Component Testing, Repair, And Replacement; Proper Repair Procedures; Cover Removal And Replacement; Capacitor - DeVilbiss iFill 535D Servicehandbuch

C O M P O N E N T T E S T I N G , R E P A I R , A N D R E P L A C E M E N T

proper repair proceDures

This section contains the proper procedures for testing,
repairing and replacement of various components in the
DeVilbiss iFill Personal Oxygen Station . The oxygen generating
system components of the iFill station are very similar to ones
in a concentrator; therefore some of the same tools can be
used .
A service kit (part# 444-501) is available which contains
gauges, tools and test instruments to aid personnel in properly
servicing the iFill station . In addition, an oxygen analyzer (part#
R217P62 or R218P12) is needed to periodically check the
oxygen concentrations from an iFill cylinder .
– Be sure to read all of the steps involved before
NOTE
beginning any of the procedures in this manual.
– After repairing or replacing a component, turn the iFill
NOTE
station on run a Performance Test to ensure it is operating
properly (refer to page 9).
– When testing for leaks use a certified leak detection
NOTE
solution such as SWAGELOK, Snoop® or equivalent. Do not
use solutions containing ethylene glycol.
– Do not apply leak test solution to any part of the
CAUTION
rotary valve or PC board assembly.
– Use only DeVilbiss Healthcare replacement parts
CAUTION
and accessories.
Warning
When servicing the DeVilbiss iFill station, be absolutely
certain that the correct tools are used and that parts are free
of oil and grease or any material not compatible with
oxygen.
Electric shock hazard. The covers should only be removed
by a qualified DeVilbiss Healthcare homecare provider.
Disconnect the power cord from the wall outlet before
attempting repairs on the unit. Extra care should be taken if
it is necessary to operate the unit with the covers removed.

coVer remoVaL anD repLacement

to remove left cover (figures 1 & 3):
1 . Ensure the iFill station is unplugged from the wall outlet .
2. Use a flat screwdriver to loosen the 1/4 turn fasteners that
secure the cylinder cradle to the top of the unit . Remove
cradle .
3. Use a Torx screwdriver with a size T-25 bit (or flat
screwdriver) to remove the five screws that hold the left
cover to the internal superstructure (three on top and two
at bottom) .
4 . Lift and remove cover from unit .
to remove right cover (figures 2, 3, &18):
1. Remove left cover first.
2 . Carefully disconnect indicator panel ribbon cable from top
of main PC board .
3 . Disconnect hour meter electrical connector .
4 . Remove the two screws from the bottom of right cover and
then remove cover from unit .
to replace covers (figures 18):
1. Replace right cover first by setting cover on station base.
2 . Reconnect the indicator panel ribbon cable into the top of
the main PC board .
3 . Secure the two screws in the bottom of the right cover .
4 . Reconnect the hour meter electrical connector .
5 . Replace left cover on the station .
6. Secure the five screws that hold the left cover to the
structure (three on top and two at bottom) .
7 . Replace cradle .
8 . Secure cradle with 1/4 turn fasteners .

capacitor

The capacitor enables the compressor to start and run by
supplying voltage to the windings of the compressor motor . A
defective capacitor may prevent the compressor from starting
or cause it to run slower . The capacitor is located on the
Plexiglas mounting platform above the compressor by the
cooling fan .
Warning
Electric Shock Hazard. When replacing the capacitor, do not
touch the terminals or allow metal objects to come in
contact with the terminals on the capacitor. The capacitor
may hold a charge for several days after the unit is turned
off.
to replace the capacitor (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 . Use needle-nose pliers to disconnect the two wires from
capacitor terminals .
4 . Cut the plastic cable ties holding the capacitor in place and
remove capacitor .
5 . Reconnect wires to new capacitor .
6 . Install the new capacitor and secure with new cable ties .
7 . Replace covers .
NOTE
ribbon connector and hour meter electrical connector (refer
to Cover Removal and Replacement in this manual).

cHeck VaLVes

The check valves are located between the outlet of each sieve
bed and the accumulator tank . During operation they alternately
open and close allowing oxygen to pass through to the
accumulator tank .
to replace check valves (figure 10):
1 . Ensure the iFill station is unplugged from the wall outlet .
2 . Remove the left and right covers from the iFill station .
3 . Remove the tubing from both ends of the check valve .
4 . Reattach tubing to the ends of the new check valve .
– Make sure the outlet end of the check valve is
NOTE
pointing toward the accumulator tank.
5 . Replace covers .
NOTE
ribbon connector and hour meter electrical connector (refer
to Cover Removal and Replacement in this manual).
13
–Be sure to reattach indicator panel
–Be sure to reattach indicator panel
LT-1929