Digital Micron Gauge
Cleaning & repair Instructions
for DV-22N, DV-40, & DV-40S
DV-40
DV-40S
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DIGITAL MICRON GAUGE CLEANING & REPAIRS
JB INDUSTRIES
If your micron gauge is acting erratic, for instance, vacuum readings at atmosphere, readings rising
and falling during a steady pull down or holding vacuum, cleaning the sensor may be necessary.
Cleaning the sensor
Tools
Rubbing alcohol*
Step 1
Liberally pour rubbing
alcohol into the sensor.
Step 4
Dump excess alcohol.
After following steps 1-6 if you’re still experiencing issues, an alternate method to clean
the sensor is to soak the sensor in alcohol overnight.
Step 2
Cover tting opening
with your thumb or
nger.
Step 5
Repeat steps 1-4 at least
twice.
Step 3
Agitate the rubbing
alcohol in the sensor
to clean by shaking for a few
seconds.
Step 6
Allow to air dry or pull
vacuum on gauge to
expedite drying.
Use Isopropyl (Isopropanol) alcohol only. Do NOT use Denatured alcohol as it leaves
residue after evaporation. Do not use other solvents as they may be too corrosive
and permanently damage the sensor and or its surroundings. Isopropyl of 90% pure
or better should be used. Hardware stores will sell 99% pure, found near the paint
thinners & solvents.
2
TM
DIGITAL MICRON GAUGE CLEANING & REPAIRS
JB INDUSTRIES
If you have trouble getting an accurate reading after cleaning the sensor, please check your o-ring for
damage, wear, or to see if it is missing.
Replacing the O-Ring
Tools
O-ring probe or thin implement & P90009 Replacement O-ring.
Step 1
Using probe get under
the rubber O-ring.
Step 3
Place O-ring in the grove.
Step 2
Remove O-ring.
Step 4
Press O-ring to securely
seat it in the groove.
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Aurora IL 60505 USA
©2016 JB Industries, Inc.
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