Schreiber Chillers 2203AC - 3-Stage Chiller - Manual (Page 31)

CONTROL OPERATIONS:
A supply water temperature sensor is being monitor to activate each refrigeration circuit
accordantly. For every temperature increase from the set-point, the controller determines the
stages to come on. A flow switch is equipped to ensure water flow exist in the system. This
flow safety switch prevents any refrigeration to activate if NO flow is detected. A pressure
regulator is installed on the discharge of the pump to regulator water pressure at various
conditions. The pressure regulator is set for 40pisg.
Controller overview:
Main page: Pressing PRG or ESC will return to Main page
Schreiber
Engineering
3-STAGES
CHILLER
Press ESC:
System
Status
Supply: ______F
Setpoint: ______F
Demand:______%
Press DN key:
Return:________F
Ambient:_______F
Press DN key:
Pump1:
ON/OFF EN/DIS
Pump2: ON/OFF EN/DIS
It is advisable to enable both pumps as ONLY one pump is operated at a time.
Press DN key:
Comp1: ON/OFF EN/DIS
Comp2: ON/OFF EN/DIS
Comp3: ON/OFF EN/DIS
Note: There is a square blinking at the upper left corner on the screen, pressing enter
key (arrow pointing to the left) will take the blinker to the pump. Using up or down arrow
key to toggle on/off. Continue pressing enter key will take you to next field. After all
settings are set, the blink MUST return to the upper left hand corner to store the data
and before going to the next screen.