NewAir APH-4000PV - Manual (Page 12)

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Allow at least 45 minutes for the heater to cool down after using.
Store the heater upright in a sheltered area away from inclement weather such
as rain, snow and dust.
We have our patio heater cover available to protect the burner head. We
recommend using our heat head cover when your heater is in storage.
Note: Be sure the heater is cool down before using the cover.
If the heater is not to be used for an extended period of time, disconnect and
remove the Propane Gas Cylinder and store in accordance with the "Standard
for Storage and Handling of Liquefied Petroleum Gases", ANSI/INFPA 58-
latest edition.
Beware of Spiders and Insects
Spiders and small insects
occasionally spin
webs or make nests in the burner tubes and or orifices during
warehousing and transit. These webs or nests can lead to a gas flow
obstruction, which could result in a fire in and around the burner tube.
This type of fire is know as
FLASHBACK and can cause serious damage to
your heater and creates an unsafe operating condition for the user.
Although an obstructed burner tube is not the only cause of flashback, it’s
the most common cause.
Check control compartment burners and circulation air passageways for
free air passage. Make sure that there are no obstructions
5. Maintenance
To obtain the best performance from your heater make sure you perform the
following maintenance activities on a regular basis:
Keep exterior surfaces clean. Use warm soapy water for cleaning.
Never use flammable or corrosive cleaning agents. Be sure to keep the
area around the burner and control assembly dry at all times.
Airflow must be unobstructed. Clear insect nests or webs away from
your heater’s exterior and interior using a straight piece of wire and wire
brush or vacuum cleaner at least once a year or immediately upon
indication of any of the following systems:
a. Flashback
b. Smell the fuel gas
c. Predominate yellow flames
d. Excessive popping noises during operation
e. Uneven emitter glow
Carbon deposits may create a fire hazard. Clean dome and emitter with
warm soapy Water if necessary.
Caution: