GP Series Portable Chillers Chapter 4: Operation 37 of 90
Enter the established Operator Password by depressing the to move the
position of the cursor, and then depressing the or button to
increment or decrement the number. Once all of the numbers have been
entered depress the to accept the password. The following screen will
appear.
Figure 15: Operator Setpoints Screen
5. Depress to move the cursor to the CHILLED FLUID SP line. Use the
or button to increment or decrement the value. Depress to
accept the value and move the cursor down one line.
6. Depress the button twice to return to the main status screen.
7. Depress the to start the chiller.
8. Check pump rotation
9. Check the pump amp draw and pump pressure. Make sure that the amp draw
reading is within the running load and service factor amps.
10. Operate the chiller, looking for any leaks and listening for unusual noises or
vibrations that could indicate improper operation.
Elevated sound level and substantially reduced current draw indicate reverse
rotation. After several minutes of operation, the compressor internal protector
trips.
4-3 Status Screens The controller has eight (8) preconfigured status screens. The main status screen (shown in
Figure Figure 16) shows the main operating points of the chiller: Entering and Leaving fluid
temperatures; Leaving fluid setpoint, pump discharge pressure, tank fluid level (depth), and
percentage of hot-gas bypass output.