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Every refrigeration system, containing over 100 pounds (45.36kg)of refrigerant, must have posted as near as practicable to the pressure imposing element of such system a sign having letters not less than 1 inch in height with the wording:
HIGH PRESSURE REFRIGERANT – DANGER UN REFRIGERANTE DE ALTA PRESION – PELIGRO |
All refrigeration piping shall be coded at 30 foot (9.144m) intervals and in every separate area through which the piping extends. A permanent means of identification shall be affixed, having a yellow background and black letters legible from the work floor, dimensioned according to the table below and with the following wording:
HIGH PRESSURE REFRIGERANT – DANGER UN REFRIGERANTE DE ALTA PRESION – PELIGRO |
Pipe Labeling
Outer Diameter of Pipe Covering or Lagging (In Inches) | Letter Heights (In Inches) |
3/4 to 1 1/4 | 1/2 |
1 1/2 to 2 | 3/4 |
2 1/2 to 8 | 1 1/4 |
8 1/4 to 10 | 2 1/2 |
Over 10 | 3 1/2 |
The background of the sign shall be yellow, with black letters.