Watts AERCO Benchmark OMM-0136 - Page 123

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 8 – MAINTENANCE
OMM-0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 123 of 153
TABLE 8-3: Recommended Periodic Testing
ITEM
FREQUENCY
ACTION BY
REMARKS
High water temp.
safety control test
Annually
Service Tech
See Section 5.5: Water Temperature Fault Test
in this guide.
Operating controls
Annually
Operator
See Section 2: Edge Controller Operation in this
guide.
Low air flow
Monthly
Operator
See Section 5.8: Air Flow Fault Tests and
Section 8.9: Air Filter Cleaning and
Replacement in this guide.
High and low gas
pressure interlocks
Monthly
Operator
See Sections 5.2: Low Gas Pressure Test and
5.3: High Gas Pressure Test in this guide.
Air/Fuel Valve purge
position switch
Annually
Service Tech
See Section 5.10 Purge Switch Open During
Purge in this guide.
Air/Fuel Valve
ignition position
switch
Annually
Service Tech
See Section 5.11: Ignition Switch Open During
Ignition in this guide.
Safety valves
As required
Operator
Check per A.S.M.E. Boiler and Pressure Vessel
Code, Section IV.
Inspect burner
components
Semi-Annually
Service Tech
See Section 8.7: Burner Inspection in this guide.
Condensate Trap
Semi-
Annually
Operator
See Section 8.8: Condensate Drain Trap in this
guide.
Oxygen (O
2
) Level
Monthly
Operator
Verify oxygen level is between 3% and 8%
during boiler operation.