Industrial Vacuum Tankmount Systems
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599500AV • 20 October 2020
Page 5 of 20
Control Panel
The NEMA 1, UL listed control panel is provided in
simplex or duplex configurations. Both utilize a 120V AC
control transformer with fused primary and secondary
circuit. The pumps are signaled to come on cycle by an
adjustable vacuum switch or switches. The switches
have a fixed “dead band” of approximately 3 in Hg.
All Powerex vacuum systems employ minimum run
timers via a PLC or time delay relay for each pump.
Minimum run timers will assure that no more than
six starts per hour can occur on each pump. If the
vacuum level is sufficient and the minimum run timer
is satisfied, the pump will automatically turn off. The
minimum run timer prevents rapid stopping and
starting that can damage the motor, coupling or other
pump components and helps keep the pump warm for
dissipation of moisture in the process stream. A duplex
unit employs timed alternation via the PLC or timer to
maintain even run hours on each pump.
The control panel is provided with a HOA (hand-off-
auto) switch and hour meter for each pump. A high
temperature sensor is included to detect harmful
conditions and shut off the pump. The high temperature
circuit must be manually reset if triggered. Controls will
automatically restart if power is lost and restored.
System Check Valves
In addition to the anti-reverse flow valves incorporated
into the body of the pumps, the Powerex IBVS and IBVD
systems have system check valves to preserve vacuum
in the receiver and process lines when the pumps are
turned off.
Intake Filters
The intake filters protect against particulates that
could damage the pumps. Elements are replaceable
and are design to resist collapse.
The filters do not prevent damaging
liquid induction into the pumps.
Relief ports are provided so that covers can be removed
without waiting for vacuum to decay by leakage.
Optional Lined Receiver Tank
A corrosion resistant tank lining is offered for
applications where this characteristic is desired.
Inlet Ball Valve
The system inlet has an isolation ball valve installed
for convenient service.
Drip Leg
The pump exhaust fittings are supplied with a pipe
tee where the down facing leg is fitted with a drain
valves to facilitate draining any condensed liquid that
accumulates in the exhaust piping. The exhaust piping
should be installed so that liquids that condense are
not drained back to the pump.
Vibration Isolation Mounting Pads
The pumps have inherently low vibration due to the
rotary design. Vibration isolation mounting feet are
incorporated into the pump design so that even these
minimal vibrations are not transmitted into the frames
and tanks. Cork-rubber composite mounting pads may
be installed under the tank feet or base platform if
desired, but are not required for system operation.
Optional Auto-Purge Controls
For processes where it is undesirable to leave process
gas in the pumps on shutdown, Auto-purge controls
in an NEMA 4 enclosure are available. The auto-purge
cycle isolates the pump from the process flow and
flushes it with clean air before shutting it down.
Optional Nema 4 control enclosure with standard
controls is also available.
Optional Flex Hoses
Systems can be ordered with flexible stainless steel
(convoluted type) hoses with NPT-male ends for ease of
connection to facility piping.
Summary of Contents for IBVD0153 Series
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