Portable Sanitation Association International

Association Insight September 30, 2020

Issue link: http://psai.uberflip.com/i/1293694

Contents of this Issue


Page 2 of 24

ASSOCIATIONINSIGHT Portable Sanitation Association International News BIWEEKLY EDITION SEPTEMBER 30, 2020 Page 3 Maintaining Pumps and Troubleshooting Issues…continued from page 1 Continued on page 4 Follow a Regular Maintenance Program To keep the pump in working condition, operators should conduct 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 assume it is empty. Check for a valve blockage. » 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 operation 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. » The oil catch muffler must be drained when it runs for a long period of time (approximately 2 hours). Excessive use will cause oil to accumulate within the muffler. Follow this procedure to avoid having oil blown through the muffler and onto the ground. » The secondary shut-off should be drained after every use to avoid accumulation. • Weekly: » Flush the pump weekly with flushing fluid, or any time liquids or solids have been allowed to enter the pump. » Check and clean the inlet filter. Ensure the filter is completely dry before refitting. This checking process must be done any time contamination may have entered the system. » Check to ensure the pump RPM is within the recommended range. Running the pump too fast or too slow may cause damage. » Wash any dirt off the pump as it needs to be clean to allow heat to radiate and prevent it from overheating. • Annually: » Check bolt mountings, drive coupling alignment and condition, and vane wear. • Storage: » If the pump is to be sitting for an extended period of time it needs to be flushed prior to storage. Common PRV Components

Articles in this issue

view archives of Portable Sanitation Association International - Association Insight September 30, 2020