Product Code:SAE J639
Title:Safety Standards for Motor Vehicle Refrigerant Vapor Compresssions Systems
Issuing Committee:Interior Climate Control Committee
Scope:This SAE Recommended Practice is restricted to mechanical vapor compression refrigerant systems which provide cooling for the occupant's compartment. This document provides guidelines for refrigerant containment and safety for a mobile air- conditioning (A/C) system. The purpose is to also provide cautionary statements for the mobile A/C industry to alert service technicians to the inadvisability and the possible health and safety effects associated when venting refrigerant during service of mobile A/C systems. It is not intended to restrict the use of, or further development of, other types of refrigeration systems for passenger compartment cooling. Should other systems be found practical at some future time, this document may be amended or an additional recommended safety practice drawn up for such other systems. This document only addresses CRC-12 (R-12) and HFC-134a (R-134a) refrigerants. To prevent mobile A/C system refrigerant contamination, all other alternate refrigerants considered for automotive use require unique service fittings.
MIL-S-3786F, MILITARY SPECIFICATION: SWITCHES, ROTARY (CIRCUIT SELECTOR, LOW-CURRENT CAPACITY), GENERAL SPECIFICATION FOR (6 JAN 2006) [S/S BY MIL-DTL-3786G]., This specification covers the general requirements for circuit selector, rotary switches,designed for low power, alternating current (ac) or direct current (dc) switching applications (capable ofmaking and breaking a resistive load of 2 amperes or less, unless otherwise specified (see 3.1), whichare primarily for use in electronic and communications equipment. Acquisition of switches of a designcovered by a specification sheet will require additional data as specified in 6.2.2. Acquisition of switchesof a design not covered by a specification sheet will require additional data, giving detailed electrical andmechanical requirements, tolerances, and applicable additions and exceptions to the generalrequirements and tests specified herein (see 6.2.3). Switches which differ because of electricalconfiguration, shape, or size of operating shaft, type of construction, number of switch sections (see6.7.6), (see 3.2), bushing length, temperature life characteristics, angle of throw, vibration grade, shocktype, insulation, or altitude are considered to be standard switches under a particular style (see 3.2),provided they meet the envelope size and dimensional, environmental, and electrical requirements of theparticular style.
基本信息
| 标准名称： | 加工轻合金不通孔普通螺纹带后引导的短柄机、手用丝锥 ｄ＝４~５ｍｍ |
| 中标分类： |
机械 >>
工艺装备 >>
刀具 |
| 发布日期： | 1988-04-09 |
| 实施日期： | 1988-05-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
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所属分类： 机械 工艺装备 刀具