Carrier POSITIVE PRESSURE STORAGE SYSTEM 19XB - Manual (Page 2)

CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Complete Pre-Installation Checks . . . . . . . . . . . . . 2
• IDENTIFY UNIT
• INSPECT SHIPMENT
Mount the Pumpout Unit . . . . . . . . . . . . . . . . . . . . . 3
• MOUNTING ON THE CHILLER
• FLOOR MOUNTING
Rig the Storage Tank . . . . . . . . . . . . . . . . . . . . . . . . . 3
Make Piping Connections . . . . . . . . . . . . . . . . . . . . 7
• INSTALL VENT PIPING TO RELIEF DEVICES
Make Electrical Connections . . . . . . . . . . . . . . . . . . 7
CONTROLS AND COMPONENTS . . . . . . . . . . . . . . 11
Pumpout Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
• CONTROLS
• SAFETY CONTROL SETTINGS
• COMPRESSOR
• CONDENSER
• OIL SEPARATOR
• SUCTION AND DISCHARGE VALVES
Storage Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
• DRAIN VALVE
• DUAL RELIEF VALVES
• PRESSURE GAGE
• LEVEL GAGE
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-15
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
• REFRIGERANT TRANSFER
• TRANSFERRING LIQUID REFRIGERANT FROM
THE CHILLER COOLER TO THE CHILLER
CONDENSER OR PUMPOUT STORAGE TANK
• TRANSFERRING LIQUID REFRIGERANT FROM
THE CHILLER CONDENSER OR PUMPOUT
STORAGE TANK TO THE CHILLER COOLER
• DISTILLING THE REFRIGERANT
Pumpout and Refrigerant Transfer
Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
• OPERATING THE PUMPOUT UNIT
• TO READ REFRIGERANT PRESSURES
• POSITIVE PRESSURE CHILLERS WITH STORAGE
TANKS
• CHILLERS WITH ISOLATION VALVES
• DISTILLING THE REFRIGERANT
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15,16
Pumpout Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• PUMPOUT COMPRESSOR OIL CHARGE
Storage Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Ordering Replacement Parts . . . . . . . . . . . . . . . . . 16
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 16
INTRODUCTION
The 19XB Positive Pressure Storage (PPS) System has
been designed to help owners and operators of positive pres-
sure chillers store refrigerants HCFC-22 and HFC-134a dur-
ing service and repair work. The 19XB system conserves
these refrigerants and prevents the release of excessive amounts
of refrigerant into the atmosphere. The proper use of this
equipment minimizes the loss of HFCs and HCFCs.
The 19XB PPS system shown in Fig. 1 consists of a pump-
out unit mounted on a storage tank. The pumpout unit is of-
fered as a free-standing unit that can be used with chillers
that have an existing storage tank or with chillers that have
isolation valves that permit built-in refrigerant storage.
The 19XB PPS systems are factory tested and certified to
the American Society of Mechanical Engineers (ASME) pres-
sure vessel code. The tanks are constructed of certified steel
and are pressure rated at 300 psig (2068 kPa). The PPS stor-
age tank is equipped with dual relief valves for proper vent-
ing per ASHRAE 15 (American Society of Heating Refrig-
eration, and Air Conditioning Engineers) guidelines. An
automatic level switch is prewired to the control circuit to
ensure proper storage levels.
The 19EA pumpout unit is a complete, hermetic, compact
unit that consists of:
• a spring-mounted reciprocating compressor with a direct-
drive motor
• a water-cooled refrigerant condenser
• an oil separator
• suction and discharge valves to control refrigerant flow
• prewired safety and control devices.
When referencing refrigerant charges in this manual, the
HCFC-22 charge will be listed first and the HFC-134a value
will follow in brackets.
INSTALLATION
Complete Pre-Installation Checks
IDENTIFY UNIT — Identify the assembly number
(Table 1) printed on the pumpout unit and storage tank name-
plates. Check this information against the job requirements.
Fig. 1 shows the PPS system and its major components.
Refer to Tables 2 and 3 for physical data.
INSPECT SHIPMENT — Inspect unit for damage before
removing unit from shipping conveyance. If unit appears dam-
aged, it should be inspected by a shipping inspector before
removal. File a claim with the shipping company if ship-
ment is damaged or incomplete. The manufacturer is not re-
sponsible 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.
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