6
Test room
climate class
Dry bulb
temperature
℃
Relative
humidity %
Dew
point
℃
Water vapour
mass in dry
air g/kg
0
20
50
9.3
7.3
1
16
80
12.6
9.1
8
23.9
55
14.3
10.2
2
22
65
15.2
10.8
3
25
60
16.7
12.0
4
30
55
20.0
14.8
6
27
70
21.1
15.8
5
40
40
23.9
18.8
7
35
75
30.0
27.3
NOTE: the water vapour mass dry air is one of the main points influencing
the performance and the energy consumption of the cabinets. Therefore,
the order of the climate class in the table is based on the water vapour
mass column.
•All maintenance staff and others working in the local area shall be instructed
on the nature of work being carried out. Work in confined spaces shall be
avoided.
•If any hot work is to be conducted on the refrigerating equipment or any
associated parts,appropriate fire extinguishing equipment shall be available on
hand. A dry chemical or CO
₂
fire extinguisher should be adjacent to the
charging area.
•Notice: Servicing shall only be performed as recommended by the
equipment manufacturer.
Maintenance and repair requiring the assistance of other skilled personnel shall
be carried out under the supervision of the person competent in the use of
flammable refrigerants.
•No person carrying out work in relation to a REFRIGERATING SYSTEM
which involves exposing any pipe work shall use any sources of ignition in such
a manner that it may lead to the risk of fire or explosion. All possible ignition
sources, including cigarette smoking, should be kept sufficiently far away from
the site of installation, repairing, removing and disposal,during which
refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment shall be surveyed to
make sure that there are no flammable hazards or ignition risks"No Smoking"
signs shall be displayed.