IM-P130-29
CMGT Issue 7
14
6. Maintenance and Spare parts
Table 1 Recommended tightening torques
Item
Size
Quantity
or
mm
N m
(lbf ft)
5
DN15 - DN20
8
17 A /F
M10 x 35
12
(8.6)
DN25 - DN32
8
19 A /F
M12 x 50
28
(20.7)
DN40 - DN50
8
19 A /F
M12 x 60
38
(28.1)
DN65 - DN100
8
23 A /F
M16 x 85
132
(97.4)
6.1 Maintenance
Note:
Before actioning any maintenance programme observe the 'Safety information' in
Section 1.
How to renew the windows and gaskets:
-
Isolate the sight glass and allow the pressure and temperature to reduce to ambient
conditions.
-
After isolation unscrew the cover bolts (
5
) and remove the old gaskets (
4
) and windows (
3
).
-
Carefully clean the recess.
-
Refit new gaskets and windows, ensuring that a gasket (
4
) is fitted to either side of each
window (
3
).
-
Replace the covers (
2
) and cover bolts (
5
- Apply the appropriate grease to SGS40
stainless steel bolting to avoid cold welding) and tighten to the recommended torque
(see Table 1).
-
After maintenance has been completed, isolation valves should opened slowly to allow
pressure and temperature to build up in a controlled manner.
-
Check for leaks.
Содержание SGC40
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