Weinmann Oxygen Modul Service manual
Servicing and
repair instructions
Module System
Oxygen
WM 22200
Suction
WM 22220
Combi
WM 22210
Interface
WM 22230
MODULE
MODULE
MODULE
MODULE
Contents
Introduction
1.
Overview
2.
Description
2.1
2.2
2.3
3.
Final Check
3.1
3.2
3.3
3.4
3.5
3.6
3.7
4.
Servicing
4.1
4.2
4.3
5.
Troubleshooting
6.
Repair information and repair instructions
6.1
6.2
6.3
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
Uses
. . . . . . . . . . . . . . . . . . . . . . . . . .
Module combinations
Storage
Test resources required
Preparations for final check
Entering device data
Check for leaks in the system
Checking inhalation function
Testing vacuum
Checking aspiration function
Intervals
Servicing
Disposal
General
Oxygen MODULE
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
6.2.10
6.2.11
6.2.12
Suction
6.3.1
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
Replacing the sieve in the
oxygen inlet
Replacing the O-ring in the
oxygen outlet
Dismantling the housing
Assembling the housing
Replacing the non-return valve
in the distributor block
Replacing the pressure gauge
Replacing the tubes
Replacing the toggle switch
Replacing the quick-release
coupling
Replacing O-ring of Walther
coupling
Replacing the pressure regulator
(
MODULE Oxygen: up to Device
No. 1616;
up to Device No. 1075;
MODULE Suction: up to
Device No. 1010)
Replacing the pressure regulator
(
MODULE Oxygen: from Device
No. 1617;
from Device No. 1076;
MODULE Suction: from
Device No. 1011)
MODULE
Replacing the sieve in the
oxygen inlet
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MODULE Combi:
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MODULE Combi:
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10
11
11
11
12
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13
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14
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16
19
20
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22
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23
24
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26
26
4
5
6
6
6
6
7
7
7
7
7
9
9
10. Technical Changes . . . . . . . . . . . . . . . . . . . . 44
6.3.2
6.3.3
6.3.4
6.3.5 Replacing the non-return valve
6.3.6 Replacing the pressure gauge . 27
6.3.7 Replacing the tubes . . . . . . . . 27
6.3.8 Replacing the toggle switch . . 28
6.3.9 Replacing the quick-release
6.3.10 Replacing the pressure regulator 28
6.4 Combi MODULE . . . . . . . . . . . . . . . . . 29
6.4.1 Replacing the sieve in the
6.4.2 Replacing the O-ring in the
6.4.3 Dismantling the housing . . . . . 29
6.4.4 Assembling the housing . . . . . 29
6.4.5 Replacing the non-return valve
6.4.6 Replacing the pressure gauge . 30
6.4.7 Replacing the tubes . . . . . . . . 30
6.4.8 Replacing the toggle switch . . 30
6.4.9 Replacing the quick-release
6.4.10 Replacing the pressure regulator 31
6.5 Interface MODULE. . . . . . . . . . . . . . . .32
6.5.1 Replacing the sieve in the
6.5.2 Replacing the O-ring in the
6.5.3 Dismantling the housing . . . . . 32
6.5.4 Assembling the housing . . . . . 32
6.5.5 Replacing the non-return valve
6.5.6 Replacing the pressure gauge . 33
6.5.7 Replacing the tubes . . . . . . . . 33
6.5.8 Replacing the quick-release
7. Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.1 Spare parts list . . . . . . . . . . . . . . . . . .35
7.2 Spare parts required for servicing . . . . . .37
8. Tools and test equipment . . . . . . . . . . . . . . . 39
8.1 General tools . . . . . . . . . . . . . . . . . . .39
8.2 Special tools. . . . . . . . . . . . . . . . . . . .39
8.3 Test equipment . . . . . . . . . . . . . . . . . .40
9. Technical data . . . . . . . . . . . . . . . . . . . . . . . 41
9.1 External oxygen flow volume . . . . . . . . . 42
9.2 Oxygen flow volume from inhalation
connection . . . . . . . . . . . . . . . . . . . . .42
9.3 Aspiration efficiency. . . . . . . . . . . . . . .43
Replacing the O-ring in the
oxygen outlet
Dismantling the housing
Assembling the housing
in the distributor block . . . . . . 27
coupling . . . . . . . . . . . . . . . 28
oxygen inlet . . . . . . . . . . . . . 29
oxygen outlet . . . . . . . . . . . . 29
in the distributor block . . . . . . 30
coupling . . . . . . . . . . . . . . . 30
oxygen inlet . . . . . . . . . . . . . 32
oxygen outlet . . . . . . . . . . . . 32
in the distributor block . . . . . . 33
coupling . . . . . . . . . . . . . . . 34
. . . . . . . . . . . .
. . . . .
. . . . .
26
26
26
© Copyright Weinmann GmbH & Co. KG.
The content and presentation are copyright protected and may only be used by authorised Weinmann Service Partners in the
course of their service operations. The content must not be reproduced or passed on to third parties. The complete documents
must be returned on termination of the cooperation with Weinmann.
2
11. Repair and inspection log . . . . . . . . . . . . . . 45
11.1Oxygen MODULE . . . . . . . . . . . . . . . 45
11.2Suction MODULE . . . . . . . . . . . . . . . . 46
11.3Combi MODULE . . . . . . . . . . . . . . . . 47
11.4Interface MODULE . . . . . . . . . . . . . . . 48
3
Introduction
For decades, Weinmann has developed, manufactured and distributed equipment for oxygen and
inhalation therapy and for emergency medicine.
In 1980, Weinmann launched the first MODULES
on the market.
The MODULES were permanently installed in a vehicle or alternatively, for mobility purposes, mounted on the support plates LIFE-BASE II and LIFE-BASE
Mini II.
You can use the Modules individually, connect up
to three Modules in series, or combine them with
the MEDUMAT respirator. In this way, you need
only one oxygen connection, and where space is
limited, several functions are available simultaneously.
The modules serve the following purposes:
• Oxygen MODULE:
Oxygen inhalation 0 to 15 l/min.
• Suction MODULE:
Extraction, infinitely variable from
0 to -0.5 bar.
• Combi MODULE:
Oxygen inhalation 0 to 15 l/min, extraction
preset at -0.5 bar.
• Interface MODULE:
Connection to an external oxygen supply 2.7
to 6.0 bar.
The aim of these service and repair instructions is
to familiarise you, as a knowledgeable expert, with
the Module in terms of function, technology and repairs. In conjunction with the training you have already received from Weinmann, you are now a
"trained, qualified expert" and are able to instruct
your clients correctly, rectify faults yourself, and
perform the functional checks described in the instructions for use, as well as conduct any repairs
which may be necessary, as outlined in these service and repair instructions.
In the event of a guarantee claim, the module should
be returned to Weinmann.
To enable us to process any guarantee or goodwill
claims, please return the consumer's proof of purchase (invoice) together with the appliance.
Repair and maintenance work must be carried out
only by Weinmann or by knowledgeable expert
staff.
You are responsible for repairs performed by yourself
and for the warranty thereof!
Only original Weinmann spare parts should be used
for repair purposes.
Please remember:
Your customer trusts you and relies on your expertise, just as you rely on Weinmann.
Note:
The following information can be found in the instructions for use of the MODULE system:
• Safety instructions
• Mounting with accessories
• Operation of the individual modules and
extraction of secretions
• Hygienic preparation
• Warranty.
4 Introduction
1. Overview
Module
O
1 Oxygen MODULE
1 Suction MODULE
MODUL
Interface
0
1
5
5
1
bar
0
O
2
O
2
3 Combi MODULE 4 Interface MODULE
Connections and controls (on the Combi MODULE)
5 Oxygen inlet with non-return valve 6 Flow dial 7 Oxygen outlet
1
5
5
1
0
2
O
12 External oxygen
8 ON/OFF switch13 ON/OFF switch
9 Regulator
connection
11 Inhalation
connection
10 Vacuum connection
Overview 5
2. Description
-1,0
bar
O
2
-0,8
-0,6
-0,4
-0,2
0
0
5
10
15
l/min
O
2
0
5
10
15
l/min
O
2
2.1 Uses
Use
Increase of percentage oxygen volume in
inspiratory air
Creation of a vacuum to aspirate large
accumulations of blood, mucus, saliva and solid or
viscous food from the mouth, the pharyngonasal
cavity and the bronchial system.
Transmission of oxygen supply via couplings to
other equipment
Provision of external oxygen supply via coupling
head
The modules are not suitable for hyperbaric use
(pressure chamber).
2.2 Module combinations
You can use modules either individually or in series
of up to three modules.
Oxygen
MODULE
Suction
MODULE
Combi
MODULE
Interface
MODULE
X – X –
– X X –
X X X X
X X X X
It is also possible to connect up to three modules to
the MEDUMAT ventilator.
MODUL
Suction
MODUL
Oxygen
MODUL
Interface
2
O
2
O
Oxygen
Vac
Suction
O/I
MEDUMAT
Interface
2.3 Storage
If you are not intending to use a module for a long period, we recommend the following storage precautions:
1. Clean and disinfect the module (see ”9. Hygienic preparation“ in the operating
instructions).
2. Store the module in a dry place.
6 Description
3. Final Check
If the final check reveal defects or deviations from the specified parameters, neither the modules nor the
OMNIVAC should be used until these defects have been repaired.
We recommend you hold reserve stocks of the following items:
• washers for the tube connections
and inhalation connections WM 1145/31
• washers for connection socket WM 1145/68
3.1 Test resources required
• Blind plug G 3/8 WM 1231
• Cap WM 22204
• Set, supply test Medumat /
Modules WM 15440
• Set of test pressure gauges,
vacuum WM 15294
3.2 Preparations for final check
1. Connect module to 4.5 - 6 bar pressure supply
of the cylinder system.
2. Fully close pressure regulator (turn to left until it
meets the stop).
3.3 Entering device data
• Set, test Walther coupling,
module WM 15441
• Pressure gauge 0 – 6.3 bar, class 1.6
• Flowmeter 0 – 20 litres e.g.: Yokogawa or
EKU Vip-Ventilator / Pf 300
3. Set toggle switch to position 0.
4. If the lateral oxygen connection is not closed,
close it with cap WM 22204.
• Enter the device number and date of manufacture in the Test Record.
3.4 Check for leaks in the system
MODULE Oyxgen / Combi
1. Apply 6 bar to device and close pressure outlet.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
2. Screw blind plug onto inhalation outlet.
Final Check 7
3. Apply approx. 4.5 bar to the input.
4. Set toggle switch to position “1”.
5. Slowly turn pressure regulator until it reads 15 l/min.
6. Close pressure supply.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
7. Close pressure regulator again and remove blind plug.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
8. Set toggle switch on device to position “0” and open pressure regulator.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
MODULE Interface
1. Apply 6 bar to device and close pressure outlet.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
2. Set toggle switch to position “1”.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
The O2 pressure indication for the module must not deviate by more than ± 0.2 bar /min.
MODULE Suction
1. Apply 6 bar to device and close pressure outlet.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
2. Set toggle switch to position “1”.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
Checking non-return valve for leaks (Oxygen, Combi and Suction module)
1. Set toggle switch to position “0”.
2. Connect pressure supply to external supply, e.g. Walther coupling (testing tube WM 15441), apply
6 bar pressure and close.
Requirement: Pressure indication must not fall by more than 0.1 bar/min.
Repairing leaks
Always keep a stock of washers for the connections available
1. Prepare a soap/water solution using nonperfumed soap.
2. Wet all the screw and hose connections with
the solution. Bubbles will form at the site of the
leak.
3. Depressurise the system (To do this, first close
the oxygen bottle. Switch on the module briefly and then switch it off again.)
4. Change the defective washers.
5. Recheck for leaks.
8 Final Check
3.5 Checking inhalation function
MODULE Oyxgen / Combi
1. Connect inhalation outlet to a flowmeter and apply 4.5 bar pressure to the module.
2. Set flow at module to 6 l/min.
Requirement: Reading must not deviate by more than ±0.6 l/min.
3. Set flow at module to 10 l/min.
Requirement: Reading must not deviate by more than ±1.0 l/min.
4. Set flow at module to 15 l/min.
Requirement: Reading must not deviate by more than ±1.5 l/min.
5. Reduce input pressure to 2.7 bar (dynamically, at 80 l/min).
6. Switch on module and fully open pressure regulator.
Requirement: Pressure gauge reading must reach an output of at least 10 l/min.
7. Close pressure regulator and set toggle switch to position “0”.
3.6 Testing vacuum
MODULE Combi/ Suction
1. Screw the pressure supply onto the pressure inlet.
2. Reduce input pressure to 2.7 bar (dynamically, at 80 l/min).
3. Connect vacuum gauge to vacuum outlet.
4. Set toggle switch to vacuum.
Requirement: The vacuum reading must reach at least 0.35 bar.
5. Set inlet pressure to 4.5 bar.
Requirement: The vacuum reading must reach at least 0.55 bar. The device reading must not deviate
from the test gauge reading by more than ±0.05.
6. Connect vacuum connection to Rotameter.
Requirement: The suction performance must be greater than 8 l/min (flowmeter).
MODULE Suction
1. Set toggle switch to position “1”.
2. Set pressure regulator to maximum vacuum.
Requirement: See vacuum testing in section MODULE Combi/Suction.
Final Check 9
3.7 Checking aspiration function
Necessary with the Suction MODULE and the Combi MODULE
1. Open the valve of the oxygen bottle slowly.
2. Switch on aspiration.
3. Suction MODULE:
Turn the regulator knob 9 as far right as it will
go. Remove the vacuum tube and hold vacuum connection 10 closed.
Combi MODULE:
The vacuum is locked at ≥ – 0.5 bar (at
4.5 bar O2 input pressure) and cannot be read
off the manometer 6 directly. In this case it is necessary to connect the Weinmann test manometer
WM 15294 to vacuum connection 10.
4. When the manometer 6 on the Suction
MODULE or the test manometer connected to
the Combi MODULE are showing a constant
reading, this should be not less than – 0.5 bar
at an O2 input pressure of 4.5 bar.
5. To check the OMNIVAC aspirate collection
set for leaks, replace the vacuum tube and
hold the opening of the end piece closed.
6. A reading of at least – 0.5 bar must be obtained within 30 seconds.
If this level is not reached, the connections must
be checked for leaks.
10 Final Check
4. Servicing
Important:
Remember: a functional check must be performed after every repair.
We recommend having all maintenance work, servicing and repairs carried out either by the manufacturer
Weinmann or by a qualified technician.
4.1 Intervals
The following checks must be carried out to ensure that the modules always function correctly.
Before each use:
• Carry out a final check (see sections 3.4 to
3.7).
After each use
• Clean, disinfect or sterilise the device and its
components (see “9. Hygienic preparation” in
the operating instructions).
• Carry out a final check (see sections 3.4 to
3.7).
4.2 Servicing
The devices must be serviced every 4 years.
The following points must be covered:
At least every 6 months, if the equipment has not been used in the intervening period:
• Carry out a final check (see sections 3.2 to
3.4).
After every repair:
• Clean, disinfect or sterilise the device and its
components (see “9. Hygienic preparation” in
the operating instructions);
• Carry out a final check (see sections 3.4 to
3.7).
• Visual inspection:
– mechanical damage;
– labelling of components.
• Pressure indicator accuracy;
• Freedom from leaks;
• Oxygen delivery rate and aspiration capacity;
• Renewal of parts subject to wear / mandatory
change parts (see “7.2 Spare parts required
for servicing” on page 37);
• Functional check in accordance with Test In-
structions / Test Record WM 22248 (see “3.
Final Check” on page 7 and see “11. Repair
and inspection log” on page 45 to 48).
Servicing 11
Every 4 years:
• Servicing of oxygen fittings (e.g. pressure reducers) by the manufacturer or by specialist personnel specifically authorised by the manufacturer.
Every 10 years:
• Repeat testing of the conventional steel or aluminium oxygen bottles by the the responsible testing organization. The test deadline can be found on the shoulder of the cylinder.
4.3 Disposal
Do not dispose of the unit with domestic waste. For proper disposal of the device and its components, please contact a certified waste disposal site for electronic goods. Ask your Environmental
Officer or local council for the address. Appliance packaging (cardboard and inserts) may be disposed of in the paper recycling bin.
5. Troubleshooting
Problem Cause of defect Elimination
Module will not switch on Module defective Arrange for repair
Oxygen bottle empty Replace oxygen bottle
Module will not function
Exceptionally high oxygen
consumption
No vacuum or vacuum too weak
or inadequate O2 flow for inhalation
Noisy inhalation/aspiration Moisture in block Replacement by Weinmann
Toggle Switch does not stay in
switch position
Pressure gauge does not reach zero
position
Module incorrectly assembled Check assembly
Tubes wrongly connected Check connections
Find and repair leak
Leak in oxygen tubes
Leak in system
Moisture in block Replacement by Weinmann
Module defective or clogged
internally.
Toggle Switch pressure plate
worn
Pressure gauge defective
(pressure hammer through open
pressure regulator 9 when switching on)
(see “3.4 Check for leaks in the
system” on page 7)
Eliminate leak
(see “3.4 Check for leaks in the
system” on page 7)
Arrange for repair
Replace toggle switch
(see “6.2.8 Replacing the toggle
switch” on page 22)
Replace the pressure gauge
(see “6.2.6 Replacing the pressure gauge” on page 20)
12 Troubleshooting
6. Repair information and repair instructions
6.1 General
• Please observe the safety instructions in the instructions for use of the Module system.
• All handling of the device pre-supposes a precise knowledge of and compliance with the instructions for use and the service and repair
instructions.
• Please carry out only the repairs described in
these service and repair instructions. Otherwise, perfect functioning of the Modules cannot be guaranteed.
• When you replace components or individual
parts, please use original Weinmann parts
only.
6.2 Oxygen MODULE
6.2.1 Replacing the sieve in the oxygen inlet
Tools required:
• Please ensure that your hands and workplace
are clean when carrying out repairs.
• Under no circumstances should you open the
screw connection in the inhalation outlet 11,
otherwise the set parameters will be altered!
• After each repair, please perform a final check
(see „3. Final Check“ on page 7).
• Note:
The item numbers used in the following text
match the item numbers in the spare parts list
on page 29 and the overview on page 4.
• Slotted screwdriver,
• Tweezers.
1. Unscrew pressure screw 49 from oxygen
inlet 5.
2. Using the tweezers, remove the sieve set 27.
3. Carefully insert a new sieve set 27 into the
oxygen inlet.
4. Screw pressure screw 49 firmly into oxygen inlet again.
2749
Repair information and repair instructions 13
6.2.2 Replacing the O-ring in the oxygen outlet
Tools required:
• Open-ended spanner SW 16 (only necessary if the oxygen outlet 7 is sealed with the cap 47).
1. If the oxygen outlet 7 is sealed with the
cap 47, remove the cap using the open-ended
spanner (SW 16).
2. Pull the O-ring 39 from the connection.
3. Wet a new O-ring using the oxygen lubricant
Belerub (WM 14902) and push it onto the
connection.
O
4. Using open-ended spanner SW 16, gently
tighten cap 47. Do not over-tighten!
6.2.3 Dismantling the housing
Tools required:
• Crosstip screwdriver, size 1,
• Open-ended spanner SW 7,
• Open-ended spanner SW 19 (only with AGA coupling),
• Open-ended spanner SW 22,
• Guide pipes, for toggle switches (from Weinmann),
• Special locknut tool G 3/8 and special tool from Set WM 15348.
47
39
1. Twist the knob 45 as far as it will go to the left
so that you will have a reference point later on
when assembling.
2. Release the lid 46 from the knob 45.
3. Hold the knob steady using the special tool to
stop it from turning, and loosen the lock screw.
Note:
Do not unscrew the screw completely; otherwise,
the knob will be dismantled into its component
parts.
4. Pull off the knob 45.
5. If your Module is equipped with an AGA coupling, loosen it with an open-ended spanner
(SW 19).
6. Unscrew union nut at inhalation
connection 11.
7. Screw the special locknut tool onto the inhalation connection 11.
45
46
14 Repair information and repair instructions
8. Clamp the special locknut tool in a vice with
protective jaws.
9. Tighten the nuts of the special locknut tool
against the inhalation connection 11 using an
open-ended spanner (SW 22).
10. Turn entire housing to left to undo connection 11.
If it is not possible to undo connection 11, pro-
11
ceed as described from step 11. onwards and
pull the housing apart. Clamp the special locknut tool in the vice again and use an open-ended spanner SW 22 to undo the block as
shown in the diagram.
11. Place the device on a non-slip surface and unscrew the six screws 32 from the rear panel of
the housing.
12. Pull off the housing base section 16 and fold it
away.
13. Next, remove the supply tube from the distributor block by pushing back the sleeve of the
angular bush 40 and pulling out the tube.
32
16
14. Unscrew the threaded connection for inhalation 11 at the handle of the special locknut
tool.
15. Next, lift off the upper housing section 15.
16. Using an open-ended spanner (SW 7), release the swivel screw connection 42 from the
pressure gauge 6.
17. Press the pressure gauge 6 out of the
mounting 14.
Tip:
You will find the pressure gauge easier to remove
if you dribble a small amount of spirit between
the pressure gauge and the mounting.
14
40
6
42
Repair information and repair instructions 15
6.2.4 Assembling the housing
Tools required:
• Crosstip screwdriver, size 1,
• Open-ended spanner SW 7,
• Open-ended spanner SW 19 (only with AGA coupling),
• Open-ended spanner SW 22,
• Guide pipes, for toggle switches (from Weinmann),
• Special locknut tool G 3/8 and special tool from Set WM 15348.
1. Wet the edge of the pressure gauge 6 with a
little spirit and press it into the mounting 14.
Observe the installation position so that the display remains clearly legible!
2. Pass the rubber bead over the pressure gauge
with your fingers.
3. Make sure that the four rubber buffers 36 in the
housing base section 16 are firmly seated (insert with a little spirit if necessary).
4. Carefully insert the two blind plugs 35 into the
holes on the underside of the housing. The flattened sides should be pointing towards the
base of the device.
5. Carefully insert the pneumatic block into the
housing base section.
6. For easier movement, disconnect the supply
tube 25 from the pnuematic block.
7. Push the supply tube into the angular bush 40
as far as it will go.
8. Rotate the angular bush 40 in the opposite direction of the oxygen inlet 5.
40
36
16
20
35
9. Push the supply tube into the bush 40 of the
pneumatic block as far as it will go.
16 Repair information and repair instructions
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