Si0034 (203) - Software Enhancements Effective August 2002 - York MAXE OPTIVIEW YK Service Instructions Manual

Service Information Letters / Bulletins

SI0034 (203) - SOFTWARE ENHANCEMENTS EFFECTIVE AUGUST 2002

Flash Memory Card
Beginning August 2002, an enhanced Flash Memory Card will be supplied in new production YK chillers. These
Cards will accommodate the YK Style "F" chiller, scheduled for future release. The Cards are also available from
the Baltimore Parts Distribution Center as replacement parts. They supersede all previous versions of the same
part number. The enhancements that affect the OptiView Control Center are listed below.
The new versions are:
•
Nema 1-4 chillers (all compressors)........C.MLM.01.07.104 (031-01797-001)
•
CE chillers (all compressors)................C.MLM.01.07.205 (031-01797-002)
In addition to being used on all YK Style "F" chiller/compressor combinations, they are backward compatible to
all previous style YK chiller/compressor combinations. The new card supersedes and will be supplied in place of
031-02073-001 and 031-02073-002 Flash Memory Cards that were previously used for "P" compressor applica-
tions. Part number 031-01797-001 will be supplied in place of 031-02073-001 and 031-01797-002 will be supplied
in place of 031-02073-002
.
The various YK chiller modifi cation level (style)/compressor combinations are equipped differently and have dif-
ferent control requirements. Variables include the following:
•
High Speed Thrust bearing proximity sensing – Proximity Probe or Limit Switch
•
Flow Sensor – Paddle type (115Vac digital input) or factory mounted thermal type sensor (+5Vdc analog
input)
•
Oil Heater Outputs – Either TB1-34 or TB1-64 on I/O Board
•
Refrigerant Level Control Default Period – Either 3.5 seconds or 10.0 seconds
•
"Oil – Variable Speed Pump-Pressure Setpoint Not Achieved" safety shutdown threshold – Either 25
PSID or 35 PSID
Flash Memory Card version C.MLM.01.07.xxx and later are applicable and backward compatible to all YK chiller/
compressor combinations. They contain all control variables for all combinations. For correct control, the chiller
mod level/compressor size combination must be entered (using Service Access level) using the CHILLER MOD
Setpoint key on the OPERATIONS Screen. The selections are as follows: (Default is "Mod F – GH Compr")
a. "Mod F – GH Compr"
b. "Mod F – J Compr"
c. "Mod F – P Compr"
d. "Mod CDE – GHJ Compr"
e. "Mod E – P Compr"
Once the appropriate chiller/compressor combination is entered, the program automatically bundles the functionality
and control per the following table:
174
FORM 160.54-M1(503)
YORK INTERNATIONAL