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Control boards

Disconnect the connectors which connect each control board. Then remove the screws fixing

the boards and remove the boards.

No.

Item

Remarks

Main circuit board

Power board for main circuit board

Power board for optical system

Power board for electronic cooling

unit



Содержание WA-5F

Страница 1: ...NIC 704 2015 01 Date of Issue Apr 14 2017 Control Department Technical Center Page 1 36 1 WA 5F Service Manual Nippon Instruments Corporation Technical Center Date Prepared Checked Approved First Edit...

Страница 2: ...nical Center Page 2 36 2 Revision History Revision No Revision Date Reason for Changes Prepared Approved 01 Apr 14 2017 First Edition issued Kinoshita Kato Distribution List Destination Date Destinati...

Страница 3: ...ctions 10 Meaning of safety alert symbols 10 Cautions on installation 10 Cautions on maintenance 10 3 Maintenance 11 Inspection items 11 Daily inspection 11 Annual inspection 12 Errors and warnings 13...

Страница 4: ...Heater H1 24 Heater H2 26 Gas scrubbing bottle and dehumidifying bottle 26 Cell 26 Adjusting the sensitivity of the optical system 27 Mercury lamp 29 Photoelectric tube preamplifier 31 Second collect...

Страница 5: ...dicated mercury collector tube to be quickly measured with high sensitivity and in a wide range through simple operations The operations are carried out on a PC where the measurement results can be an...

Страница 6: ...g fan Mounting port for collector tube Made of fluoride resin Electronic cooling unit Gas scrubbing bottle Removes any acidic gas For measuring the mercury in the ambient air the standard buffer solut...

Страница 7: ...AC Fuse 100V 10A or 250V 5A AC OUT Power outlet for Auto Tube Changer Linked with the main switch LAN port for PC connection Port for a LAN cable Serial port Not used Connection port for dry gas meter...

Страница 8: ...ween the detection bypass lines Valve VF Prevents backflow Air pump Flow control needle valve Adjusted to 0 5 L min Flow sensor For measuring the flow rate Active carbon for carrier gas For purging ca...

Страница 9: ...l system Power board for electronic cooling unit Power board for main circuit board MFC control board Intended readers of this Service Manual The intended readers of this manual are engineers who have...

Страница 10: ...ck and fire be sure to check the power cables and plugs for any damage Cautions on maintenance Warning Shut off the power supply before starting the maintenance work Otherwise you may suffer an electr...

Страница 11: ...the screen Inspection during measurement Items Criteria Corrective action Blank value After the purge measurement has been repeated the HEIGHT value on LOW side must be 0 0002 or less Repeat the blank...

Страница 12: ...ding 0 02 L min Clean the needle valve or replace the pump Output voltage of detector Ref Must be 4 0 5V on the Maintenance screen of WA5Win Wipe any dirt and stains off the lamp lens etc Active carbo...

Страница 13: ...in the sensitivity of the photoelectric tube or a fault in the circuit 02 LAMP BROKEN The light quantity of the lamp REF voltage has dropped below its lower limit Generated if the REF voltage is 0 5V...

Страница 14: ...tion of the measurement Turn off the power and then restart the system If the error still persists contact us 20 FLOW ERROR The flow rate is too low Generated if the flow rate drops below 0 2 L min du...

Страница 15: ...f the problem cannot be corrected contact us 15 TC WA NO SAMPLE The measured collector tube does not move down Generated if the measured collector tube does not move down Turn off the power open the f...

Страница 16: ...oblem inside the system Open the cover and retighten the Teflon joint Contamination degradation of the line Contamination of the collector tube scrubbing solution or joints Contaminated degraded point...

Страница 17: ...lter or a mercury collector tube at an intermediate point in the line and measure the amount When you take a sample of the standard gas mercury particles may adhere to the syringe needle and contamina...

Страница 18: ...is a leak from the degradation of the septum a loose joint etc Caution After the completion of the leak check slowly slide your finger off the top of the collector tube If you burst it open the collec...

Страница 19: ...bottle Open the front cover Detach the collector tube and remove the screws fixing the connecting port of the collector tube Remove the transparent plate of the electronic cooling unit Remove the funn...

Страница 20: ...etaching and attaching the collector tube H2 Remove the cover of the system Remove the reducing Teflon joints FLW 30 6RU4 S and pull out the collector tube from H2 When attaching the joints first tigh...

Страница 21: ...ws with a screwdriver Remove the fluorescence cell and conduct maintenance Wipe the inner surface with a cotton swab dipped in alcohol Wipe the outer surface with Kimwipes or other material Then check...

Страница 22: ...llecting tubes and put the collection tubes and joints in a plastic or glass beaker Add neutral detergent into the beaker Then wash the parts in an ultrasonic cleaning machine or leave to stand for ab...

Страница 23: ...ubstances such as sodium or calcium adhere to the quartz tubes at that time the tubes may become brittle because of devitrification When the electric furnace has cooled enough to take out the items we...

Страница 24: ...t Collector tube adaptor 1 Detach the collector tube Then remove the reducing elbows of the gas scrubbing bottle and dehumidifying bottle 2 Remove the screws of the bracket which holds the collector t...

Страница 25: ...parts Remove the 2 screws and then the cover 3 Remove the 4 screws fixing the glass tube reflector and tube holder Then remove the 2 screws fixing the thermocouple and the 2 nuts fixing the heater 4 D...

Страница 26: ...you fix the thermocouple in place ensure that its tip is in contact with the heater Gas scrubbing bottle and dehumidifying bottle For how to detach and attach the gas scrubbing bottle and dehumidifyi...

Страница 27: ...duct overhaul work cleaning or replacing the primary side line of the optical system in advance 1 After one hour has passed since the system is turned on open the Maintenance screen Then select Parame...

Страница 28: ...o check the slope of the calibration curve PEAK analysis in LOW mode If the slope of the calibration curve is outside the allowable range of 6E 00 8E 00 change or enter a D P value of between 20 and 1...

Страница 29: ...he optical box and remove the lamp cover assembly 2 Disconnect the connectors at the power board for the optical system for the thermostatic cap and mercury lamp 3 Remove the 2 screws fixing the therm...

Страница 30: ...static cap 5 When replacing the lamp align the front of the lamp with the hole of the thermostatic cap and attach the lamp 6 After the replacement adjust the sensitivity of the optical system Refer to...

Страница 31: ...ve the 2 screws fixing the preamplifier board and replace the board 2 After the replacement adjust the sensitivity of the optical system Refer to 4 6 Adjusting the sensitivity of the optical system Se...

Страница 32: ...ve V1 Switches between the sampling detection lines Re collecting furnace H2 Comes with a built in cooling fan Valve V2 Switches between the detection bypass lines Valve VF Prevents backflow Air pump...

Страница 33: ...33 Flow sensor Disconnect the connector from the flow sensor Then remove the 2 screws and the sensor Air pump Remove the 3 hexagon socket head bolts M3 x 10 fixing the air pump from the pump plate...

Страница 34: ...hich connect each control board Then remove the screws fixing the boards and remove the boards No Item Remarks Main circuit board Power board for main circuit board Power board for optical system Powe...

Страница 35: ...and the main circuit board and disconnect the connectors at the power board for the optical system for the thermostatic cap and mercury lamp 2 Remove the Teflon joint of the cell 3 Remove the 10 scre...

Страница 36: ...ing to the switching power supply to be replaced 6 Place the main unit on its side Then insert a screwdriver through the slits of the base plate on the back and remove the screws and the switching pow...

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