PVI Industries PV500-45U - Manual (Page 40)

40
PV500-45U 06/12
18 RECOMMENDED MAINTENANCE SCHEDULE
1. Annual Maintenance
a. Check all joints and pipe connections for tightness, corrosion or deterioration.
b. Check the electronic-ignition system for quick ignition and a proper flame signal.
c. Check all safety controls including thermostats for proper operation.
d. Check safety shut-off valves for operation and tightness.
e. Test flame failure detection system.
f.
Test high limit and operating temperature controls.
g. Conduct a combustion test.
h. Perform leakage test on pilot and main gas valves.
i.
Test air switch in functionality.
2. Semi-Annually
a. Recalibrate all indicating and recording gauges.
b. Check flame failure detection system components.
c. Check firing rate control.
d. Check piping and wiring of all interlocks and shutoff valves.
e. Inspect burner components.
f. Check
igniter.
g. Test high and low gas pressure interlocks.
h. If equipped, check air filter and replace if required.
3. Monthly Maintenance
a. Test low-water cutoff device and alarm (if equipped).
b. Check flue, vent, stack, or outlet dampers.
c. Check flame signal strength.
d. Check flame failure detection system.
e. Check firing rate control.
f.
Listen to and visually check the pilot and main fuel valves.
4. Daily Maintenance
a. Check gauges, monitors, and indicators.
b. Check instrument and equipment settings.
5. As Required
a. Check drip leg and gas strainers.
b. Test flame failure detection system.
c. Test temperature and pressure relief valves in accordance with ASME Boiler and Pressure Vessel
Code Sections VI & VII.
d. Tank flush and cleanout.