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Disassembly / Reassembly (to reassemble, follow procedures in reverse)
T(F)8N
Part & No. T5N
T(F)10N
Glass
O
Holder (3)
Gasket (5)
–
Gasket (9)
O
Sight Glass
O
(2)
Guard Plate
–
(7)
Gasket (5)
O
Side Sight
O
Glass (8)
Gasket (5)
O
Ball (4)
O
Sight Glass
Model
T5N
•
•
T8N
TF8N / T10N
(Option T8NL/TF8NL/T10NL/TF10NL)
NOTE: - Coat all threaded portions with anti-seize.
- If drawings or other special documentation were supplied for the product,
any torque given there takes precedence over values shown here.
7. Troubleshooting
If the expected performance is unachievable after product installation, read chapter 5 again and
check the following points to take the appropriate corrective measures.
Problem
Cannot see through
The glass is dirty
glass (Ball not
The guard plate is dirty
visible)
There is build-up of dirt inside the body
Deterioration or damage to gaskets
Liquid leaks to the
outside of the
Improper glass holder tightening torque was used
product
The glass displays wear, cracks or other
damage
The guard plate displays wear, cracks or other
damage
Glass becomes
The operating pressure or temperature
damaged
exceeds the maximum specified operating
conditions
The glass has outlived its projected service life
Ball does not move*
The body is clogged with dirt, or there is a
(T5N / T8N·TF8N)
build-up on the ball
* For T10N/TF10N/T10NL/TF10NL, when the condensate load is low, the ball does not move
Disassembly
Remove with a wrench
O
Remove, being careful
O
not to scratch surfaces
–
Remove, being careful
O
not to scratch the surface
Remove
O
Remove, being careful
O
not to scratch surfaces
Remove, being careful
–
not to scratch the surface
Remove, being careful
–
not to scratch surfaces
Remove
O
Tightening Torque and Distance Across Flats
Torque
N
m
•
40
TF10N
120
Cause
Consult the table of tightening torques and
tighten to the proper torque
Reinsert, being careful not to scratch
surfaces; replace with new only if damaged
Replace with a new gasket; be careful
not to scratch surfaces
Reinsert, being careful not to scratch the
surface
Replace with a new guard plate
Reinsert, being careful not to scratch
surface; replace with new only if damaged
Reinsert, being careful not to scratch the
surface
Reinsert, being careful not to scratch
surfaces; replace with new only if damaged
Replace with new if badly worn
Glass Holder
(lbf
ft)
•
(29)
(44)
̶ 8 ̶
Reassembly
Distance Across Flats
mm
(in)
/
64
(2
17
)
32
/
3
60
(2
)
8
〜 〜
1 N･m
10 kg･cm
Remedy
Clean glass
Clean guard plate
Clean
Replace with new gaskets
Tighten to the proper
torque
Replace with new glass
Replace with new guard
plate
Compare specifications
and actual operating
conditions
Replace with new glass
Clean parts
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