AEC Continuous Vacuum/Pressure Conveying Systems - Manual (Page 52)

Single- and Dual-Blower Continuous Vacuum/Pressure Systems Page 51
Motors
No lubrication is required.
Rotary Airlock
After the first six months of operation, lubricate the airlock rotor shaft bearings with
good quality grease every three to six months at the grease fittings provided. Do not
over-lubricate!
Compressed Air Lubricator (Optional)
Check the lubricator for the vacuum unit compressed air supply daily for oil level.
Refill as needed with proper lubricant.
6-3 Periodic Service
The following section lists suggested periodic service for single- and dual-blower
vacuum/ pressure systems. The service schedule for your particular application is
determined by the material you convey and the operating environment.
Weekly Checks and Inspections
; Check motors for excessive noise or vibration.
; Check all hoses and pipe connections for tightness and leaks.
; Check all filters for dirt or wear; clean or replace as needed.
Monthly Checks and Inspections
; Check wiring for secure connections, frayed insulation, etc.
; Check the muffler on the vacuum unit for material particles that may have
plugged internal openings. This indicates poor filter maintenance at the filter
chamber or filter receiver. Fines may also enter the muffler during the
blowback cycle of solid state units if poor housekeeping conditions exist at the
unit. Material in the muffler can present a fire hazard. If you find any material,
replace the muffler.
; Check the motor and blower sheave bolts on the vacuum and pressure units.
Tighten them to 72 foot-pounds (98 N•m) of torque.
Quarterly Checks and Inspections
; Check the motor/blower drive belt on the vacuum and pressure units for signs
of wear and proper tension. Replace the belt if it shows any sign of wear.
; Clean the motor vents with a soft cloth or vacuum.