Pumps & Conveying System Components Chapter 3: Installation 23
• Use piping or ducting at least two (2) diameter sizes larger than the vacuum
connection. Overall vent pipe length—horizontal plus vertical—should not exceed 100
feet (about 30 m) and should not include more than three (3) elbows. If you use pipe
for venting, make sure that you use Sch. 5 or Sch. 10 pipe with long radius elbows to
provide minimum airflow resistance. If you use ducting, make sure you use high-
pressure ducting with mitered bends—with a minimum of three (3) breaks—for
minimum airflow resistance. Make sure all piping connections are properly supported.
• If you are venting pump discharge outdoors, make sure you properly terminate vent
piping to prevent pump damage. You can either:
a. Install a rain cap, or
b. Install the piping so the exhaust faces down and terminates with a screened
opening.
Note: If the pump becomes contaminated from rain or airborne particulates,
or is damaged by birds, insects, or small animals, your warranty
becomes void!
Any variance from these guidelines can cause excessive pump back
pressure. Such a condition can drastically affect equipment
performance, possibly leading to equipment damage.
Installing the Control Panel
Select a flat, vertical area for mounting the panel. It should be in an area that gives your
operator access to the control. Consider how you are running wiring to the vacuum hoppers,
the filter chamber, and pump motor starter(s), vacuum switch(es), and vent valve(s). The
panel requires a low voltage grounded power drop as listed on the serial tag.
Note: Avoid mounting control panel near material lines.
Installing Material/Vacuum Tubing
Well-designed material/vacuum piping systems provide the best conveying rates.
Vacuum/material piping may be a single material line Y system or multiple material line or a
combination of the two systems (See figures 8-10 on page 26 and 27 for examples),
depending on the processing floor layout. All systems utilize a common vacuum header line
for all stations connected to a pump package; material flow is controlled by sequence T or
atmospheric valves operated by the control panel. When installing material/vacuum tubing,
take the following into consideration:
• Vacuum leaks anywhere in the system reduce system capacity.
• Keep the number of material tube bends, elbows, Y-tubes, and vacuum T-tubes to a
minimum for maximum system capacity.
• Use long radius tube bends on material lines.
• Keep the total length of material conveying flex hose to a minimum. Long flex hose
material runs reduce system capacity.
• Vertical material tubing runs should be straight up. Inclined runs can reduce capacity.
• Support tubing about every ten feet with straps, pipe hangers, or brackets.
• Tube joints must be rigid to prevent vacuum or material leaks.
