INFORMATION

MG44INT - Wireless Vacuum Gauge

Can I connect the MG44 to the SMAN digital manifold?

Yes, the MG44 connects to our SM380/SM480. SM380/SM480 prior to production as of June 1, 2021 will require a firmware update in order to connect the MG44. The firmware update instructions are available on the Fieldpiece website, go to https://www.fieldpiece.com/download-software-firmware-updates/. Production after June 1, 2021 will include the newest firmware and does not require an update.

How can I read the measurements on the MG44?

There are three ways to view the measurements. ...................................................................................................................................................................................................................................................................................................................................................... 1. On the LCD screen on the tool itself ...................................................................................................................................................................................................................................................................................................................................................... 2. Wirelessly connected to the JobLink® application ...................................................................................................................................................................................................................................................................................................................................................... 3. Wirelessly connected to the SMAN480/SMAN380 manifold ......................................................................................................................................................................................................................................................................................................................................................

Why is my vacuum pressure inaccurate?

Vacuum pressure being inaccurate is a sign of oil holding moisture either inside the sensor compartment or in the hose that the MG44 is connected to. The oil in your vacuum pump may also need to be changed. Clean sensor periodically with rubbing alcohol.

How to clean/maintain my MG44?

Clean the sensor of the MG44 with rubbing alcohol. Do not stick anything into the sensor. Doing so will damage the sensor. Check the user manual for details.

Where is the best location to put the MG44 for most accurate vacuum pressure reading?

Ideally it is best to connect the MG44 to the furthest point in the system (away from the vacuum pump).

Why will my MG44 show vacuum pressure when directly hooked up to pump but not when I am pulling on a system?

Evacuation takes time. You are pulling a vacuum in a larger volume (Refrigeration system/AC system + vacuum pump) compared to just a vacuum pump. Check that there are no leaks in your hoses, change the oil of the vacuum pump, and perform a triple evacuation if there is an indication of a lot of moisture in the system.

How do I check if my MG44 is leaking or not?

Connect MG44 to empty recovery tank and using a vacuum pump pull down to 500 microns and isolate the pump from recovery tank. Microns should rise slowly and stabilize and not immediately rise.

Why does my vacuum pressure jump up when I turn off my vacuum pump?

The moisture inside the system is still boiling off and is no longer being taken out or compensated for by the vacuum pump. Allow sufficient time (this will depend on the volume of the system) for stabilization.

Why does my MG44 read – – – – ?

The MG44 has a measuring range between 50-25,000 microns. Anything outside of that range will show the 4 dashes – – – -. The bar graph will show a wider range from deep vacuum up to atmosphere.

What is the wireless range?

300 meters line of sight.

What is the maximum overpressure on the MG44?

The maximum overpressure for the MG44 is 60 bar (870psig)

Can my tool connect wirelessly to the manifold?

Yes, you can connect your tool to the manifold.