7
OCH439M
Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the
performance of the unit.
1. Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.
2. If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away by
rainwater. (If a sunshade is installed, rainwater may not clean the panel.)
3. To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water
collecting in the base of the outdoor unit could cause rust.
4. If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.
5. If the unit is damaged during installation or maintenance, be sure to repair it.
6. Be sure to check the condition of the unit regularly.
7. Be sure to install the unit in a location with good drainage.
2-4. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL
2-3. CAUTIONS FOR REFRIGERANT PIPING WORK
Tools for R410A (The following table shows whether conventional tools can be used or not.)
Tools and materials
Use
R410A tools
Can R22 tools be
used?
Can R407C tools be used?
Gauge manifold
Air purge, refrigerant charge
and operation check
Tool exclusive for R410A
×
×
Charge hose
Tool exclusive for R410A
×
×
Gas leak detector
Gas leak check
Tool for HFC refrigerant
×
○
Refrigerant recovery equipment Refrigerant recovery
Tool exclusive for R410A
×
×
Refrigerant cylinder
Refrigerant charge
Tool exclusive for R410A
×
×
Safety charger
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Tool exclusive for R410A
×
×
Charge valve
Prevent gas from blowing out
when detaching charge hose Tool exclusive for R410A
×
×
Vacuum pump
Vacuum drying and air purge
Tools for other refrigerants
can be used if equipped with
adapter for reverse flow check
Δ(Usable if equipped
with adapter for
reverse flow)
Δ(Usable if equipped with
adapter for reverse flow)
Bender
Bend the pipes
Tools for other refrigerants can be used
○
○
Pipe cutter
Cut the pipes
Tools for other refrigerants can be used
○
○
Welder and nitrogen gas
cylinder
Weld the pipes
Tools for other refrigerants can be used
○
○
Refrigerant charging scale
Refrigerant charge
Tools for other refrigerants can be used
○
○
Vacuum gauge or thermistor
vacuum gauge and vacuum
valve
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and re
-
frigerant to thermistor vacuum gauge)
Tools for other refrigerants can be used
○
○
Charging cylinder
Refrigerant charge
Tool exclusive for R410A
×
-
×
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
Δ
: Tools for other refrigerants can be used under certain conditions.
○
: Tools for other refrigerants can be used.