Start-up and Shut-down
CVHH-SVX001A-EN 81
Control Panel Devices and Unit-
Mounted Devices
Unit Control Panel
Safety and operating controls are housed in the unit
control panel, the starter panel, and the purge control
panel. The control panel operator interface and main
processor is called Tracer AdaptiView and is located on an
adjustable arm connected to the base of the control panel.
For more information about operating Tracer AdaptiView,
refer to Tracer AdaptiView™ Display for Water-Cooled
CenTraVac™ Chillers Operations Guide (CTV-SVU01D-EN,
or the most recent version).
The control panel houses several other controls modules
called panel mounted LLID (Low Level Intelligent Device),
power supply, terminal block, fuse, circuit breakers, and
transformer. The IPC (Interprocessor communication) bus
allows the communications between LLIDs and the main
processor. Unit mounted devices are called frame
mounted LLIDs and can be temperature sensors or
pressure transducers. These and other functional switches
provide analog and binary inputs to the control system.
User-Defined Language Support
Tracer AdaptiView is capable of displaying English text or
any of twenty-four other languages. Switching languages
is simply accomplished from a language settings menu.
Unit Start-up and Shut-down
Procedures
Note: Graphic labels (shown above) are used for CE
application only.
Important:
• Before servicing, disconnect all power sources and
allow at least 30 minutes for capacitors to discharge.
• All electrical enclosures—unit or remote—are IP2X.
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury. During installation, testing,
servicing and troubleshooting of this product, it may be
necessary to work with live electrical components.
Have a qualified licensed electrician or other individual
who has been properly trained in handling live
electrical components perform these tasks.
WARNING
Toxic Hazards!
Do not allow the chiller to increase above 54.4°C (130°F)
in temperature while unit is off. Failure to prevent high
chiller temperature will cause the inside pressure to
rise:
• Do not run evaporator water pump longer than
30 minutes after the chiller is shut down.
• Ensure that the evaporator is isolated from the hot
water loop before changeover to heating mode.
The rupture disk is designed to relieve and discharge
the refrigerant from the unit if the pressure in the
evaporator exceeds 344.7 kPag (50 psig). A significant
release of refrigerant into a confined space due to a
rupture disk failure could displace available oxygen to
breathe and cause possible asphyxiation. Should a
rupture disk fail, evacuate the area immediately and
contact the appropriate rescue or response authority.
Failure to follow instructions could result in death or
serious injury.
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