Domestic Plumbing PM
Domestic Plumbing
Preventive Maintenance
Start Up
- Within 2-3 days from start up; 1) remove and clean “flow clean strainers,
2) monitor system for any for any excessive vibration and 3) re-tighten all electrical
connections and control tubing compression fittings.
- If debris is present in the piloting tubing and sensing lines a more thorough cleaning
at the valve may be necessary .
Daily
- Check for normal system operation by monitoring system pressure and normal sequencing.
- Look, listen and smell for any unusual vibration, noise or odors.
- Check for leaks of the mechanical seals, controls valves or piloting tubing and components.
- Record and report any abnormal condition as soon as possible and take corrective actions as needed.
Weekly
- If lag pumps do not usually run on a regular basis, operate them in “hand”
for 10 minutes each.
- If an automatic alternator is not provided, manually alternate equal capacity pump.
- Purge air from control valve covers until clear water flows from ballcock.
Monthly
- Check incoming voltage for level and balance.
- Record suction and system pressures with a nominal demand on the pump station.
- Test all alarms.
- Exercise all ball, gate or butterfly valves.
Semi-Annually
- Check motor bearing and lubricate if necessary. Do not over
grease as this can cause premature bearing or winding failure.
- Check system sequencing by generating sufficient flow demand to automatically activate
pump station controls.
- Confirm proper operation of pressure switches and flow sensing devices. Adjust as needed.
- If a hydrocumulator tank was provided isolate and drain it to verify that the proper precharge is present (see system data sheet precharge information).
Annually
- Tighten all electrical and hydraulic connections.
- Check motor and wiring insulation value using a “megger”.
- Check motor winding resistance using an ohmmeter.
- Check motor amp draw of each motor under a nominal load.
- Disassemble and inspect pressure regulating valves. Clean and rebuild as necessary.
- Verify proper pump operation by producing and recording pump shut off/dead head pressure. Record the reading for future comparison.
- Wire brush, primer and paint any rust spots on skid, manifold, panel stand or pumps.
