Schreiber Chillers Modular Chillers - Manual (Page 5)

5
The temperature control or the dial thermometers are reading the discharge water temperature in Fahrenheit by
default.
ANTIFREEZE
Keep the water tank filled at the proper level. We recommend adding a maximum of 30 percent, by weight, of
ethylene glycol or propylene glycol if you are going to operate the unit below 38
o
F or in an ambient condition below
freezing point.
Water Chiller Starting Checklist
PROPER VOLTAGE
A single point power connector is provided at the chiller disconnect to supply power. Check the voltage
on the chiller nameplate to see that it matches your power supply.
CRANK CASE HEATER
Power to the unit should be on for a minimum of 3 hours prior to full usage to allow the crank case heater to
warm the refrigerant in the compressor.
PLEASE READ SECTION ON CRANK CASE HEATER
ON PAGE 17.
MOTOR ROTATION
Make sure the fan motors and water pumps are running in the correct rotation. If the water pumps run for more
than a short period in the wrong direction, the seal might back off the shaft. To test if the water pumps are
rotating in the correct direction, manually push in the pump contactor; the pump shaft should be rotating
clockwise. The compressor switch is used to test the fan motor’s rotation.
The compressors to this unit always run in the correct rotation.
SERVICE ACCESS PANEL
The service access panel MUST BE in place when the unit is running. If it is not in place, the unit will cut off on
the high-pressure limit switch, or be inefficient in its capacity. Also, it is dangerous to install panels while the unit
is running.
PLEASE READ- IMPORTANT
TEMPERATURE CONTROL