Tanker maintenance note: 1. Maintenance personnel must not wear chemical fiber clothing and shoes with nails when overhauling the tanker. It is forbidden to use open flames, smoking, use of iron tools or strong electromagnetic field products (such as mobile phones) at the gas station to avoid fire. Everything is under the guidance of the gas station safety officer for maintenance.     2. When overhauling the fuel dispenser, especially the electrical part, the power must be turned off first, and live repairs are not allowed. 3. When overhauling the mechanical part of the dispenser, if the part to be repaired needs to be drained, fuel must be collected in the container to prevent fuel spillage. 4. When repairing the dispenser, be careful not to scratch the metal parts, seals, and sealing surfaces to prevent leakage. Before reassembly, the components must be cleaned to prevent damage to the components. 5. In the maintenance of electrical parts, such as the removal of the line, must pay attention to the connection method (described in detail later), so as not to cause new failures when reinstalled.     6. Before repairing the dispenser, it is necessary to fully understand the fault phenomenon and analyze the cause of the fault to solve the problem. Generally, when it is not determined that a component is bad, no one component should be replaced.     7. If the replacement parts of maintenance personnel affect the metering of the dispenser, replace the dispenser and test the accuracy of the dispenser. · Tanker troubleshooting 1, the gun motor does not turn (1) Failure cause: Three-phase power shortage; Remedy: Check the power supply line (1) Fault cause: The switch board is bad (oil gun light is off); Remedy: Replace the switch board (1) Cause of the fault: The pins of the LCD are not inserted tightly; Remedy: Remove the plug 4, keyboard operation failure (1) Failure reason: A key is not available; Remedy: Change or clean the key particle Sanitary Tubes,Sanitary Butterfly Valve ,Air Line Fittings,Stainless Steel Pipe Fittings Combination & Joint Fittings Co., Ltd. , http://www.nbstainlesspipes.com
(2) The cause of the malfunction: The oil gun switch board is broken (oil gun light indicator is off); Remedy: Replace the oil gun switch board
(3) Fault cause: Burnout of relay contacts on the driver board; Remedy: Check and replace the driver board
(4) Failure cause: Motor coil burned; Remedy: Rewind motor coil
(5) Cause of failure: No 5V control signal output from the motherboard; Remedy: Check the motherboard or replace the motherboard.
(6) Cause of the fault: The power board is bad (the power light is not on); Remedy: Check the power board or change board
2, can not stop the motor after shutting the gun
(2) The cause of the failure: The motherboard 5V control signal is not joint; Troubleshooting: Maintenance and replacement of the motherboard
(3) Cause of failure: Burning of the drive board relay contact; Remedy: Replace the drive board or relay
3, display LCD missing strokes
(2) Cause of the fault: Damage to the LCD panel; Remedy: Change the LCD panel
(3) Cause of fault: Welded circuit board display board; Remedy: Try re-welding
(4) Failure cause: The display board is bad; Remedy: Change the display board
(2) Cause of failure: A line or column does not work; Remedy: Loose or broken line
(3) Failure cause: All keys are not available; Remedy: Electronic lock is not turned off;
(4) Failure cause: The display board is bad; Remedy: Change the display board