Carrier 19XB specifications Contents, Introduction, Installation

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 certi®ed to the American Society of Mechanical Engineers (ASME) pres- sure vessel code. The tanks are constructed of certi®ed 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 ¯ow

·prewired safety and control devices.

When referencing refrigerant charges in this manual, the HCFC-22 charge will be listed ®rst and the HFC-134a value will follow in brackets.

INSTALLATION

Complete Pre-Installation Checks

IDENTIFY UNIT Ð 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 Ð 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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