No. |
Failure |
Cause analysis |
Troubleshooting |
1 |
PTO can not be put into gear |
Air pressure is insufficient, air pipe is leaky |
Replace the air pipes |
Electrical switch is damaged |
Replace the switch |
||
Solenoid valve is damaged |
Replace the solenoid valve |
||
2 |
Decelerator cannot be put into gear |
Air pressure is insufficient, air pipe is leaky |
The same with item 1 |
Electrical switch is damaged |
The same with item 1 |
||
Solenoid valve is damaged |
The same with item 1 |
||
The small cylinder is damaged or the connector is off |
Replace the small cylinder or install the connector |
||
Automobile clutch is not completely separated |
Adjust the automobile clutch |
||
3 |
Asphalt pump is not rotating |
Hydraulic system is failed |
Exclude the failures of the hydraulic system |
Solid blockage |
Dismantle the asphalt pump and take out the solids |
||
Asphalt gets stuck |
Diesel cleaning and exhaust baking |
||
4 |
Hydraulic motor is not running or speed is slow |
Overflow valve is stuck and the pressure is low |
Dismantle and wash the overflow valve, and re-adjust the pressure |
Selector valve coil has no electricity or is burnt out |
Check the circuit or replace coils |
||
High oil temperature, no pressure |
See 5 |
||
Hydraulic pump or motor is badly worn |
Replace the hydraulic pump or motor |
||
5 |
Hydraulic oil temperature is high (above 85°C) |
Hydraulic oil is too little |
Refill hydraulic oil |
Asphalt pump resistance is too big, the overflow valve has a long-term oil leakage under high pressure |
Check the asphalt pump and overflow valve
|
||
Oil suction filter is blocked |
Clean filter |
||
6 |
Burner is not ignited |
No power |
Check the switches inside the generator, temperature control box |
The filter is too dirty, and pipeline is blocked |
Clean filter and blow oil pipe with high pressure air |
||
The burner has carbon deposit or is blocked |
Dismantle and wash the burner |
||
Wear oil pressure of oil feed pump is too low |
Replace the burner and oil feed pump |
||
7 |
Asphalt pump is operating normally without spraying asphalt |
Asphalt valve position is incorrect |
Adjust the valve position according to section III (five) |
Oil suction port is blocked with asphalt |
If hot asphalt is used, please wait for self-melting or use the heat-conducting oil for heating |
||
Asphalt filter is blocked |
Take it out for cleaning |
||
Oil pipeline is blocked with asphalt |
Use the heat-conducting oil for heating, baking or dredging |
||
8 |
Spray pressure is insufficient or intermittent |
Asphalt filter screen is blocked |
Cleaning |
Filter cover has air leakage |
Seal and cover tightly |
||
The main pipe air valve is not closed tightly |
Close tightly |
||
Asphalt temperature is too low |
Heat asphalt to the specified temperature |
||
Oil return valve (No.7) is not closed tightly |
Close the oil return valve (No.7) tightly |
||
Asphalt pump is badly worn |
Repair or replace the asphalt pump |
||
Hydraulic system works unsteadily |
Check the hydraulic system |
||
Control system is failed |
Check the measured pump speed and voltage |
||
9 |
Asphalt spraying is uneven |
Spray pressure is insufficient |
Check and adjust according to the contents in above column |
Nozzle is blocked with impurities |
Clean the impurities |
||
10 |
Self-suction filling asphalt does not work |
Asphalt oil inlet valve is not closed tightly, and the oil return valve (No.7) is not opened |
Inspect valve |
Filter cover has air leakage |
Seal and cover tightly |
||
The main pipe air valve is not closed tightly |
Close tightly |
||
Asphalt temperature is too low |
Heat asphalt to the specified temperature |
||
Self-suction pipe connector has air leakage |
Add gaskets and compress them |
||
Asphalt storage tank is too far or too low |
Change the condition, or prohibit self-suction |
||
11 |
Heat-conducting oil overflows |
Heat-conducting oil is too full |
Reduce the heat-conducting oil |
Heat-conducting oil system has water inflow |
Heating, dehydration |
||
The newly added heat-conducting oil has a different grade or the moisture content is too high |
Replace the heat-conducting oil |
||
12 |
Asphalt pump has asphalt seepage |
The filler at the journal is worn |
Twist inward the nut or add coil rope as appropriate |
The above table is for reference only. If you cannot correctly judge the failure and exclusion, please consult our service department.