Two-speed vacuums exist so the operator can drop the power on delicate work and put it back for heavy soil, and that capability lives in the motor rather than the machine. The Ametek Lamb 11622700 is a two-stage, two-speed thru-flow motor on 120 volts, found in commercial vacuums and central vacuum units that offer a high and low setting at the switch. Anyone replacing it needs to match not just the size and stage count but the speed count and lead configuration, because a single-speed motor will not wire into a two-speed control.
Thru-flow means the motor is cooled by the working air, which keeps the assembly compact and efficient. Brushes and bearings are the wear items; the motor is replaced as a unit rather than rebuilt.
Built for
- Commercial canister and upright vacuums with a high and low power switch
- Central vacuum power units offering variable suction
- Machines where reduced suction is needed for drapes, upholstery or loose rugs
- Service techs replacing a failed two-speed Lamb motor like for like
Specifications
- Type: Ametek Lamb vacuum motor / blower, thru-flow
- Blower stages: 2; speeds: 2
- Body diameter: 5.7 in
- Overall height: 5-15/16 in
- Weight: 5.5 lb
- Voltage: 120 V
- Maximum amps: 8.8
- Maximum airflow: 107 CFM
- Sealed vacuum (water lift): 106.9 in
- Maximum air watts: 316
- Speed: 20,100 RPM
- Bearings: double ball
- Brackets: metal
- Leads: 5 wires, red / blue / white / yellow / black, no plug
- Standards: CSA certified
Fits
No manufacturer machine compatibility list was found for this motor, so none is claimed. Confirm the part number, body diameter, stage count, speed count and lead configuration against the motor currently in your machine before ordering.
Note the published installation caution for this motor family: over-tightening the mounting screws can push the fan casing into the fan blades.
Frequently asked questions
Why does this motor have five wires instead of two?
The extra leads are what make two-speed operation possible. Single-speed Ametek motors use two black leads. This one uses five, colored red, blue, white, yellow and black, so the machine control can select high or low.
Can I replace it with a single-speed motor?
Not directly. A single-speed motor will not wire into a two-speed control. Match the speed count and lead configuration as well as the size and stage count.
Is it suitable for wet pickup?
No. This is a thru-flow motor, so the working air passes over the motor. Use a bypass motor for any machine that recovers liquid.
Is there anything to watch during installation?
Yes. Over-tightening the mounting screws can push the fan casing into the fan blades. Tighten evenly and only to the point of a firm seat.
How long do the brushes last?
Ametek publishes a carbon brush service interval of roughly 500 to 600 operating hours. Brushes worn shorter than 3/16 in should be replaced. A motor will typically accept two brush changes before the armature or bearings become the limiting part, which puts total service life in the 800 to 1200 hour range under preventive maintenance.
Discount Cleaning Products is a United States based dealer for Ametek Lamb vacuum motors and commercial cleaning equipment parts, with live technical support for matching a replacement motor to an existing machine.
