Maintenance (For A Qualified Service Person Only) - Daikin VAM-GVJU Manual

Operation Manual
4. MAINTENANCE
(for a qualified service person only)
WARNING
• ONLY A QUALIFIED SERVICE PERSON IS ALLOWED TO
PERFORM MAINTENANCE.
• BEFORE SERVICING TURN OFF ALL POWER SUPPLY.
• To clean or do maintenance on the ERV, be sure to stop
operation and turn the power switch off. It may cause elec-
tric shock or injury.
• Do not wash the ERV with water.
Doing so may result in an electric shock.
CAUTION
• Use gloves when cleaning.
Cleaning without gloves may cause injury.
• Watch your step.
Use caution, as this requires working in high places.
• Do not use benzene or thinner to clean the outside surfaces
of the unit.
This may cause cracks, discoloration or machine trouble.
4-1 HOW TO CLEAN THE AIR FILTER
Clean the air filter when the display shows the message "Time
to clean filter" at the bottom.
It will display that it will operate for a set amount of time.
CLEANING FREQUENCY
AT LEAST ONCE EVERY YEAR
(FOR GENERAL OFFICE USE)
(CLEAN THE FILTER MORE FREQUENTLY IF NECES-
SARY.)
• Increase the frequency of cleaning if the unit is installed in a
room where the air is extermely contaminated.
• If the dirt becomes impossible to clean, change the air filter
(The replacement air filter is optional).
1. Remove the service cover.
Go into ceiling through the inspection hatch, remove a fix-
ture of service cover and take it off.
(Refer to figure 3)
2. Remove the air filter.
Take out from the heat exchanger cores.
(Refer to figure 4)
3. Clean the air filter. (Refer to figure 5)
Use a vacuum cleaner A) or wash the air filter with water
B).
A) Using a vacuum cleaner
B) Washing with water
When the air filter is very dirty, use a soft brush and
neutral detergent.
After cleaning, remove water and dry in the shade.
NOTE
• Do not wash the air filter with hot water of more than 122°F,
as doing so may result in discoloration and/or deformation.
• Do not expose the air filter to fire, as doing so may result in
burning.
• Do not use gasoline, thinner or other organic solvents.
This may cause discoloration or deformation.
8
46
4. Fix the air filter.
If the air filter is washed, remove water completely and
allow to dry for 20 to 30 minutes in the shade. When dried
completely, install the air filter back in place.
(Refer to figure 6)
NOTE
• Be sure to install the air filter after servicing.
(Missing air filter causes clogged heat exchanger core.)
The air filter is an optional item and the replacement is avail-
able.
5. Put the service cover back securely in place.
Refer to the section (4-1, 1).
To reset the filter indicator on the remote controller,
press Menu/OK button and select "Reset Filter Indi-
cater" on the main menu screen.
∗Consult your dealer if you want to change the time set-
ting for when the filter sign goes on.
NOTE
• Do not remove the air filter except when cleaning.
Breakdown may occur.
4-2 OPTIMUM OPERATION
Observe the following precautions to ensure the system oper-
ates.
• When the display shows one of the following messages
"Time to clean filter" "Time to clean filter & element"
"Time to clean element", ask a qualified service person
to clean the filters (Refer to MAINTENANCE).
• Do not operate the ERV unit in Bypass mode when the
indoor air is under heating in winter or when the out-
door temperature is 86°F or higher.
This may cause condensation to form on the unit, discharge
grille or around air supply opening.
• Keep the unit and the remote controller at least
3.3 ft. away from televisions, radios, stereos and other
similar equipments.
This may cause distorted picture or noise.
• Turn off the main power supply switch when it is not
used for long periods of time. When the main power
switch is turned on, some watts of electricity is being
used even if the system is not operating.
• Do not install the remote controller where the indoor
temperature and humidity, respectively, are out of the
range of 32-95°F and RH 40-80%.
This may cause malfunction.
• Do not install the remote controller where direct sun-
light may fall on it.
This may cause discoloration or deformation.
EDUS711116
English
3P034927-7M
VAM-GVJU