User Manual

ManualsBrandsFieldpiece ManualsCarbon Monoxide DetectorsFieldpiece SCM4 Carbon Monoxide Detector, 1-Pack

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CO Detectors

& Cracked Heat

Exchangers

A CO detector can't tell you if a heat

exchanger is good. A CO detector can

indicate that a heat exchanger may

be cracked only if all of the following

conditions occur simultaneously:

1. The ﬂame must generate high

concentrations of CO (lack of oxygen,

excess fuel, high temp).

2. Enough exhaust gases must be

emitted from the heat exchanger

crack.

3. The exhaust gases from the crack

must not be diluted too much before

coming in contact with the sensor. A

cracked heat exchanger may leak CO

in a small stream. You may measure

high concentrations at one point

but low concentrations only an inch

away.

4. The heat exchanger must be

the only possible source for the CO

detected.

Maintenance

Clean the exterior with a dry cloth.

Do not use liquid.

Battery Replacement

When the meter displays the

battery should be replaced. Turn your

SCM4 oﬀ and replace the 9V battery.

Check Your Sensor:

Coﬀee Cup CO Test

To demonstrate that your CO

sensor works, turn a ceramic coﬀee

cup upside down and slide it over

the edge of a counter (or desk) to

expose about a third of the mouth

of the cup. Burn a cigarette lighter

inside the exposed mouth of the cup.

Don't burn the counter. When the

ﬂame starts to ﬂicker, you've burned

up most of the oxygen in the cup cre-

ating carbon dioxide and now you're

starting to produce carbon monox-

ide. Bring the ﬂame in and out of the

mouth of the coﬀee cup to just keep

the ﬂame alive. The longer you keep

the ﬂame ﬂickering, the more CO you

produce. After 10 seconds of ﬂicker-

ing, extinguish the ﬂame and put the

CO head in the mouth of the cup. You

should see readings in the 100s. Take

it out if it approaches 1000PPM.

CO Sensor Replacement

The SCM4 uses a carbon monox-

ide smart sensor. If you are seeing

erratic CO readings or no readings in

a known CO environment, you likely

need to replace the sensor.

1. Obtain replacement sensor model

RCM4 from your local distributor.

2. Remove sensor cap by removing the

4 screws.

3. Directly pull out old sensor.

4. Hold the new sensor by the sides.

While holding the sensor on the

sides; press down to secure the new

sensor. Do not press the new sensor

from the top.

5. If the sensor is incorrectly installed,

"CO Err" will be displayed and the

meter will automatically shut down

after 5 seconds.

Sensor Disposal

The RCM4 replacement carbon

monoxide smart sensor contains

sulfuric as well as precious metals.

The sensor should be recycled prop-

erly through a local electronic waste

center.

Limited Warranty

This meter is warranted against

defects in material or workmanship

for one year from date of purchase.

Fieldpiece will replace or repair the

defective unit, at its option, subject

to veriﬁcation of the defect.

This warranty does not apply to

defects resulting from abuse, neglect,

accident, unauthorized repair, altera-

tion, or unreasonable use of the

instrument.

Any implied warranties arising

from the sale of a Fieldpiece product,

including but not limited to implied

warranties of merchantability and

ﬁtness for a particular purpose, are

limited to the above. Fieldpiece shall

not be liable for loss of use of the

instrument or other incidental or

consequential damages, expenses,

or economic loss, or for any claim of

such damage, expenses, or economic

loss.

State laws vary. The above limita-

tions or exclusions may not apply to

you.

For Service

In the USA, call Fieldpiece Instru-

ments for one-price-fix-all out of

warranty service pricing. Send check

or money order for the amount

quoted. Send the meter freight pre-

paid to Fieldpiece Instruments. Send

proof of date and location of purchase

for in-warranty service. The meter will

be repaired or replaced, at the option

of Fieldpiece, and returned via least

cost transportation. Outside of the

USA, please visit www.ﬁeldpiece.com

for service contact information.

www.ﬁeldpiece.com