Maintenance - Carrier XCT7 40VH A-7G Series Installation And Owner's Manual

Maintenance

Only service personnel with qualification certificate can undertake service work.
All power circuits shall be cut off before connecting terminal devices.
Shut down the device and shut off power switch before washing or maintaining; otherwise, electric shock may
ensue; do not touch movable and rotary parts.
Do not wash the device with clean water; otherwise, electric shock ensues.
When wire control registers for screen cleanup and screen indicator flashes (cleanup time reached), clean up air
screen. The indication appears when preset runtime comes to an end.
Heat exchange device and air screen shall be frequently cleaned up and replaced.
Cleanup job shall be done at least once per year (applicable to normal office conditions). (Frequent cleanup
shall be done when necessary).
In case of serious air pollution in places where the unit is installed, intensify cleanup efforts.
In case of dust and dirt stubbornly denying cleanup efforts, replace air screen and heat exchange device (all
replacements shall be alternative fittings).
Please wear gloves when conducting cleanup job lest injury ensues. Mind your steps especially when working
aloft.
Do not wash air screen with water hotter than 40°C; otherwise, screen may lose color or get deformed.
Do not place air screen near fire source; otherwise, screen may catch fire.
Do not use gasoline, diluent or other chemical solvents; otherwise, screen may lose color or get deformed.
Do not remove air screen except for cleaning purposes; otherwise, fault may ensue.
In case the handle of heat exchange device gets damaged during cleaning, please replace heat exchange
device; otherwise, it may fall off.
WARNING
CAUTION
CAUTION
WARNING
13