A、A.the relief valve should open before the high-pressure cutout
B、B.the relief valve should open and let excess refrigerant go to receiver
C、C.the high-pressure cutout switch should operate before the relief valve opens
D、D.close in on the suction valve
更多“If the head pressure is too high,（）”相关的问题
A、purge the condenser if the waterside is dirty B、check for proper water flow through the condenser C、increase the high pressure cutout setting D、reduce the cooling water flow
A、A.the relief valve should open before the high pressure cutout B、B.the relief valve should open and allow the excess refrigerant to flow to the receiver C、C.the high pressure cutout switch should operate before the relief valve opens D、D.you should close in on the suction valve
A、Suction head B、Pump head C、Discharge head D、Total head
A、check cylinder lubrication B、connect the pressure indicator pressure C、test cylinder heads D、connect the exhaust gas pyrometers
A、insufficient speed B、cavitation C、excess discharge pressure D、excessive net positive suction head B
A、the compressor short cycling on high pressure cut out switch B、high suction pressure C、high head pressure D、bubbles in the sight glass
A、turning the victims's head to the side to keep his airway open B、positioning the victim so the head is lower than the body C、giving the victim water if he is thirsty，but no food D、elevating the head and shoulders slightly with a pillow
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