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REMOTE INTELLIGENT SENSOR - AREA MONITOR
Instruction 2772-0803 Page iii
3.13 OPTIONAL FEATURES ......................................................................................................... 3-4
3.13.1 RELAY ALARM OPTION............................................................................................3-4
3.13.2 PRINTER INTERFACE OPTION .............................................................................. 3-4
3.13.3 TEST CARD .................................................................................................................. 3-4
3.14 PRINTER OPERATION & USE (OPTIONAL FEATURE) ................................................. 3-5
3.14.1 GENERAL..................................................................................................................... 3-5
3.14.2 PRINTER SPECIFICATION ...................................................................................... 3-5
3.14.3 PRINTOUT MODES .....................................................................................................3-6
3.14.3.1 Printing 'On Line' .................................................................................................3-6
3.14.3.2 Print at Intervals ..................................................................................................3-6
3.14.3.3 Print on Command................................................................................................ 3-6
3.14.3.4 Printed Date Format ............................................................................................ 3-7
3.14.3.5 Data Storage up to 7 Days ....................................................................................3-7
3.14.3.6 Preventing Data Loss ...........................................................................................3-7
3.14.4 PRINTER CARD DESCRIPTION ..............................................................................3-7
3.14.4.1 Real Time Clock .................................................................................................... 3-7
3.14.4.2 Data Storage.......................................................................................................... 3-7
3.14.4.3 Data Communication............................................................................................ 3-7
3.14.4.4 Selection of Printer Baud Rate ............................................................................ 3-7
3.14.5 CONNECTING A PRINTER .......................................................................................3-7
3.14.5.1 GMD Printer Connection .....................................................................................3-7
3.14.5.2 Connecting a Non-GMD Printer ..........................................................................3-8
3.14.5.3 Portable Use of a Non-GMD Printer ....................................................................3-8
4 MAINTENANCE AND TROUBLESHOOTING................................................................... 4-1
4.1 MAINTENANCE GENERAL.......................................................................................... 4-1
4.2 VERIFYING THAT A GAS ALARM WAS CAUSED BY GAS .................................... 4-1
4.3 CLEARING A SPURIOUS ALARM............................................................................... 4-1
4.4 ADJUST LIGHT LEVELS .............................................................................................. 4-1
4.5 CHECKING AND ADJUST SYSTEM FLOW RATE .................................................. 4-2
4.6 DISABLING THE ‘DOOR OPEN’ ALARM ................................................................... 4-2
4.7 ADJUST THE DOOR SWITCH ..................................................................................... 4-2
4.8 MEASURING PUMP CURRENT .................................................................................. 4-3
4.9 RESETTING THE PRINTER OPTION STORAGE .................................................... 4-3
4.10 CLEANING THE SAMPLING INPUT AND OPTICS BLOCK ................................. 4-3
4.10.1 INTRODUCTION............................................................................................. 4-3
4.10.2 LIGHT LEVEL ADJUSTMENT ..................................................................... 4-3
4.10.3 WHEN TO CLEAN .......................................................................................... 4-3
4.10.4 HOW TO CLEAN ............................................................................................. 4-4
4.10.5 DIRECT CLEANING OF THE LED’S AND PHOTO DIODES .................. 4-4
4.10.6 REPLACING THE OPTICS BLOCK ............................................................. 4-4
4.10.7 WHAT TO DO IF CLEANING DOES NOT RECTIFY THE PROBLEM .. 4-5
4.11 CHANGING A PUMP. .................................................................................................... 4-5
4.11.1 PREPARATION ................................................................................................ 4-6
4.11.2 REMOVAL OF THE MECHANICAL CHASSIS ........................................... 4-6
4.11.3 PUMP REMOVAL ............................................................................................ 4-6
4.14.4 FITTING THE NEW PUMP........................................................................... 4-6
4.14.5 REPLACING THE MECHANICAL CHASSIS AND
SETTING PUMP FLOW ................................................................................ 4-6
CONTENTS (continued)