Robinair 17801B Recovery, Recycling, Recharging Unit - Manual (Page 40)

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38
ENGLISH
OIL. . . . . . . . . . . .Change vacuum pump oil; it has been 10 hours since the last oil
change.
R12 . . . . . . . . . . .R-12; indicates R-12 or other refrigerant type requiring 1 /
4
" flare
fittings.
SCAL. . . . . . . . . .Scale problem; the scale is broken or disconnected, or the tank
has exceeded 75 pounds gross weight.
U-HI . . . . . . . . . . .High pressure to vacuum pump; prevents blowing refrigerant
through the vacuum pump. To relieve pressure, perform a
recovery process (see Operating Instructions).
Operating Guidelines