71
71
3.
3.
Guideline for each installation process
Guideline for each installation process
72
72
(5) Check that the nitrogen is passi
(5) Check that the nitrogen is passing through the unit A liquid pipe.
ng through the unit A liquid pipe.
(6) Flushing.
(6) Flushing.
①
①
Block the end of the pipe with
Block the end of the pipe with the insulation of your hand.
the insulation of your hand.
↓
↓
②
②
When the gas pressure becomes
When the gas pressure becomes too great to contain remove insulation quickly. (First flush)
too great to contain remove insulation quickly. (First flush)
↓
↓
③
③
Block the end of the pipe with
Block the end of the pipe with insulation again.
insulation again.
↓
↓
(Carry out second flushing)
(Carry out second flushing)
(The nature and amount of the extraneous material
(The nature and amount of the extraneous material inside the pipe ca
inside the pipe can be checked during flushing
n be checked during flushing
by placing a rag l
by placing a rag lightly over the end of the pipe. In the
ightly over the end of the pipe. In the unlikely case that even a
unlikely case that even a small quantity of
small quantity of
moisture is found then the inside
moisture is found then the inside of the pipe should be dried
of the pipe should be dried out thoroughly.)
out thoroughly.)
Action:
Action:
①
①
Flush the inside of the pipe with nitrogen gas. (Until such time as the moisture disappears.)
Flush the inside of the pipe with nitrogen gas. (Until such time as the moisture disappears.)
②
②
Carry out a thorough vacuum drying operation. (See page 34)
Carry out a thorough vacuum drying operation. (See page 34)
- Close the main valve
- Close the main valve on the nitrogen cylinder.
on the nitrogen cylinder.
-Repeat the above operation for unit B.
-Repeat the above operation for unit B.
-When the liquid pipe
-When the liquid pipe operations have been completed then do the same
operations have been completed then do the same with the gas pipes.
with the gas pipes.
Summary of Contents for MXJ-YA1509 Series
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Page 137: ...136 136 Installation guide Installation guide...
