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Istruzioni per installazione ed uso
Additional procedures for ATEX units:
PLEASE NOTE: In the event of prolonged storage at low temperature it is necessary to bring the oil to the
normal fluidity with a gradual dry start. Only after bringing the surface of the unit to at least 10°C, proceed,
necessarily, to the above-mentioned running-in phase.
In case of need, after stopping the motor, wait 30' before removal.
Surface temperature:
The temperature data on the nameplate indicate maximum admissible values on the unit, referring to the
ambient temperature between –20 °C and +40 °C: operation is not allowed at different ambient
temperatures. In case of need, contact MOTOVARIO TECHNICAL SERVICE.
Measuring the surface temperature:
In the case of unsuitable temperature stop the unit and contact MOTOVARIO TECHNICAL SERVICE.
Using adhesive thermo-sensitive detectors (if any):
The surface temperature can also be detected through the use of adhesive indicators. These can be
provided for special units or upon request.
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Check the level of external cleaning of the units, especially in the areas most affected by cooling;
Check for leaks of lubricant, especially in areas of the sealing rings;
To clean, use materials that do not generate electrostatic discharges.
Check for correct amount of oil through the appropriate level indicator, or dipstick, if any. Should it be
necessary to top up with lubricant follow the instructions on section 9. LUBRICATION;
In case of any abnormal noise and vibration, or high overheating, immediately stop the motor and
contact MOTOVARIO TECHNICAL SERVICE.
It is recommended to run in the unit at reduced load (approx. max. 40% of nominal load) for 24 hours.
In the running-in phase the unit is subject, for a short time, to condition of internal friction, and
therefore temperature, higher than the usual ones, but still compatible with the specified limits. It is
normal during this phase to detect a small release of grease from the oil seals.
After about 3 hours of operation at full load, it is necessary to measure the surface temperature as
indicated in section SURFACE TEMPERATURE. In the event that the rating value is exceeded,
immediately shut off the motor and contact MOTOVARIO TECHNICAL SERVICE.
During start-up it is important to measure the surface temperature of the unit under the conditions
provided by the application. The detection is to be repeated periodically as shown in table CHECKS
AND MAINTENANCE.
The surface temperature must be measured in the vicinity of the fast axis (for gear reducers) or in the
connection area between the motor and the unit (for gearmotor) and in any case in the less favourable
points of the air flow.
The measured surface temperature (Ts) plus the difference between the maximum ambient
temperature (Tam) allowed and the measured ambient temperature (Ta) must be at least 10 °C lower
than the maximum surface temperature allowed (Tc, indicated on the label):
Ts+(Tam-Ta) < Tc –10 °C
QL0214 ∕ REV.6
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