W EEKLY EDITION MAY 15, 2019
Maintaining Pumps and Troubleshooting Issues in
Portable Sanitation Operations
By the PSAI Training Committee
F o ll o w a R e gu l a r M ai n te n a n c e P ro g ra m
To keep the pump in a workable condition operators should undertake
regular maintenance and keep a written log of those checks.
Before Starting the Pump:
Ensure a vacuum relief valve and a pressure relief valve are
installed in the system and adjusted to recommended
settings, taking into account the altitude of the job location.
Always bleed the tank to atmospheric pressure before
switching the valve from vacuum to pressure or from
pressure to vacuum.
Every Load:
Drain the scrubber after each tank load. If nothing drains
when the ball valve is opened, never assu me it is empty.
Check for a blockage in the valve.
Check the oil level in the oil reservoir and fill as required.
Monitor vacuum/pressure and temperature gauges to detect any irregularities or problems.
Daily:
Add oil approximately every 10 hours of opera tion or when the oil reservoir shows the level is
low. Only use approved lubricants.
Drain the oil separator twice daily. A brass ball valve is mounted at the bottom for easy
draining.
P AGE 2
CONTINUED ON PAGE 10
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Common PRV Components
