Start-Up, Operation, And Maintenance; Introduction - Carrier AquaEdge 19DV Series Start-Up, Operation And Maintenance Instructions Manual

WARNING
LOCK OPEN AND TAG electrical circuits during servic-
ing. IF WORK IS INTERRUPTED, confirm that all cir-
cuits 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 en-
ters the eyes, IMMEDIATELY FLUSH EYES with water
and consult a physician.
NEVER APPLY an open flame or live steam to a refriger-
ant 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 ILLE-
GAL. 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 re-
frigerant to the chiller. The introduction of the wrong re-
frigerant 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) be-
fore 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 ma-
terial (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 com-
pressed spring. Sudden release of the spring can cause it
and objects in its path to act as projectiles.
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 re-
quirements of the original equipment.
DO NOT VENT OR DRAIN waterboxes containing indus-
trial brines, liquid, gases, or semisolids without the permis-
sion of your process control group.
DO NOT LOOSEN waterbox cover bolts until the water-
box 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 con-
tamination when timely repairs cannot be completed.

INTRODUCTION

Prior to initial start-up of the 19DV unit, those involved in the
start-up, operation, and maintenance should be thoroughly fa-
miliar with these instructions and other necessary job data.
Procedures in this manual are arranged in the sequence re-
quired for proper chiller start-up and operation. This book also
outlines the control system for those involved in the start-up,
operation and maintenance of the unit before performing start-
up procedures. It is intended to be used in combination with the
19DV Semi-Hermetic Centrifugal Liquid Chillers Controls
Operation and Troubleshooting manual that describes the con-
trols in detail.
Do NOT punch holes or drill into the top surface of the con-
trol or VFD enclosure for field wiring. Knockouts are pro-
vided for field wiring connections. Drilling holes through
the top of the cabinet can result in a loss of warranty on the
starter assembly because of metal particulate falling on and
into electronic components.
PROVIDE MACHINE PROTECTION. Store machine and
starter indoors, protected from construction dirt and mois-
ture. Inspect under shipping tarps, bags, or crates to be sure
water has not collected during transit. Keep protective ship-
ping covers in place until machine is ready for installation.
Follow latest Water-Cooled Chillers Long Term Storage
document located in Chiller Builder Library.
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CAUTION
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