

• Motor needs a push to start – If you manually spin the drum, blade, or rotor and the motor then takes off, the capacitor is a prime suspect.

• Slow or weak start under load – The machine starts but struggles badly once material is added.

• Overheating or frequent overload trips – The motor gets unusually hot or trips the overload protection.

• Visible damage on the capacitor – The capacitor can appears swollen, cracked, leaking, or burned.

When these signs appear, replacing the capacitor with the correct OEM Imer capacitor is usually the first and most cost‑effective step.

Types and Ratings of Imer Capacitors

Different IMER models use different capacitor types and ratings. Typical characteristics include:

• Capacitance (µF) – A specific microfarad value such as 16 µF, 25 µF, 40 µF, 80 µF, etc., chosen to match the motor’s design.

• Voltage rating – Often 250V, 370V, or 450V AC, depending on the system. The replacement must have an equal or higher voltage rating.

• Duty type – Start capacitors (short‑duty, often non‑polar electrolytic) vs. run capacitors (continuous‑duty, typically oil‑filled or polypropylene).

• Mounting style – Round can with mounting stud, snap‑in style, or box‑type with mounting bracket.

For IMER equipment, the safest approach is to match the exact part number from the machine’s parts list or the markings on the original capacitor.

OEM vs. Generic Capacitors

You can find generic motor capacitors, but using the OEM Imer capacitor has distinct advantages:

• Exact µF and voltage rating – Ensures the motor gets the correct phase shift and torque.

• Correct physical size and connections – Fits inside the existing electrical box or housing and hooks up to the existing terminals.

• Matched to the duty cycle – IMER selects capacitors to handle the high inrush and duty of mixers, saws, and pumps.

• Reliability and safety – Poor quality capacitors fail early, overheat, or even rupture; OEM components are tested for the specific machine.

If you do use a non‑OEM capacitor in an emergency, it should always match the original µF, voltage, and type precisely, and be replaced with the proper IMER part as soon as possible.

How to Identify the Correct Imer Capacitor

To find the right Imer capacitor for your machine:

1. Check the parts diagram/manual

   • Look up your exact model (e.g., “IMER Mix 60 Plus,” “Mortarman 120 Plus,” “Combi 250VA,” “Mighty Small 50”).

   • Find the electrical section and note the capacitor part number, capacitance (µF), and voltage.

2. Read the label on the existing capacitor

   • Remove power, open the electrical box, and read the printed values on the capacitor body.

   • Note the µF rating, voltage rating, temperature range, and any IMER or vendor part number.

3. Match form factor and terminals

   • Ensure the new capacitor will physically fit in the housing and has the same type of terminals (fast‑on spades, screw lugs, etc.).

Providing your IMER dealer with model, serial number, and the original capacitor markings makes it easy for them to supply the correct OEM Imer capacitor.

Basic Replacement Steps and Safety

Replacing an Imer capacitor is usually straightforward, but safety is critical:

1. Disconnect power completely

   • Unplug the machine or lock out the breaker.

   • Confirm there is no power at the electrical box.

2. Discharge the old capacitor

   • Even when disconnected, capacitors can hold a charge.

   • Use a proper resistor or follow manufacturer guidelines; do not short the terminals with a screwdriver unless you know exactly what you are doing.

3. Label or photograph wiring

   • Take pictures of how the old capacitor is wired before disconnecting.

   • Label wires if needed to avoid confusion.

4. Remove the old capacitor

   • Disconnect the wires and release any clamps or brackets.

   • Inspect for signs of overheating, swelling, or leakage.

5. Install the new Imer capacitor

   • Mount it securely in the same orientation and location.

   • Connect wires to the same terminals as before.

6. Test the machine

   • Restore power and perform a test start with no load first.

   • Then test under normal load, listening for normal starting and running behavior.

If you are not comfortable working on live electrical components, a qualified electrician or service technician should perform the replacement.

Maintenance Tips to Extend Capacitor and Motor Life

To get the longest life from your Imer capacitor and motor:

• Keep vents and electrical boxes clean – Dust and slurry can trap heat and accelerate component aging.

• Avoid frequent rapid starts – Give the motor a brief rest between cycles instead of constant on/off “jogging.”

• Use the correct extension cord and voltage – Undersized cords and low voltage increase current draw and stress on the capacitor and motor.

• Avoid overloading the machine – Don’t exceed recommended batch sizes in mixers or cut capacity in saws.

Good operating habits protect both the capacitor and the motor, reducing breakdowns and unplanned downtime.