AEC VacTrac Series Conveying Systems - Manual (Page 108)

Page 108 VacTrac™ Series Conveying Systems
WH2-605A.4 Mechanical Components
Problem Possible cause Solution
• Blower is dead-headed.
Check for obstruction.
• Vent valve is not operating.
Check for proper signal,
voltage, and 80 to 90 psi (552
to 621 kPa) compressed air.
• Worn seals in blower.
Rebuild/replace blower.
• Worn bearings in blower.
Rebuild or replace.
• Loose drive belt(s). Tighten or
replace if worn.
Follow the vacuum path from the
blower through the filter, piping,
valves and material receivers to
isolate where the loss occurs.
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.
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.
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.
• 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.