Introduction; Light Emitting Diodes On Boards; Abbreviations And Explanations - Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual

CAUTIONS
DO NOT STEP on refrigerant lines. Broken lines can
whip about and release refrigerant, causing personal
injury.
DO NOT climb over a machine. Use platform, catwalk,
or staging. Follow safe practices when using ladders.
USE MECHANICAL EQUIPMENT (crane, hoist, etc.)
to lift or move inspection covers or other heavy components.
Even if components are light, use mechanical equipment
when there is a risk of slipping or losing your balance.
BE AWARE that certain automatic start arrangements
CAN ENGAGE THE STARTER, TOWER FAN, OR
PUMPS. Open the disconnect ahead of the starter, tower
fan, and pumps. Shut off the machine or pump before
servicing equipment.
USE only repaired or replacement parts that meet the
code requirements of the original equipment.
DO NOT VENT OR DRAIN waterboxes containing
industrial brines, liquid, gases, or semisolids without the
permission of your process control group.
DO NOT LOOSEN waterbox cover bolts until the
waterbox has been completely drained.
DOUBLE-CHECK that coupling nut wrenches, dial
indicators, or other items have been removed before
rotating any shafts.
DO NOT LOOSEN a packing gland nut before checking
that the nut has a positive thread engagement.
PERIODICALLY INSPECT all valves, fittings, and
piping for corrosion, rust, leaks, or damage.
PROVIDE A DRAIN connection in the vent line near
each pressure relief device to prevent a build-up of
condensate or rain water.
6

2 - INTRODUCTION

Prior to initial start-up of the 19XRV unit, those involved
in the start-up, operation, and maintenance should be
thoroughly familiar with these instructions and other
necessary job data. This book is outlined to familiarise
those involved in the start-up, operation, and maintenance
of the unit with the control system before performing start-
up procedures. Procedures in this manual are arranged in the
sequence required for proper chiller start-up and operation.

2.1 - Light emitting diodes on boards

All boards continuously check and indicate the proper
operation of their electronic circuits. A light emitting diode
(LED) lights on each board when it is operating properly.
• The red LED flashing for a  second period on the
NRCP-BASE board indicates correct operation. A
different rate indicates a board or a software failure.
• The green LED flashes continuously on all boards to
show that the board is communicating correctly over
its internal bus. If the LED is not flashing, this indicates
a LEN bus wiring problem.
• The orange LED of the master board flashes during
any communication via the CCN bus.
When the unit is energised, all boards must flash in a
synchronised way. If a board does not flash at the same
time as the others, verify its connection at the LEN bus.

2.2 - Abbreviations and explanations

Frequently used abbreviations in this manual include:
CCM — Chiller Control Module
CCN — Carrier Comfort Network®
CCW — Counterclockwise
CW — Clockwise
ECDW — Entering Condenser Water
ECW — Entering Chilled Water
EMS — Energy Management System
HGBP — Hot Gas Bypass
I/O — Input/Output
ICVC — International Chiller Visual Controller
LCD — Liquid Crystal Display
LCDW — Leaving Condenser Water
LCW — Leaving Chilled Water
LED — Light-Emitting Diode
OLTA — Overload Trip Amps
PIC III — Product Integrated Controls III
RLA — Rated Load Amps
SI — International System of Units
TXV — Thermostatic Expansion Valve
VFD — Variable Frequency Drive
Words printed in all capital letters or in italics may be
viewed on the International Chiller Visual Controller
(ICVC) (e.g., LOCAL, CCN, ALARM, etc.).
Words printed in both all capital letters and italics can also
be viewed on the ICVC and are parameters (e.g., CON-
TROL MODE, COMPRESSOR START RELAY, ICE
BUILD OPTION, etc.) with associated values (e.g., modes,
temperatures, percentages, pressures, on, off, etc.).