10
Models with the optional refrigerant identifier
37881/37888
The unit will display “IDENTIFY REFRIGERANT?” To
make your selection use the left or right arrow keys to
toggle from YES to NO. Press the ENTER key to make
your selection and then press the START key to start
the process. If YES is selected the unit will begin the
refrigerant identification process.
If the refrigerant does not pass the identification
process (98% purity) the unit will display the error
message “CONTAMINATED” and the screen will show
the results of the identification. Press the RESET key
and follow the instructions on the screen and the unit
will clear itself automatically. Repeat the identification
process to insure the proper identification of the refrig-
erant purity level.
If the unit fails the second time follow the on screen in-
structions and take the appropriate steps to remove the
contaminated refrigerant with a separate unit for re-
moval of contaminated refrigerant.
WARNING: DO NOT RECOVER CONTAMINATED
REFRIGERANT WITH THIS UNIT. RECOVERING
CONTAMINATED REFRIGERANT WILL VOID ALL
WARRANTIES AND MY CAUSE DAMAGE TO
OTHER AUTOMOBILES THAT YOU SERVICE IN
THE FUTURE.
FULL CYCLE cont.
HYBRID HOSE FLUSH
The Hybrid Hose Flush feature is used to remove resid-
ual oil and contaminates from the unit and hoses. The
SAE J2788 H standard requires that the unit remove
the residual oil so there isn't a risk of cross contaminat-
ing the oil in a hybrid A/C system. Failure to perform
this function before working on a hybrid A/C system
can cause serious issues with the electrical system.
Having too much of the wrong type of oil in a hybrid A/C
system can conduct the electricity to the outside of the
A/C compressor.
SERVICING HIGH VOLTAGE A/C SYSTEMS
(MODELS 37887 AND 37888 ONLY)
Due to issues with oil contamination in High Voltage A/
C systems the 37887 and the 37888 have a unique
flushing feature that reduces cross contamination of oil
below SAE and OEM specifications.
It is necessary to perform the following procedure be-
fore working on a High Voltage A/C system.
1. Select HYBRID HOSE FLUSH in the main menu
2. When the display reads “PLEASE CONNECT
FLUSH ADAPTER” connect the supplied flush
adapter between the high and low side hoses.
3. Press the ENTER key to begin the process
4. The display will then read “FLUSHING HOSES
PLEASE WAIT”
5. When the process is complete press the RESET
key to return to the main menu.
WARNING
FAILURE TO PERFORM THIS PROCESS CAN
CAUSE DAMAGE TO THE A/C SYSTEM COMPRES-
SOR AS WELL AS OTHER ELECTRICAL COMPO-
NENTS RELATED TO THE A/C SYSTEM. THE POSI-
BILITY OF ELECTRICAL SHOCK TO THE TECHNI-
CIAN OR OTHERS MAY ALSO OCCUR BY NOT
PERFORMING THIS PROCESS
INTERGRATED MICRON GUAGE (37889 MODEL
ONLY)
The 37889 model has an integrated micron gauge that
can be used to determine the micron level of the A/C
system. The instructions below will outline how to use
this feature .
Full Cycle / Vacuum operations– Select micron level by
using the up or down arrows. If you would rather enter
a time for the vacuum cycle press the START key. Use
the numeric keypad to set vacuum time. NOTE: Be-
cause of the location of the vacuum sensor it may be
necessary to set the micron lever lower to compensate.
