MHS Boilers XenoROL XR40, Инструкция по установке, эксплуатации и обслуживанию, Страница: 35 / 84

XenoROL®
35
XenoBRAKES
XenoBRAKES are used to stop XenoROL® rollers
by clamping them from below. XenoBRAKES are
mounted to the inside of the side channel between
crossmembers and slightly below the bottom of the
rollers. They are raised by single acting spring
return air cylinders which raise the brake against the
bottom of the rollers when air is applied to the
cylinders.
The pneumatic control may be manually actuated
through a selector or toggle switch. Automatic
operation uses a photoeye and solenoid valve
combination or a mechanical pneumatic sensor may
be used.
The rollers may be stopped to hold product in
position, to stage product for a workstation
operation, to index product for traffic control, or to
allow for accumulation. When a brake is used for
holding line pressure (minimum pressure
accumulation), the rollers should be plastisol coated
to increase the product's resistance to being pushed
over the brake zone area. When activated, the
brake brings product to a gentle sliding stop. The
brake can be actuated at any time. However, the
lighter the product, the less effective the brake is in
resisting line pressure. Brakes used with roller
coating have a rubber pad as the roller contact
surface. Brakes used against steel rollers have two
strips of urethane tubing (hose) to better grip and
stop the rollers.
To ensure total stoppage of the rollers over the
brake, air pressure should be set at approximately
60 PSI. If required, this may be increased to a
maximum of 80 PSI.
Normally, XenoBRAKES are factory mounted in the
conveyor bed; however, they may be purchased
separately and mounted during installation. A brake
is preassembled with the air cylinders and
connecting air line to a "T" fitting. The brake
mounting bracket holes match up with the holes
between crossmembers on the side channel. This
makes it easy to install a XenoBRAKE or move it if
required. The brake length is designated by the
center to center distance of the crossmembers it
mounts between, not the actual length of the upper
channel (i.e. a 36" brake measures
approximately 34" long).
ALIGNMENT ADJUSTMENT
XenoBRAKES may require alignment and squaring
to the bottom surface of the rollers. To accomplish
this the XenoBRAKE mounting bolts (2 per bracket)
must be loosened. The brake is then air activated
so it contacts the underside of the rollers. While
being held against the rollers, the mounting bolts are
tightened. After this adjustment, the brake will
operate smoothly with roller contact along its entire
length.
A flow control valve may be used to reduce
actuation noise due to the space between the
XenoBRAKE pad and the rollers.
The XenoBRAKES shown have urethane tubing over the channel to brake steel rollers. XenoBRAKES 2’-0” in length and
under have one air cylinder. All brakes are located between crossmemebers
WARNING
XenoBRAKES are pneumatically actuated.
Personal injury can result if fingers are
placed between rollers and brake pad while
system is in operation. Be sure electrical and
pneumatic power is removed before
attempting any maintenance on this system.
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