Hansen HA4A series Specifications, Applications, Service Instructions & Parts

HA4AB
Regulator With Electric Wide Opening
INTRODUCTION
These advanced-design,
manufactured MODULAR regulators are superior in
their ability to overcome dirt and sticky oil during
opening and tight closing. Models are available for
nearly every control function requirement of industrial
ammonia and commercial halocarbon refrigeration.
These regulators are ideal for cold storage plants,
poultry plants, meat packing, fish processing, freezers,
ice plants, breweries, bottling plants, heat recovery
units, petrochemical plants, pharmaceutical plants,
supermarkets, and many others.
APPLICATIONS
Evaporator Pressure Control
Defrost Pressure Control
Condensing Pressure Regulation
Receiver Pressure Control
Hot Gas Bypass Capacity Regulation
Suction Pressure Control
Air or Liquid Temperature Regulation
Internal System Pressure Relief
strong-bodied, precision-
Specifications, Applications,
Service Instructions & Parts
HA4A MODULAR
PRESSURE REGULATORS ¾"
THROUGH 6" PORT (20 MM
THROUGH 150 MM)
Various Connection
Styles and Sizes
for Refrigerants
KEY FEATURES
ADDITIONAL FEATURES
Tolerant of Dry Systems
For Ammonia, R22, R134a and other Hansen-
Approved Refrigerants
Wide Range of Options
Inlet, Outlet, or Differential Pressure
Wide Pressure Ranges
Electric Shut- Off, Dual, or Wide-Opening Available
Safe Working Pressure: 400 psig (27 bar)
CSA Certified, CRN for Canada
Contents
Regulator Variations
Capacities
Control Modules (Pilots)
Main Regulators Only (AR1, AR3)
Operation and Adjustment
Installation Dimensions
Parts List
Service and Maintenance, Abbreviations
Ordering Information, Conversions
Bulletin R429d
MAR 2002
Page
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