Product overview
A 1200 watt three-stage bypass motor in the 5.7 inch frame, built for machines that need the motor cooling air kept separate from the working air. Three stages give it the sealed lift that wand work and deep extraction demand.
It is designed for clean, dry, filtered air only. That is a design requirement rather than a caution — the bypass path is what gives this motor its service life, and water carried into the working side is the usual cause of early failure.
Specifications
| Ametek model | 116859-13 |
| CCW code | AV14 |
| Frame size | 5.7 inch / 145 mm |
| Stages | Three |
| Voltage | 240 V |
| Power | 1200 W |
| Discharge | Tangential bypass |
| Bearings | Double ball |
| Speed | Single speed |
| Fan end bracket | Thermoset plastic |
| Commutator bracket | Aluminium |
| Brush kit | Ametek 833508-50 |
Design features
- Skeleton frame construction
- Patented air seal bearing protection
- Epoxy-painted fan case
- Provision for grounding
Fits
- Olympus
- Hydro-Force FX
- Hydro-Force EX
- Prochem
- Mytee
- Century
It also suits a number of other machines built around the 5.7 inch three-stage frame. If your machine is not listed, send us the model and the motor part number and we will confirm.
Important. CCW also stocks a two-stage 5.7 inch motor at 1200 W (Ametek 119625-00). The two motors share a frame size and a wattage but are not interchangeable in performance — the three-stage produces more sealed lift, the two-stage more airflow. Check the stage count on the motor you are replacing.
Choosing and fitting a replacement vacuum motor
Match the frame size, stage count, discharge type and voltage. All four have to agree. A motor of the right diameter with the wrong number of stages will fit the housing and then underperform, and a peripheral-discharge motor will not seal correctly in a housing built for tangential discharge.
Stages set vacuum, not airflow. Adding a stage raises sealed lift and does comparatively little for open airflow. A three-stage motor is the choice for wands and deep extraction where the tool restricts flow; a two-stage suits higher-flow work and draws less current.
Bypass motors need clean, dry, filtered air. The cooling air path is separate from the working air path, which is exactly why these motors last — but it also means the working side must never see water or fine dust. Most motors that fail early were drowned, not worn out.
Check the brushes before you condemn the motor. Carbon brushes are the usual wear item and are far cheaper than a motor. A motor that has lost power, sparks heavily at the commutator or runs rough is often a brush job.
Replace the gasket and check the mount. A vacuum motor is only as good as its seal. Refitting a new motor onto a hardened gasket leaks air and costs lift. Inspect the mounting spring or grommets at the same time — vibration transmitted into the housing shortens motor life.
