Product Overview

BluVac+ LTE User’s Guide
6
Oil Sensor
Prevent oil from being drawn into the Vacuum Sensor. For HVAC/R service, always recover
refrigerant prior to attaching gauge. If possible, always close the blank-off valve on the vacuum pump
prior to turning the vacuum pump off. Over time, oil vapor and other materials may contaminate the
sensor. The BluVac+ LTE has a built in Oil Sensor that will detect this condition. If the OIL indicator
on the display illuminates, this is an indication that the vacuum sensor has been contaminated and is
no longer functioning accurately. If the sensor becomes completely saturated with oil to the extent
that it cannot function properly at all, the message will show on the display. Prior to further use
of the BluVac+ LTE, clean the sensor as describe in the “Cleaning the Vacuum Sensor” section
below.
Backlight
To activate the Backlight temporarily, press once. The indicator on the display will flash, and
the backlight will turn off automatically after 1 minute. To activate the Backlight permanently, press
again. The indicator on the display will show solid. Turn off the backlight by pressing
repeatedly until the indicator turns off. During Sleep Mode, the backlight will turn off to help
conserve battery power, but will turn on again automatically upon resumption of normal operation if it
was previously set in the permanent-on mode.
Sound
The BluVac+ LTE has an internal speaker that will emit a beep for each valid key press, and also
functions as an alarm in the Calibration mode (see the Calibration section below). It will also beep
every 5 minutes in Sleep Mode. For silent operation, the sound can be muted by pressing and
holding the key. The Calibration mode alarm is not affected by the mute status. The indicator on
the LCD display indicates that the sound is on (not muted).
Range and Resolution
The BluVac+ LTE has a broad vacuum pressure measurement range and very high resolution
according to the table below:
Vacuum
Range Resolution
Pascals (Pa)
0 — 3,333.1 0.1 Pa
Millibar (mBar)
0 — 33.331 0.001 mBar
Millitorr (mTorr)
0 — 25,000 1 mTorr
mmHg (mmHg)
0 — 25.000 0.001 mmHg
Microns (Microns)
0 — 25,000 1 Micron