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6 Maintenance
Preventative Maintenance
NOTICE! Proper maintenance schedule and record
keeping is critical for optimum performance and to
maintain the Patterson-Kelley warranty.
NOTE: The combustion blower motor is permanently
lubricated and does not require periodic lubrication.
6.1.1 Daily Preventative Maintenance
Observe operating temperature and general conditions. Make
sure that the flow of combustion and intake air to the appliance is
not obstructed. Determine the cause of any service codes or
®
lockouts on the NURO
unusual noises or operating conditions and make the necessary
corrections. Notify responsible individuals for required corrective
action or repair.
6.1.2 Weekly Preventative Maintenance
Observe the conditions of the main flame. A normal high fire
flame is mostly orange with a blue halo. A normal low fire flame
will glow reddish-orange. However, do not attempt to adjust the
flame "by eye".
Correct air adjustment is essential to the efficient operation of this
appliance. Ensure that the flow of combustion and ventilation air
is not obstructed. If an adjustment in the combustion appears
necessary, the flue gas composition should be checked with a
carbon dioxide (
) or oxygen (
CO
2
the values stated in the Combustion Setup and Adjustment
combustion settings table in Section 3.11.2. If an adjustment to
the combustion is necessary, call a qualified and knowledgeable
installer or service agency that has been trained on the -Kelley
appliance.
Revised: January 3, 2020
Released: January 3, 2020
touchscreen display. Observe any
Check daily to be sure that the
immediate area around the boiler or
water heater is free and clear of any
combustible materials, including
flammable vapors and liquids.
) analyzer and compared to
O
2
Patterson-Kelley 2020
All Rights Reserved.
®
P-K MACH
Technical Service 1.877.728.5351
Lockout/tagout procedure must
be employed when servicing
this unit. Failure to do so could
result in electrocution, injury, or
death.
Label all wires prior to
disconnection when servicing
controls. Wiring errors can
cause improper and dangerous
operation.
Use care when reassembling
main gas line and ensure all
connections are tight. Use a
leak detector to check for leaks
before and after servicing any
component of the gas piping.
Failure to do so could result in
injury or death.
Use care when servicing boiler
to prevent the accumulation of
gas in or around the combustion
chamber. Pockets of
accumulated gas are subject to
combustion and/or explosion
which could result in injury or
death.
Determine the cause of any
lockout or errors before
resetting the boiler. If able to
determine cause of lockout, take
appropriate corrective action. If
unable to determine cause of
the problem, call a qualified
service technician. Verify
proper operation after servicing.
Check daily to be sure that the
boiler area is free and clear of
any combustible materials,
including flammable vapors and
liquids.
1004905981 P-K MACH C1500H-C4000 Installation and
Owners Manual (Rev F Jan-2020).docx
Gas Fired Boiler
Page 61
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