User Manual

16
Operating Instructions – Automatic
Theautomaticfunctionallowsausertoprogramanautomaticrecovery,vacuum,leaktest,and/
orchargesequence.Theusermaychoosetoskipanystepintheautomaticoperationduringthe
programming.Atotalautomaticsequencemaytakeanhourtocomplete.
Note: When a charge cycle in automatic mode is complete, the machine will not prompt to equalize
hoses; it will automatically compensate this amount of refrigerant.
1. Connectthehigh-andlow-sideservicehosestotheA/Csystem;openthecouplervalvesonthehoses.
2.SelectAUTOMATIC.
3.Decideiftheunitshouldcollectpre-recoverydiagnosticsbyselectingYESorNO. Note: Data
may be printed from the Recover Diagnostics screen.
4. DecideiftheunitshouldperformarecoverybyselectingYESorNO. Note: Selecting YES
automatically programs the vacuum step of the recovery process. Selecting NO disables recovery,
but vacuum remains a choice for the operator. The next step would be to set vacuum time.
Operating Tips
• If the weight entered is more than the refrigerant
available in the internal tank, the charge
function will not start. The display reads
INSUFFICIENTREFRIGERANT
THEREISNOTENOUGHREFRIGERANTIN
THEISVTOCOMPLETECHARGE.PRESS
TANKFILLTOADDMOREOREXITTOABORT.
Refer to the Maintenance section of this manual
for instructions to Manually Fill the ISV.
• If problems are encountered during the
automatic sequence, the unit will “beep” three
times and the control panel readout will pinpoint
the problem encountered. The sequence
remains paused until the user enters a decision
regarding how to proceed.
• Before the unit begins evacuating the A/C
system during the automatic sequence, it
checks for any pressure in the system that
may damage the vacuum pump. If pressure is
detected, the unit displays
PRESSURETOOHIGHFORVACUUM!
PRESSEXIT
Select EXIT. Recover refrigerant before
proceeding.
• If a leak test was programmed, and a leak is
detected, the unit displays
LEAKTESTFAILED
CONTINUEWITHAUTOMATICMODE?
PRESSYESTOCONTINUENOTOABORT.
Select NO to exit automatic sequence and
perform needed repairs. Press YES to continue
automatic sequence despite the failed leak test.
• To ensure an accurate leak test, it is imperative
that a thorough recovery and evacuation of
the system is performed. During the recovery
process, cold spots can develop in the A/C
system. Pockets of refrigerant in desiccant and
in system oil will continue to vaporize as the A/C
system temperature equalizes toward ambient.
As this occurs, A/C system pressure increases,
which may be interpreted by the unit as a leak.
This varies somewhat with ambient temperature
conditions.
5.Decideiftheunitshouldperformaleaktestby
selectingYESorNO.
6.Decideiftheunitshouldperformachargeby
selectingYESorNO.Ifyes,enteramountofoilto
beinjected.
Note: The amount of oil recovered during the
recovery cycle is automatically injected before
the charge cycle, and no entry will be necessary.
If recovery was not selected, the amount of oil to
be injected may be entered while programming
the charge information.
7. ToggleDYE INJECTonoroff.Select SAVE to
returntothechargescreen.
8.SelectMODEtotogglebetweenhigh-orlow-side
charge,orboth.Note: Charge mode after injecting
oil allows only a high-side charge. Enteracharge
weightusingthekeypad,andselectSAVE.
9.Thedisplayshowsanoverviewofalltests
selected.SelectSTART tobegintheautomatic
sequence.
10 . Whenthesequenceiscomplete,thedisplayshows
CHARGEDIAGNOSTICS(ifapplicable)
STARTA/CTOPERFORMDIAGNOSTICSOR
WITHA/COFFPRESSNEXTTOCLEAR
HOSES.
Toobtaincurrentpressurereadingsand
diagnosticsfromthevehicle,startthevehicle'sair
conditioningsystem,orselectNEXTtocontinue.
11. Closethehigh-andlow-sidecouplervalves,and
removetheservicehosesfromtheA/Csystem.
12. Select NEXT tobeginclearinghoses.This
preparesthemachineforthenextservice.
13. Themachinedisplaysasummaryofactions
performedduringtheautomaticsequence.