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 ........................6
• INSTALL VENT PIPING TO RELIEF DEVICES
Make Electrical Connections .....................6
CONTROLS AND COMPONENTS ................11
Pumpout Unit ...................................11
• CONTROLS
• SAFETY CONTROL SETTINGS
• COMPRESSOR
• CONDENSER
•OILSEPARATOR
• SUCTION AND DISCHARGE VALVES
Storage Tank ....................................11
•DRAINVALVE
• 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 Compressor Oil Charge ...............15
Storage Tank ....................................16
Ordering Replacement Parts ....................16
TROUBLESHOOTING............................16
INTRODUCTION
The 19XR Positive Pressure Storage (PPS) System has been
designed to help owners and operators of positive pressure
chillers store HFC-134a refrigerant during service and repair
work. The 19XR system conserves this refrigerant and pre-
vents the release of excessive amounts of refrigerant into the
atmosphere. The proper use of this equipment minimizes the
loss of HFCs.
The 19XR PPS system shown in Fig. 1 consists of a pump-
out unit mounted on a storage tank. The pumpout unit is
offered as a free-standing unit that can be used with chillers
that have an existing storage tank or with chillers that have iso-
lation valves that permit built-in refrigerant storage.
The 19XR 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 185 psig (1276 kPa). The PPS storage
tank is equipped with dual relief valves for proper venting per
ASHRAE 15 (American Society of Heating, Refrigeration, and
Air Conditioning Engineers) guidelines. An automatic level
switch is prewired to the control circuit to ensure proper stor-
age levels.
The 19XR pumpout unit is a complete, hermetic, compact
unit that consists of:
• a hermetic 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.
INSTALLATION
Complete Pre-Installation Checks
IDENTIFY UNIT — Identify the assembly number (Table 1)
printed on the pumpout unit and storage tank nameplates.
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 shipment 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.
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