Operator Preventive Maintenance Checks and Services For Diving Operations

TM 5-4220-231-14&P Table 2-1. Operator Preventive Maintenance Checks and Service For Diving Operations - (Con't). B-Before D-During A-After W-Weekly ITEM INTERVAL ITEM TO BE INSPECTED. Equipment is NO Not Ready/ B D PROCEDURE Available if: A 20 0 0 Valves (20). Check all valve control panel knobs Valve controls for operability. Turn each control counterclock- are jammed wise one turn (air will escape from hose coupler), or broken. and then turn it clockwise to the closed position. Controls are Replace control knob if missing or broken. excessively tight or loose. WARNING Extreme care must be exercised when handling pressure gages, Failure to keep gages free of oil, grease, rust, or contaminants may cause damage or inaccurate readings. Failure to observe this warning may result in equipment failures, injury, or death to personnel. 21 0 0 Gages (21). Inspect for damaged pointers, Lens is cracked or broken lens, missing or unseated missing or retaining ring, or other visible damage. Replace if broken, damaged. pointer is damaged or pointer is not adjusted to 0 psig. 0 0 Ensure pointer is set to 0 psig. Adjust as required. 0 Monitor gages to ensure proper pressure ranges Sudden drop during operation. in pressure affects diver's breathing (EXECUTE EMERGENCY PROCE- DURES, para 2-10.) 2-27