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Menu 2 – Touch Calibration
This is a firmware menu provided by the HMI
manufacturer to allow the touch sensitivity and
operation to be fine-tuned. HMI calibration occurs at
the factory prior to shipment. This menu is password
protected to prevent unintended adjustments that
may impair proper functioning of the system. This
menu is for use only by qualified service technicians.
Please contact our Customer Service Department for
assistance as needed to access this area of the
system program.
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.
Corporate Office: 724.584.5500 Instant Access 24/7 (Parts and Service): 800.458.1960 Parts and Service: 814.437.6861
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.
Step 1 - Connect Main Power
Connect main power properly ensuring it matches
the voltage shown on the nameplate of the unit.
Check the electrical phase sequence prior to start-
up. Operation of the compressor with incorrect
electrical phase sequencing will result in mechanical
damage to the compressors. Check the phasing with
a phase sequence meter prior to applying power.
The proper sequence should read "ABC" on the
meter. If the meter reads "CBA", open the main
power disconnect and switch two line leads on the
line power terminal blocks (or the unit mounted
disconnect). All components requiring electric power
are in-phase at the factory. Do not interchange any
load leads that are from the unit contactors or the
motor terminals. After making proper power
connection and grounding, turn the main power on.
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