3
WARNING
Failure to follow these procedures may result in personal
injury or death.
DO NOT USE eyebolts or eyebolt holes to rig chiller sections
or the entire assembly.
DO NOT work on high-voltage equipment unless you are a
qualified electrician.
DO NOT WORK ON electrical components, including
control panels, switches, or starters, 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 liquid refrigerant enters the eyes,
IMMEDIATELY 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 it is
necessary to heat refrigerant, use only warm (110°F [43°C])
water.
VERIFY that refrigerant storage cylinders are clean with no
residual moisture, oil, or refrigerant that can contaminate the
refrigerant charge.
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.
CHECK THE REFRIGERANT TYPE before adding refriger-
ant to the chiller. The introduction of the wrong refrigerant can
cause damage or malfunction to this chiller.
Operation of this equipment with refrigerants other than those
cited herein should comply with ANSI/ASHRAE 15 (latest
edition). Contact Carrier for further information on use of this
chiller with other refrigerants.
DO NOT ATTEMPT TO REMOVE fittings, covers, etc.,
while chiller is refrigerant charged or at any time while chiller
is running. Be sure pressure is at 0 psig (0 kPa) before
breaking any refrigerant connection. Note that chiller will be
in a vacuum condition when temperature is below normal
room temperature.
CAREFULLY INSPECT all rupture discs and other relief
devices AT LEAST ONCE A YEAR. If chiller operates in a
corrosive atmosphere, inspect the devices at more frequent
intervals.
DO NOT ATTEMPT TO REPAIR OR RECONDITION any
relief device when corrosion or build-up of foreign material
(rust, dirt, scale, etc.) is found within the valve body or
mechanism. Replace the device.
DO NOT install relief devices in series or backwards.
USE CARE when working near or in line with a compressed
spring. Sudden release of the spring can cause it and objects in
its path to act as projectiles.
USE CARE when working near energized motor. PM motors
produce strong electromagnetic fields which can be harmful
to those with pacemakers or metallic medical implants.
WARNING
MAGNETIC FIELD HAZARD
Units equipped with the permanent magnet motor option
contain rotors with powerful magnetic fields. Permanent
magnet motor rotors, when removed from the stator, expose
surrounding personnel and equipment to powerful magnetic
fields which may cause serious health hazards to persons with
pacemakers or defibrillators, hearing aids, metal implants, or
other implanted electronic medical devices, and may impact
other electronic devices such as mobile phones or
smartwatches, watches, credit cards, etc. Persons in a risk
group should consult a physician prior to compressor
disassembly. Failure to follow these procedures may result in
personal injury or death.
WARNING
The magnetic bearings have UPS power supply that provides
control power. Before service or repair work starts
disconnect the UPS and verify with voltage meter that there
is no power present.
WARNING
Rotation of the shaft can generate voltage potential at the
motor terminals. If the shaft is to be rotated the motor
terminals should be grounded.
CAUTION
Failure to follow these procedures may result in personal
injury or damage to equipment.
DO NOT STEP on refrigerant lines. Broken lines can whip
about and release refrigerant, causing personal injury.
DO NOT climb over a chiller. 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 fans, or pumps.
USE only repair 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.
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.
DO NOT leave refrigerant system open to air any longer than
the actual time required to service the equipment. Seal circuits
being serviced and charge with dry nitrogen to prevent
contamination when timely repairs cannot be completed.
Summary of Contents for AquaEdge 19MV
Page 49: ...49 Fig 46 SIOB...
Page 50: ...50 Fig 47 IOB2...
Page 51: ...51 Fig 48 19MV Auxiliary Controls Wiring...
