Carrier 19MV Series Installation, Operating And Maintenance Instructions

SAFETY CONSIDERATIONS
Positive pressure storage systems are designed to provide
safe and reliable service when operated within design spec-
ifications. When operating this equipment, use good judg-
ment and safety precautions to avoid damage to equipment
and property or injury to personnel.
Installation, start-up, and servicing of this equipment can
be hazardous due to system pressures, electrical compo-
nents, and equipment location (roofs, elevated structures,
etc.). Only trained, qualified installers and service techni-
cians should install, start up, and service this equipment.
Be sure you understand and follow the procedures and
safety precautions contained in this guide.
Failure to follow these procedures will result in severe per-
sonal injury or death.
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 ASHRAE 15
(American 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 ASHRAE
15, especially for enclosed and low overhead spaces. Inhala-
tion of high concentrations of vapor is harmful and may cause
heart irregularities, unconsciousness, or death. Misuse can be
fatal. Vapor is heavier than air and reduces the amount of oxy-
gen available for breathing. Product causes eye and skin irrita-
tion. Decomposition products are hazardous.
DO NOT USE OXYGEN to purge lines or to pressurize a
machine for any purpose. Oxygen gas reacts violently with oil,
grease, and other common substances.
NEVER EXCEED specified test pressures, VERIFY the
allowable test pressure by checking the instruction literature
and the design pressures on the equipment nameplate.
DO NOT USE air for leak testing. Use only tracer gases and
dry nitrogen.
DO NOT VALVE OFF any safety device.
BE SURE that all pressure relief devices are properly installed
and functioning before operating any machine.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53190114-01
Installation, Operating, and
Maintenance Instructions
DANGER
Printed in U.S.A.
Positive Pressure Storage System
Failure to follow these procedures may result in personal
injury 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 USE eyebolts or eyebolt holes to rig machine sec-
tions or the entire assembly.
DO NOT work on high-voltage equipment unless you are a
qualified electrician.
DO NOT WORK ON electrical components, including con-
trol panels, switches, starters, or oil heater until you are sure
ALL POWER IS OFF and no residual voltage can leak from
capacitors 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 any enters the eyes, IMMEDI-
ATELY FLUSH EYES with water and consult a physician.
NEVER APPLY an open flame or live steam to a refrigerant
cylinder. Dangerous overpressure can result. When necessary
to heat refrigerant, use only warm (110°F [43°C]) water.
DO NOT REUSE disposable (nonreturnable) cylinders or
attempt to refill them. It is DANGEROUS AND ILLEGAL.
When cylinder is emptied, evacuate remaining gas pressure,
loosen the collar and unscrew and discard the valve stem. DO
NOT INCINERATE.
(Warnings continued on next page.)
Form 19XR-CLT-27SI
19MV/19XR/23XRV
WARNING
Pg 1 4-24 Replaces: 19XR-CLT-16SI
50/60 Hz