How to tell if refrigeration equipment normal working condition

(1) system within about valve and the equipment in due of State, compressor sucking, and row valve, oil separation device import and export valve, condensation device, and storage liquid device of import and export valve,, are is right opened location; throttle valve open degrees appropriate; the wind machine and the motor running smooth; water circulatory system of pump running normal, no exception sound; water cycle pipeline and the connection at no serious leaking phenomenon; has cooling pipes or cold storage cold machine of cold storage in the, pipes or cold machine disc tube uniform to knot full "dry cream" And joints should not seep of the freon refrigeration system (oil description refrigerant leakage), valves and connections of the ammonia system there should be clear ammonia leakage phenomenon.

(2) the condensing pressure, evaporation and condensation temperature pressure and evaporation temperature corresponding to the evaporation temperature coolingtemperature and pressure requirements, and evaporating pressure compressor suction pressure should be in the running. Condensing temperature and pressure depends on the temperature and flow of cooling medium. Under normal circumstances, for a standard series of refrigeration compressors, condensing pressure not exceeding1.8MPa of R22 and R717 (gauge pressure). Operation, the condensing pressure andcompressor discharge pressure, liquid receiver pressure similar to, if not similar is not normal.

(3) the horizontal shell and tube type condenser cooling water pressure should be above 0.12MPa, and must guarantee the inlet water temperature and amount of water and air cooled condensers should maintain a certain degree of air temperature, air flow and surface wind speed in the wind. Touch the closed shell and tube condenser shell, upper heat lower should be cool. Vertical condenser water inlet temperature is about 2~4℃ range, about leaves, horizontal condenser.

(4) the refrigerant in the liquid level to meet the requirements. Typical reservoir fluidlevel should be at 1/3~2/3 location of liquid level indicator.

(5) automatic automatic oil return pipe for oil separator with oil return, seasonable heat in cold weather, hot and cold cycles for about 1h. Cooling system liquid line filter, solenoid valve coil running should be warm, the temperature difference between the before and after there should be clear, Frost and condensation can appear, or isblocked.

(6) the throttle valve of frost or condensation even, thick frosting are not allowed entrance. When the liquid refrigerant through the throttle valve and hear only dull small sound.

(7) protection device on the device, such as safety valves, bypass valves opening and close flexibly, control devices, pressure controllers, pressure controllers, temperature controllers setting value should be correct and normal. Pressure gauge needle should be stable, flexible pointer. Thermometer indicating correct.