Recommended coolants
Use correct personal protective equipment when you handle the coolant.
Ethylene glycol is a toxic compound. Avoid exposure to the coolant.
Other options:
Propylene glycol based coolants, like Splash® RV&Marine antifreeze.
Ethylene glycol based Glysantin® G48® (includes also corrosion inhibitors).
Emergency operation
The electric machine should be operated within the operation limits and in the conditions
speci ed by the manufacturer. However, it can be limitedly used in the following fault/ emergency
situations.
Cooling of the electric machine fails
The cooling system failure can be caused by dregs (sediment) accumulating to the cooling system
tubes. Try opening the possible blockage by changing the coolant ow direction. See also Chapter
Cooling system maintenance.
If the cooling of the electric machine fails, limited operation is still possible with no coolant ow.
The operation speed must be limited to half (1/2) of the rated speed and maximum 20 % of the
nominal torque may be used. In such case, the electric machine may be operated for maximum
one hour. Repair the cooling system as soon as possible. For further information, contact
Danfoss representative.
The temperature measurement of the electric machine fails
When reading the temperature (resistance) values from the additional sensor, add +15 ºC to the
measured value. This gives more correct estimation of the inner temperature of the machine. In
case of the temperature measurement failure and using additional temperature sensor, replace
the electric machine as soon as possible, but no later than in two months.
Contact the Danfoss service.
EM-PMI540-T3000
7. Operation
46 |
©
Danfoss | Produced By: Danfoss Power Solutions | November 2018
| BC265857716810en-000103
Содержание EM-PMI540-T3000
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