Installation, Operating, and MaintenanceInstructions

For Use With Positive Pressure Chillers

SAFETY CONSIDERATIONS
Positive pressure storage systems are designed to pro-
vide safe and reliable service when operated within de-
signspecifications. When operating this equipment, use
good judgment and safety precautions to avoid damage
to equipment and property or injury to personnel.
Be sure you understand and follow the procedures and
safety precautions contained in this guide.
DO NOTVENT refrigerant relief valves within a building. Outlet
from rupture disc or relief valve must be vented outdoors in ac-
cordancewith the latest edition of ASHRAE 15 (American Society
of Heating, Refrigeration, and Air Conditioning Engineers). The
accumulationof refrigerant in an enclosed space can displace oxy-
gen and cause asphyxiation.
PROVIDE adequate ventilation in accordance withASHRAE 15,
especiallyfor enclosed and low overhead spaces. Inhalation of high
concentrationsof vapor is harmful and may cause heart irregulari-
ties,unconsciousness, or death. Misuse can be fatal. Vapor is heavier
thanair and reduces the amount of oxygen available for breathing.
Productcauses eye and skin irritation. Decomposition products are
hazardous.
DONOT USE OXYGEN to purge lines or to pressurize a machine
for any purpose. Oxygen gas reacts violently with oil, grease, and
other common substances.
NEVEREXCEED 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 VALVEOFF any safety device.
BESURE that all pressure relief devices are properly installed and
functioning before operating any machine.
DO NOT WELD OR FLAMECUT any refrigerant line or vessel
untilall refrigerant (liquid and vapor) has been removed from chiller.
Traces of vapor should be displaced with dry air or nitrogen and
thework area should be well ventilated. Refrigerant in contact with
an open flame produces toxic gases.
DONOT USE eyebolts or eyebolt holes to rig machine sections or
the entire assembly.
DO NOTwork on high-voltage equipment unless you are a quali-
fied electrician.
DONOT WORK ON electrical components, including control pan-
els,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.
LOCKOPEN AND TAGelectrical circuits during servicing. IF WORK
IS INTERRUPTED, confirm that all circuits are deenergized be-
fore resuming work.
DO NOT syphon refrigerant by mouth.
AVOIDSPILLING liquid refrigerant on skin or getting it into the
eyes. USE SAFETY GOGGLES. Washany spills from the skin
withsoap and water. If any enters the eyes, IMMEDIATELYFLUSH
EYES with water and consult a physician.
NEVERAPPLY an open flame or live steam to a refrigerant cyl-
inder.Dangerous overpressure can result. When necessary to heat
refrigerant, use only warm (110 F [43 C]) water.
DO NOT REUSE disposable (nonreturnable) cylinders or
attemptto 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 transferring refrig-
erantto the machine. The introduction of the wrong refrigerant can
cause damage or malfunction to this machine.
Operation of this equipment with refrigerants other than those
citedherein should comply with ASHRAE 15 (latest edition). Con-
tactCarrier for further information on use of this machine with other
refrigerants.
DONOT ATTEMPTTO REMOVE fittings, covers, etc., while ma-
chineis under pressure or while machine is running. Be sure pres-
sure is at 0 psig (0 kPa) before breaking any refrigerant
connection.
CAREFULLYINSPECT all relief devices, rupture discs, and other
relief devicesAT LEAST ONCE AYEAR. If machine operates in
a corrosive atmosphere, inspect the devices at more frequent
intervals.
DONOT ATTEMPT TO REPAIROR 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.
USECARE 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.
DO NOT STEPon refrigerant lines. Broken lines can whip about
and cause personal injury and damage to the machine.
DONOT climb over a machine. 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 com-
ponents are light, use such equipment when there is a risk of slip-
ping or losing your balance.
BE AWAREthat certain automatic start arrangements CAN EN-
GAGE THE STARTER.Open the disconnect ahead of the starter
in addition to shutting offthe machine or pump.
USE only repair or replacement parts that meet the code require-
ments of the original equipment.
DOUBLE-CHECK that coupling nut wrenches, dial indicators, or
other items have been removed before rotating any shafts.
DO NOT LOOSEN a packing gland nut before checking that the
nut has a positive thread engagement.
PERIODICALLYINSPECT all valves, fittings, and piping for cor-
rosion, rust, leaks, or damage.
DONOT MIX REFRIGERANT from chillers that use different com-
pressor oils. Compressor damage can result.

19XB

Positive Pressure Storage System

50/60 Hz

Manufacturerreserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2
Tab 5a PC211 CatalogNo. 531-927 Printed in U.S.A. Form19XB-1SI Pg1 6-96 Replaces:New