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  5. Combined Service Manual

Bacharach Monoxor II Combined Service Manual

Manual is about: HCAC & Refrigeration

Summary of Monoxor II

  • Page 1

    Instruction 0019-9166 combined service manual for: dioxor ® ii monoxor ® ii monoxor ® ii h (high range) nonoxor ® ii rev. 7 – may 2010 bacharach, inc. 621 hunt valley circle, new kensington, pa 15068 phone: 1-800-736-4666 • fax: 724-334-5001 • web: www.Mybacharach.Com printed in the u,s.A..

  • Page 2

    ® bacharach, dioxor, monoxor, and nonoxor are registered trademarks of bacharach, inc. Copyright © bacharach 1997-2010, all rights reserved. A.

  • Page 3

    Table of contents 1.0 service manual contents.................................................................4 2.0 maintenance ............................................................................................5 2.1 opening the case.............................................................

  • Page 4

    Single gas instrument service manual page 4 bacharach, inc. Instruction 0019-9166 1.0 service manual contents this manual contains the following service information for the . . . Dioxor ii (part no. 0019-7038 & 0019-7043) monoxor ii (part no. 0019-7034 & 0019-7039) monoxor ii h (part no. 0019-8015) ...

  • Page 5

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 5 2.0 maintenance 2.1 opening the case figure 2-1. Opening and closing the case equipment needed: • phillips-head screwdriver, no. 1 procedure: 1. Lay the instrument face down on a workbench; then detach the metal clip f...

  • Page 6

    Single gas instrument service manual page 6 bacharach, inc. Instruction 0019-9166 2.2 closing the case figure 2-2. P.C.B. And chamber assem- bly removal and installation equipment needed: • phillips-head screwdriver, no. 1 procedure: caution when replacing the p.C.B. And chamber assembly, the p.C.B....

  • Page 7

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 7 2.3 cleaning the inside of the chamber assembly is the only part of the instrument that needs to be cleaned. To clean the chamber assembly, proceed as follows: equipment needed: • screwdriver, no. 1 phillips head • cle...

  • Page 8

    Single gas instrument service manual page 8 bacharach, inc. Instruction 0019-9166 figure 2-3. Chamber as- sembly, exploded view figure 2-3a. Fan-blade assem- bly set screw a. If disassembled, push the fan assembly onto the motor shaft until it seats (fig 2-3). Be sure the set screw (fig 2-3a) is not...

  • Page 9

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 9 2.4 sensor replacement when the instrument can no longer be spanned, as described in section “3.0 sen- sor calibration,” the sensor has reached the end of its useful life, and should be replaced. The life of a sensor i...

  • Page 10

    Single gas instrument service manual page 10 bacharach, inc. Instruction 0019-9166 2.5 printed circuit board (p.C.B.) replacement figure 2-4. Sensor & motor wiring diagram equipment needed (refer to section “5.0 replacement parts” for part nos.): • phillips-head screwdriver, no. 1 • printed circuit ...

  • Page 11

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 11 2.6 chamber assembly servicing to disassemble the chamber assembly, proceed as follows: equipment needed (refer to section “5.0 replacement parts” for part nos.): • screwdriver, phillips head, no. 1 • screwdriver, 1/8...

  • Page 12

    Single gas instrument service manual page 12 bacharach, inc. Instruction 0019-9166 3.0 sensor calibration 3.1 monoxor ii co calibration figure 3-1. Calibration kit setup the following calibrates the monoxor ii to a known concentration of carbon monoxide. Equipment needed (refer to section “5.0 repla...

  • Page 13

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 13 3. Connect the co discharge hose of the calibration equipment to the monoxor's probe tip; then open the co cylinder regulator valve and adjust the regulator for a fl owmeter indication of 1 to 2 scfh. 4. Allow gas to ...

  • Page 14

    Single gas instrument service manual page 14 bacharach, inc. Instruction 0019-9166 4.0 troubleshooting chart symptom cause remedy batteries dead batteries installed backwards p.C.B. Defective backlight or its switch is defec- tive sensor connections loose or broken sensor membrane blocked with water...

  • Page 15

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 15 symptom cause remedy erratic display unit won't zero and/or span low batteries faulty motor sensor connections loose or broken sensor depleted or defective p.C.B. Defective too much gas present to zero probe kinked or...

  • Page 16

    Single gas instrument service manual page 16 bacharach, inc. Instruction 0019-9166 symptom cause remedy sensor connections loose motor has excessive arcing in its carbon brush/commutator interface causing rfi chamber assembly screws loose fan-blade assembly loose inlet and/or outlet port(s) blocked ...

  • Page 17

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 17 5.0 replacement parts replacement parts for the instrument are listed below. Please refer to the ap- propriate fi gure(s) for part locations. Item description part no. 1 probe assembly, standard 0019-3076 -- probe ass...

  • Page 18

    Single gas instrument service manual page 18 bacharach, inc. Instruction 0019-9166 5.2 instrument assembly (figs 5-2 & 5-3) figure 5-2. Replacement parts, chamber assem- bly exploded view item description part no. 1 adapter, motor shaft 0024-0412 2 battery clip, push on 0004-3113 3 battery cover wit...

  • Page 19

    Single gas instrument service manual instruction 0019-9166 bacharach, inc. Page 19 figure 5-3. Replacement parts, back and front exploded views.

  • Page 20

    Description part no. Calibration kit 0024-7059 carbon monoxide gas cylinder, 500 ppm 0024-0492 potentiometer adjustment tool 0006-9456 custom carrying case (1 instrument) 0019-0377 custom carrying case (2 instrument) 0019-3040 instruction manual, (dioxor ii) 0019-9121 instruction manual, (monoxor ii...