Fujitsu ASU18RMLQ Service Instruction page 75

Check Point 5 : Check Opening and Closing Operation of Valve
When Valve is closed,
it has a temp. difference between Inlet and Outlet.
CLOSE
Example : Hot Gas
Pipe (In)
Hi TEMP.
Check Point 6 : Check Strainer
Strainer normally does not have temperature difference between inlet and outlet as shown in
but if there is a difference as shown in
Pipe (In)
If it is open,
it has no temp. difference between Inlet and Outlet.
OPEN
Example : Hot Gas
Pipe (In)
Hi TEMP.
Pipe (Out)
Normal TEMP.
, there is a possibility of inside clogged. In this case, replace Strainer.
Pipe (Out)
02-49
Pipe (In)
Pipe (Out)
Hi TEMP.
,
Pipe (Out)