6.4 Precautions for Water-Cooled Models
6-8
Pressure
•
Install a safety valve or other mechanism to keep the pressure in the Servomotor cooling pip-
ing below 1.0 MPa.
•
The normal withstand pressure of the Servomotor is 0.5 MPa.
Do not allow the pressure to increase even momentarily to greater than 1.0 MPa, e.g., for
cooling medium surges.
Do not allow the pressure to exceed 0.5 MPa more than 99 times.
Checking the Flow Rate
Use a flow rate meter or other device to confirm that the required flow rate is achieved.
If the flow rate is too low, burning may occur in the Servomotor and cooling performance may
suffer.
Storage and Periods of Nonuse
•
If you store the Servomotor or do not use it for a period of time, remove all of the cooling
medium from the cooling piping.
•
Observe the following conditions when you store the Servomotor or do not use it for a period
of time.
Temperature:
−
20
°
C to +60
°
C (with no freezing)
Humidity: 20% to 80% relative humidity (with no condensation)
Other Precautions
•
If cooling medium leaks from the Servomotor, stop using the Servomotor immediately.
Then, inspect the Servomotor and take suitable countermeasures.
•
After you install the Servomotor, make sure that there is no cooling medium or other liquid on
the Servomotor.
If you find any liquid, wipe it off immediately and dry the Servomotor sufficiently.
A Servomotor may be damaged if it is used with liquid on it.
•
If you disconnect the piping during maintenance or at any other time, do not allow the cooling
water to get on the Servomotor.
