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Maintenance
Maintenance Schedule
Perform the following procedures at the recommended intervals at a minimum. Environmental conditions determine the maintenance intervals. Inspect the
components frequently, and create a maintenance schedule suitable to your application and environmental conditions. Replace wear components with equivalent
components.
Operation
Operation
Weekly
Weekly
Monthly
Monthly
As Required
As Required Comment
Comment
Cycle fresh lubricant
X
Cycle lubrication when using Prime-Safe or other biodegradable lubrication.
Check lubrication line orifice
X
Check for obstruction the impedes airflow.
Vacuum testing
X
Perform a vacuum test monthly.
Priming valve spring and seals
X
Replace the wave spring and seals as required.
NFPA testing
X
Test per NFPA requirements.
Vacuum Testing
Perform the following test monthly:
•
Remove all caps except openings without valves.
•
Close all intake, discharge, drain, and similar openings.
•
Operate the priming system to create a vacuum of 22 inHg.
•
If the vacuum pressure drops 10 inHg in 5 minute inspect areas around the
packing glands, gaskets, and valves for leaks.
Priming Valve
Replace the wave spring and seal once a leak is detected.
Priming Tank
Verify that the orifice at the top of the lubrication tank is not impeded.
Priming Pump
When using biodegradable/non-toxic lubricant, operate the priming pump
weekly to refresh any degraded lubricant. Also, verify that the orifice in the
lubricant line is not impeded. Over time, the wear on the housing and vanes
diminishes pump efficiency. Replace wear items when the vacuum test is
unable to produce a vacuum of 22 inHg. Make sure that no other leaks are
hindering vacuum generation. Contact Waterous for the appropriate repair kit.
Summary of Contents for VPO Priming System
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