First, high-pressure water pump
1, the power side
(1) Before operation, the oil level must be checked and controlled. Lubricants must be replaced after the first 30-hour operation of the pump. After every 200 hours oil change time.
(2) All screws must be tightened.
(3) pump in operation, the lubricating oil temperature is not greater than 70 ℃, the medium temperature shall not exceed 55 ℃.
(4) oil change should only be carried out when the oil is still hot, old oil to completely put the net. Crankshaft found in the iron, the application of magnet net absorption, blocking oil plug, and then from the oil injection hole into the hole. Too much oil will increase oil resistance due to oil resistance is too large.
(5) at least once a year to empty the oil, flushing the crankcase with flushing oil, and then inject new oil.
(6) Before each oil change, check where the water may enter the crankcase or oil leak, and check all seals and screws, especially the middle rod seals and plunger packing, if necessary, updated.
2, the hydraulic end
(1) Tighten the screws on the suction and discharge sides.
(2) Regular cleaning of the suction end of the filter.
(3) the suction and discharge valve leakage will reduce the reciprocating pump displacement,
In the long downtime, should be adjusted to check the valve
Seat, seat on the "O" -ring, spool, spring
Wear, replace if necessary.
(4) Pump head bolt mounting and dismounting is carried out as shown in the right figure.
(5) replace the valve seat, the valve core to be coated with molybdenum disulfide lithium grease.
3, stuffing box
(1) with a special tool to tighten the lock nut, check the plunger and the middle rod of the connection is tight, do pay close attention.
(2) leaked seals should be updated.
(3) spare plunger should be coated with anti-rust oil, and protect the moving surface and thread from damage.
Second, the injection pump
1, (1) the user in the use of this product, you must use a clean standard of lubricating oil. Improper use of lubricating oil will seriously damage the power side.
① needle-type structure: the summer HJ-30 # oil (GB443-64)
Winter HJ-20 # oil (GB443-64)
② bearing structure: summer 10W / 30CD oil (GB1122-97)
Winter 15W / 40CD oil (GB1122-97)
(2) the rolling bearing and friction surface coated with ZG-5 calcium-based grease (GB491-65) or two-flow aluminum grease.
(3) the new unit to run 30-50 hours, the crankcase should be replaced within the oil.
(4) the second oil change should not be more than 200 hours, after the oil change as the specific circumstances and found that the oil dirty, discoloration, fuel tank or particles should be immediately replace the oil.
(5) Containing water and deterioration of the lubricating oil can not be used.
(6) stuffing box cooling lubrication system oil grade:
HJ-10 # oil (GB443-64) ~ HJ-20 # oil (GB443-64), is strictly prohibited to use more than 20 # oil. Often check the supply tank, and timely cleaning more than precipitation, so as not to affect the lubrication effect of stuffing box.
(7) always check the sealing parts of the situation, if any leakage, leakage, leakage, should immediately disassemble repair, replacement of damaged seals;
(8) regular inspection of the moving parts of the situation, to ensure that the lubricating components have sufficient oil;
(9) regular checks of various parts of the fasteners are loose, loose bolts can cause damage to parts and endanger personal safety.
(10) attention to whether the moving parts associated with abnormal sound, if blocked should be promptly ruled out;
(11) pay attention to check the reliability of the safety valve to ensure reliable overpressure overflow;
(12) to ensure that the belt tension.