Carrier 19QA - Manual (Page 2)

CONTENTS
Page
SAFETY CONSIDERATIONS ..................................... 1
INTRODUCTION ......................................................... 2
INSTALLATION .......................................................... 2-7
Complete Pre-Installation Checks............................ 2
• IDENTIFY UNIT
• INSPECT SHIPMENT
Make Piping Connections ......................................... 2
Make Electrical Connections .................................... 2
Optional Caster Installation ...................................... 2
CONTROLS AND COMPONENTS............................. 7,8
Pump and Motor ......................................................... 7
Oil Separator............................................................... 7
Heater .......................................................................... 7
Tube-in-Tube Condenser........................................... 7
Level Gage .................................................................. 7
Water Separation Sight Glass .................................. 7
Purge Separator Assembly....................................... 7
Refrigerant Hoses ...................................................... 8
Liquid Indicator.......................................................... 8
Filter Drier ................................................................... 8
OPERATION ............................................................. 9-14
Evacuation .................................................................. 9
Liquid Refrigerant Transfer....................................... 9
• BEFORE TRANSFERRING LIQUID
REFRIGERANT
• TO TRANSFER LIQUID REFRIGERANT
Refrigerant Vapor Transfer ...................................... 10
• BEFORE TRANSFERRING REFRIGERANT
VAPOR
• TRANSFER REFRIGERANT
Purge Separator Assembly ...................................... 12
Oil Separation ............................................................ 12
Water Separation ....................................................... 13
MAINTENANCE ......................................................... 15
Maintaining the Pump .............................................. 15
Pump Coupling ......................................................... 15
High-Pressure Cutout Switches.............................. 15
Refrigerant Storage Tank......................................... 15
Refrigerant Hoses..................................................... 15
TROUBLESHOOTING................................................ 16
INTRODUCTION
The 19QA Refrigerant Management System (RMS) has
been designed to help owners and operators of centrifugal
chillers conserve low pressure refrigerants and prevent the
release of excessive amounts of refrigerant into the atmo­
sphere. The proper use of this equipment will minimize the
loss of CFCs and HCFCs. The 19QA will also recycle re­
frigerant contaminated with water, oil, or acid. See Fig. 1
and Table 1 for component information.
The 19QA is ARI (Air Conditioning & Refrigeration In­
stitute) certified as a refrigerant recovery/recycling device
and is registered with ETL (Electrical Testing Laboratory)
for safety. The Refrigerant Management System’s storage
tanks are rated for 20, 30, or 40 cu ft (.57, .85, 1.13 cu
meters). See Table 2. Casters are available as an option on
all storage tanks. See Fig. 1-3. See Fig. 4 and 5 for addi­
tional RMS component descriptions and dimensions.
Table 1 — Interconnecting Refrigerant Hoses,
Valves, and Fittings
NUMBER PART NUMBER PART
1 KA73PS003 3 ft (.91 m) Hose
2 KA73PS006 6 ft (1.88 m) Hose
1 KA73PS012 12 ft (3.66 m) hose
1 19QA020-152 Liquid Indicator
8 19QA020-132 Valve and Coupler
1 19QA015-142 Chiller Vapor Valve
NOTE: Refer to Fig. 1 for model number description and accessory
caster package part numbers.
INSTALLATION
Complete Pre-Installation Checks
IDENTIFY UNIT — Identify the model number and serial
number printed on the nameplate. Check this information
against the job requirements.
INSPECT SHIPMENT — Inspect unit for damage before
removing unit from shipping conveyance. If unit appears
damaged, it should be inspected by a shipping inspector be­
fore removal. File claim with shipping company if ship­
ment is damaged or incomplete. The manufacturer is not
responsible for damage incurred during transit.
Check all components. Notify the supplier immediately
if any item is missing. To prevent loss or damage, leave all
parts in their original package until they are needed.
Make Piping Connections — All connections be­
tween the pump, tube-in-tube condenser, storage tank, and
chiller can be made using the factory supplied refrigerant
hoses. A hand valve with coupler is factory supplied, but
must be field installed at each end of the 4 hoses. See
Fig. 5. Field supplied copper tubing and valve manifolds
must be used if a permanent installation is required.
The 19QA is factory equipped with a dual relief valve
assembly. See Fig. 4. The outlet of the valves is 1-1/2 in.
MPT. Vent the dual relief assembly outdoors in accordance
with ASHRAE 15 (Safety Code for Mechanical Refrigera­
tion), latest edition, and all applicable local codes. Use a
minimum 1-1/2 in. pipe for the relief valve outlet. Provide
fittings so vent piping can be disconnected periodically for
inspection and testing of valves.
Cover the outdoor vent with a rain cap and place a field
supplied condensate drain at the low point in vent piping to
prevent water build up on the atmospheric side of the valve.
Make Electrical Connections — The 19QA has 2
electrical cords. See Table 3 and Fig. 6. One electrical cord
is attached to the pump and the other is attached to the stor­
age tank heater. If both electrical cords are used at the same
time, separate outlets are required. Connect electrical power
in accordance with minimum circuit amps (MCA) and max­
imum overcurrent protection amps (MOCP) as specified on
the unit nameplate. Be sure that the unit is connected and
grounded in accordance with all applicable electrical codes.
Optional Caster Installation — if optional casters
have been provided, bolt the 4 caster assemblies to the stor­
age tank. See Fig. 1-3. Size 020 and 030 storage tanks have
2 rigid casters mounted on one end of the tank and 2 swivel
casters with brakes mounted on the other end of the storage
tank. The size 040 storage tanks have 2 swivel casters with
brakes mounted on one end of the storage tank and 2 swivel
casters with locks mounted on the other end of the storage
tank.