®
Installation and Service Instructions for 48,100 Series Brakes (rev. A)
(Models 1-048-151, 1-048-161 and 1-048-171)
P/N
effective 2/23/04
Figure 1
Important
Please read these instructions carefully before installing, operating, or servicing your Stearns brake. Failure to comply with these instructions could cause injury to personnel and/or damage to property if the brake is installed or operated incorrectly. For definition of limited warranty/liability, contact Rexnord Industries, Inc., Stearns Division,
5150 S International Drive., Cudahy, WI 53110, (414)
Caution
1.Installation and servicing must be made in compliance with all local safety codes including Occupational Safety and Health Act (OSHA). All wiring and electrical connections must comply with the National Electric Code (NEC) and local electric codes in effect.
2.Do not install the brake in atmospheres containing explosive gases or dusts, corrosive substances, water, oil or dust.
3.To prevent an electrical hazard, disconnect power source before working on the brake. If power disconnect point is out of sight, lock disconnect in the off position and tag to prevent accidental application of power.
4.Be careful when touching the exterior of an operating brake. Allow sufficient time for brake to cool before disassembly. Surfaces may be hot enough to be painful or cause injury.
5.Do not operate brake with housing removed. All moving parts should be guarded.
6.After usage, the brake interior will contain burnt and degraded friction material dust. This dust must be removed before servicing or adjusting the brake.
DO NOT BLOW OFF DUST using an air hose. It is important to avoid dispersing dust into the air or inhaling it, as this may be dangerous to your health.
a)Wear a filtered mask or a respirator while removing dust from the inside of a brake.
b)Use a vacuum cleaner or a soft brush to remove dust from the brake. When brushing, avoid causing the dust to become airborne. Collect the dust in a container, such as a bag, which can be sealed off.
7.Installation and servicing should be performed only by qualified personnel
familiar with the construction and operation of the brake.
8.For proper performance and operation, only genuine Stearns parts should be used for repairs and replacements.
General Description
The 48,100 series is a
Construction
The 48,100 series brake utilizes one composition friction disc driven by a metal hub that is fastened to the motor shaft. Manual release with automatic electrical reset is provided. Splined hub and friction disc is standard. Only open enclosure is available.
Operation
When brake is properly wired, starting the motor will energize the solenoid and compress the pressure spring. This action removes the force against the stationary plate and friction disc and allows the disc to rotate freely. Stopping the motor will de- energize the solenoid and restores