Note: D, B point in any case is the same, part of the thermostatic valve only three interfaces, and D point is directly connected to the B-way pipe. Analysis: At this thermostatic valve to a normal state, the flow of lubricating oil from the oil separator tank A, C points after cooler flow D, B point, the oil in the D, B point of confluence flow oil filter oil purifier, The best purification equipment, and finally back to the nose, so in this case the oil temperature should be A≈C, due to equipment belong to high temperature, solid state temperature control valve is fully open, so D≈B, the best purification equipment, A, C> D, B; 3, check and measure the air compressor cylinder, piston ring wear and damage and assembly, the purification equipment, serious wear and tear should be replaced. 4, for air-cooled compressor part, to: remove the heat sink cumulative oil, soot or unclean thing. To replace damaged parts found; check damaged fins, found damaged parts to be replaced. For water-cooled compressor part, to: examine the appropriate cooling pipe size (recommended minimum pipe diameter 9.5 mm) purifying filter, coolant flow Check the air compressor, adjust the speed of the engine when the minimum allowable The flow rate of 5 liters per minute. If the coolant flow rate is slow, check the cooling pipes and fittings accumulation of rust, kink and constraints. Purification equipment | Xingchang Pneumatic Machinery | purification filters provided by Qingdao Xingchang Pneumatic Machinery Co., Purification equipment | Xingchang Pneumatic Machinery | Filters Qingdao Xingchang Pneumatic Machinery Co., Ltd. (www.xckyj.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Cui Junbo.