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WA-5A

Service Manual

Document No.

NIC-704-2013-01

Date of Issue

Mar. 9, 2015

Management Dept. Technical Center

Page

1/

WA-5A

Service Manual

Nippon Instruments Corporation

Technical Center

Date

Written By

Checked By

Approved By

1st edition

Mar. 9, 2015

Inoue

Daito

Noda

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Содержание WA-5A

Страница 1: ...No NIC 704 2013 01 Date of Issue Mar 9 2015 Management Dept Technical Center Page 1 WA 5A Service Manual Nippon Instruments Corporation Technical Center Date Written By Checked By Approved By 1st edit...

Страница 2: ...History Ver Revision Date Reason for Revision Written By Approved By 01 Mar 9 2015 First edition issued Inoue Noda Distribution List Distributed To Distribution Date Distributed To Distribution Date D...

Страница 3: ...ings and explanations of symbols 11 2 2 Cautions concerning installation 11 2 3 Cautions concerning maintenance 11 3 MAINTENANCE 12 3 1 Inspection items 12 3 1 1 Daily inspection 12 3 1 2 Yearly inspe...

Страница 4: ...6 4 1 Collector tube adapter 26 4 2 Heater H1 26 4 3 Heater H2 28 4 4 Gas washing bottle and dehumidifying bottle 28 4 5 Cell 28 4 6 Optical system unit 29 4 7 Mercury lamp 30 4 8 Phototube preamplifi...

Страница 5: ...a dedicated mercury collector tube in easy operations with high sensitivity over a wide range A personal computer is used for operations and the processing of measurement results and it is possible to...

Страница 6: ...ing furnace H1 With built in air cooling fan 3 Collector tube fixing port Made of fluoroplastic 4 Electronic cooler unit 5 Gas washing bottle Removes acid gas At time of atmosphere measurement pH 6 86...

Страница 7: ...A or 250 V 5 A 5 AC OUT Power port for sample changer Interlocked with main switch 6 Personal computer connection port Connected using LAN cable 7 Serial connection port Not used 8 Dry gas meter conne...

Страница 8: ...1 3 3 Inside of top cover No Name Remark 1 Optical system unit 2 Absorption cell 200 mm For low range measurement 3 Absorption cell 1 mm For high range measurement 4 Low pressure mercury lamp 1 2 3 4...

Страница 9: ...2 bypass at time of H1 direct sampling such as that for LPG 5 Air pump 6 Flow adjustment needle Adjust to 0 5 L min 7 Flow sensor For flow measurement 8 Activated carbon for carrier gas For carrier ga...

Страница 10: ...or optical system 5 Power supply board for electronic cooling 6 Power supply board for main board 1 4 Readers for whom this service manual is intended This manual is for technicians who have received...

Страница 11: ...power cord and plug and make sure whether there is any damage or not 2 3 Cautions concerning maintenance Cut off the power supply before starting maintenance work or you may get an electric shock Tur...

Страница 12: ...countdown Checking at time of measurement Item Standard Measures against abnormality Blank value When purge measurements are made repeatedly the HEIGHT value on the LOW side shall be 0 0002 or less C...

Страница 13: ...cleaning or pump replacement Detector output Ref Shall be 4 0 5 V on the maintenance screen of WA5Win Wiping of dirt on lamp lens etc Adjustment of optical system Detector output Sig1 Sig2 Shall be 4...

Страница 14: ...2 LAMP BROKEN The light quantity of the lamp REF voltage decreases below the preset value Issued if the REF voltage is 0 5 V or less Possible causes are the deterioration of the lamp and an abnormalit...

Страница 15: ...10 HEATER BROKEN H2 The temperature of H2 does not rise Issued if the temperature of the H2 is not 400 C or more at the end of a measurement If the error reoccurs after the instrument is turned off an...

Страница 16: ...t us 15 TC WA NO SAMPLE The measured collector tube does not move down Issued if the measured collector tube does not descend Turn off the power open the front cover and check the inside If the error...

Страница 17: ...n the cover and retighten the Teflon joint Dirty or deteriorated piping Dirty collector tube scrubbing liquid joint By injecting standard gas into various parts of the piping route the faulty part can...

Страница 18: ...n for a filter or a mercury collector tube to various parts of the piping route using Tygon tubes or the like and make measurements When standard gas is collected a mercury grain may adhere to the syr...

Страница 19: ...roximately zero When the flow rate does not decrease there is a leak because of the deterioration of the septum a loosened joint or the like After the checking of a leak shift the plugging finger slow...

Страница 20: ...bottle and dehumidifying bottle 1 Open the front cover 2 Remove the collector tube and the screws fixing the collector tube connection port 3 Remove the transparent board of the electronic cooler 4 R...

Страница 21: ...llector tube H2 Remove the cover of the instrument Remove the reducing Teflon joint FLW 30 6RU4 S and pull the collector tube out of the H2 To attach the joint tighten it lightly by hand and then reti...

Страница 22: ...s 1 Cell window retainer 2 O ring P9 3 Cell window 4 Cell window holder 5 O ring P10 6 Washer 7 Cap nut To remove the cell window retainer use a coin If it is impossible to remove the cell window clea...

Страница 23: ...e without the collection agent and the joint in a plastic beaker or a glass beaker Pour neutral detergent and clean the components using an ultrasonic cleaner or by keeping them in the detergent for 3...

Страница 24: ...odium calcium or the like adheres to them When the temperature in the electric furnace has lowered and it is possible to take out the quartz tubes take them out using a flat trowel tongs or the like w...

Страница 25: ...The Optical Adjust screen starts and it is possible to make the gain adjustments for SIG1 SIG2 and REF Adjust ZERO to 0 V and SPAN to 4 V When AUTO is clicked a span adjustment and a zero adjustment f...

Страница 26: ...ried out smoothly 4 1 Collector tube adapter 1 Remove the collector tube and the reducing elbows of the gas washing bottle and dehumidifying bottle 2 Remove the screws of the retainer fixing the colle...

Страница 27: ...crews to remove the lid 3 Loosen the four screws fixing the glass tube reflector and pipe holder Then loosen the two screws fixing the thermocouple and the two nuts fixing the heater 4 Remove the refl...

Страница 28: ...ple make sure that its end touches the heater 4 4 Gas washing bottle and dehumidifying bottle For the removal and fixing procedures for the gas washing bottle and dehumidifying bottle refer to 3 4 3 C...

Страница 29: ...tion board and the main board and the connectors of the constant temperature cap and mercury lamp from the power supply board for the optical system 2 Remove the Teflon joints on the 1 mm cell side an...

Страница 30: ...cal system box and remove the lamp unit cover assembly 2 Disconnect the connectors of the constant temperature cap and mercury lamp from the power supply board for the optical system 3 Loosen the two...

Страница 31: ...amp to the constant temperature cap 5 When replacing the lamp fix a new lamp such that its front is aligned with the direction of the hole in the constant temperature cap 6 After the replacement is co...

Страница 32: ...crews fixing the preamplifier board and replace it 2 After the replacement is completed readjust the optical system 4 9 Second collector tube For the removal and fixing procedures for the second colle...

Страница 33: ...tching of sampling route and detection route 2 Valve V2 Switching of detection route and bypass route 3 Valve VA H2 bypass at time of H1 direct sampling such as that for LPG 4 Valve EV Switching for o...

Страница 34: ...out the connector attached to the flow sensor Then loosen the two screws and remove the flow sensor 4 12 Air pump Loosen the three M3 10 hexagon socket head cap screws of the pump plate fixing the air...

Страница 35: ...tor s connected to each control board loosen the screw s fixing the board and remove it No Name Remark 1 Main board 2 Power supply board for main board 3 Power supply board for optical system 4 Power...

Страница 36: ...main board and the connectors of the constant temperature cap and mercury lamp from the power supply board for the optical system 2 Remove the Teflon joints on the 1 mm cell side and 200 mm cell side...

Страница 37: ...d to the switching power supply to be replaced 6 Lay the main unit on its side insert a screwdriver through the slits in the baseplate loosen the screws and take out the switching power supply Attach...

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