Carrier 19XRV Series Start-Up And Service Instructions

Start-Up and Service Instructions

SAFETY CONSIDERATIONS

Centrifugal and screw compressor liquid chillers are designed to
provide safe and reliable service when operated within design
specifications. When operating this equipment, use good judg-
ment and safety precautions to avoid damage to equipment and
property or injury to personnel.
Be sure you understand and follow the procedures and safety pre-
cautions contained in the chiller instructions as well as those listed
in this guide.
Failure to follow these procedures will result in severe personal
injury or death.
ONLY QUALIFIED electrical personnel familiar with the
construction and operation of this equipment and the hazards
involved should install, adjust, operate, or service this equip-
ment.
READ AND UNDERSTAND this manual and other applica-
ble manuals in their entirety before proceeding. Failure to ob-
serve this precaution could result in severe bodily injury or loss
of life.
DO NOT install modification kits with power applied to the
drive. Disconnect and lock out incoming power before at-
tempting such installation or removal. Failure to observe this
precaution could result in severe bodily injury or loss of life.
UNUSED WIRES in conduit must be grounded at both ends to
avoid a possible shock hazard caused by induced voltages. Al-
so, if a drive sharing a conduit is being serviced or installed, all
drives using this conduit should be disabled to eliminate the
possible shock hazard from cross-coupled motor leads. Failure
to observe these precautions could result in bodily injury.
DO NOT VENT refrigerant relief valves within a building.
Outlet from rupture disc or relief valve must be vented out-
doors in accordance with the latest edition of ANSI/
ASHRAE 15 (American National Standards Institute/Ameri-
can Society of Heating, Refrigerating, and Air-Conditioning
Engineers). The accumulation of refrigerant in an enclosed
space can displace oxygen and cause asphyxiation.
PROVIDE adequate ventilation in accordance with ANSI/
ASHRAE 15, especially for enclosed and low overhead spac-
es. Inhalation of high concentrations of vapor is harmful and
may cause heart irregularities, unconsciousness, or death. Mis-
use can be fatal. Vapor is heavier than air and reduces the
amount of oxygen available for breathing. Product causes eye
and skin irritation. Decomposition products are hazardous.
DO NOT USE OXYGEN to purge lines or to pressurize a
chiller for any purpose. Oxygen gas reacts violently with oil,
grease, and other common substances.
(Dangers continued in next column.)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53190061-01
DANGER
Printed in U.S.A.
with PIC III/PIC 6 Controls
Rockwell PowerFlex 755 VFD Option
NEVER EXCEED specified test pressures. VERIFY the al-
lowable test pressure by checking the instruction literature and
the design pressures on the equipment nameplate.
DO NOT USE air for leak testing. Use only refrigerant or dry
nitrogen.
DO NOT VALVE OFF any safety device.
BE SURE that all pressure relief devices are properly installed
and functioning before operating any chiller.
THERE IS A RISK OF INJURY OR DEATH by electrocu-
tion. High voltage may be present on the motor leads even
though the motor is not running. Open the power supply dis-
connect before touching motor leads or terminals.
Failure to follow these procedures may result in personal inju-
ry or death.
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and goggles
and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from system
using both high-pressure and low-pressure ports.
c. Traces of vapor should be displaced with nitrogen and
the work area should be well ventilated. Refrigerant in
contact with an open flame produces toxic gases.
d. Cut component connection tubing with tubing cutter and
remove component from unit. Use a pan to catch any oil
that may come out of the lines and as a gage for how
much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when neces-
sary. Oil can ignite when exposed to torch flame.
DO NOT work on high-voltage equipment unless you are a
qualified electrician.
DO NOT WORK ON electrical components, including control
panels, switches, VFD, or oil heater until you are sure ALL
POWER IS OFF and no residual voltage can leak from capaci-
tors or solid-state components.
LOCK OPEN AND TAG electrical circuits during servicing.
IF WORK IS INTERRUPTED, confirm that all circuits are
de-energized before resuming work.
AVOID SPILLING liquid refrigerant on skin or getting it into
the eyes. USE SAFETY GOGGLES. Wash any spills from
the skin with soap and water. If liquid refrigerant enters the
eyes, IMMEDIATELY FLUSH EYES with water and con-
sult a physician.
(Warnings continued on next page.)
Form 19/23-8SS Pg 1
19XRV, 23XRV
DANGER
WARNING
6-19 Replaces: 19/23-7SS