MA-005 - MINITRANS Installation Manual - Rev 3.1
29-Sep-15
Page 24 of 85
8.3.2
Fitting Instructions
1.
Insert one end of the tubing into the Swagelok or Ham-Let fitting body as shown
in Figure 8—5.
Figure 8—5: Fitting body and tubing
2.
Ensure that the tubing rests firmly on the shoulder of the fitting body and that the
nut is finger-tight.
3.
Mark the nut with a fine-tipped permanent marker at the 6 o’clock position as
shown in Figure 8—6.
Figure 8—6: Nut at 6 o'clock position
4.
While holding the fitting body steady, tighten the nut 1 and a 1/4 turns to the 9
o’clock position as shown in Figure 8—7.
Figure 8—7: Nut at 9 o'clock position
Do not
use any type of thread sealant on compression-type tube fittings.
Do not
open the valves on the transformer or the stainless steel tubing. This is
performed by GE-trained and certified personnel during the commissioning
phase to prevent air bubbles from entering the transformer.
8.3.3
Connection to Oil Supply Valve
Oil is typically taken from a valve midway up on the transformer or from an active cooling
loop (see Section 8 for information on valve selection). Oil must be taken from a location
where the oil is well mixed and in the active flow of the transformer oil. The temperature
of the oil at this location should not exceed 100 °C or be lower than −10 °C.
Note: The
distance from the oil return valve should be at least 30 cm (12 in.).
