Mitsubishi Electric ECOV-X37VA Manuel D'installation page 56

13. Providing guidance on the usage to the end users
• According to this Installation Manual and a separately provided instruction manual, explain the correct use to the end users.
• If the end users are not present, provide explanation to the owner and/or building manager.
• The "Safety Precautions" section provides important safety precautions. Ensure that the users abide by the rules. (Page 5)
• Provide this Installation Manual along with the supplied instruction manual to the users after installation.
• If the users change, hand a copy of this Installation Manual to the new users.
13-1. Maintenance
Regular maintenance is important.
To use the unit safely and maximize its life, it is recommended that the unit undergo periodic inspections.
13-2. Preventing continuous liquid refrigerant flood-back
Continuous frosting of the compressor bottom except
during the defrost cycle when the evaporator fan is
stopped to prevent warm air from being supplied sug-
gests that liquid refrigerant is continuously flooding the
compressor.
Check the following items to prevent continuous liquid re-
frigerant flooding: opening of the evaporator's expansion
valve, installation position/state of the temperature sens-
ing tube, and evaporator fan (proper operation including
13-3. Regular operation check
Regularly check the operation condition of the unit.
If the unit does not cool properly, clean the gas cooler.
For the appropriate temperature of certain components
when the unit is operating properly, refer to "Checking the
unit condition". (Page 52)
13-4. Cleaning the gas cooler fins
Keep the gas cooler fins clean by regularly hosing them
down with water. Dirty fins may cause the high pressure
to rise or a poor cooling problem.
Use caution not to let the fan motor or control box get wet.
13-5. Cleaning the panels
Wipe with a soft cloth soaked in water with mild detergent,
and then wipe off the detergent with a wet cloth. Do not
use benzene, thinner, or polishing powder to clean the
unit. Benzene and thinner can damage the coating and
cause the unit to rust.
13-6. Handling of the gas cooler (all-aluminum heat exchanger)
Because the heat transfer pipe and fins of the gas cooler
are made of aluminum, they may corrode when in contact
with copper or iron materials. Do not touch the aluminum
part with gloves that have touched sheet metal or copper
pipes.
WT09614X03_GB
rotation speed).
Sheet metal cover
56
Frost
Mild
Copper pipe