Warner Electric PTB-BL3 - Manual (Page 3)

3 Warner Electric • 800-825-9050 819-0368
Installation Instructions
Introduction
Verify the model of your clutch or brake by
checking the label before proceeding with these
instructions. POC and PHC-R designate clutch
models and POB and PTB are brakes. All mod-
els of POC clutches are face mounted (except
size 80, which is foot mounted) and have male
input and output shafts. See Figures 1 and 2.
The PHC-R clutch is designed to be shaft
mounted and is ideal for "parallel shaft" applica-
tions. It has a hollow bore and slides on the out-
put shaft. An input hub with flange is provided
for mounting a pulley or sprocket. An integral
fan rotates with the input for additional cooling.
See Figure 3.
POB and PTB-BL3 brakes are face mounted
with male input shafts. Like the POC's, only the
size 80 is foot mounted. The major difference
between PTB-BL3 and POB brakes is that PTB-
BL3's utilize a patented heat pipe cooling
method that provides heat dissipation several
times greater than conventional cooling. See
Figures 4, 5, and 6 for mounting information on
POB's and PTB-BL3's.
Pre-Mounting
Note: Unit performance can be affected by
prolonged exposure to humid environments.
Please store in a dry location.
Note: The equipment covered by this service
manual must be installed in accordance with
these instructions. Failure to do so may dam-
age the equipment and void the warranty.
1. Remove the Magnetic Particle unit from its
shipping carton and inspect it thoroughly to
ensure that it has arrived in good condition.
When handling, please take care not to dam-
age the unit’s lead wires or terminal block.
2. Check the input shaft/hub to make sure it
can be rotated by hand. On clutch assem-
blies, hold the output stationary while turning
the input. The powder inside the unit may
settle due to shock and vibration incurred
during shipping, making rotation difficult. This
is easily remedied by turning the unit upside
down and gently tapping the housing to
loosen the powder. Do not hit shaft. See
page 10 for nominal drag torque values.
3. Make sure the location chosen for mounting
will not expose the unit to water or oil. If
water or oil enters the powder cavity, per-
formance may be affected. If the unit is
mounted next to a gearbox, special care
should be taken to prevent oil from working
its way into the unit.
4. If couplings are to be used in the drive sys-
tem, the mounting surface must properly
locate the housing to ensure alignment is
within coupling tolerances.
5. When connections are made with pulleys or
sprockets, the overhung load must be veri-
fied to be within rating. See page 8 for allow-
able overhung load information.
Mounting
Note: Do not use excessive force when mount-
ing couplings, pulleys, or sprockets on shafts.
Note: For proper function, magnetic particle
units must be mounted so the shaft is horizon-
tal.
Use the proper mounting method described for
the model being installed.