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Why is there insufficient cooling in cold storage construction?
Cold storage construction takes a long time, and often encounters a situation in which the temperature is slowly cooled. In the final analysis, it is the performance of insufficient cooling capacity. So, do you understand why there is insufficient cooling in the cold storage construction? Let’s listen to the experience summarized by Zhongshan Kovat:
1. The suction filter is clogged, the suction pressure loss is too large, the suction pressure is decreased, and the volumetric efficiency is lowered: the filter of the suction filter is removed for cleaning.
2. The position of the spool valve is not suitable or other faults: check the indicator and adjust the position check valve.
3. The machine is not properly worn, causing the gap to be too large: adjust or replace the parts.
4, the suction pressure is lower than the evaporation pressure: check the valve (such as suction shut-off valve or check valve, etc.)
5. Leakage between high and low voltage systems; check the bypass lines used for driving and parking.
6. Insufficient fuel injection, can not achieve sealing effect: check whether the safety valve is sealed, check the oil circuit, oil pump, oil filter, and increase the oil quantity.
7. The exhaust pressure of the machine is much higher than the condensing pressure, and the volumetric efficiency is reduced: check the exhaust system piping and valves to remove the resistance of the exhaust system. If the system infiltrates air, it should be excluded.
Exhaust method for lubricating oil pressure too low (piston machine):
1. The gap between each shaft is too large or some oil passages are leaking: check and repair.
2. The oil pump is too large and worn: check for repair or replacement. 3. Insufficient oil in the crankcase: add lubricating oil.
4. The oil filter is clogged: remove and clean.
5. The oil pressure regulating valve fails: check and repair.