Carrier 17/19EX - Manual (Page 176)

RLA by manually overriding the guide vane target value on the LID and setting the chilled
water set point to a low value. Do not exceed 105% of the nameplate RLA.
3. When a steady motor current value in the desired range is met, compare the compressor
motor amps value on the Status01 screen to the actual amps shown on the ammeter on the
starter. Adjust the amps value on the LID to the actual value seen at the starter if there is a
difference. Highlight the amps value then press SELECT. Press INCREASE or DECREASE
to bring the value to that indicated on the ammeter. Press ENTER when equal.
4. Make sure that the target guide vane position is released into AUTOMATIC mode.
To Prevent Accidental Start-Up
The PIC can be set up so that start-up of the unit is more difficult than just pressing the
LOCAL or CCN softkeys during machine service or when necessary. By accessing the
Status01 screen, and highlighting the chiller Start/Stop line, the value can be overridden to stop
by pressing SELECT and then the STOP and ENTER softkeys. ‘‘SUPVSR’’ will appear after the
value. When attempting to restart, remember to release the override. The default machine
message line will also state that the Start/Stop has been set to ‘‘Start’’ or ‘‘Stop’’ when the value
is overridden.