Metering pump common faults and treatment methods

First, the motor can not start the cause of the malfunction: 1, no power supply. 2, power one phase or two phase power. Approach: 1, check the power supply situation. 2, check the fuse and contactor contacts are good. Second, do not drain or lack of drainage Fault causes: 1, the suction pipe is blocked or suction pipe valve is not open. 2, suction pipe leakage. 3, suction tube is too long, sharp turn more. 4, suction valve or discharge valve surface damage or fall into foreign debris, so that the valve surface is not tight. 5, the diaphragm cavity residual air. 6, fill valve group or diaphragm cavity leaks, oil spills. 7, safety valve, compensation valve does not operate properly. 8, oil system oil impurities, the valve is mat, lax seal. 9, plunger packing leaks seriously. 10, the motor speed is insufficient or unstable. 11, inhalation level is too low. Approach: 1, check the suction tube, filter, open the valve. 2, will leak parts sealed. 3, bold suction pipe to reduce sharp turn. 4, check the valve seal, if necessary, replace the valve, seat. 5, re-oil, exhaust gas. 6, identify the leak site and sealed. 7, readjustment 8, for a clean oil. 9, adjust the packing gland or replace the new packing. 10, stable motor speed. 11, adjust the level of inhalation liquid. Third, the pump pressure can not reach the performance parameters Failure reasons: 1, inhalation, discharge valve damage. 2, plunger packing leak serious. 3, the diaphragm or discharge pipe joints lax. Approach: 1, replace the new valve 2, adjust the packing gland or replace the new packing. 3, find the leak and sealing parts. Fourth, the measurement accuracy to reduce the cause of the malfunction: 1, and No. 2 in 4 to 11 the same. 2, plunger zero offset. Treatment: 1, and No. 2 in 4 to 11 the same. 2, readjust the plunger zero. Fifth, parts overheating Fault reasons: 1, the transmission tank too much or insufficient fuel, oil impurities. 2, various sports lubrication situation is not good. 3, packing pressure too tight. Approach: 1, replace the new oil, the oil suitable. 2, check and clean the hole. 3, adjust the packing gland. Sixth, the pump has a shock noise causes: 1, the sports wear serious. 2, valve lift is too high. Approach: 1, adjust or replace parts. 2, adjust the lift height, to avoid the pump lag.

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Schindler 9300 AE

Schindler 9700


Schindler 9300® AE - The versatile escalator



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