Altra Industrial Motion Warner Electric PB-400 설치 지침 매뉴얼 - 페이지 8

{카테고리_이름} Altra Industrial Motion Warner Electric PB-400에 대한 설치 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Altra Industrial Motion Warner Electric PB-400 18 페이지. Primary brakes

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Burnishing and Maintenance

Burnishing

Intimate metal to metal contact is essential between

the armature and the metal rings (poles) of the magnet

or rotor . Warner Electric clutches and brakes leave the

factory with the friction material slightly undercut to

assure good initial contact .

Normally, the desired wearing-in process occurs naturally

as the surfaces slip upon engagement . The time for

wear-in, which is necessary to obtain the ultimate torque

of the unit, will vary depending on speed, load, or cycle

duty .

If maximum torque is required immediately after

installation, the unit should be burnished by slipping

the friction surfaces together at reduced voltage . It is

recommended that the burnishings be done right on the

application, if at all possible .

Burnishing at high speed will result in a smoother wear-in

pattern and reduce the time for burnishing . The voltage

should be set at approximately 30% or 40% of the rated

value .

The unit should be cycled on and off to allow sufficient

time between slip cycles to prevent overheating .

When a Warner Electric brake or clutch is properly as-

sembled and installed, no further servicing, lubrication,

or maintenance should be required throughout the life of

the unit .

8 Warner Electric • 800-825-9050

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Call +1(800)985-6929 To Order or Order Online At Warnerelectricparts.com

Maintenance

Wear Pattern: Wear grooves appear on the armature

and magnet surfaces . This is a normal wear condition,

and does not impair functioning of the unit . Normally,

the magnet and armature, as a mating pair, will wear at

the same rate . It is the usual recommendation that both

components be replaced at the same time .

Remachining the face of a worn armature is not rec om-

mended . If a replacement armature is to be used with

a used magnet, it is necessary to remachine the worn

magnet face . In refacing a magnet: (1) machine only

enough material to clean up the complete face of the

magnet; (2) hold the face within .005" of parallel with

the mounting plate; and (3) undercut the molded facing

material .001" - .003" below the metal poles .

Heat: Excessive heat and high operating temperatures

are causes of rapid wear . Units, therefore, should be

ven ti lated as efficiently as possible, especially if the

application requires fast, repetitive cycle operation .

Foreign Materials: If units are used on machinery

where fine, abrasive dust, chips or grit are dispelled

into the atmosphere, shielding of the brake may be

necessary if maximum life is to be obtained .

Where units are used near gear boxes or transmissions

requiring frequent lubrication, means should be provided

to protect the friction surfaces from oil and grease to

prevent serious loss of torque .

Oil and grease accidentally reaching the friction surfaces

may be removed by wiping with a rag dampened with a

suitable cleaner, which leaves no residue . In performing

this operation, do not drench the friction material .

P-201-WE • 819-0480