Operation Manual
4 Maintenance 
4 - 3 
 【IDF1E∼11E】 
・  Open the residual pressure release cock at 
the drain tube connection port to release air 
and drain fluid left in the product. 
(Leave the drain tube connected and hold it 
with hand so that it does not get twisted.) 
・  Because drain may be given by air 
pressure left in a product like a careful. 
・  Remove the drain tube. 
Pull out the tube while pushing up the drain 
tube release bush. 
・  Hold the case assembly lightly and pull down 
the lock button with thumb. Then, turn the 
case assembly to the left (or right) to 45°to 
align the marks. 
・  Release your thumb from the lock button and 
slowly pull down the case assembly 
(vertically) to remove it. 
・  Remove the auto drain strainer and clean it. Take care 
not to cut your hand with the sharp edges of the 
strainer. 
・  Pour solution of neutral detergent into the case 
assembly and shake it well to clean. 
・  Check the case O-ring for damage such as scratches, 
twisting or foreign particles attached to it. Then, apply 
grease thinly and fit it in the groove in the case 
assembly. 
・  Fit the auto drain strainer to the case assembly and fit 
it into the drain separator body. Turn it untill the lock 
button clicks. 
・  Try to turn the case assembly lightly and check that it 
does not turn. If it turns, start with fitting the case 
assembly to the body again. 
・  Close the residual pressure release cock and mount 
the drain tube and front panel as they were. 
・  When reapplying compressed air to the air dryer, first 
open the valve on the inlet side slowly. Check for 
compressed air leak and if everything is all right, open 
the valve on the outlet side. 
・  If the auto drain strainer or case assembly is 
damaged or very dirty, replace it with a new one. 
SO
Drain tube
O
p
en
Drain tube
rerease bush
Close
Lock button
Residual
pressure
rerease cock
Pull it down
slowly.
Mark
Lock button
Turn to 45
゜
(right or left)
Drain separator
body
Auto drain
strainer
“O”ring
Case assembly
 CAUTION
Check that air
pressure is zero
before servicing.










