I-
tem
Temperature class
T6 = 85°C T5 = 100°C
T4 =135°C
1.
Permissible heating on the shaft
30K
45K
65K
2.
Permissible heating on the flange
30K
45K
65K
Start-up
Please note!
Before mounting or start-up the insulation resistance is to be measured by qualified technicians.
The resistance must be greater than 1 M
Ω
. A critical value is reached at 0.5 M
Ω
. If this value is not
reached, the motors must be dried.
The best way to do it is in an oven at temperatures up to 100 °C. To eliminate any humidity, open the motor. To be
entitled to any warranty claims, contact the manufacturer in advance.
These works must be carried out by qualified technicians; in the course of said works the manufacturer shall instruct
said technicians on how to ensure the explosion protection during reassembly. For the assembly and disassembly, see
the relevant repair instructions.
• Check the direction of rotation and operation during idle running. In case of unidirectional external fans (axial fans)
observe the sign for the direction of rotation on the motor. If the direction of rotation needs to be changed, invert the
two power lines and the fan.
• If the motor was stored and an additional quantity of grease was applied in the anti-friction bearings, the motor must
be run with no load for at least 0.5 h to ensure an adequate distribution of the grease and to avoid the overheating of
the anti-friction bearings.
• Make sure that the operating current matches the specified current values on the rating plate.
The protective equipment required as per EN 60079-14 is to be set according to the motor rating values specified on
the rating plate. The specified current value on the rating plate must not be exceeded in continuous duty conditions.
Please note!
Run the motor with load for at least 1 hour and check that there is no unusual noise or heating ex-
ceeding the specified temperature class values.
Relubricate motors with regreasing equipment with the specified amount of grease during start-up.
Vibration severity values of V
eff
<
3.5 mm/s (
P
N
<
15 kW) or 4.5 mm/s (
P
N
> 15 kW) in coupled operating mode are
not allowed. In case of deviations from normal operating conditions – e.g. higher temperatures or greater noise and
vibrations – find the cause and, if necessary,
contact Producent.
Please note!
The protective equipment must always be kept in service also during trial runs. In case of doubt
switch off the machine.
Maintenance
Inspection
• The motors are to be constantly monitored depending on the operating conditions.
• Keep the motors clean and the venting openings free
Any national regulations valid for the maintenance/repair of electrical equipment in areas subject to explosion hazards -
e.g. in Germany the Operational Safety Order, etc - are to be complied with.
During maintenance especially those parts on which the degree of protection depends must be checked; these include,
for instance, the integrity of the lead-in components and gaskets.
