UL 104 PDF

1 Scope

1.1 These requirements cover the following devices intended for installation and operation on horizontal and vertically opening hoistway doors and gates and car doors and gates in accordance with the requirements of ASME A17.1/CSA B44:

1. a) Hoistway Door Interlocks;

2. b) Hoistway Door Closed Detection Means;

3. c) Hoistway Door Combination Mechanical Lock and Electric Contacts;

4. d) Hoistway Gate Electric Contacts;

5. e) Car Door Interlocks;

6. f) Car Door Closed Detection Means; and

7. g) Car Gate Closed Detection Means.

1.2 These requirements are intended to be used in conjunction with the relevant sections of ASME A17.1/CSA B44.

1.3 These requirements do not cover:

1. a) Devices with a rated voltage exceeding 600 volts;

2. b) Hoistway door interlock retiring cam device as defined by ASME A17.1/CSA B44; or

3. c) Devices for use only in platform lifts within the scopes of CSA B355 and ASME A18.1.

Summary of Topics

This revision of ANSI/UL 104 dated November 17, 2020 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.