How do small tanker maintenance measures

A combination fuel hand pump dispenser is only suitable for small underground tanks, such as the use of high tank, exhaust pipe Maoyou phenomenon occurs, then make sure the exhaust pipe blocked.
2. Maintenance of electrical parts must be cut off the power, should not live overhaul. Do not damage the surface when you open the explosion-proof box. Intraluminal foreign body should clean dust explosion at a clean re-install the cable should be well sealed, metal pads, gaskets can not be lost, not the number of missing screws, tighten and reliable performance to ensure proof electrical components.
3. To avoid the use of oil gun oil filler pipe percussion gun is not normal operating oil container, such as by pressing the switch, to avoid damage to the oil gun, causing oil spills. Regularly check and tighten the stop screws on the injection tubing, injection tubing to prevent the roots loose, damaged.
4, the relief valve on the machine pumps and manual gas pump combination on the adjustment screw for adjusting the pressure of the pump, thereby regulating the discharge of small oil tanker. Has been adjusted at the factory. After long-term use, such as the discharge of oil dropped, the adjustment screw can tighten inward to increase the pump pressure, but not more than 0.3MPa, the exhaust oil to meet the requirements.
5, underground storage tanks be cleaned regularly to keep the oil clean.