SECTION III. OPERATION UNDER USUAL CONDITIONS

TM 5-4220-226-14&P 2-3. Reporting Deficiencies. If any problem with the equipment is discovered during PMCS or while it is being operated that cannot be corrected at the operator/crew level, it must be reported. Refer to DA PAM 738-750 and report the deficiency using the proper forms. 2-4. Special Instructions. a. Keep It Clean. Cleanliness is imperative in maintaining and handling diving system compo- nents. All tools and parts must be kept free of oil, grease, rust, or other contamination IAW chapter 4, section VII. b. Cleaning. Do not use trichlorethylene or methyl chloroform in cleaning operations. The only acceptable cleaning agents are Tri Basic Sodium Phosphate and nonionic soaps. SECTION III. OPERATION UNDER USUAL CONDITIONS 2-5. General. This section describes normal operating procedures for the diving helmet. Included are predive setup procedures, mission operational procedures, and post dive procedures. 2-6. Predive Setup Procedures. After performing PMCS procedures in Section II, accomplish the steps listed in table 2-2, predive setup procedures. These procedures are intended as an overview of predive setup and are not intended to replace a proper training program, but are only a general outline of use. Table 2-2. Predive Setup Procedures Step Procedure 1. Visual inspection. Perform PMCS. 2. Connect and check emergency air supply. a. Gage emergency air cylinder and record. Install first stage regulator on emergency air cylinder and set over bottom pressure at 135 psig +5 psig. b. Ensure emergency air supply valve is completely closed. Connect the cylinder valve to the emergency air supply inlet on the side block. Set relief valve on first stage regulator at 200 psig. c. Open the cylinder valve and the emergency air supply valve. d. Verify that air flows by listening for the characteristic hiss of escaping air. 2-5