Daikin AWV008, Инструкция по установке, эксплуатации и обслуживанию

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IOM 1242-2 • PATHFINDER
®
MODEL AWV CHILLERS 42 www.DaikinApplied.com
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Operator Responsibilities
It is important that the operator become familiar with the
equipment and the system before attempting operation. During
the initial startup of the chiller, the Daikin Applied service
technician will be available to answer any questions and
instruct the proper operating procedures. It is recommended
that the operator maintain an operating log for each individual
chiller unit. In addition, a separate maintenance log should be
kept of the periodic maintenance and servicing activities.
Operator Schools
Training courses for Pathfinder
®
Air-Cooled Screw
Maintenance and Operation are held throughout the year at the
Daikin Learning Institute in Verona, Virginia. The class includes
instruction on basic refrigeration, MicroTech
®
III controllers,
enhancing chiller efficiency and reliability, MicroTech
®
III
troubleshooting, system components, and other related
subjects. For more information, refer to the back cover of this
document for Training contact information.
Software Version
The unit software and BSP (Board Support Package) versions
can be viewed using the keypad/display. From the Main Menu,
turn the knob to the right to reach the About Chiller menu and
press Enter (the knob). The software version is displayed as
“App Version =”. Scroll down in this menu (turn knob to the
right), the BSP version will also be displayed (“BSP Version=”).
WARNING
Electric shock hazard: can cause personal injury or
equipment damage. This equipment must be properly
grounded. Connections to, and service of, the MicroTech ® III
control panel must be performed only by personnel who are
knowledgeable in the operation of this equipment .
CAUTION
Static sensitive components. A static discharge while
handling electronic circuit boards can cause damage to the
components. Use a static strap before performing any service
work. Never unplug any cables, circuit board terminal blocks,
or power plugs while power is applied to the panel.
NOTICE
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance
with this instruction manual, can cause interference to radio
communications. Operation of this equipment in a residential
area can cause harmful interference, in which case the user
will be required to correct the interference at the user’s own
expense. Daikin disclaims any liability resulting from any
interference or for the correction thereof.
General Description
The MicroTech
®
III control system consists of a controller and
a number of extension input/output (I/O) modules, which vary
depending on the unit size and configuration. The control
system provides the monitoring and functions required for the
controlled, efficient operation of the chiller. The MicroTech
®
III
controllers used on Pathfinder
®
chillers are not interchangeable
with previous MicroTech
®
II controllers.
The operator can see all critical operating conditions by
using the screen located on the main controller. In addition
to providing all normal operating controls, the MicroTech
®
III control system will take corrective action if the chiller is
operating outside of its normal design conditions.
The control panel is located on the front of the unit at the
compressor end. There are three doors. The control panel is
behind the left-hand door. The power panels are behind the
middle and right-hand doors. The control power transformer is
located in the power panel adjacent to the control panel.
Controller Features
• Readout of the following temperature and pressure
readings:
— Entering and leaving chilled water temperature
— Saturated temperatures and pressures for evaporator
and condenser
— Outside air temperature
— Suction and discharge temperatures with calculated
superheat for discharge and suction lines
— Oil pressure and temperature
— Suction and discharge pressure
• Automatic control of primary and standby chilled water
pumps. The control will start one of the pumps (based
on lowest run-hours) when the unit is enabled to run (not
necessarily running on a call for cooling) and when the
water temperature reaches a point of freeze possibility.
• Three levels of security protection against unauthorized
changing of set points and other control parameters.
• Warning and fault diagnostics to inform operators of
conditions in plain language. All events and alarms are
time and date-stamped for identification of when the fault
condition occurred.
• Twenty-five previous alarms are available.
• Remote input signals for chilled water reset, demand
limiting, and unit enable.
• Test mode allows the service technician to manually
control the outputs and can be used for a system check.
• Building Automation System (BAS) communication
capability via LonTalk
®
, Modbus
®
, or BACnet
®
standard
protocols for all BAS manufacturers.
• Pressure transducers for direct reading of system
pressures.
NOTE: The Emergency Switch Relay, located on the front of
the control panel door when ordered, de-energizes
the control power of all circuits when activated,
causing an immediate compressor and fan shutdown.