Stearns 500 User's Manual
Contents
1. only genuine Stearns parts should be used for repairs and replacements Warning Any mechanism or load held in position by the brake should be secured to prevent possible injury to personnel or damage to equipment before any disassembly of the brake is attempted or before the manual release knob or lever is operated on the brake Note on the 55 700 Series the capacitors had to be remotely mounted Remove them and the wiring from them to the brake Connection The two leads of Instructions Housing Removal 1 To remove housing follow instructions listed for the appropriate brake series 2 The arc suppression module kit is a 3 4 Reassemble housing etc in reverse order of the appropriate Section of Step 1 NOTE For complete instructions with troubleshooting request sheet eee Jepace nen ee the arc suppression module are to be applicable to the series of brake that you mounting plate assembly or existing arc suppression module Observe the style of brake you have and follow the method of installation shown in the appropriate figure 55 000 Series Remove housing nuts 15 by unscrewing from housing studs 150 Remove housing 7 by pulling back 55 200 Series a Remove wraparound sheet metal housing 7 by turning wing nut or latch counterclockwise until the latch releases b Open housing and slide over the brake or away from the floor stand 34 55 500 and 57 500 Series Remove housing nuts2. 15 by unscrewing from housing studs 150 Remove housing 7 by pulling back Copyright 1999 by Rexnord Industries Inc Rexnord Industries Inc Stearns Division 5150 S International Dr Cudahy Wisconsin 53110 414 272 1100 Fax 414 277 4364 connected to the two terminal screws of the DC switch in parallel with the two leads from the coil Polarity is immaterial 55 700 Series _ a Remove housing 7 by unscrewing nuts from the four mounting studs 128 that protrude through the reducer flange b Grasp the coupler brake and motor as a unit and pull free from the reducer c Pull housing from the mounting studs 128 These studs are threaded into the C face and should remain in place 87 000 87 100 and 87 400 Series Remove manual release knob 148 two housing nuts 15 and housing 7 by pulling back 87 200 Series a Remove any accessories sprockets sheaves etc from brake shaft on housing side b Remove manual release knob 148 two housing nuts 15 and housing 7 by pulling back have 87 700 Series a Remove the brake and motor as a unit from the gear reducer b Remove four housing cap screws 15 lock washers 15W housing 7 and shaft assembly by pulling back 81 X00 82 X00 and 86 X00 Series Remove manual release knob 148 two knobs on 86 X00 Remove all the housing screws 15 and washers 15W Pull the housing 7 off
3. Stearns Brake Replacement Parts Service Instructions for DC Arc Suppression Module Kit P N 8 078 955 08 effective 8 20 99 Series 55 X00 57 500 87 X00 81 X00 82 X00 and 86 X00 Disc Brakes Note Two kits are required on 86 X00 Series Table Components 87 X00 Series au Item Description Qty Arc suppression module Cable strap Terminal connector Cap screw 10 24 x 5 8 Machine screw 6 32 x 3 8 Flat washer 6 55 000 55 200 55 400 55 500 and 57 500 Series existing lower right hand 6 32 tapped hole of solenoid frame bracket is ultilized 81 X00 and 82 X00 Series existing 10 24 tapped hole is utilized where shown LRR Ten raid dh l y il i J Os i 86 X00 Series existing 10 24 tapped holes are utilized where shown 3 MEN A 55 700 Series solenoid frame JENN J bracket Drill and tap location to mount AU F F QA O ej internal arc suppression module if not provided Important Please read these instructions carefully ii before servicing your Stearns brake Failure l l to comply with these instructions could cause injury to personnel and or damage to property 36 drill 6 32 tap if the brake is serviced or operated incorrectly For definition of limited warranty liability contact Rexnord Industries Inc Stearns Division 5150 S International Dr Cudahy Wisconsin 53110 414 272 1100 Caution 1 Servicing shall be in compliance with applicable loca
4. l 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 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 3 Be careful when touching the exterior of an operating brake Allow sufficient time for the brake to cool before disassembly Surfaces may be hot enough to be painful or cause injury 4 Do not operate brake with housing removed All moving parts should be guarded 5 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 6 Maintenance should be performed only by qualified personnel familiar with the construction and operation of the brake 7 For proper performance and operation
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