NR 423.03(4)(g)(g) Minimize solvent carryout by doing all of the following: NR 423.03(4)(g)2.2. Moving parts in and out of the degreaser at less than 3.3 meters per minute (11 feet per minute). NR 423.03(4)(g)3.3. Holding the parts in the vapor zone at least 30 seconds or until condensation ceases. NR 423.03(4)(g)4.4. Tipping out any pools of solvent on the cleaned parts before removal from the vapor zone. NR 423.03(4)(g)5.5. Allowing parts to dry within the degreaser for at least 15 seconds or until visually dry. NR 423.03(4)(h)(h) Prevent porous or absorbent materials, such as cloth, leather, wood, or rope, from entering the degreaser. NR 423.03(4)(i)(i) Move parts in and out of the degreaser at less than 1.5 meters per minute (4.9 feet per minute) if the workload occupies more than 50% of the degreaser’s open top area. NR 423.03(4)(j)(j) Except where a load cannot be divided, avoid loading the degreaser to the point where the vapor level would drop more than 10 centimeters (4 inches) when the workload is placed in the vapor zone. NR 423.03(4)(k)(k) Operate the degreaser in a manner that prevents water from being visually detectable in solvent exiting the water separator. NR 423.03(4)(m)(m) Provide a permanent, conspicuous label, summarizing the operating procedures of pars. (e) to (i), and (q) if applicable, and provide supervision or instruction adequate to ensure that the procedures are followed. NR 423.03(4)(n)(n) Equip the vapor degreaser with an enclosed design, such that the cover or door opens only when the dry part is actually entering or exiting the degreaser, that is either a roll-top cover, a canvas curtain cover, a guillotine (biparting) cover, or any other type of cover that slides off the degreaser in a horizontal motion and is designed such that it can be opened or closed without disturbing the vapor layer or the solvent surface, and if the degreaser opening is greater than 2.0 square meters (21.6 square feet), then design the cover to be an automated, powered or mechanically assisted sliding cover. NR 423.03(4)(o)(o) Under par. (c), if par. (c) 1. is chosen, design or modify the freeboard to give a freeboard ratio equal to or greater than 1.0. NR 423.03(4)(p)(p) If a system of equivalent control is chosen under par. (c) 5., the level of control shall be equivalent to that achieved under a freeboard ratio of 1.0. NR 423.03(4)(q)(q) At startup, turn on the refrigerated condenser and the refrigerated freeboard chiller either simultaneously with or before turning on the sump heater. At shutdown, turn off the sump heater either simultaneously with or before turning off the refrigerated condenser and refrigerated freeboard chiller. NR 423.03(5)(5) Conveyorized vapor degreasers. Except as provided under sub. (2) (a), (b), (e), (h), and (i), the owner or operator of a conveyorized vapor degreaser shall do all of the following: NR 423.03(5)(a)(a) Minimize entrance and exit openings during operation so that no opening dimension exceeds the smallest physically possible by more than 20 centimeters (8 inches) or by more than 20% of the opening dimension, whichever is smaller. NR 423.03(5)(b)1.1. A condenser flow switch or other switching system which shuts off the sump heat if the condenser coolant is either not circulating or too warm. NR 423.03(5)(b)2.2. A thermostatically activated control switch which shuts off the sump heat when the vapor level rises above the upper boundary of the normal range. NR 423.03(5)(b)3.3. A spray safety switch which shuts off the spray pump or the conveyor if the vapor level does not stay within the normal range. NR 423.03(5)(c)2.2. Carbon adsorption system, with ventilation greater than or equal to 15 cubic meters per minute per square meter (50 cubic feet per minute per square foot) of air-vapor area (when downtime covers are open), and exhausting less that 25 parts per million of solvent by volume averaged over a complete adsorption cycle. NR 423.03(5)(c)3.3. A system demonstrated to have a control efficiency equivalent to or greater than subd. 1. or 2. and approved by the department. NR 423.03(5)(d)(d) Provide downtime covers for closing off the entrance and exit during shutdown hours. NR 423.03(5)(e)(e) Place downtime covers over entrances and exits of conveyorized vapor degreasers immediately after the conveyors and exhausts are shut down and not remove them until just before startup.