Specifications

MAGNETIC BRAKE SUB ASSEMBLY NOTES

PART C

(PART #256130003)

Before connecting coil to rectifier, hi-pot test coil between steel parts and coil lead wires. There

shall be no current leakage with 1500 volts A.C. for 1 second; note that only two tests are

permissible per assembly.

Alum. cover strip must not extend above steel poles.

Micro switch shall be turned on within 3° beam movement when lifted from the down position.

Upon lowering the beam from the 90° position the micro switch shall turn off within 15° beam

movement. Adjustments made with noted part.

Noted handle is installed only for testing the brake and setting the angular scale. When moving

beam up to 180° and returning to 0° position there shall be no binding or beam misalignment

through hinges.

Noted surfaces free of blue paint. Remainder of brake paint blue #51-5-017.

Testing procedure:

A. Place full length keeper (painted) on the brake magnetic surface. With 115 volts A.C. switch

power on and check pilot light indication.

B. Press the safety button to apply light clamping. The keeper should pull down. If not, then

check for foreign matter under keeper, lifting detent sticking, excessive bow in keeper, non

flat magnetic surface, etc.

C. Turn on main magnetic field by pressing safety button and slightly pulling beam handle

beyond 3° movement. Measure the current draw. Should be 12 amps + 10% but will

decrease as coil heats up. Leave the current on until the thermal overload trips. That takes

1 to 3 minutes.

D. Make a full length bend with 18 gage mild steel and make sure keeper does not pop off and

bend is straight with a uniform bend angle. Bend radius shall not exceed 5/32”.

E. Fill out inspection sheet to be signed by foreman.

Noted parts must be assembled to hinge assembly before installing on bending brake.

Press pin flush with top surface of hinge plate. Grease pin nose.

Noted surfaces free of yellow paint. Remainder of keeper paint yellow #51-4-239.

Press flush with top surface of keeper.

Ensure that mating (spherical radius) surfaces of hinge block and pin are in firm contact

throughout entire travel. If necessary flatten spring with punch.

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