LOW POWER MODE AND AUTO SHUTOFF
If no buttons are pushed, the unit will automatically turn OFF to conserve power, as follows:
• No Vacuum is Showing: 10 Minutes
• Vacuum is Showing: 1 Hour
When vacuum is showing, after 10 minutes of operation, if no button is pressed, the unit
will enter a low power mode. In this mode the unit updates the display every 7 seconds,
instead of every 0.5 seconds. The display will show “POWER SAVE MODE” while in this
state. This extends the battery life about 3 times. To exit the low power mode at any time,
press any button on the unit.
VG64 WARRANTY
LIMITED TO TWO YEARS FROM DATE OF PURCHASE
Sealed Unit Parts Co., Inc. warrants its products to be free from defects in materials and
workmanship under normal use and service. Sealed Unit Parts Co., Inc. will repair or
replace without charge any such products it finds to be so defective on its return to
Sealed Unit Parts Co., Inc. The foregoing is in lieu of all other expressed or implied
warranties, including those of merchantability or fitness for a particular purpose.
The foregoing is also the purchaser's sole remedy and is in lieu of all other guarantees,
obligations or liabilities or any consequential or incidental damages attributable to
negligence or strict liability.
3
DISPLAY RESOLUTION
The display resolution depends on the vacuum displayed and is as follows:
Vacuum Range
(Microns)
0 to 140
140 to 400
400 to 800
800 to 2000
2000 to 6000
6000 to 9000
9000 to 16000
16000 to 19000
Above 19000
Vacuum Range
(Pascal)
0 to 18
18 to 50
50 to 100
100 to 260
260 to 800
800 to 1200
1200 to 2100
2100 to 2600
Above 2600
Resolution
(Microns)
0.5
1
2
5
20
100
200
1000
----is displayed
Resolution
(Pascal)
0.05
0.1
0.2
0.5
2
10
20
100
----is displayed
CLEANING THE VG64 LIFETIME SENSOR
It is recommended that the VG64 sensor be cleaned periodically to
maintain unit accuracy. Oil and other contaminants slightly reduce the accuracy
of the VG64 unit. Follow the instructions below for cleaning.
• Use an eyedropper to pour a few drops of ordinary rubbing alcohol into
either port. Keep the other port closed.
• Close the port with the supplied cap.
• Shake the VG64 unit for approximately 10 seconds. A slight movement of the vacuum
sensor in the case is normal and does not affect the internal connection in any way.
• Open the vacuum port. Empty the alcohol and air dry the sensor.
Close the vacuum port with the supplied cap when the VG64 is not used. This prevents
contamination of the sensor.
Many of the vacuum gauge warranty returns that SUPCO receives are due to contaminated
sensors. For vacuum gauges that are heavily contaminated, leave the alcohol in the gauge
overnight to clean the sensor more effectively.
Vacuum Gauge
Service Hose
To System
Vacuum Pump
Valve
Vacuum
Pump
Valve for
Pressurizing System
or Breaking
Vacuum to
Atmosphere
Main Shut
Off Valve
Gauge Valve
CONNECTING THE
VG64 TO THE
VACUUM SYSTEM
The VG64 should be connected to the vacuum system
at the vacuum port. The "Auxiliary Port" is
primarily for cleaning and should normally be
closed with the supplied cap. It is possible to
connect the Vg64 in-line, however it may restrict
flow and increase the evacuation time.
CHECKING HVAC SYSTEMS FOR LEAKS
When checking a system for leaks use only copper tubing and a vacuum
proof valve. Generally, standard hoses will not hold a vacuum. If using
the blank-off valve on the vacuum pump check it for leaks periodically.
At the beginning of the test the VG64 reading may increase due to system
equalization. The vacuum reading should hold after a minimum of 5
minutes. If the reading continues to increase it may indicate a leak in
the system.
