Service manual

LT-2023
13
PROPER REPAIR PROCEDURES
The DeVilbiss Oxygen Concentrator is designed for ease of service. To aid service personnel, a Service Kit (part #444-501) is available which contains
the necessary gauges, tools, and testing instruments to properly service the oxygen concentrator. On parts that are sold separately, the part number is
indicated in parenthesis.
The following parts are included in the Service Kit:
1 Slotted bit
1 #1 Phillips bit
1 #2 Phillips kit
1 7/16” Socket l/4” Drive
1 Crescent wrench
1 8” Duckbill pliers
1 T-10 Bit
In addition to the Service Kit, an oxygen analyzer (part #O2ANA) is needed to periodically check oxygen concentration levels. A voltmeter will be
needed for more accurate voltage testing.
NOTE– Be sure to read all of the steps involved before beginning any of the procedures in this manual.
NOTE–Afterrepairingorreplacingacomponentruntheunitfor20minutes,checktheoxygenconcentrationandtestforleaks.
Test for leaks using a certified leak detection solution such as SWAGELOK #MS-Snoop® or equivalent (must not contain ethylene glycol). Apply leak
test solution to all fittings and hose connections with the unit running. If an air leak is present, the solution will bubble. All leaks should be repaired
before putting the concentrator back in service.
CAUTION–Do not apply leak test solution to any part of the rotary valve or the main PC Board assembly.
When servicing the DeVilbiss Oxygen Concentrator, be absolutely certain that the correct tools are used and that the
parts are free of oil and grease or any material not compatible with oxygen. Teflon® tape is recommended and must be
applied to the male threads omitting the first thread to eliminate the possibility of tape particles entering the oxygen
system.
Electric shock hazard. Do not remove cabinet. The cabinet should only be removed by a qualified DeVilbiss 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 cabinet removed.
Teon®isaregisteredtrademarkofDuPont.
Snoop®isaregisteredtrademarkofSWAGELOK
COMPONENT TESTING, REPAIR, AND REPLACEMENT
1 5/32” Allen bit
1 5/64” Allen bit
1 9/64” Allen bit
1 7/64” Allen bit
2 Pressure/Vacuum gauge (part #PVO2D-601)
1 Tool box
2 Test Fittings (part #303DZ-637)
1 Torx screwdriver w/bits
1 AC/DC test light
1 1/4” Ratchet wrench
1 3mm Hexbit
1 T-15 Torx “L” wrench
1 10mm Socket l/4” Drive
1 1/4” Drive extension
1 Plastic storage case
1 Plastic error indicator tool
WARNING