---
kind: "section"
citation: "40 C.F.R. § 751.603"
title: "40"
number: "751.603"
heading: "Definitions."
url: "https://uscodex.org/cfr/40/751.603"
---

# §751.603. Definitions.


The definitions in [Subpart A of part 751](/cfr/40/part751-subpartA.md) apply to this Subpart unless otherwise specified in this section. In addition, the following definitions apply to this Subpart:

3rd generation machine means a dry-to-dry machine with a refrigerated condenser, as those terms are defined in [40 CFR part 63](/cfr/40/part63.md), subpart M.

4th or 5th generation machine means a dry-to-dry machine with a carbon adsorber and refrigerated condenser, as those terms are defined in [40 CFR part 63](/cfr/40/part63.md), subpart M.

Distribute in commerce has the same meaning as in section 3 of the Act, except that the term does not include retailers for purposes of §§ [751.613](/cfr/40/751.613.md) and [751.615](/cfr/40/751.615.md).

ECEL has the same meaning as in [§ 751.5](/cfr/40/751.5.md) and, for PCE, is an airborne concentration of PCE of 0.14 part per million (ppm).

ECEL action level means a concentration of airborne PCE of 0.10 part per million (ppm) calculated as an eight (8)-hour time-weighted average (TWA).

Energized electrical cleaner means a product that meets both of the following criteria: (1) the product is labeled to clean and/or degrease electrical equipment, where cleaning and/or degreasing is accomplished when electrical current exists, or when there is a residual electrical potential from a component, such as a capacitor; and (2) the product label clearly displays the statements: “Energized Equipment use only. Not to be used for motorized vehicle maintenance, or their parts.”


## Notes

### Source

Source: 89 FR 103607, Dec. 18, 2024, unless otherwise noted.

### Authority

Authority: 15 U.S.C. 2605, 15 U.S.C. 2625(l)(4).

### Source

Source: 84 FR 11435, Mar. 27, 2019, unless otherwise noted.