UL 1963:4ED 2011-06-01

Foreword
Introduction
1 Scope
2 General
3 Glossary
4 Installation and operating instructions
Construction
5 General
6 Assembly
7 Accessories
8 Enclosures
9 Field supply connections
10 Internal wiring and wiring methods
11 Separation of circuits
12 Bonding for grounding
Electrical components
13 Current-carrying parts
14 Insulating material
15 Switches and controllers
16 Motors and motor overload protection
17 Fuseholders
18 Receptacles
19 Receptacle overcurrent protection
20 Capacitors
21 Transformer protection
22 High-voltage control circuit conductor overcurrent
     protection
Spacings
23 High-voltage circuits
24 Low-voltage circuits
Refrigerant system
25 Refrigerants
26 Automotive recovery/recycling equipment
27 Automotive refrigerant 12 extraction equipment
28 Automotive refrigerant 134a recovery/recycling
     equipment
29 Automotive refrigerant recovery/recycling
     equipment intended for use with both R12 and R134a
     in a common refrigerant circuit
30 Refrigerant recovery capacity
31 Refrigerant tubing and hoses
32 Refrigerant-containing parts
33 Pressure-limiting device
34 Pressure relief
35 DOT storage cylinders
Performance
36 Instrumentation
37 Test voltage
38 Leakage current test
39 Input test
40 Starting test
41 Temperature and pressure test
42 Automotive refrigerant 12 recovery/recycling equipment
43 Automotive refrigerant 134a recovery/recycling
     equipment
44 Automotive refrigerant 12 extraction equipment
45 Refrigerant cross contamination test
46 Tests for refrigerant hoses
47 Dielectric voltage-withstand test
48 Condenser fan motor failure test
49 Condenser water failure test
50 Rain test
51 Stability test
52 Strain relief test
53 Burnout tests - electromagnetic components
54 Burnout test - high-voltage transformers
55 Burnout test - electric heater
56 Overload test - low-voltage transformers
57 Overload Test - High-Voltage Transformers
58 Overvoltage and Undervoltage Tests
59 Current Overload Test - Bonding Conductors and Connections
60 Thermal and Acoustical Insulation Resistance Test
61 Limited Short-Circuit Test
62 Protective Devices - Maximum Continuous Current Test
63 Strength Tests - Pressure Containing Components Refrigerant System
64 Tests on Refrigerant Storage Fill Limiting Devices
65 Tests on Weight Scale Assemblies
66 Tests of Gaskets and Seals Used in Refrigerant Systems
67 Shelf Strength Test
68 Strength of Handles
69 Component Restraint Test
70 Accelerated Aging Tests on Gaskets, Sealing Compounds, and Adhesives
71 Metallic Coating Thickness Test
72 Vapor Recovery Test for Commercial Recovery/Recycling Equipment and
     Refrigerant Recovery Equipment
73 Noncondensable Purge Loss Test for Commercial Recovery/Recycling
     Refrigerant Recovery Equipment
MANUFACTURING AND PRODUCTION TESTS
74 Pressure Tests
75 Production Line Dielectric Voltage-Withstand Tests
76 Production Line Grounding Continuity Tests
MARKING
77 General
78 Permanently Connected Equipment
79 Cord Connected Equipment
APPENDIX A
     Standards for Components

This revision to ANSI/UL 1963 dated March 25, 2021 includes the following: • Clarifications and addition of alternate method for evaluating protective electronic circuits and controls using requirements based on UL 60335-1; 3.12.1, 3.13, 3.14, 3.16.1, 3.16.2, 3.26.1, 3.28.1, 3.28.2, 3.28.4, 9.2.1, 17.14 – 17.18.8, 17.19.1, Table 19.2, 25.1.2.2, 27.1 – 27.6, 42.3, 42.4, 45.3, 48.1, 48.2, Section 69A, Section 74, Section 85A, Section 90A, Appendix B • Addition of requirements for remotely operated refrigerant recovery/recycling equipment; 3.18.0, 10.4.7, 14.16, Section 17A, 94.13 • Update of motor-protection requirements; 19.2.1, 19.2.1.1, 19.2.3, 19.2.4 • Clarify requirements for large nonmetallic exterior surface materials; Table 52.1 • Alternate compliance option for EMI filters; 33.1 • Alternate power supplies; 3.28.3, 3.30, 25.3.1, 25.3.3, 25.3.3.1, 25.3.4, 25.3.6, 25.4 (title), 25.4.1, 25.4.1.1, 25.4.2, 25.4.5, 25.4.7 – 25.4.9, 36.1.1, 36.2, Section 36A, Section 69B, 91.27 • Addition of new capacitor standard requirements; 3.5.1, 24.1 – 24.3, 24.5 – 24.7 • Gasket requirements; 9.3.8, 83.1, 83.3 – 83.4.2, 83.5, 83.6 • Wiring subjected to movement; 12.1.10, Section 82A • Clarification to marking requirements; 91.1.1 • Maximum operating current and maximum rated current requirements; 3.2.1, 3.2.2, 3.19.1, 3.19.2, 11.11, 12.1.2, 17.1 – 17.3, 17.11, 17.11.1, 17.13, 19.3.1, 19.3.2, 19.3.2.1, 56.3, 66.3, 66.4, 73.1.4 – 73.1.4.2, 92.2, 92.5, 92.6.1, 92.12 • Refrigerant requirement revisions; 44.1 – 44.4, Section 86A, Section 90B, SB1.2 • Clarifications to barrier requirements; 3.3, 3.4, 5.2.1, 7.1 – 7.2.1, 7.4, 12.1.21, 12.1.26, 12.1.27, 12.1.29, 13.1, 13.3 – 13.6, 14.2, 14.2.1, 16.2, 18.3, 18.4, 20.1, 20.1.1, 41.9, Table 52.1, Table 57.1, A7.2 • Miscellaneous clarifications; 10.1.1, 5.3.1, 5.3.1.1, Table 52.1, 52.3.1, 52.3.2, 73.1.6, 76.8, 76.8.1, A52.3.1 • Revisions for hose assembly requirements for flammability for class 2 and class 3 refrigerants; SB4.1 (title), SB4.1.1, SB4.2.1

These requirements cover refrigerant recovery and recycling equipment to be employed in accordance with the National Electrical Code, NFPA 70 and include battery operated equipment.