WARNING: USE CORRECT PERSONAL PROTECTION. ELECTROCLEANER SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
(4)
Immerse filter element in electrocleaner solution (Method No. 202G) for four to six minutes. During this period, filter element shall be made an anode for one to two minutes at a potential of four to seven volts dc.
(5)
Rinse filter element in cold running tap water.
Cleaning
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WARNING: USE CORRECT PERSONAL PROTECTION. THIS CHEMICAL SOLUTION CAN CAUSE SKIN, EYE AND LUNG DAMAGE. THE DANGER AND PRECAUTIONS FOR EACH CHEMICAL IS DIFFERENT.
(6)
Immerse filter element in equal parts muriatic acid (35 percent HCI, Commercial Grade) (SECTION VII) and water, by volume, at room temperature for one-half to one minute.
(7)
Rinse filter element thoroughly in cold running tap water.
WARNING: USE CORRECT PERSONAL PROTECTION. ELECTROCLEANER SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
(8)
Immerse filter element in electrocleaner solution used in Step (4) for four to six minutes.
(9)
Rinse in cold running tap water.
(10)
Pressure flush filter element (internal and external) using clean water.
(11)
Place filter element (open end down) in beaker and fill beaker with cleaner (Dowclene EC) (SECTION VII) to submerge filter element.
(12)
Place beaker containing filter element in ultrasonic cleaner tank and fill ultrasonic cleaner tank to within three-eighths inch of top with water.
(13)
Operate ultrasonic cleaner for five minutes.
(14)
Discard contaminated cleaner in beaker (Dowclene EC) and rinse filter element and beaker with clean cleaner (Dowclene EC) (SECTION VII) using plastic squeeze bottle.
(15)
Refill beaker with clean cleaner (Dowclene EC) and operate ultrasonic cleaner for an additional five minutes.
(16)
Repeat Steps (14) and (15) until cleaner (Dowclene EC) remains clean after a five minute operation period.
(17)
Remove the filter element from beaker and pressure flush (internal and external) using clean water.
WARNING: USE CORRECT PERSONAL PROTECTION. COMPRESSED AIR WILL CAUSE LOOSE PARTICLES THAT CAN GET IN YOUR EYES. COMPRESSED AIRFLOW CAN CAUSE CUTS, DO NOT POINT IT AT YOUR SKIN.
(18)
Pressure air-dry (20 psig (137,895 kPa) maximum) filter element.
(19)
Pressure drop check cleaned filters in accordance with Inspection (SECTION III).
(20)
If cleaned filter element is not to be installed immediately, place in clean, dry container.
Cleaning
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R. Method No. 203S: Cleaning Compressor Blades and Applying Anti-fretting Coating
Clean compressor blades and apply anti-fretting coating as follows:
WARNING: USE CORRECT PERSONAL PROTECTION. CHROMIC-ACID PICKLE SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
(1)
Clean compressor blades for one hour in 20 percent chromic acid pickle solution (MIL-M-3171C, Type I) (SECTION VII), heated to 180 to 200F (82 to 93C), to remove existing anti-fretting coating from dovetail area of blades.
(2)
Repeat cleaning procedure if necessary to remove anti-fretting coating; distinguished by dark blue/black color.
(3)
Rinse blades in hot water, 160 to 200F (71 to 93C).
WARNING: USE CORRECT PERSONAL PROTECTION. COMPRESSED AIR WILL CAUSE LOOSE PARTICLES THAT CAN GET IN YOUR EYES. COMPRESSED AIRFLOW CAN CAUSE CUTS, DO NOT POINT IT AT YOUR SKIN. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：标准施工手册 STANDARD PRACTICES MANUAL 20-00-02/70-00-01(31)
