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Carrier 19MV Series - User Manual

Carrier 19MV Series
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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 Printed in U.S.A. Form 19XR-CLT-27SI Pg 1 4-24 Replaces: 19XR-CLT-16SI
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.
DANGER
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.
WARNING
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.)
19MV/19XR/23XRV
Positive Pressure Storage System
50/60 Hz

Table of Contents

Questions and Answers

  • M
    Michael JohnsonAug 8, 2025
    Why is my Carrier 19MV Storage compressor losing oil?
    • T
      Tyler PerezAug 8, 2025
      If the Carrier Storage compressor is losing oil, there could be a leak in the system, so locate and repair the leak. Alternatively, the compressor oil return check valve may be plugged or stuck, requiring repair or replacement. Liquid refrigerant might be carrying oil out of the compressor, so check to ensure only refrigerant vapor enters the compressor suction line and add oil as necessary. The motor may have shut down due to the internal thermal protection high-temperature cutout. The high-temperature cutout should reset within 120 minutes.
  • T
    Tammy MartinAug 12, 2025
    What to do if the Carrier Storage compressor does not run?
    • M
      Marissa SimmonsAug 12, 2025
      If the Carrier Storage compressor does not run, it could be due to several reasons. The main power line might be open, in which case you should replace the fuse or reset the circuit breaker. There may be a loose terminal connection, so check the connections. The controls could be improperly wired, so check the wiring and rewire if necessary. A low line voltage could be the cause; check the line voltage and determine the location of the voltage drop. The compressor motor may be defective, so check the motor winding for an open or short and replace the compressor if needed. The compressor might be seized, requiring replacement. Finally, a high-level gage alarm could be the reason, so check the refrigerant level and remove any excess.
  • A
    Aaron RojasAug 16, 2025
    What to do if Carrier 19MV Storage compressor cycles on high-pressure control?
    • J
      Janet MaldonadoAug 16, 2025
      If your Carrier Storage compressor cycles on high-pressure control, it could be due to several reasons. The high-pressure control might be acting erratically; check the capillary tube for pinches and set the control as required. The discharge valve may be partially closed; open the valve. Air might be in the system, so purge the system. The condenser could be scaled, requiring cleaning. Finally, the condenser water pump or fans may not be operating; start the pump or fans.
  • A
    akiddAug 21, 2025
    How to fix system noises in Carrier Storage?
    • C
      cynthia03Aug 21, 2025
      If you are experiencing system noises in your Carrier Storage, it could be due to piping vibrations, so support the piping as required and check for loose pipe connectors. It could also be due to insufficient compressor oil, so add oil.
  • C
    charlespalmerAug 26, 2025
    What to do if Carrier Storage compressor does not run?
    • J
      Julia MillerAug 26, 2025
      If the compressor of your Carrier Storage unit isn't running, several issues could be the cause. First, check if the main power line is open and replace the fuse or reset the circuit breaker. Also, check for loose terminal connections and ensure all wiring is correctly connected and rewired if necessary. Low line voltage can also prevent the compressor from running, so check the line voltage to determine where the voltage drop is occurring. If the motor is defective, check the motor winding for opens or shorts, and replace the compressor if needed. In case of a seized compressor, replacement is also necessary. Finally, a high refrigerant level can trigger an alarm, so check the refrigerant level and remove any excess.
  • J
    Jimmy GriffinAug 29, 2025
    Why does my Carrier 19MV compressor cycle on high-pressure control?
    • B
      Brandy FletcherAug 29, 2025
      The cycling of your Carrier Storage compressor on high-pressure control can stem from several reasons. The high-pressure control itself might be acting erratically; in this case, inspect the capillary tube for any pinches and adjust the control as needed. A partially closed discharge valve can also cause this issue, so ensure the valve is fully open. The presence of air within the system can lead to cycling, requiring you to purge the system. Additionally, a scaled condenser can impede performance, so clean the condenser thoroughly. Finally, ensure the condenser water pump or fans are operating to maintain proper cooling.
  • X
    xrobinsonSep 2, 2025
    What to do if Carrier Storage compressor loses oil?
    • T
      tammycareySep 2, 2025
      If your Carrier Storage compressor is losing oil, here's what you should investigate: * Check for any leaks in the system and repair them. * Inspect the compressor oil return check valve for blockages or sticking, and repair or replace it as necessary. * Ensure that only refrigerant vapor enters the compressor suction line to prevent liquid refrigerant from carrying oil out of the compressor; add oil as needed. * If the motor shuts down due to high temperature cutout, it should reset within 120 minutes.

Carrier 19MV Series Specifications

General IconGeneral
BrandCarrier
Model19MV Series
CategoryStorage
LanguageEnglish

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