Ametek Lamb Motor Assembly ...
$396.99
Product details
Part 117572-12 is an Ametek Lamb motor assembly built for 240-volt service, two-stage, 7.2 inches across the fan housing, with a bypass design and a tangential discharge horn.
The horn is the motor's discharge duct rather than an alarm fitting, shaped to guide pressurized exhaust air out of the motor and into the power unit housing. Ametek builds this one on its 7.2-inch Premier platform with non-loading fans, lists it at 240 volts AC with an input power of 1500 watts, gives its replacement brush kit as 833450-56, and rates the 7.2-inch bypass tangential family at sealed vacuums up to 135 inches of water lift and flow rates up to 125 CFM.
Two-stage bypass motors at this frame size are a common fit in central vacuum power units, where the bypass design keeps cooling air away from the debris-laden airstream and the two stages hold static pressure over long duct runs. The 240-volt winding is not interchangeable with a 120-volt motor of the same physical frame, so the voltage stamped on the plate is the first thing to check against the unit coming out. The 120-volt motors on this frame take a different brush kit, so match the brush number to the motor rather than to the machine.
Past that, watch for the usual wear signs: suction that has faded across the system, a bearing whine or grind that was not there before, running that cuts out partway through a job, or a burning smell. Rule out a blocked hose, full canister, or dirty filter first, since any of those can mimic a failing motor. This assembly carries mains voltage at 240V, so disconnect power at the unit before opening it, or have a technician handle the swap.
- Part: 117572-12
- Spec: 7.2-inch Premier frame, 240 volt AC, two-stage bypass, tangential discharge horn
- Power: 1500 watts input
- Replacement brush kit: 833450-56
- Before ordering: confirm the 240V rating, horn style, and frame diameter against the motor you are removing