Fujitsu AB A30LBT Series Service Instruction page 67

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 (Out)
Normal TEMP.
, there is a possibility of inside clogged. In this case, replace Strainer.
Pipe (Out)
02-36
Pipe (In)
Hi TEMP.
Pipe (In)
Pipe (Out)
Hi TEMP.
,
Pipe (Out)