COMEM RIS2 Manual De Instrucciones página 6

Installations
• Before installing the device remove the protective cap
from the oil down flow hole.
• Ensure the bearing surface is smooth and flat.
• A four stud fixing is recommended.
• Protect RIS2 device from any subsequent paint operation.
• Only install RIS2 after the transformer drying operation.
• Switch off the supply voltage prior to working on RIS2.
• Operation and maintenance of RIS2 should only be
carried out by skilled personnel.
• COMEM disclaim all responsibility for incorrect
installation or improper use.
• Do not use powerful solvents or benzene's for cleaning.
A damp cloth should.
• Do not remove float from inside RIS2
WARNING
• Do not use the oil filter on the Comem RIS2 for general filling of
the transformer, only for topping up the device
• When filling the RIS2. with oil make sure the bleed cock is open
and fill until float reaches the "MAX" position.
• After filling ensure the bleed cock and filler cap are fully closed.
Hand tighten only, no tools required.
• After setting the thermometer pointer ensure the protective
window is secured, hand tighten only.
• Check the cable gland M25x1,5 is securely fitted.
• The event of a major oil level variation or high gas evolvement
the float will reach "MIN" position, triggering the alarm switch, it
will then be necessary to bleed off gas or add oil.
1
5
Figure 3
Instructions
The operations are performed as follows:
A. Open the petcock (over 5)
B. Assemble the pneumatic pump set for Comem RIS2 as
the figure (2, 3 and 4)
C. Remove the cap (1)
D. Screw the pump in the petcock (figure on the right).
6
Instructions for topping up the level on RIS2
Foreword
The device is filled with oil exclusively by the transformer
manufacturer at environment temperature. Before ener-
gize the transformer, ensure that RIS2 device is completely
filled with oil. For various reasons, the oil may be below
the set level. If the transformer is warm, due to high envi-
ronment temperature or to its own operation, the internal
pressure may increase, causing a visible drop in the oil
level in the chamber of the device.
It is recomended to close the cap 5 without tools or spanner. At
least, it is possible to use a dedicated tool: (see figure 2)
Figure 2
If there is no oil available for topping up, COMEM supplies
a set of accessories with the pump which can create a
vacuum in the device, thus restoring the oil level.
2
3
4
E. Pull back the piston so that the air flows out of Comem
RIS2 and the oil level grows up.
F. Close the petcock (above 5) in order to move again the
piston in the starting position without put air inside the
Comem RIS2.
G. Repeat the above steps (A-F) until all the air flow out of
the Comem RIS2.
INTEGRATED SAFETY DEVICES RIS2
CAUTION