JB INDUSTRIES DV-40S Setup guide

CLEANING THE SENSOR
If your vacuum gauge is behaving erratically, cleaning the sensor may be necessary.
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 and solvents.
Follow steps 1-6 below. If issues continue, an alternate method of cleaning the sensor is to soak the sensor in alcohol overnight. If you have trouble getting an accurate
reading after cleaning the sensor, please check your gasket or o-ring for damage, wear, or to see if it is missing.
Tools Required
Rubbing Alcohol (Isopropyl)
Step 1
Liberally pour rubbing
alcohol into the sensor.
Step 2
Cover fitting opening
with your thumb or
finger.
Step 3
Agitate the rubbing
alcohol in the sensor
to clean by shaking for
a few seconds.
Step 4
Dump excess alcohol.
Step 5
Repeat steps 1-4 at
least twice.
Step 6
Allow to air dry or pull
vacuum on gauge to
expedite drying.
SH-35NDV-40S DV-41 DV-22N
CLEANING AND REPAIR INSTRUCTIONS
DIGITAL VACUUM GAUGES
JB INDUSTRIES

JB INDUSTRIES
REPLACING THE O-RING
Check your vacuum gauge to determine if a gasket or o-ring is present. For gauges using an o-ring, use replacement part P90009. For gauges using a gasket, refer to
REPLACING THE GASKET instructions.
Tools Required
• O-ring tool
• P90009 replacement o-ring
Step 1
Use o-ring tool to get under
the rubber o-ring.
Step 2
Remove o-ring.
Step 3
Place new o-ring in the grove.
Step 4
Press o-ring to securely
seat in the groove.
REPLACING THE GASKET
Check your vacuum gauge to determine if a gasket or o-ring is present. For gauges using a gasket, use replacement part P511 and follow steps below.
For gauges using an o-ring, refer to REPLACING THE 0-RING instructions.
Tools Required
• Needle nose pliers
• P511 replacement gasket
Step 1
Use needle nose pliers to remove
depressor and gasket.
Step 2
Separate depressor from gasket.
Step 3
Place new gasket over depressor.
Step 4
Press depressor and gasket securely
in place.
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JB INDUSTRIES • Digital Vacuum Gauge Cleaning and Repair Instructions • 800.323.0811 • [email protected]