Bacharach Monoxor II Service Manual download pdf (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 blocked pre-

venting gas ﬂ ow

Sensor connections loose or

broken

Sensor depleted or defective

P.C.B. defective

Replace batteries with four

fresh “C” Alkaline cells.

Break in a new Motor for at

30 minutes.

Replace Motor Assembly.

Refer to Section “2.6 Chamber

Assembly Servicing.”

Check Sensor connections.

See Fig 2-2.

Replace Sensor. Refer to

Section “2.4 Sensor Replace-

ment.”

Replace P.C.B. Refer to

Section “2.5 Printed Circuit

Board Replacement.”

Move unit into an area

known to be gas free.

Unkink or Replace Probe.

Check Sensor connections.

See Fig 2-2.

Replace Sensor. Refer to

Section “2.4 Sensor Replace-

ment.”

Replace P.C.B. Refer to

Section “2.5 Printed Circuit

Board Replacement.”

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