TASK 70-21-01-110-001
1 . General.
A.This process is used to clean parts contaminated with oil, grease, or various slightly adherent deposits by a reduction in viscosity and/or dissolution in the solvent.
B.Immersion is generally accompanied by a mechanical stirring of the bath, brushing or ultrasonic action.
CAUTION:
SOME PLASTIC AND RUBBER-BASED MATERIALS ARE ATTACKED BY HYDROCARBON SOLVENTS. DO NOT CLEAN PARTS MADE FROM THESE MATERIALS OR PARTS CONTAINING COMPONENTS MADE FROM THESE MATERIALS WITH HYDROCARBON SOLVENTS.
C.Plastic or rubber-based materials which are attacked by hydrocarbon solvents are best cleaned using steam cleaning.
2 . Equipment.
Subtask 70-21-01-110-011
D.The following equipment is required for the application of this process.
(1)Safety equipment and devices which are standard equipment in surface treatment shops such as: eye bath, emergency showers, protective clothing against electroplating products and means for neutralizing acid or alkaline splashing.
(2)Processing plant for neutralizing waste and used solutions.
(3)Efficient ventilation system for extracting and neutralizing vapors.
(4)A solvent degreasing tank made of stainless steel.
3 . Materials.
Subtask 70-21-01-110-012
 
Solvent Solutions - Table 1
 
Solution
No.
Operating Temperature
 
Stoddard solvent
S1040
Ambient
 
Degreasol 99R
S1147
Ambient
 
Ardrox 552
C04-224  
Ambient
 
Turco IND 79
C04-225  
Ambient
 
Lotoxane Fast
C04-269  
Ambient
4 . Procedure.
Subtask 70-21-01-110-013
WARNING:
SOLVENTS ARE TOXIC. AVOID INHALATION OF VAPORS. AVOID PROLONGED CONTACT WITH EYES, SKIN, OR CLOTHING. OPERATOR SHOULD USE ONLY IN WELL VENTILATED AREA.
WARNING:
STODDARD SOLVENT AND DEGREASOL 99R ARE FLAMMABLE. TAKE PRECAUTIONS AGAINST FIRE IN ACCORDANCE WITH LOCAL REGULATIONS.
E.Immerse the parts slowly into the tank containing one of the solvent solutions listed in Subtask 70-21-01-110-012, Materials.
WARNING:
OPERATOR SHOULD WEAR GLOVES AND A RUBBER APRON IF BRUSHING IS BEING DONE.
F.Stir the solution through mechanical or ultrasonic action or brush by hand.
G.Remove the part and allow it to drip over the tank.
H.Dry use clean, dry air.
5 . Quality Assurance.
Subtask 70-21-01-110-014
I.Visually check for the removal of all initial contamination and make sure that no local build-up of contaminants was produced on the part during dripping and drying.