MHS Boilers XenoROL XR40, Инструкция по установке, эксплуатации и обслуживанию, Страница: 40 / 84

XenoROL®
40
AIR SUPPLY REQUIREMENTS
AIR CONSUMPTION
The highest air consumption is when several
devices are operating simultaneously.
Formulas to determine cubic feet per minute (CFM)
air consumption for various devices (at 60 PSI) are
as follows:
UBTs
Std. & Opp. 30" Wide or Less w/4 Belts =.028 CF
Std. & Opp. 36" Wide or More w/4 Belts =.045 CF
Std. & Opp. 30" Wide or Less w/3 or 5 Belts =.045 CF
Std. & Opp. 36" Wide or More w/3 or 5 Belts =.087 CF
Bi-Dir. 30" Wide or Less w/3, 4 or 5 Belts =.045 CF
Bi-Dir. 36" Wide or More w/3, 4 or 5 Belts
Other Devices
XR40 36 " =.0082 CF
XenoBRAKES 24 or less " =.0056 CF
XR48 24 to 27" " =.011 CF
XenoBRAKES 18 or less " =.0082 CF
Locating Stop XR40 =.0056 CF
Roller Stop XR40 & XR48 =.026 CF
XenoSWITCH XR40 =.038 CF
Compressor HP = Total CFM requirements ÷ 3.55
Air Tank Size = Approx. 1 gal. per required CFM
PRESSURE SWITCH
An air pressure switch is recommended to be
installed into the pneumatic circuit to detect a drop in
air pressure below required levels. This signal is
used to safeguard the operation of the system. The
switch should be set at a PSI level which ensures
operation of all devices. If pressure drops below
approximately 60 PSI the conveyor system will shut
off.
GENERAL
Every conveyor system is unique with its own
specific requirements. Therefore, the following is a
general guide. Compressed air for conveyor
systems is produced by air compressors. Air is
pumped by the compressor into a storage tank and
accumulated for future use. Pressure is usually
about 100 PSI in the tank and main feeder line.
MAIN FEEDER: Air velocity through the main feeder
piping can be kept smooth with lower losses using
large diameter pipe with minimum bends and
restrictions. The main feeder carries the
compressed air overhead to all points of use.
Standard weight black pipe or copper is suitable for
plumbing the compressed air distribution system.
AIR DROPS:
MHS Conveyor
recommends
using 3/4" pipe on air drops for high flow and low
pressure loss. The drop is terminated with a
drain at the bottom. A tee located prior to the
drain branches off the drop to the conveyor.
This branch line must contain a lockout/shutoff,
filter and regulator. A shutoff must also be
located in the drop before the branch tee. OSHA
Rule 29, CFR1910.147 requires energy sources
(air drops) be turned off and capable of being locked
or labeled with a warning tag.
Following the regulator, the air line is reduced to
3/8" diameter for most applications, feeding the
solenoid valves. If the quantity of devices or the
air demand is high, 1/2" diameter may be used.
Between the solenoid valves and devices, such
as UBTs, 1/4" diameter is normally used. 3/8"
diameter may be used for high air volume devices
such as pushers.
Note : Most pneumatic devices do not
require lubrication. Lubrication may affect the
valving operation and cause sluggish or erratic
operation. Some special devices with large air
cylinders do require lubrication. These must be
isolated with their own lubricator.
Important : If your air compressor uses a
synthetic oil, a coalescing filter plus a regular filter
of 5 micron is required before any air operated
device. Synthetic oils will shrink the seals in
pneumatic devices and valving.
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