Authority: IC 15-16-1-6; IC 15-16-1-7

Affected: IC 15-16-1-10

Sec. 4. (a) The manufacturer of a tool bar refrigeration unit shall provide traceable documentation of recommended operation and maintenance procedures for any refrigeration unit manufactured after the effective date of this rule.

(b) Tool bar refrigeration units shall be:

1. (1) constructed of corrosion resistant materials; and
2. (2) installed, maintained, and operated in accordance with the manufacturer's specifications and limitations for use.

(c) A manual shutoff valve, meeting the requirements of 355 IAC 3-2-5(a), shall be installed directly upon the inlet of the heat exchanger so that the operator may close the shutoff valve to prevent any backflow of refrigerated ammonia through the delivery line from the heat exchanger unit while connecting, disconnecting, or otherwise servicing the tool bar breakaway device. The manual shutoff valve may be a quick-acting shutoff valve.

(State Chemist of the State of Indiana; 355 IAC 3-10-4; filed Jan 19, 2001, 2:04 p.m.: 24 IR 1650; errata filed Apr 24, 2001, 9:06 a.m.: 24 IR 2709; readopted filed Jun 20, 2001, 3:22 p.m.: 24 IR 3822; readopted filed Apr 27, 2007, 2:03 p.m.: 20070509-IR-355070039RFA; readopted filed Nov 25, 2013, 3:27 p.m.: 20131225-IR-355130482RFA; readopted filed Jul 2, 2019, 10:42 a.m.: 20190731-IR-355190258RFA; readopted filed Nov 4, 2025, 2:37 p.m.: 20251119-IR-355240619RFA)