DeVilbiss iFill 535D - Cooling Fan; Final Bacteria Filter; Four-Way Valve; Hour Meter

LT-1929
15
COMPONENT TESTING, REPAIR, AND REPLACEMENT
c. Discard defective cup seal.
d. Place new cup seal into position.
e. Replace cup retainer plate.
f. Secure with screws.
7. Reposition sleeve on piston.
NOTE– In some cases, it may
be easier to position sleeve on piston before installing a new
cup seal and retainer plate.
8. Place valve plates on the compressor so that heads of reed
valve screws are aligned with the indentation in top of
pistons.
9. Install the compressor heads so that the holes in the heads
are aligned with the holes in the compressor housing.
10. Secure compressor heads with the screws.
COOLING FAN
The cooling fan provides a constant air ow to cool the
compressor. A defective fan may cause the compressor’s
internal thermo-protective device to activate and shut the
compressor off. Should this occur, it will require several minutes
for the thermo-protective device to reset. The fan is located on
the Plexiglas mounting platform above the compressor.
To replace cooling fan (Figure 12):
1. Ensure the iFill station is unplugged from the wall outlet.
2. Remove the left and right covers from the iFill station.
3. Disconnect the fan electrical connector from main PC board.
4. Use a Torx screwdriver with a size T-15 bit to remove the
four retaining screws that secure the cooling fan to the
Plexiglas mounting platform.
5. Remove the defective cooling fan and install the
replacement fan using the four retaining screws. NOTE–
When installing the fan, be sure the air ow directional arrow
on the side of the fan is pointing down toward the
compressor.
6. Reconnect the electrical connector to the main PC board.
7. Replace covers. NOTE–Be sure to reattach indicator panel
ribbon connector and hour meter electrical connector (refer
to Cover Removal and Replacement in this manual).
FINAL BACTERIA FILTER
The nal bacteria lter is used to lter the oxygen as it leaves
the accumulator tank prior to entering the pressure intensier. It
is recommended that this lter be changed within 17,520 hours
of unit operation. The lter is mounted on the vertical piece of
metal superstructure in the center of the unit near the main PC
board.
NOTE– On early versions of the iFill station, this lter may be
located in the base of the unit below the pressure intensier.
To replace the final bacteria filter (Figure 12):
1. Ensure the iFill station is unplugged from the wall outlet.
2. Remove the left and right covers from the iFill station.
3. Disconnect tubing from both ends of lter.
4. Cut the plastic cable tie holding the lter in place and
remove lter.
5. Reconnect tubing to the replacement lter with arrow on
lter pointing down and secure with cable tie.
6. Replace covers. NOTE–Be sure to reattach indicator panel
ribbon connector and hour meter electrical connector (refer
to Cover Removal and Replacement in this manual).
FOUR-WAY VALVE
The four-way valve is mounted on the side of the intensier and
interconnects the intensier with the compressor. During
operation, the four-way valve controls air ow by directing
compressed air to the intensier and routing the exhaust air
back to the compressor.
To replace the four-way valve (Figure 15):
1. Ensure the iFill station is unplugged from the wall outlet.
2. Remove the left and right covers from the iFill station.
3. Disconnect the four-way valve electrical connector.
4. Disconnect the tubing from the ttings at the bottom of the
valve. Be sure to note the position of each piece of tubing
before removing it from the valve.
5. Use a Torx screwdriver with a size T-27 bit to loosen the
four retaining screws that secure the valve to the intensier
and then remove valve.
6. Install the two o-rings onto the new valve.
7. Install the new four-way valve using the four retaining
screws.
8. Reconnect the tubing and electrical connector.
9. Replace covers.
NOTE–Be sure to reattach indicator panel
ribbon connector and hour meter electrical connector (refer
to Cover Removal and Replacement in this manual).
HOUR METER
The hour meter provides the total running hours of the iFill
station. It is mounted in the right side cover behind the air lter.
To replace the hour meter (Figure 18):
1. Ensure the iFill station is unplugged from the wall outlet.
2. Remove the left and right covers from the iFill station.
3. Remove air lter from the right side cover.
4. Compress the four plastic locking tabs on the side of the
hour meter and push the meter toward the outside of the
cover to remove it.
5. Install new hour meter by compressing the four locking tabs
while pushing the meter into the right side cover until it locks
into place.
6. Replace covers.
NOTE–Be sure to reattach indicator panel
ribbon connector and hour meter electrical connector (refer
to Cover Removal and Replacement in this manual).
LONG-LIFE INTAKE FILTER
The long-life intake lter is under the cylinder cradle.
To replace the long-life intake filter (Figure 5):
1. Ensure the iFill station is unplugged from the wall outlet.
2. Use a at screwdriver to loosen both 1/4 turn fasteners by
turning counterclockwise 1/4 turn then remove the cylinder
cradle.