JB INDUSTRIES DVR-22 User manual

OPERATING MANUAL
DVR-22
VACUUM GAUGE
Includes a
1/4" angled
adapter fitting

JB INDUSTRIES • DVR-22 Vacuum Gauge Operating Manual • 630.851.9444 • [email protected]
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Introduction
Thank you for purchasing a JB Industries’ DVR-22 Vacuum Gauge. This device is
capable of accurately measuring the vacuum level in various systems used in the HVACR
industry. This gauge displays vacuum readings on an easy-to-view back-lit LCD screen.
Specifications
Vacuum Range 9,000 micron – 20 microns
Resolution 1 micron; Resolution varies based on depth of vacuum
Sensor Type Thermistor
Vacuum Units Microns, Torr, mTorr, PSIA, mBar, Pascals, and InHg
Power Supply Three AA batteries (included)
Battery Life Approximately 55 hours
Operating Temperature +32°F to 122°F (0°C to +50°C)
Storage Temperature +14°F to 140°F (-10°C to +60°C)
Humidity 85% RH @113°F (45°C), non-condensing
Display Backlit LCD
Unit Weight 9.5 oz
General Safety
Use caution when servicing all types of systems. Some refrigerants are flammable
or toxic. Pipes, tubes, refrigerant and other components of HVACR equipment can be
very hot (or very cold). Skin can easily be burned or frostbitten if refrigerants and
components are touched. Use adequate personal protective equipment when servicing
these systems. Follow all local and national codes, rules, and regulations when
servicing HVACR equipment.

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JB INDUSTRIES • DVR-22 Vacuum Gauge Operating Manual • 630.851.9444 • [email protected]
Features
• Measures vacuum levels in HVACR equipment
• Brass female 1/4” flare fitting easily attaches to common
system fittings; Includes an angled adapter fitting for alternate positioning and
improved visibility
• Large back-lit LCD display is easy-to-read
• Intuitive design saves the lowest vacuum reading
• Adjustable auto-off feature, long run-time, and battery
life indicator
• Four button interface offers easy setting adjustments
• Durable plastic housing
• Robust vacuum sensor for accurate vacuum measurements
and easy cleaning
• 1 year warranty
• Made in the USA
PART NO. DESCRIPTION
DVR-22 Vacuum Gauge and 1/4" Angled Adapter
Installing Batteries
1. Remove the screw from the cover on the back of the gauge
2. Place 3 AA batteries inside
Note the orientation of the + and – side of the batteries. Re-install the cover and screw

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JB INDUSTRIES • DVR-22 Vacuum Gauge Operating Manual • 630.851.9444 • [email protected]
Operating Instructions
Power Clamp On/Off
1. Press POWER button to turn on
2. Press and hold POWER button to turn off
Screen Icons/Definitions
Changing the Unit of Measurement
With the vacuum gauge on, press the UNITS button
Lowest Vacuum Reading
The gauge remembers the lowest reading
Press the LOWEST VACUUM button to view the lowest vacuum measurement in
memory
Auto-off Timer
The DVR-22 will stay on for a user-defined period of time
After the time period expires, the unit will shut off to conserve battery life
The user can select a time period of 10 minutes, 30 minutes, or 60 minutes

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JB INDUSTRIES • DVR-22 Vacuum Gauge Operating Manual • 630.851.9444 • [email protected]
Using the Vacuum gauge
Attaching the Gauge to a System
1. Prior to evacuating a system, ensure that there is no refrigerant in the system
2. Connect a vacuum pump to the system
3. Connect the vacuum gauge to an available ¼” port, or use valve core removal
tools with side ports, and connect the gauge to the side port
Ideally, use a side port with a valve that can be closed to isolate the gauge from the
system during the charging phase
4. Turn on the pump and read the DVR-22 display to view the vacuum level
Protecting the Sensor
Protect the sensor from high pressures and refrigerants during the charging cycle
Isolate the gauge from the system after evacuation is complete to prevent damage or
contamination to the sensor
Cleaning the Sensor
If the sensor becomes contaminated with refrigerant or oil, it can be cleaned with
isopropyl alcohol
1. Use a syringe or squeeze bottle filled with isopropyl alcohol; use the highest
percentage of alcohol that can be obtained
2. Squeeze the alcohol into the ¼” fitting on the gauge
3. Place a finger over the fitting and shake the gauge to distribute the alcohol and cause
it to move around the sensor
4. Drain the alcohol and repeat the procedure several times
5. Allow the unit to dry and test it on a system
If the reading is still not accurate, repeat the cleaning process

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RETURN FOR REPAIR
Every effort has been made to provide reliable, superior quality products. However, in the
event your instrument requires repair, please contact JB Customer Service Department
to obtain a Return Goods Authorization (RGA) number. Ensure that all returned products
are packed to avoid any damage in shipment. Paperwork should be placed in a separate
plastic bag and should include JB’s assigned RGA number, a description of the problem
and any customer assigned repair or purchase order number, if applicable.
Contact Customer Service for RGA number:
800.323.0811 Toll-free
800.552.5593 Toll-free Fax
Products should be shipped with freight prepaid to:
JB Industries
RGA#_________
601 N. Farnsworth Ave., Aurora, IL 60505
Warranty
The DVR-22 is warrantied against defects in materials and workmanship for 1 year
from date of purchase. JB products are guaranteed when used in accordance with our
guidelines and recommendations. Warranty is limited to the repair, replacement, or
credit at invoice price, (our option) of products which in our opinion are defective due
to workmanship and/or materials. In no case will we allow charges for labor, expense or
consequential damage. Repairs performed on items out of warranty will be invoiced on
a nominal basis; contact wholesaler for details. Additional product information available
online at www.jbind.com.
WARNING: This product can expose you to chemicals including lead which are known to
the State of California to cause cancer and birth defects or other reproductive harm. For
more information go to www.P65Warnings.ca.gov.
JB INDUSTRIES
Part No. 10757-01-308 0622