Thanks to the development of today’s science and technology, the marine valves have been greatly improved, with better body strength, strong resistance to abrasion and corrosion and longer service life. Occasionally, however, some unexpected faults would affect the use and health of the valve. How are some common faults and relevant ways to fix it.

1. The device doesn’t work and DCS alarms timeout

Possible causes:

A. The power dead;

B. The main loop lacks of phase;

C. The control loop fails;

Solutions:

A. Check the power supplier and voltage of each circuit;

B. Check if the main circuit phase wire is broke;

C. Check if the switch limited position or the torque switch works normally. Whether the DCS is protected by chain;

2.DCS alarms once upon it is operated

Possible causes:

A. The short-circuit of the main circuit leads to the protective act of the thermal relay or power switch trip;

B. Fails of internal components or body cause excessive torque protection;

C. The electrical equipment's torque control mechanism fails or the torque setting value is too small;

Solutions:

A. Check whether the power switch trip and thermal relay ;

B. Check if the transmission mechanism is stuck;

C. Check the torque setting value;

Through the above analysis, we will have a general understanding of these failures and the corresponding solutions. There will be other faults in marine valves in the future, but as long as we actively analyze these faults, we will finally find a suitable solution.