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Disassembly / Reassembly (to reassemble, follow procedures in reverse)
Part & No.
During Disassembly
Grip tightly by hand and
Cap 8
lift off
Remove with a socket
Cover 2
wrench
Remove, being careful not
Disc 4
to scratch the lapped
surface
Remove without bending
Disc Holder
Ring 10
(P46SS)
Air Vent Ring 9
Remove without bending,
as it will not return to its
(P46SS)
proper shape
Remove with a socket
Screen
wrench
Holder 7
Screen
Remove gasket and clean
Holder
sealing surfaces
Gasket 6
Screen 5
Remove without bending
9. Troubleshooting
If the expected performance is unachievable after installation of the trap, read chapter 5 and
chapter 6 again and check the following points for appropriate corrective measures.
Problem
No condensate
Screen is clogged with rust or scale
is discharged
Air vent ring (bimetal) is broken or worn, causing
(blocked) or
air-binding (P46SS)
discharge is
Disc holder ring is broken or worn, causing air-
poor
binding (P46SS)
Disc is sticking to valve seat (due to oil, etc.)
Steam-locking
Trap capacity is insufficient
Differential pressure is low
Steam leakage
Valve closure is obstructed by scale, etc.
or blowing
Disc or valve seat is worn
(from valve
Air vent ring (bimetal) or disc holder ring is
seat)
broken, obstructing valve closure (P46SS)
Back pressure exceeds allowable value
Trap is being used below minimum operating
pressure
Disc is sticking to top of cover (due to oil, etc.)
During Reassembly
Being careful not to bend it, push
down until cap slides into place
Coat threads with anti-seize, then
tighten to the proper torque (page 7)
Make sure that the seat surface (the
lapped side) is facing down, toward
the valve seat (see Figure A)
Set on the air vent ring and make
sure that it does not sit on the valve
seat surface
Reinsert without bending
Coat threads with anti-seize, then
tighten to the proper torque ( page 7)
Replace with a new gasket, coat
surfaces with anti-seize
Reinsert without bending
Cause
― 10 ―
Figure A
P46SS
Remedy
Clean
Replace air vent ring
Replace disc holder ring
Clean
Correct piping
Change to trap of suitable
capacity
Study inlet/outlet pressure,
including rise in outlet pipe
Clean or replace screen
Replace worn parts
Replace air vent ring or disc
holder ring
Use within pressure range
Use within pressure range
Clean
Continued on next page
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