Watts AERCO Benchmark 2.0, User Manual

Page: 93 / 97

APPENDIX I
I-1
RECOMMENDED PERIODIC TESTING CHECK LIST
WARNING
NOTE: Periodic testing of all boiler controls and safety devices is required to determine that they are operating as
designed. Precautions shall be taken while tests are being performed to protect against bodily injury and property
damage. The owner or user of an automatic boiler system should set up a formal system of periodic preventive
maintenance and testing. Tests should be conducted on a regular basis and the results recorded in a log-book.
Item Frequency Accomplished
by
Remarks
See indicated sections of this manual for detailed procedures
Gages, monitors and
indicators
Daily Operator
Make visual inspection and record readings in
operator log
Instrument and
equipment settings
Daily
Make visual check against factory recommended
specifications
Weekly Operator Verify factory settings
Firing rate control Semiannually
Service
technician
Verify factory settings
Annually
Service
technician
Check with combustion test equipment- see
section 7.4
flue, vent, stack or
intake air duct
monthly Operator Visual inspection for condition or obstructions
Igniter Weekly Operator see section 7.2
main fuel valve
valve position Weekly Operator Check position indicator
leakage test annually
Service
technician
Close manual fuel supply valve and test for
pressure on down stream valve port
Combustion safety
flame failure weekly Operator
Close manual fuel supply valve check safety
shutdown timing
flame signal strength weekly Operator Read signal with meter and log see section 7.3
low water fuel cut off
and alarm
weekly operator See section 6.3
slow drain test Semiannually operator
Perform a slow drain test in accordance with
ASME Boiler and Pressure
Vessel Code section IV
high limit safety control
test
annually
Service
technician
See section 6.4
operating control annually Operator See section 3.2
low air pressure monthly Operator See section 6.6
high and low gas
pressure interlocks
monthly Operator See section 6.2
air valve purge position
switch
annually
Service
technician
See section 6.6
low fire position switch Annually
Service
technician
See section 6.7
safety valves as required Operator
As per A.S.M.E. Boiler and Pressure Vessel
Code section IV
inspect burner
components
Semiannually
Service
technician
See section 7.6