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10. Troubleshooting
Problem Possible Cause Solution
High-vacuum alarm Filter element dirty. Clean or replace filter
Dump delay time set to
zero, or insufficient dump
delay time.
Set dump delay time to the time it
takes the largest vacuum hopper in
the system to dump.
Dusty material. Consult sales representative.
Filter element is
becoming
obstructed too
frequently by fines
and dust
Dusty material—optional
compressed air filter
cleaning may be needed on
filter chamber.
Consult sales representative
Filter chamber problem. The
vacuum at the filter chamber should
be the same as the blower
generates. If the vacuum at the
filter chamber is adequate, the
problem is down line.
Dirty filter. Clean or replace filter:
Loose clamps, gaskets, or
couplers. Tighten or replace.
Filter chamber discharge flapper
not sealing under vacuum. Check
for proper operation; clean or repair
as needed.
Vacuum conveying
rate is declining due
to a vacuum loss in
the system.
Pump package blower
problem. Use a cfm/cfh
monitoring device to ensure
that blower cfm/cfh is to the
manufacturer’s
specifications.
Check for faulty compressed air
blowback solenoid. Check for
voltage signal during cleaning
cycle, proper solenoid operation,
incorrect wiring, proper
compressed air connection, and for
worn plunger in valve.
Filters in the filter chamber
are dislodged, worn, or not
seated properly on the
gasket.
Replace or repair immediately. If
the exhaust silencer has material in
it, replace it to prevent fire hazard
Material is sucked
from the filter
chamber and
through the blower.
The material conveyed is
not what the system was
designed to convey. Very
dusty materials have
different conveying needs.
Consult the sales representative for
advice on hardware requirements.
