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6 Maintenance
6.1 Preventative Maintenance
NOTICE! Proper maintenance schedule and record
keeping is critical for optimum performance and to
maintain the Harsco Industrial, Patterson-Kelley
warranty.
NOTE: The combustion blower motor is permanently
lubricated and does not require periodic lubrication.
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.
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 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 Harsco
Industrial, Patterson-Kelley appliance.
Revised: June 2, 2017
Released: June 2, 2017
®
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
HARSCO Industrial, Patterson-Kelley 2017
All Rights Reserved.
®
P-K SONIC
Gas Fired Boiler
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 the
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.
1004905978 P-K SONIC NURO Installation and
Owners Manual (Rev F Jun-2017).docx
Page 54
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