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III. TROUBLESHOOTING

A. Installation Check – Review each of the following points fi rst.

Sensor Installation:

Check the following points regarding the sensor installation.

a. Sensor enclosure cover must be securely fastened to protect against corrosion of the transmit-

ter board etc.

b. Sensor must be mounted at a height that is according to Figures 1a and 1b.

c. Sensor must be mounted so that (rain) water cannot come into contact with the sensor element.

Water coming into contact with the sensor element will damage the sensor and cause the need
for sensor replacement. Generally, water damage will cause the sensor to have an above zero
reading that will not return to zero.

d. Ensure that the sensor calibration cap has been removed completely. See Figure 2.

Monitor Installation:

Check the following points regarding monitor installation.

a. Monitor should be installed at eye level in a location that is suitable for personnel to check

the sensor status before entering the chemical storage room.

b. Monitor should be mounted in a location that is protected from rain and it is recommended

that it should not be mounted under direct sunlight.

c. Monitor enclosure bolts must be securely fastened and wiring seal tights must be plugged if

not used in order to protect against corrosion of the circuit boards etc.

d. Ensure that the alarm relay output and/or 4-20mA outputs are wired according to Section II.E

and Figures 5 and 6.

B. Symptoms, Likely Causes, and Suggested Responses

Symptoms

Likely Causes

Suggested Responses*

Slightly off zero in air

Inaccurate zero calibration

Perform zero calibration

Zero & no response with
Alarm Status: Normal

1. Calibration cap not removed
2. Wrong span calibration

1. Remove calibration cap
2. Correct span calibration

False alarm and no display
response with Alarm Status:
Error

1. Sensor disconnected
2. Sensor damaged

1. Check sensor wiring
2. Replace the sensor

High reading or reading that
won’t return to zero

Sensor damaged

Replace the sensor

Blank display

1. Lost A/C power
2. Damaged circuit board
3. Damaged power supply board

1. Check A/C Power
2. Replace circuit board
3. Replace power supply board

* See Section III.C for a more detailed explanation of the suggested responses.

Содержание GA-180

Страница 1: ... and Maintenance Manual GA 180 Rev 12 20 17 The information contained in this manual was current at the time of printing The most current versions of all Hydro Instruments manuals can be found on our website www hydroinstruments com ...

Страница 2: ...on of Responses 23 Figures 1a Sensor Installation heavy gases 3 1b Sensor Installation light gases 3 2 Remove Calibration Cap 4 3 Wiring Diagram inside of door 5 4 GA 180 Controller Electronics 6 5 Pinout Diagrams for MB108 and MB123 7 6 Pinout Diagrams for MB122 MB141 and MB101 8 7 Calibration Cap 12 8 Sensor and Calibration Kit 12 9 GA 180 Operating Screens 13 10 GA 180 Configuration Screens 14 ...

Страница 3: ...the enclosure for mounting the monitor against the wall FIGURE 1a FIGURE 1b B Sensor Installation Refer to Figures 1a and 1b for more information 1 Determine a suitable mounting location For monitoring gases heavier than air the sensor should be placed approximately 12 24 inches from the floor For gases lighter than air the sensor should be placed 12 24 inches from the ceiling Do not place sensor ...

Страница 4: ...fy the positive and negative leads on the battery Remove the plastic protectors on the battery leads and connect the positive lead of the battery to the BAT terminal on the battery backup board MB101 Connect the negative lead of the battery to the BAT terminal on the battery backup board MB101 4 Ensure that the appropriate 24 VDC from the power supply is connected to the appropriate PS and PS term...

Страница 5: ...ng Diagram inside of door 7R DFN 3ODWH URXQG XJ 7R 7HUPLQDO ORFN 1 JUHHQ 1 EODFN 1 87 ZKLWH 7R LUFXLW RDUG 9 EODFN 9 UHG RU 02 86 RPPXQLFDWLRQ 0 FLUFXLW ERDUG IRU GDWD ORJJLQJ RSWLRQDO 0LFUR6 FDUG VORW IRU GDWD ORJJHU ...

Страница 6: ...To 2 Sensors No Battery No Thermocouple 2 No No 1 1 1 Up To 4 Sensors No Battery No Thermocouple 4 No No 1 1 2 Up To 4 Sensors With Battery No Thermocouple 4 Yes No 1 1 2 1 Up To 4 Sensors No Battery With Thermocouple 4 No Yes 1 1 2 1 Up To 2 Sensors With Battery With Thermocouple 2 Yes Yes 1 1 1 1 1 M B 1 0 1 C B B A T B a t t e r y B o a r d M B 1 4 1 C B T H E R M T h e r m o c o u p l e B o a ...

Страница 7: ... Common 3 Normally Open 3 Normally Closed 2 Common 2 Normally Open 2 Normally Closed 1 Common 1 Normally Open 1 V V RELAY 8 RELAY 7 RELAY 6 RELAY 5 RELAY 4 RELAY 3 RELAY 2 RELAY 1 MB108 CB 8RELAY EIGHT RELAY BOARD Normally Closed 2 Common 2 Normally Open 2 Normally Closed 1 Common 1 Normally Open 1 Digital Input 1 Remote Acknowledge RELAY 34 RELAY 33 MB123 CB 2RELAY TWO RELAY BOARD Digital Inputs ...

Страница 8: ...ally Closed 1 Common 1 Normally Open 1 Thermocouple Input To Power Supply To Battery HIGH TEMPERATURE ALARM Digital Inputs and 4 20mA outputs must also have appropriate V GND connection Relays shall be wired in either a normally open NO or normally closed NC arrangement Analog Output AO1 Analog Output AO2 Analog Input AI2 to Horn Analog Input AI1 SHIELD connect to metal back plate SHIELD connect t...

Страница 9: ...he gas sensors five minutes to stabilize without the program running to prevent unwanted tripping of alarms and relays Once the five minutes has expired the program will begin The key can also be pressed to bypass the countdown and begin the program 2 Home Screens These screens display the gas type and current residual level of each active channel If one or both channels are activated on a particu...

Страница 10: ...lect the relevant channel Once the relevant channel is blinking press to enter the sensor channel settings All screens will be identical regardless of the channel selected Settings will be adjusted and saved to each independent channel 2 Channel Low and High Set In the rising alarm configuration in which the low set is less than the high set the channel low set is the point above which the Danger ...

Страница 11: ... match the full scale of the sensor output connected to the channel Should the two outputs be misaligned improper operation will result Standard full scales for sensors supplied by Hydro Instruments can be seen in Table 1 If unsure about the full scale output of a sensor please contact Hydro Instruments TABLE 2 Standard Ranges For Hydro Instruments Gas Sensors Gas Type Sensor Range Chlorine Cl2 0 ...

Страница 12: ...nal disturbances from the sensor The filter time can be set anywhere from 0 60 seconds using the and keys The recommended factory default value is 5 seconds 12 Calibration Diagnostic Screen This screen allows the user to view the most recent calibration points and their corresponding A D values for diagnostic purposes 13 Live diagnostic Screen This screen allows the user to see the current sensor ...

Страница 13: ...Relays 01 Status Error 02 Status Error 15 Status Error 16 Status Error 03 Status Error 04 Status Error If Auto Screen Chg is ON screens shown with will cycle every X seconds where X is defined by Cycle Time These screens will only appear if the relevant sensor temperature and or communication settings have been enabled Enter Password 180 Comm Status Normal Normal Node Error ...

Страница 14: ... H 2 H 2 S OFF NH 3 O 2 O 3 SO 2 ppm Ch1 Ch2 Ch15 Ch16 Enter Password 180 HOLD F C Screens shown with grey border are hidden screens accessed by holding at the Alarm Delay screen On Off Temp Units F Alm Delay 5s Temp Alm Low 40F Alm High 120F Temp Alm Low 40F Alm High 120F Setup Sensor Temp Display DL Data Log On Data Log Frequency 60 secs Set Time and Date No Yes Set Time and Date No Yes Change T...

Страница 15: ...h Alarm 5 9 Ch5 Low Alarm 10 Ch5 High Alarm 6 11 Ch6 Low Alarm 12 Ch6 High Alarm 7 13 Ch7 Low Alarm 14 Ch7 High Alarm 8 15 Ch8 Low Alarm 16 Ch8 High Alarm 9 17 Ch9 Low Alarm 18 Ch9 High Alarm 10 19 Ch10 Low Alarm 20 Ch10 High Alarm 11 21 Ch11 Low Alarm 22 Ch11 High Alarm 12 23 Ch12 Low Alarm 24 Ch12 High Alarm 13 25 Ch13 Low Alarm 26 Ch13 High Alarm 14 27 Ch14 Low Alarm 28 Ch14 High Alarm 15 29 Ch...

Страница 16: ...ers Contact your chemical supplier to confirm the temperature for the fusible plug melting point Other equipment or local restrictions may apply Each value is adjusted using the and keys 8 Press and select the alarm delay time This setting sets the amount of time the temperature must remain above the high temp alarm setting or below the low temp alarm setting before the alarm will activate Values ...

Страница 17: ...st have battery backup Even Numbered Ch_ High alarm Any sensor low Any sensor high Any sensor signal loss Loss of AC Power must have battery backup Loss of Low Battery Power must have battery backup Relay Options Relay 33 34 Any Sensor High Any Sensor Low Any Sensor Signal Loss Loss of AC Power must have battery backup Loss of Low Battery Power must have battery backup TABLE 4 Relay Options for Se...

Страница 18: ...if the sensor reading is higher than the Danger or Alarm setting the GA 180 will activate the appropriate alarm s To configure a sensor rising falling alarm follow the steps outlined in Section II C b Falling If the Danger low level alarm is set to a higher value than the Alarm high level alarm then the GA 180 will automatically configure the channel as a falling alarm Therefore if the sensor read...

Страница 19: ...ture or room Single compact unit Wall mounting Rotating strobe light with red lens 90 dB Audible horn Weather resistant GA AL 110 110VAC GA AL 220 220VAC The external alarm light horn is an optional accessory for use with all Hydro Instruments gas leak detection equipment The alarm light connects to a relay inside the gas detector monitor This can be a sensor specific relay or a common relay PWR L...

Страница 20: ...gas in order to test the reaction of the sensor A plastic squeeze bottle is provided with each gas detector for this purpose Figure 13 It is suggested that bump testing be done at quarterly intervals however required frequency is determined by environment conditions number of and severity of leaks Proper bump testing will not substantially degrade the sensor or shorten sensor life Figure 13 diagra...

Страница 21: ...with a minimum setting of 5 seconds b Data Logger Clock The clock is factory set before shipment However because the clock is set on Eastern Standard time it may be necessary to change the date and time upon start up 3 Stored Data Files The data will be written to text files on the MicroSDHC memory card The formatting and handling of these files is as described below a File Format The following is...

Страница 22: ...or should be mounted in a location that is protected from rain and it is recommended that it should not be mounted under direct sunlight c Monitor enclosure bolts must be securely fastened and wiring seal tights must be plugged if not used in order to protect against corrosion of the circuit boards etc d Ensure that the alarm relay output and or 4 20mA outputs are wired according to Section II E a...

Страница 23: ...message then the sensor may not be connected to the monitor Check the wiring from the circuit board in the monitor to inside the sensor enclosure See Figures 5 and 6 5 Sensor Replacement Repeated or excessive exposure to the target gas and or cross sensitive gases will eventually cause failure of the sensor If water is allowed to contact the sensor element this will also eventually cause failure o...

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