Inspection
Before operation, the
The area of the room in which ma
Continuous ventilation sha
Open fire or
not allowed
Dur
powered off.
One dr powde or c dioxide extinguisher shall be equipped inside maintena area a the
extinguisher
Maintenance Site Requi
The maintena s sh provi with f and must be flat. Arrangement of
maintenance
Welding zone and non-w
certain safe
Ventilators s be in the maintenance and exhaust f fans, fans, f f
dedicated exhaust duct can be arranged, to meet
to avoid a
Le detection equipment for flammable ref be equipped, r
being established. Whe the leak de e is unde available state shal be c before
maintenance.
S vacuum pumps of flammable r charging e quipment
equipped, with relevant management system
that the maintenance equipment can only be used for vacuumizing and charging of one type flammable
refrigerant,
The master powe switch s be arranged outs the prot
device being equipped.
Nitrogen cylinders, ace cylinders and oxygen cylinder shall be placed separately. The distance
between the gas cylinders
valve be installed for the ace c The colo of the acetylene cylind and oxygen cylinder
installed shall mee
The warning sign of “No Fi
F suitable f electric appliance as dry powde extingui or carbon dioxi
extinguisher s
The ventilator and other ele equipment at the maintenanc site shall be r fixed, with
standardized pipe
Leak De
The environment which the r be free from pot
Leak detection
F the s containing flammable refrigerant, lea detection may be realized with electronic leak
detection equipment. the environment in which
shall guaranteed that will
ignition source, and is to the refrigerant to be dete Leak de equip shall be set at a
percentage of the LFL of the refrigerant employed, and
percentage of gas (25
The fluid used for leak detection s be a to mos of the ref The use of chlor
containin solvent shall be avoided, to avoid che
copper pipelines
I
I
position far from the leak poi with a
with OFN.
7
Safety P
During product maintenance
of all the doors/win
Operation w open fir is not a llowed, weldi and smoking. The u of phone is als not
allowed. The is not allowed.
Dur
be taken, inc
I the f ventilation
shall be taken imm
I case the pr dam be m by disassembling the refrigerati s the pro
must be delivered to
During maintenance, in
The refrigeration system
For the door with ref cylinders, the ref charged inside the cylinder cannot
exceed the specified value. vehicles the
perpendicul
Maintenance I
Maintenance Requirem
Before the
the outdoor unit
OFN s be us for nitr flushing (30 s m to confirm the requi treatment.
Maintenanc
During the use of c of shall be
The total length (including the refrige
of refrigerant
The cylinders of refrigerant
Befor
The refrigerant charged of the and the Excessive chargi is
not allowed.
Af
The maintenance in pro
Maintenance
P component to refrigerant l
with dedicated leak
Af
During the maintenance of sealing e before opening the s cove the air conditione shall
powered fi When supply is continuou de s be ca out at the most
dangerous posit
Dur of e components, the replacem of not affect level of
protection.
Af maintenance it s be that the seali fun tions will not be damage the se
materials wil not lose the f of preventing the e ntry of fl gas due to aging. The sub
components
Maintenance
The intrinsically
risks.
Befor any maintenance, l
carried out,
In case during service of t conditioner,
any inductanc
Only the conditioner manufacturer the part
replaced, or
F
that no le
Af
earthing reliabi
inspection
8
Removal and
The maintenance or other operations of the refrigeration
Moreover, the f of ref shall also be cons The fol pro s be
followed:
Refr
P
Vacuumizing;
P
P cutting or welding. T ref be r t a proper c The sys s be
purged with OFN, to ensure sa
oxygen can
In the i
the A sha the atmosphe
vacuumized.
for t time s be discha to the t can be welded operatio
above is nec
It shall be guarantee
favorable.
Welding
F
to the vacuumizing
Befor
system
The ref pi cannot be with a welding gun under any circumstance. T refri
pipelines must the disassembly must be carried around
opening.
Refrigerant
The followin
During the use of different r
The total length (including the refrige
of refrigerant
The cylinders of refrigerant s
Befor
A label must be pas
Exc
I
Dur the charging amount shall m w an electronic sc or a
scale. The connecting hose between the refrigerant cylinder and the charging equipment shall be relaxed
appropriately,
Requireme
The cylinder of refrigerant s be placed in a -10~50 environment with favorable ve a
warning labels
The maintenance tool in contact with the refrigerant shall be stored and used separately, and t
ma
Scrapping and R
Scrapping
Before
recovery of ref r In refrigerant r reus before the
sample of refrigerant
(1) The equipm
(2) Power supply
(3) The followings
The mechanical equipment
All personal protective equipment
The whole course of recovery
The r
(4) The refrigerati
9
