GE GL317D Instruction Manual page 57

Using a water pressure gauge
Introduction
Process
07- 2016
Installation
Erection general procedures
In each assemblage performed using a double seal (1) and (2), the volume
(3) communicates with the outside by a channel (4), blocked- off by a plug (5)
or (6), so that leak- tightness can be checked.
1
3
2
4
The table below gives the steps of the leak- tightness checking using a water
pressure gauge :
Step
1 Remove the leak test plug (5) or (6)
and its seal (7) if necessary, leave
open for half an hour.
2 Connect up the water pressure gauge
(8), using the adapter (9) or (10).
3 Fill the water pressure gauge's U tube
to half way up.
NOTE : If temperature
than 0C, use an anti- freeze mix-
ture instead of water.
D After a few minutes note the water
column level R1.
D Note the water column level R2
again after half an hour.
The displacement H should be less
than 10 mm.
4 At the end of the inspection, pull the
adaptor of the water pressure gauge
and replace the leak test plug (5) or (6)
and its seal (7), where required.
GE Information
5
Action
is less
6
Diagram
7
5
6
2...3 turns
10
8
9
H
R2
R1
7
5
6
L31- 003EN/03
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