Frequent abnormalities and ways to eliminate them in extremely cold weather. 

Anomalous phenomenon 1: Loss of electricity in the battery

1. Causal analysis

(1) in extremely cold weather, a voltage deficiency in the battery may occur, which leads to a difficult launch or impossibility of starting;

(2) Crystallization of lead sulfate in the electrolyte of lead -acid batteries at low temperatures leads to a decrease in concentration and a decrease in capacity.

2. Preventive measures

(1) timely purification of electrode oxides to avoid poor contact and other situations, you can wash with boiling water after cleaning and applying vaseline protection;

(2) with a long parking of equipment, the battery must be dismantled and saved in the room, and active charging should be carried out regularly;

(3) with a short parking of the equipment, you should pay attention to the shutdown of unnecessary electrical equipment and disconnecting the negative switch after the end of the work;

(4) Every day, attention should be paid to the state of the battery, to track the battery charge through the surveillance opening "Green - normal; gray - a deficiency of electricity; black - damage".

3. Decisions

When the power outage cannot be launched, a common measure is to “restart” using other devices. When connecting, you should pay attention to the following points:

(1) parallel overlap: that is (the flooring device) a positive connection with a positive (connected) pole (overlapping device) Negative connection C (connected equipment) body;

(2) the same voltage: that is, the voltage of the external battery should be the same as that of the device (12V / 24V);

(3) When installing the first positive, the second negative, during dismantling the first negative, the second positive.

Abnormal phenomenon II: “trembling” of the car

In extremely cold weather, there are often cases when the “trembling” movement occurs for some time after the device only starts or starts.

1. Causal analysis

(1) Hydraulic oil at low temperatures increases viscosity, the hydraulic pump inhibits the absorption and removal of the oil, the resistance of the flow in the void of the hydraulic valve increases, so this phenomenon easily occurs;

(2) At the same time, an increase in resistance when launching due to increased viscosity can also lead to difficulties when starting.

2. Preventive measures

The hydraulic system should operate at the right temperature, so a sufficient number of heat engines is necessary before operation.

(1) After starting the engine, work begins on idle for 3 to 5 minutes, and then the gas lifting is performed;

(2) at the beginning of the action, use the action of the full move to accelerate the entire cycle of hydraulic oil;

(3) When moving, first slowly, and then quickly, and then the operation of strangulation.

Anomalous phenomenon III: diesel "wax"

1. Causal analysis

When the labeling of diesel fuel is not suitable for local minimum temperature, it is very likely that the phenomenon of diesel fuel paraffinage leads to a difficult cold launch, a serious and even full speed of blocking the oil pipeline, the equipment cannot be launched.

2. Preventive measures

(1) it is recommended to pay attention to the local weather forecast, with obvious changes in temperature, precautions should be taken, to replace diesel fuel with appropriate marking as soon as possible;

(2) can be mixed with diesel fuel with various numbers, for example, diesel fuel 0 and diesel fuel 35, can improve low -temperature fluidity of diesel fuel 0 to avoid the release of wax crystals;

(3) In addition to paying attention to the labeling of diesel fuel, the national four vehicles should also focus on its quality, the use of informal diesel fuel, high sulfur content, can easily lead to damage to the processing module.

3. Decisions

(1) you can use hot water to “freeze” the fuel system;

(2) you can use a powerful heater to “freeze”;

(3) You can not directly use open fire for baking to avoid fire and other anomalies.