Specifications

57
FORM 160.80-NOM1
YORK INTERNATIONAL
the compressor DSH be your guide. Moving the slide
valve in increments that are too large will only result in
the oil recovery process taking longer than necessary.
8. When the slide valve position is at least 40% and
the compressor DSH is above 25ºF, the chiller can
be placed in the AUTO mode of operation. Press
the AUTO key.
9. Press the STATUS key. The message WARNING
– EXCESS CHARGE will appear. To clear this
message, press the WARNING RESET key.
10. Determine the reason for the OIL LOSS/REFRIG-
ERANT CHARGE messages and take necessary
action to prevent reoccurrence.
4
YS CHILLER OIL RECOVERY GUIDE
ELAPSED TIME FROM START (Minutes)
DSH % Slide Valve
35 30 25 20 15 10
5 0
100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0
1 2 3 4 5 6 7 8 9 101112 13141516
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
17.8
9.9
Warning Excess Charge
Excess Charge Override
8%
13%
Auto Unload
Manual Operation
Automatic Operation
Discharge Superheat (DSH)
Slide Valve Position %
YSBBBBS1-CHD Off on Low Oil Separator Level safety, additional three gallons of oil added to evaporator
LD04903
FIG. 33 – YS CHILLER OIL RECOVERY GUIDE