KNF MOTOR M 56 EX
Use
Translation of Original Operating- and Installation Instructions, english, KNF 121220-121648 02/19
6
2.4.4. Explosion groups
Flammable gases and vapors are classified according to explosion
groups (I, IIA, IIB and IIC) and temperature classes. Tab. 5 (ca-
pacitor motor) and Tab. 6 (3-phase motor) show the classification
of the most common flammable gases and vapors.
Classification of the most common flammable gases and vapors
for capacitor motor
T1
T2
T3
T4
T5 T6
I
Methane –
–
– –
–
IIA
Acetone
Ethane
Ethyl acetate
Ammonia
Ethyl chloride
Benzole
Acetic acid
Carbon monoxide
Methane
Methanol
Methyl chloride
Naphthalene
Phenol
Propane
Toluene
i-Amyl acetate
n-Butane
n-Butyl alcohol
Cyclohexanon
1.2-Dichloroethane
Acetic acid-
anhydride
Gasoline
Diesel fuel
Jet fuel
Heating oil
n-Hexane
Acetaldehyde –
–
IIB
City gas
Ethylene
Ethyl alcohol
Hydrogen sulfide Ethyl ether
–
–
IIC
Hydrogen
Acetylene
– –
–
Carbon
disulfide
Tab. 5
Classification of the most common flammable gases and vapors
for 3-phase motor
T1
T2
T3
T4
T5 T6
I
Methane –
–
– –
–
IIA
Acetone
Ethane
Ethyl acetate
Ammonia
Ethyl chloride
Benzole
Acetic acid
Carbon monoxide
Methane
Methanol
Methyl chloride
Naphthalene
Phenol
Propane
Toluene
i-Amyl acetate
n-Butane
n-Butyl alcohol
Cyclohexanon
1.2-Dichloroethane
Acetic acid-
anhydride
Gasoline
Diesel fuel
Jet fuel
Heating oil
n-Hexane
Acetaldehyde –
–
IIB
City gas
Ethylene
Ethyl alcohol
Hydrogen sulfide Ethyl ether
–
–
IIC
Hydrogen
Acetylene
–
– –
Carbon
disulfide
Tab. 6
The motor may only be operated in an environment which contains
an atmosphere which is not explosive or belongs to the explosion
groups II A, II B or II C and the temperature class T3 or below (ca-
pacitor motor; marked range in Tab. 5) or T4 or below (3-phase
motor; marked range in Tab. 6).
Motor environment
