Nissan 90 ~93 free download

File name ac heater system manual.pdf

A/C-HEATER SYSTEM - MANUAL 1993 Nissan Sentra 1993 Manual A/C-Heater Systems NX & Sentra SPECIFICATIONS SPECIFICATIONS TABLE Application Compressor Type ... Zexel DKV-14C Rotary Vane Compressor Belt Deflection New Belt ... 9/32-5/16" (7-8 mm) Used Belt ... 9/32-5/16" (7-8 mm) System Oil Capacity ... 6.8 ozs. Refrigerant (R-12) Capacity ... 23-26 ozs. System Operating Pressures (1) High Side ... 118-166 psi (8.3-11.7 kg/cm ) Low Side ... 27-37 psi (1.9-2.6 kg/cm ) (1) - Measured at ambient temperature of about 77 F (25 C), with 50-70 percent relative humidity. WARNING: To avoid injury from accidental air bag deployment, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in appropriate AIR BAG RESTRAINT SYSTEM article in ACCESSORIES & ELECTRICAL section. A separate evaporator housing assembly is combined with a standard heater core assembly to create an integrated A/C-heating unit. Blower motor directs airflow through evaporator and then heater core, to ducting and outlets. Fan speed is controlled by a dial knob or a slide lever. See Fig. 1. Desired air control mode is achieved by push buttons or levertype controls on A/C-heater control panel. A/C switch and fan controls are independent of mode controls. Slide lever controls temperature setting, and A/C button controls air conditioner operation. Sliding intake lever to the left or pressing air recirculation button will stop fresh air intake and recirculate inside air. ЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎ ЎЎЎЎЎЎЎЎ ЎЎ ЎЎЎЎ Ў ЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎ ЎЎЎЎЎЎЎЎ ЎЎ ЎЎЎЎ Ў DESCRIPTION OPERATION CONTROL PANEL Specification ў ў Ј Ј Fig. 1: Identifying A/C-Heater Control Panel Courtesy of Nissan Motor Co., U.S.A. FUSIBLE PLUG Fusible plug, mounted on receiver-drier, is a high temperature relief valve. When temperature is 221 F (105 C), plug melts to vent refrigerant to atmosphere, thereby protecting the system. FAST IDLE CONTROL DEVICE (FICD) When A/C system is energized, the engine control module signals FICD to adjust Auxiliary Air Control (AAC) valve to by-pass additional air and increase idle speed. This higher idle speed allows engine to idle smoothly during compressor operation. DUAL-PRESSURE SWITCH The dual-pressure switch is mounted on receiver-drier. See Fig. 2. Dual-pressure switch protects A/C system from high pressure build-up due to restriction, overcharge or compressor malfunction. If excessively low or high system pressure is sensed, the switch stops compressor clutch operation. HIGH PRESSURE RELIEF VALVE A high pressure relief valve is located on end