Thermal Solutions EVO-500 Installation, Operating And Service Instructions page 50

C.
PERIODIC MAINTENANCE RECOMMENDED CHECK LIST
Frequency
Boiler surroundings
Gauges, monitors, and indicators
Daily
Combustion Properties
Maintenance
Burner flame
Low Draft, fan air pressure, and damper
position interlocks
Igniter
Flame signal strength
Flame failure detection system
Weekly
Firing rate control
Maintenance
Pilot and/or main fuel valves
Low-water fuel cutoff
Flue, vent, stack, condensate drains,
and outlet dampers
Monthly
Gas pressure interlocks
Maintenance
Water condition
Gauges, monitors, and indicators
Flame failure detection system
Condensate drain tubes
Semi-Annual
Air filter
Maintenance
Interlocks and valves
Circulators and system pumps
Flue, vent, stack, or outlet dampers
Combustion Properties
Flame failure detection system
Pilot and/or main fuel valves
Annual
Maintenance
Pilot and/or main fuel valves
Flame safeguard
Air Filter
Boiler trim
High limit and operating temp. controls
Low-water fuel cutoff
As-Required
Safety relief valves
Component/Item Recommended Test
Inspect the area to assure proper clearance to combustible materials,
gasoline, and other flammable vapors and liquids.
Make visual inspection and record readings.
Check combustion properties as specified in section VII, part D.
Make visual inspection of burner flame as stated in section VII, part D.
Test low draft, fan, air pressure, and damper position interlocks
according to instructions if so equipped.
Make visual inspection, check flame signal strength; log.
Read and log flame signal meter, read for both pilot and main flames.
Close manual fuel supply for (1) pilot, (2) main fuel cock, and/or
valve(s); check safety shutdown timing. Refer to section VII, Part D.
Check firing rate control, place RWF 40 in manual mode and check
high and low firing settings for proper operation.
Open limit switch and make aural and visual check; check valve
position indicators and check fuel meters if so fitted.
Test low-water fuel cutoff device and alarm according to
manufacturer's instructions.
Confirm that components are gas tight and free from obstructions to
flow.
Test high and low gas pressure interlocks.
Test condition of water, correct condition as needed.
Recalibrate all indicating and recording gauges.
Check components.
Check drain tubes have liquid in trap and condensate is properly
directed.
Check air filter as specified in section VII, Part D.
Check piping and wiring of all interlocks and shut off valves if so
equipped.
Maintain according to manufacturers' instructions.
Confirm that components are gas tight and free from obstructions to
flow.
Check combustion properties as specified in section IV, Part I, Step 5.
Conduct pilot turndown test according to manufacturer's instructions.
This test is required annually and after any adjustments to flame
scanner mount or pilot burner.
Check all coils and diaphragms; test other operating parts of all safety
shutoff and control valves.
Perform leakage test on pilot and main gas and/or oil fuel valves, in
accordance with instructions.
Test purge timing according to manufacturer's instructions.
Replace.
Remove lower front jacket panel and check for any signs of corrosion
and leaks.
Test proper operation.
Recondition or replace.
Test safety relief valves in accordance with ASME Boiler and Pressure
Vessel Code, Sections VI and VII.
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