21
Periodic Maintenance
Wipe the outside surface with a wet cloth, then dry the surface. Use a neutral detergent to clean any stains.
• Do not use benzene, oil or fatty detergents to clean the remote controller;
deformation may occur.
• The remote controller is water resistant but not water proof. Keep it as dry as possible.
Regular Maintenance-1
Periodic Inspection
Unit
Optional Remote Controller
Wipe the surface with a wet cloth.
To prevent burns or scalding, turn off the power
button or power supply and wait until the unit
cools before performing maintenance.
CAUTION
Be sure to do.
Check
For laundry, newspaper,
timber, oil, spray cans
and other combustible
materials near the heater
or the exhaust vent.
For abnormal sounds
during operation.
For abnormalities in
external appearance,
discoloration or flaws.
For water leaks from the
unit and piping.
For dust and soot in
the exhaust vent.
Check
Check
Check
Check
(Ex. NR662-OD)
For dust or debris in
the air inlet.
Check
For proper operation of
pressure relief valve.
Check
