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Refrigeration Diagnostic Screen
This screen displays the operating status of the set
point and actual temperatures, hot gas bypass valve
position as a percentage of full open, and the
compressor running hours and operational status.
I/O Status Button
Touching this button navigates to the I/O Status
screen.
Setup Button
Touching this screen navigates to the Compressor
Setup screen. The Compressor Setup screen is
password protected so navigating to this screen
shows a prompt for a password. The Password is
“9999”.
Process Diagnostic Button
Touching this button navigates to the Process
Diagnostic screen.
Main
Touching this button navigates to the Main screen.
Start-Up
Every unit is factory set to deliver chilled water in
accordance with the standard operating
specifications for that particular chiller. Due to
variables involved with different applications and
different installations, minor adjustments may be
required during the initial start-up to ensure proper
operation.
We strongly recommend the following start-up
procedure be performed by a qualified experienced
refrigeration technician and must be followed in
sequence. If trouble is encountered the fault can
usually be traced to one of the control or safety
devices. This outline serves as a checklist for the
initial start-up and for subsequent start-ups if the
chiller is out of service for a prolonged time.
WARNING: This equipment contains hazardous
voltages that can cause severe injury or death.
WARNING: This equipment contains refrigerant
under pressure. Accidental release of refrigerant
under pressure can cause personal injury and or
property damage.
WARNING: This equipment may contain fan
blades or other sharp edges. Make sure all fan
guards and other protective shields are securely
in place.
WARNING: The exposed surfaces of motors,
refrigerant piping, and other fluid circuit
components can be very hot and can cause burns
if touched with unprotected hands.
CAUTION: Disconnect and lock out incoming
power before installing, servicing, or
maintaining the equipment. Connecting power to
the main terminal block energizes the entire
electric circuitry of the unit. A power supply
provides 24 VDC control power. Electric power at
the main disconnect should be shut off before
opening access panels for repair or maintenance.
CAUTION: Wear eye protection when installing,
maintaining, or repairing the equipment to
protect against any sparks, debris, or fluid leaks.
CAUTION: Wear protective gloves when
installing, maintaining, or repairing the
equipment to protect against any sparks, debris,
or fluid leaks.
CAUTION: Ground the unit properly in
compliance with local and national codes.
CAUTION: The unit requires the main power to
remain connected during off-hours to energize
the compressor’s crankcase heater. Disconnect
main power only when servicing the chiller. The
crankcase heater should remain on when the
compressor is off to ensure liquid refrigerant
does not accumulate in the compressor
crankcase. Connect main power at least 24 hours
prior to initial start-up.
