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1. Maintenance Manual AP29 ECO 2 4 System Setup Typical setup ILS500 including the Sensistor ISH2000 together with an AP29 ECO and a test fixture See Figure 2 Probe Cable C21 Bus Cable Sampling Probe AP29 Leak Detection System ILS 500 Connector pilot air Sampling hose 3 Tracer gas gt Test object Gas cylinder Test fixture Gas line 3 Figure 2 Typical setup INFICON Maintenance Manual AP29 ECO 5 3 Operational Modes 3 1 Reference Gas Calibration Sequence Reference gas calibration sequence is shown in Figure 3 Within tolerance Calibration performed Calibration rejected Set REJECT output To Standby Figure 3 Reference gas calibration sequence flow chart 6 INFICON Maintenance Manual AP29 ECO 3 2 Measure Sequence Measure sequence is shown in Figure 4 Start Accumulation During D seconds Sampling During B seconds Set ACCEPT output Purge sensor During C seconds No Analysi ee Set REJECT ayer gt Purge level During A seconds output Set REJECT output Purge sensor During C seconds Purge sampling valve Purge sensor Purge sampling valve Purge calibration valve To Standby Figure 4 Measure sequence flow chart INFICON Maintenance Manual AP29 ECO 3 3 Sample Calibration Sequence Sample calibration sequence is shown in Figure 5 Yes Accumulation Duration D se2. a Make sure that the display shows Probe error b Open needle valve slightly until Probe Error message disappears c Start test sequence again d Close needle valve slowly to verify that switch opens at 75 of nominal flow If adjustment is not satisfactory open needle valve and repeat steps 8 11 Maintenance Manual AP29 ECO 9 3 5 4 12 To adjust the sampling flow switch set APC timers as follows A gt 100s B 0 C 20 and D 0 13 Repeat steps 9 12 This time adjust sampling flow switch B02 14 For best result Wait one hour and then check the adjustment again 15 Disconnect flow meter reinstall sample hose and install cover of AP29 ECO 16 Reset APC timers to correct values Replacing Flow Alarm Switches Refer to Figure 23 under Replacing the Valves and replace the defective flow alarm switch B01 or B02 as follows 1 Switch off system power 2 Shut off all gas and air supplies 3 Remove cover of AP29 ECO 4 Locate the switch you want to replace Refer to Figure 23 5 Disconnect the two cables Use a small screw driver to push the connectors off the tabs Do not pull on the cables Remove the two screws that hold the switch Lift the switch off and remove the o ring from around the vacuum port under the switch Make a cloth moist with alcohol Clean the o ring seat on the valve manifold with it pec we 2p dm Put the o ring or a new one around the vacuum
3. 284 Washer 3 2x7 591 317 Screw 591 745 Pump 591 740 591 371 N Differential flow alarm switch Ne 591 418 ON Orifice 3 2 cc s 591 433 X coupling plug NO O2 W ni W Un 00 I Uy INFICON Maintenance Manual AP29 ECO 41 Coupling C coupling 6 4 C coupling Cable Rubber foot D sub connector distance Sealing ring Filter M5 42 INFICON Maintenance Manual AP29 ECO i Ne m m E O N UI N Co Ne pi Un 101 Valve block 598 159 Valve block medium 598 164 i Probe H65 590 250 Bus cable 2 m 591 420 Table 5 Spare parts INFICON Maintenance Manual AP29 ECO 43 Electric Diagram 8 480d SALLOV 0936cdV X X X X GOA POA 0A ZOA ZON LON BE 2o aW 4 X E TE 1 1 17d Td i T N CN e co HOLO3NNOO ANS Q Nid Sc LO co CN O st co CN iN po co Oo CN co CN CN CN Tub LI As A D NE NT NT EN Une Me y Conan eis I e SE e a o e sh s N Z z E E E E E gt oO o 5 o gt o gt o gt O O O O O I JJ I q O INFICON Maintenance Manual AP29 ECO 44 Pneumatic Diagram co co a e Oe ee Ke ee IN9292 0236cdV jsneux3 UnnoeA Set Joy 92 c lt s LLI Fresh air 45 INFICON Maintenance Manual AP29 ECO 10 Technical Data Sensitivity using 5 H2 tracer gas 0 5 ppm or 3x10 5 atm cc s for direct
4. 3 with retaining o ring 4 Pull spacer out with a small screw driver 8 Remove filter disk 5 and o ring 6 9 Remove orifice 8 and valve spring 7 10 Clean valve bore with filtered compressed air Make sure that valve bore is free from dust Put probe on table again with valve bore facing up 11 New orifice is delivered in a brass body Open this and take out the spring and the orifice 12 Replace o ring 6 13 Install new orifice 8 INFICON Maintenance Manual AP29 ECO 14 Install valve spring 7 and filter disk 5 15 Place retaining o ring 4 around spacer 3 and push in to hold the valve filter assembly 16 Install H65 sensor or brass plug 1 and o ring 2 Tighten sensor plug with wrench 17 Repeat procedure to change the other orifice 18 Reconnect cable and switch on system again 19 Check and adjust flow switch See Adjusting flow alarm switches below 5 2 Adjusting Flow Alarm Switches Tools e Air gas flow meter Range 0 100 atm cc min for 0 1mm orifices 0 500 for 0 16 and 0 25 mm orifices e Needle valve e Small screwdriver shape minus to trim flow switch Service Mode ADC mV 2412 276 Locate 7 63 Signal 0 000 Measure 0 00E 00 Diode 597 591 20 Volume Menu IN_2 Measuring flow alarm_ Row 0 APC I O Time 0 0 ADC 2412 276 Inputs Loc 0 00E 00 01234 Meas 0 00E 00 Back IN_4 Sampling flow alarm_ INFICON Maintenance Man
5. 31 50 Replicme the Valves cra eri Mes ee da 22 6 Dhustrated Parts DreakdOWITos uomen ido ev CRISE CC I PaL ates he cod 33 1 Spare Pasada a dot De ten da eL 39 Os Electro Didactica 43 9 Pn uttiatc DIdP EGfll 2 ovS wE x d SP IE eee ie imu eee ae Se Se et 44 10 3ecH tcal Dad ic E eee Br hate ba aoe Seah 45 IL Contact Informa Osere ep V Eee dks doe tete parece har ac arces Ee 46 INFICON Maintenance Manual AP29 ECO 1 1 Introduction Together with Hydrogen Leak Detector Sensistor ISH2000 the Sampling probe AP29 ECO forms a complete industrial leak detection unit to be incorporated into an automatic leak tester The AP29 ECO is intended for intermittent or continuous sampling of a test point or test chamber It performs quick and accurate accept reject testing Note The AP29 ECO can only be controlled by Leak Detector Sensistor ISH2000 with software version 3 00 or higher Upgrade kit can be ordered from your supplier Typical applications for the AP29 ECO are e Integral testing in accumulating test chamber e Point testing of pipe joints For example refrigeration and automotive pipes e Automatic surface or weld seam scanning 2 INFICON Maintenance Manual AP29 ECO 2 1 2 2 System Description General The standard configuration has a sniffer flow rate of 3 0 std cc s which gives a direct sniffing sensitivity better than 3x10 5 std cc s 4 g yr R134 Considerably higher sensitivi
6. sample flow Result Make sure that the pressure guard switches within 75 10 of normal sample flow Sensistor ISH2000 indicates flashing red LED and the display shows Probe Error Note For further information refer to the Sensistor ISH2000 Manual Operation Test Apply following settings on the Sensistor ISH2000 APC settings Time A 5 Bz5 C 5 D 5 Leak level 20 ppm Purge Level 50 ppm Calibration factor C 10 K 1 old program version Calibration coefficient 10 Connect 10 ppm calibration gas to the Reference gas inlet 0 3 1 0 bar Action e Press IN_1 for calibration Result Calibration ok Connect fresh air to the Sample Inlet on the AP29 ECO See Figure 19 Armee adixen cE Sample inlet Figure 19 Sample inlet INFICON Maintenance Manual AP29 ECO 23 24 Action e Make a measurement Result No or small signal lt 2ppm Make sure that the LED OUT_6 on BTB 1s lit after measurement approximately 10 seconds Connect 10 ppm calibration gas to the sample inlet Note Do not exceed atmospheric pressure Action e Make a measurement on 10 ppm calibration gas Result Make sure that the measured value is the same as calibration value 10 Make sure that the LED OUT_6 on BTB is lit after measurement approximately 10 seconds General Settings Reject Level Figure 20 Reject Level INFICON Maintenance Manual AP29 ECO 4 3 Action e Adj
7. sniffing with standard sniffer flow Sniffer flow alarm Set to 75 of nominal flow Reference gas Most commonly 10 ppm H2 in air Hydrogen concentration should be within 1 to 400 ppm and within 50 of alarm level Reference gas pressure 0 03 0 1 MPa 0 3 1 barg 4 3 15 psig Reference gas consumption Typically 15 std cc s at 0 05 MPa 0 5 barg 7 psig IP54 if mounted with ventilation grid facing downwards Dimensions 3 6 x 7 3 x 10 2 in 92 x 185 x 260 mm i i Solenoid valves 24 VDC 10 0 35 W each Sniffer flow options Standard flow 3 atm cc s with std 0 16 mm orifice Optional flow 1 atm cc s with 0 10 mm orifice 46 INFICON Maintenance Manual AP29 ECO 4 INFICON INFICON AB Box 76 SE 581 02 Link ping Sweden Phone 46 0 1335 5900 Fax 46 0 13 35 59 01 www inficon com E mail reach sweden inficon com
8. 5 om om om om om om om om om om om co co co om oc co oc co co co co co a Ref Gas AP29ECO CCGM I I dk I I Sample NC I a I I o 2 rj j AM i I A l I I I I I I I I 1 sos 3 b Mm AM ale I I I I I I I I I I I I I KO Ue I e I I I I Ad l I A I I I en I E 1 9 Exhaust 1 O t q Fresh air ro y lt Figure 13 Under 1 5 seconds the sensor is rinsed with Fresh air Under 1 5 seconds the sensor is rinsed with Fresh air If the sample has a hydrogen concentration over Purge Level the pump MOI starts and purges the sensor until the sensor signal goes to LO See Figure 13 16 INFICON Maintenance Manual AP29 ECO 3 4 5 Purging There are two types of purging 1 when a measuring has been done Timer C 2 when the Purge Level has been passed Purging after a measure period is shown in Figure 14 FN XT ZT ZT FT TFT ST TFT TFT TT A A A A A S Ref Gas AP29ECO CCGM Sample Exhaust Fresh air Figure 14 Purging after the measuring has been done INFICON Maintenance Manual AP29 ECO 17 3 4 6 Purging after the Purge Level has been passed Under 3 5 seconds or until the sensors gives no more signal the pump is running and purging both sensor and sample hose Observe that the sample hose now has outlet flow Under this time valve YOS opens shortly into the clean calibr
9. AN ae 2 1 Q D el e a o gt Exhaust O I O I Lu D ii Fresh air o y I Figure 10 When calibration passed or failed 3 seconds After 3 seconds When calibration passed or failed Air purging the valve Y05 and the sensor see Figure 10 INFICON Maintenance Manual AP29 ECO 19 3 4 3 Sampling Reference air Ir Sample Reference gas aaa om om om om om om om om om g Ref Gas AP29ECO CCGM Vacuum Exhaust Sample Exhaust Fresh air AP29ECO SPM Figure 11 After accumulation time After accumulation time Timer D the Valve Y02 will go from LO to HI mode The Gas Sample Sniffing goes directly to the exhaust and the sensor is purged with Fresh air under B seconds Timer B See Figure 11 14 INFICON Maintenance Manual AP29 ECO 3 4 4 Analysing Step 1 ew em em D eo D eo oe D D D D ow sw D ow D D ow ow ow ow wo CD CD D ow D ow ow ow ow a Ref Gas AP29ECO CCGM D 5 O lt c S LLI i I co Sample iar I I rma B NC D G 7 M amp oo o 0 I I I I a ana I I Doe I x a a I 1 D Exhaust E AN e Fresh air E NV a I CN Figure 12 Under 0 2 seconds A seconds Timer Under 0 2 seconds A seconds Timer the sample will pass the sensor See Figure 12 INFICON Maintenance Manual AP29 ECO 1
10. Publication INFICON Part number nipb69e1 a 1302 All information can be modified without prior notice AP29 ECO Sampling Probe Service Manual 4 INFICON Contents D MT OUUCHIOM al ofc nead cade a don ee eek wate wale dde A 2 2 System Description 42 444 gt ce aran ara a de aes b e de hb ahh e ase 3 Zub SS Ey ende utet aR et As THES el E eet eae sores fato ad loh 3 POP NEVER SUERTE TTC EET TOTO OQ D a 3 2 9 Maa ANUS ase ed er Be Nese SA da d etu 4 ZU ES NS bon a 5 Si Operational ModE aeeaiei whe tome doce mid dale c AC eee SRS Red ate eR Ae ar ee 6 3 1 Reference Gas Calibration Sequence 6 2525 Measure SeduetiCe vaca tee atte HORE bud eae dew Bann d ib reeds 7 3 53 Sample Calibration Sequence ou s ee oe bs eb eed owes ewe ses 8 o ES suo EN sde as asap eld Soe BAe RES irk ee RE eal anaes 9 A PURCHOMTESE mmmmmmmmmmrm rr E AAA Rc DR Rp A 19 d BUNCHON Te SL de d ERE t ir en a urine Bon ee ee ea EP E 19 42 Operation lesi 243445445 ree is p Cu qe Rut Sak ke dta cda lo 23 49 Jiphiness COMO dE 25 5 Maintenance and Servic ain seek tos deca ennemi a eque qi okra eid eda Eod 2 5 1 Changing Sniffer Flow Orifices 21 5 2 Adjusting Flow Alarm Switches 29 5 3 Replacing Flow Alarm Switches iua su men o at Ae messe 31 5 4 Replacing Sample or Purging Pump
11. as Port If you use the Sample Inlet Port to do the calibration instead then the steps 2 through 4 are not used 10 INFICON Maintenance Manual AP29 ECO A A A ww ww A SH SB SF S SF SS S Ref Gas AP29ECO CCGM to 5 5 2 oO O Z co x lt gt Lu s Cae VIN AM Paro I lt p Sample B01 EM SPM B02 Em gt Exhaust Fresh air AP29ECO Figure 8 Calibration gas flow under 0 5 seconds Under 0 5 seconds Calibration gas Reference gas flows to the exhaust Reference air Fresh air flows pass the sensors See Figure 8 INFICON Maintenance Manual AP29 ECO 11 a A A a oo A A D D D D ow ow ow ow D ow ww ow ww S S S S Ref Gas AP29ECO CCGM E to 5 2 oO O Z co gt lt gt Lu I lt p Sample 5 P i T 1 E E L B01 E Q D 2 1 SPM B02 on Exhaust Fresh air AP29ECO Figure 9 Calibration gas flow under the calibration period Calibration gas Reference gas flows to the exhaust and passes the sensor under the calibration period See Figure 9 12 INFICON Maintenance Manual AP29 ECO a a a o oo A o D D o ow ww D ww SF SS S S Ref Gas AP29ECO CCGM I I I I lt p Sample I I gt a ee TZ I I I I I ee i Cu Die T T
12. ation part of the manifold See Figure 15 a a a om om om om om om om a om om co oc oc co oc oc a o oc co oc co Ref Gas AP29ECO CCGM Sample Exhaust Fresh air Figure 15 Purging if Purge Level has passed 18 INFICON Maintenance Manual AP29 ECO 4 1 Function Test To verify that the AP29 ECO unit is working follow the steps described below Use these tools Leak Detector Sensistor ISH2000 Bus Test Box BTB AP29 ECO driver loaded for the calibration gas port Flowmeter 0 500ml min FM1 Flowmeter 0 150ml min FM2 Calibration gas 10ppm 0 3 1bar Tracer gas 5 H 95 N Fresh air Reference air Function Test Refer to Figure 16 Connect Calibration gas 10 ppm to AP29 ECO Sensistor ISH2000 set for AP29 ECO to the BTB AP29 ECO to BTB Sensor cable Sensistor ISH2000 to AP29 ECO Flowmeter to the Sample port AP29 ECO INFICON Maintenance Manual AP29 ECO 19 Figure l6 Function test Table 2 Key to Figure 16 20 INFICON Maintenance Manual AP29 ECO Check operation pressure guards Apply following settings on the Sensistor ISH2000 APC settings Time A 0 B 60 C 0 D 0 Calibration factor C 10 K 1 old program version Calibration coefficient 10 Action e Press IN Oon the Bus Test Box BTB Result The flow meter shows a flow 150 200cc min Note For further information refer to the Sensistor ISH2000 Manual Check Opera
13. conds Sampling Duration B seconds Expose sensor to sampled gas Duration B seconds Calibrate sensor Within tolerance output Figure 5 Sample calibration sequence flow chart 8 INFICON Maintenance Manual AP29 ECO 3 4 Gas Flow Visual descriptions over the gas flow are presented below 3 4 1 Stand by Mode Reference air Sample nes Reference gas A Ref Gas AP29ECO CCGM amp D 5 5 oO o E oO x lt gt LU I I I Sample I I I I I I I I I I Sp PO oh I I I I I I I I I KO Ue I a I I I fl I en 1 9 gt Exhaust O f I a Fresh air a I Figure 6 Gas flow in Stand by mode INFICON Maintenance Manual AP29 ECO 9 3 4 2 Calibration Reference air Sample Reference gas Lr Step 1 a ww a om om co oc oc oc o co oc oc co oc om oc co oc co co g Ref Gas AP29ECO CCGM un O cc Vacuum Exhaust I I I Sample I I I I I I I I I I prese I I I I I I I I I IK Gee I N I I I f Wa I a e I em i 9 gt Exhaust Q I t I Q Fresh air a I lt Figure 7 Gas flow in calibration mode under 0 3 seconds Under 0 3 seconds No Calibration gas Reference gas Reference air Fresh air flow passes the sensor H65 See Figure 7 This is only valid if you do the calibration through the Reference G
14. ed by changing to another orifice diameter The sample flow orifice is placed behind the hydrogen sensor The by pass orifice is placed behind the brass plug next to the hydrogen sensor The orifice is mounted in a valve core that is spring loaded to a valve seat This constitutes a check valve configuration set to open if the vacuum line is subject to over pressure Over pressure can result from restricted exhaust The check valve protects the flow switches from damage by over pressure Note Use orifices of same size both for sampling and for analysing flow This operation must be performed in a clean environment with low dust concentration Be very careful not to lose any parts Spare parts of the flow regulating assembly are listed below Reference numbers refer to the Figure 21 INFICON Maintenance Manual AP29 ECO 27 5 EZ g Figure 21 Sniffer flow orifices em CC 28 Table 3 Keyto Figure 21 Refer to Figure 21 and change flow orifice as follows 1 Switch off system power 2 Shut off all gas and air supplies 3 Disconnect sensor cable from H65 Sensor if changing Analyzing flow orifice 4 If possible place the sample probe on a table with sensor connector facing upwards 5 Remove H65 Sensor or brass plug 1 and o ring 2 6 Turn probe around and let the parts 3 4 5 6 7 and 8 fall into your hand Go to step 10 or remove the parts as described in steps 7 to 9 7 Remove spacer
15. etc for easy interfacing to any PLC system The AP29 ECO is designed for minimum maintenance and easiest possible service Hydrogen Gas Hydrogen as a tracer gas for leak detection When pure hydrogen gas is released in air its flammability region spans from 4 to 75 of hydrogen in air Below 4 there is not enough chemical energy available for a flame to occur Above 75 hydrogen there is not enough oxygen left to support a flame When for example a mixture of less than 5 7 hydrogen in nitrogen mixes with air there will never be enough energy to support a flame irrespective of the ratio of air to gas When a mixture of more than 5 7 hydrogen in nitrogen is released into air there is a region of ratios between air to gas where the mixture is flammable When for example a mixture of 10 hydrogen in nitrogen mixes with air there is still very little energy available Only in very special circumstances can a flame be self supporting Such mixtures cannot detonate Warning Never use a mixture containing more than 5 hydrogen or make your own mixtures Otherwise an explosion can occur which can result in serious injury INFICON Maintenance Manual AP29 ECO 3 2 3 Main Parts The AP29 ECO has five main parts e main valve block e Sensor e solenoid valves e flow alarm switch e two pumps See Figure 1 Figure 1 Main parts Flow alarm switch Solenoid valve Main valve block Table 1 Key to Figure lI 4 INFICON
16. ing the Valves Refer to Figure 23 and replace the defective valve YO1 Y02 Y03 Y04 or YO5 as follows p dde SS Du des Switch off system power Shut off all gas and air supplies Remove cover of instrument box Disconnect contacts from valve Remove the two screws Carefully note the orientation of the valve It is possible to rotate the valve 180 Remove the valve and clean the surface of the valve manifold Turn valve over and check that o ring seal is correctly in place Install the valve and tighten both screws Make sure that the orientation of the valve is correct Connect contacts INFICON Maintenance Manual AP29 ECO 33 6 Illustrated Parts Breakdown Figure 24 External filter 34 INFICON Maintenance Manual AP29 ECO Figure 25 Front view and top view INFICON Maintenance Manual AP29 ECO 35 Figure 26 Illustrated parts 36 INFICON Maintenance Manual AP29 ECO Figure 27 Illustrated parts 2 3 INFICON Maintenance Manual AP29 ECO Box Nut ETC Filter holder 38 INFICON Maintenance Manual AP29 ECO Cable 60 cm Table 4 Key to Figure 24 25 26 and 27 INFICON Maintenance Manual AP29 ECO 39 p Spare Parts Name Part Picture Position number number in Figure 26 Filter disc 10um O ring 4x2 591 176 O ring 5 1x1 6 591 177 I coupling 8 R1 8 591 268 40 INFICON Maintenance Manual AP29 ECO N O ring 8x1 591
17. port of the new switch 10 Put the new switch in place with the vacuum port entering the centre hole Make sure the o ring is in place See Figure 23 for correct orientation of the switch 11 Install the two screws and tighten them 12 Connect the red cables Note Adjusting a new flow switch can be a bit difficult The setting will change slightly during the first hour or so after the first adjustment After adjusting the switch it is recommended that you wait for one hour and then check the setting again 13 Adjust the flow switch according to instructions under Adjusting Flow Alarm Switches above Replacing Sample or Purging Pump Refer to Figure 23 and replace the pump MO1 or M02 as follows 1 Switch off system power 2 Shut off all gas and air supplies 3 Remove cover of AP29 ECO INFICON Maintenance Manual AP29 ECO 31 4 Remove silicone hoses from the old pump 5 Disconnect power supply to the pump Make sure you remember the position of the cables Remove the screws that hold the pump from the below of the instrument box 6 7 Install the new pump and gently tighten the two screws 8 Reconnect the power cables Make sure you connect the cables to correct position 9 Install new silicon hoses Cut the hoses to same length as the original hoses 10 Install the cover 11 Do a function test 32 INFICON Maintenance Manual AP29 ECO 5 5 Replacing the Valves Figure 23 Replac
18. ties can be achieved for point testing applications by using the accumulation technique supported by the Sensistor ISH2000 software Consult your supplier for best system design for your particular application The AP29 ECO is equipped with two separate sniffer flow channels Sampling and Analysing flow This configuration makes it possible to perform true steady state measurements The constant sniffer flows are created by a pump pulling air through two high precision ruby orifices A critical flow type situation is obtained The orifices are protected by built in filters see Figure 21 position 5 in Chapter 5 The flow is supervised by two differential flow alarm switches activated by the pressure drop across the orifices The switches are factory set to open at 75 of the nominal sniffer flow The AP29 ECO is equipped with an overexposure protection mode purging the sensor with reference air as soon as the signal goes above the rejection threshold This reduces the recovery time of the sensor enabling the system to work with high speed testing applications The unit is also equipped with a reference mode This allows for fast and automatic calibration adjustment with a certified gas mixture of Hydrogen in Air An optional software driver can be ordered if calibration with reference leak is preferred See further in calibration section below The Sensistor ISH2000 system offers 24 VDC logic signals for valve control leak alarms sniffer flow alarm
19. tion Flow Alarm Switch APC Settings APC Time A Set Analysing 60 0 s Figure 17 Set Analysing Apply following settings in the Sensistor ISH2000 see Figure 17 APC settings Time A260 Bz0 C20 D 0 Calibration factor C210 K 1 old program version Calibration coefficient 210 INFICON Maintenance Manual AP29 ECO 21 22 Action e Press IN O to start a measurement the AP29 ECO will analyse the flow for 60 seconds Result Make sure that the analyse flow is 150 200 cc min according to the flowmeter If the flow is below 100 cc min the filters may be clogged or the sample pump does not work correctly To clean or replace the filter refer to Illustrated Parts Breakdown Figure 26 pos 14 Do a function check of the sample pump Action e Press IN O adjust the flow valve on the analyze flow meter to 75 of normal analysing flow Result Make sure that the pressure guard switches within 75 10 of normal analyze flow Sensistor ISH2000 indicates flashing red LED and the display shows Probe Error APC Settings APC Time B Set Sampling 60 0 s Figure 18 Set Sampling Apply following settings on the Sensistor ISH2000 see Figure 18 APC settings Time A20 B 60 C20 D 0 Calibration factor C210 K 1 old program version Calibration coefficient 210 INFICON Maintenance Manual AP29 ECO 4 2 Action e Press IN O adjust the flow valve in the sample flow meter to 75 of normal
20. ual AP29 ECO 29 30 AP29 Sample port Needle valve Leave flow meter inlet open Figure 22 Adjusting flow alarm switches Refer to Figure 22 and adjust flow alarm switches as follows L PA 10 11 INFICON Set up AP29 ECO and Sensistor ISH2000 for normal operation Start Sensistor ISH2000 in Service Mode Press and hold the right button while you switch power on Note current setting of APC timers Change timers as follows A 0 B gt 100s C 0 and D 0 Enter the service mode display a Enter the menu system and select Service Settings b On second level select Service Mode Connect the sampling hose to the flow meter and needle valve fully open See Figure 22 Remove cover of AP29 ECO box Locate the two digits that show the status of the flow alarm switches IN_2 Analyzing flow switch B01 IN 4 Sampling flow switch B02 See Figures 22 and 23 Make sure that both digits show 1 If not trim switch es carefully clockwise until digits show 1 Make sure that the flow meter shows no flow Start a test sequence Make sure that the flow meter now shows 150 250 atm cc s for 0 16 orifices 50 80 atm cc min for 0 1 mm orifices Close needle valve until flow meter shows 75 of previous reading If B01 digit shows 0 Adjust trim screw of switch B01 slowly clockwise until digit flips to 1 Adjust trim screw of switch B01 slowly counter clockwise until digit flips to 0
21. ust leak level 5x10E0 5ppm see Figure 20 Make a measurement on 10 ppm calibration gas Note Do not exceed atmospheric pressure Result Leak reject High after measurement Connect 5 Hydrogen to sample inlet Note Do not exceed atmospheric pressure Action gt Make a measurement Result The measurement should be aborted and purging should start Make sure that the display shows Leak Note For further information refer to the Sensistor ISH2000 Manual Tightness Control Connect the Sample Inlet to fresh air Action e Blow a cloud of 5 Hydrogen in through the ventilation grid on the side of the AP29 ECO box Wait 5 seconds Result Sensistor ISH2000 shows less than 5 ppm INFICON Maintenance Manual AP29 ECO 25 Action e To start a measurement press IN O on the BTB Result Sensistor ISH2000 shows less than 5 ppm Action e Press IN 3 and hold for 5 seconds Result Sensistor ISH2000 shows less than 5 ppm 26 INFICON Maintenance Manual AP29 ECO 5 1 Maintenance and Service Do the following actions regardless of the service done Carefully examine the external filter for dust oil or other things that can interfere with the performance of the unit Changing Sniffer Flow Orifices The by pass and sample flows are regulated by ruby disk orifices Standard orifices are 0 16 mm diameter giving a flow of typically 3 atm cc s The flow can be chang
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