Centrifugal pump troubleshooting: (i) Preparation before starting 1. Hand to dial the motor blades, the impeller should be no card grinding phenomenon, flexible rotation. 2. Open the inlet valve, open the vent valve to allow the fluid to fill the entire pump chamber, and close the vent valve. 3. Hand pump pump so that the lubricating liquid into the mechanical seal face. 4. Move the motor to determine the steering is correct. (Ii) start and run 1. Fully open the inlet valve, close the discharge pipe valve. 2. Turn on the power, when the pump reaches the normal speed, then gradually open the valve on the discharge pipe and adjust to the required conditions. 3. Observe the instrument readings, check the shaft seal leakage, the normal mechanical seal leakage, <3 drops / min, check the motor, the bearing temperature ≤ 70 degrees C, if abnormal circumstances should be promptly addressed. (Iii) parking 1. Gradually shut down the valve discharge pipe, cut off the power. 2. Close the inlet valve. 3. If the ambient temperature is below 0 degrees C, the pump liquid should be depleted to avoid cracking. 4. If the long-term disabled, the pump should be disassembled and cleaned, packed and stored.
Galvanized Roller Shutter Door
Using advanced hot-dip galvanized material , precision roll forming production process, polyurethane foam that free of hydrofluorocarbon inside door, light weight, high strength, appearance nice. The doors have advantages of tamper anti-theft , noise isolation thermal insulation and corrosion resistance;the doors are widely used in shops, garages, houses, supermarkets, warehouses and industrial plants,etc.
Depending on the characteristics of the buildings,we can choose interior, exterior and intermediate three different installation ways, doors stay in the upper part of door after rolling up , this could save garage space, and also could keep the garage clean and beautiful by prevent the mud, rain and snow ,etc going into the garage.
Galvanized Roller Shutter Door,Standard Galvanized Roller Shutter Door,Automatic Galvanized Roller Shutter Door,Steel Roller Shutter Safe Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com