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ACG+ 
Service & Troubleshooting Manual 

Int. Approved 

Document ref: P0149-825-00 

October 2022 

Page 6 of 37 

 

 

Copyright © 2022 Analox Ltd. All Rights Reserved. 

 
 

Commercial in Confidence 

1

 

Safety information 

 

 

WARNING:  READ THE SAFETY INFORMATION FULLY BEFORE USING THE 

ANALOX ACG+

.

 

 

1.1

 

Electrochemical sensors (oxygen and carbon monoxide) 

 
Electrochemical sensors contain toxic compounds. Under normal conditions the sensor will be safely 
sealed. To prevent leakage, the unit must not be exposed to temperatures outside the specified range, 
or be exposed to organic vapours, which may cause physical damage to the body of the sensor. The 
unit must not be stored in areas containing organic solvents or in flammable liquid stores. 
 
When the life of the sensor has expired or it is leaking or otherwise damaged it must be disposed of 
safely in accordance with local regulations. 
 

The carbon monoxide cell contains an acidic electrolyte (sulphuric acid) whilst the oxygen cell contains caustic 
electrolyte (potassium hydroxide). In the event of an accident, use the following first aid procedures. 
 

Table 1     Electromechanical sensor first aid procedure 

Body 

Part 

Effect 

First Aid Procedures 

Skin 

Contact could result in a chemical 
burn.  
 
Persons with pre-existing skin 
disorders may be more susceptible to 
the effects of the substance. 

Immediately flush the skin thoroughly 
with water for at least 15 minutes.  
 
Remove contaminated clothing and 
wash before re-use.  
 
Obtain medical advice if continued 
irritation. 

Ingestion  Corrosive. May cause sore throat, 

abdominal pain, nausea, and severe 
burns of the mouth, throat, and 
stomach, and may be fatal. 

If swallowed DO NOT INDUCE 
VOMITING.  
 
Wash out mouth thoroughly with 
water and give plenty of water to 
drink.  
 
Obtain medical advice immediately 

Eye 

Persons with pre-existing eye 
problems may be more susceptible to 
the effects of the substance. 
 
Corrosive. May cause redness, pain, 
blurred vision, and eye burns.  
 
Contact can result in the permanent 
loss of sight.  

Irrigate thoroughly with water for at 
least 15 minutes.  
 
Obtain medical advice immediately. 
 
 

Содержание ACG+

Страница 1: ...ACG Service Troubleshooting Manual Service Troubleshooting Manual Commercial in Confidence...

Страница 2: ......

Страница 3: ...oxide cell replacement 16 4 1 3 Replacing the CO cell PCB MEC 233B 18 4 1 4 VOC maintenance 22 4 1 5 Water vapour sensor replacement 25 4 2 Filter replacement 26 4 2 1 Activated charcoal filter replac...

Страница 4: ...ial in Confidence List of tables Table 1 Electromechanical sensor first aid procedure 6 Table 2 List of spares 9 Table 3 List of accessories 10 Table 4 6 monthly service for ACG 11 Table 5 12 monthly...

Страница 5: ...hlight potential hazards and safety risks Notes are used to provide supplementary information that is not hazard related WARNING THIS INDICATES A POTENTIALLY HAZARDOUS SITUATION THAT IF NOT AVOIDED CO...

Страница 6: ...whilst the oxygen cell contains caustic electrolyte potassium hydroxide In the event of an accident use the following first aid procedures Table 1 Electromechanical sensor first aid procedure Body Pa...

Страница 7: ...ves when cleaning any spills Should electrolyte contact skin then the affected area should be washed thoroughly with copious water and medical advice sought if there has been any contact with the eyes...

Страница 8: ...October 2022 Page 8 of 37 Copyright 2022 Analox Ltd All Rights Reserved Commercial in Confidence 2 Introduction This manual describes the maintenance procedures for the ACG and answers common trouble...

Страница 9: ...VOC sensor PCB MEC 233C 11 Water vapour sensor 6000 0094 Replacement VOC sensor parts 12 Disposable electrode stack 9100 2060 ES 13 10 6 eV replacement lamp 9100 2060 LP 14 Replacement spring 9100 20...

Страница 10: ...gen balance nitrogen Contact Analox or source locally 10 Zero calibration gas For CO Sensor only 20 9 oxygen balance nitrogen Oxygen only span calibration gas For part number ACGPABXXXXX Contact Analo...

Страница 11: ...Internal particulate filter 2533 1008 3 VOC electrode stack removal tool 9300 1021 Table 5 12 monthly service for ACG Item Description Part no 1 10 6 eV replacement lamp 9100 2060 LP 2 Internal partic...

Страница 12: ...y 3 months Replace PID lamp or whole PID cell Lamp 5 000 hours 6 months Cell 5 years or as required Carbon dioxide sensor Replace sensor 6 years Water vapour sensor Replace water vapour sensor 2 years...

Страница 13: ...is received check that the cell has not leaked The cells are themselves sealed and do not under normal circumstances present a health hazard however if leakage of the electrolyte has occurred use rubb...

Страница 14: ...ce 3 Using a terminal screwdriver push down the clamp release button to release the clamp and gently pull the cell wire from the clamp Repeat this for both the red and black wires 4 Unscrew the green...

Страница 15: ...clamp release button Gently pull on the wire to ensure that the wire is held by the clamp Repeat this for both the red and black wires taking note of the correct polarity as shown below 7 Refit the e...

Страница 16: ...at the cell has not leaked The cells are themselves sealed and do not under normal circumstances present a health hazard however if leakage of the electrolyte has occurred use rubber gloves and wear c...

Страница 17: ...te the cell PCB connector clockwise to release from the cell holder 4 Disconnect the cell from the PCB connector 5 Connect the new cell to the PCB connector Note that it will only connect in one orien...

Страница 18: ...WING A CARBON MONOXIDE CELL REPLACEMENT A FULL CALIBRATION MUST BE PERFORMED SEE P0149 801 FOR DETAILS ALSO A REPLACEMENT NOTIFICATION RESET SHOULD BE PERFORMED SEE P0149 801 ACG USER MANUAL FOR DETAI...

Страница 19: ...age 19 of 37 Copyright 2022 Analox Ltd All Rights Reserved Commercial in Confidence 3 Rotate the CO PCB connector clockwise to release from the CO holder 4 Disconnect the CO cell from the PCB connecto...

Страница 20: ...sponding Red Black and yellow terminals of connector J3 Release the terminal clamp button The clamp should now have a firm grip on the wire Gently pull on the wire to confirm that the wire is firmly h...

Страница 21: ...ercial in Confidence 8 Feed the cell PCB through the bulkhead and refit the lid 9 Connect the CO cell to the new PCB connector Note that it will only connect in one orientation 10 Fit the cell in to t...

Страница 22: ...e sensitivity of the sensor reduces over time Replacement of the PID lamp should be performed after 5000 hours of use Replacement of the electrode stack should be performed only if the sensor has been...

Страница 23: ...lots on the sides of the sensor as shown keeping a finger on top of the stack so as it does not spring away from the sensor and so that the spring and lamp cannot pop out upon removal 4 Carefully remo...

Страница 24: ...of the cotton bud 8 Ensure that the lamp is completely free from any signs of contamination prior to refitting 9 Carefully place the lamp into the rear recess of the electrode stack this will be held...

Страница 25: ...for the replacement water vapour sensor is 6000 0094 1 Disconnect the cable from the end of the water vapour sensor 2 Using a 30mm spanner part number 9300 1020 loosen the sensor from its housing and...

Страница 26: ...e ACG has two types of user changeable filters These are the internal activated charcoal filter and an internal hydrophobic particulate filter 4 2 1 Activated charcoal filter replacement The activated...

Страница 27: ...he above process to fit a new filter 4 3 Service requirements Certain elements of the ACG system are recommended to be replaced every six years to ensure optimum operation Table 8 below shows the main...

Страница 28: ...for the sensor and remove the old oring 2 Take a new 11 1mmOD x 8 1mmID oring 2323 0017X and refit to the flow adaptor replace the flow adaptor to the sensor 4 3 2 Replacing the PID cell The following...

Страница 29: ...ge 29 of 37 Copyright 2022 Analox Ltd All Rights Reserved Commercial in Confidence 2 Use a flat blade screwdriver to pop out the PID holder from the sensor bulkhead fitting 3 Rotate the PID PCB connec...

Страница 30: ...ect in one orientation 6 Fit the PID into the housing and rotate anti clockwise to lock in place 7 Refit the PID holder into the sensor bulkhead 8 Refit the flow adaptor into the sensor inlet NOTE FOL...

Страница 31: ...age 31 of 37 Copyright 2022 Analox Ltd All Rights Reserved Commercial in Confidence 2 Use a terminal screwdriver to pop out the PID holder from the sensor bulkhead fitting 3 Rotate the PID PCB connect...

Страница 32: ...825 00 October 2022 Page 32 of 37 Copyright 2022 Analox Ltd All Rights Reserved Commercial in Confidence 5 Remove the lid from the MEC sensor housing and feed the cell PCB through the bulkhead 6 Disc...

Страница 33: ...PCB back through the bulkhead and refit the lid Using a terminal screwdriver press firmly down on the terminal clamp button to open the clamp While still pressing down on the terminal clamp button in...

Страница 34: ...alox Ltd All Rights Reserved Commercial in Confidence 9 Connect the PID to the PCB connector PCB Note that it will only connect in one orientation 10 Fit the PID into the housing and rotate anti clock...

Страница 35: ...n sensor Replace electrochemical cell Approx 2 years or as required Carbon monoxide sensor Replace electrochemical cell Approx 2 years or as required VOC sensor Clean PID lamp and electrode stack As r...

Страница 36: ...alibration gas applied 8 To finish close the valve on the bottle flow regulator and close the inlet valve on the front panel then disconnect the calibration connector from the ACG by pressing the rele...

Страница 37: ...etric tube specific to the gas This is a feature that adds flexibility to the user to use a variety of tubes for any gas type If this is not possible then the ACG would not be suitable as the only tes...

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