The water temperature gauge is used to measure the temperature of the cooling water at the outlet pipe of the diesel generator's cylinder head and is an important accessory of the unit. This gauge can promptly reflect the water temperature of the cooling system and help understand the temperature of the cooling water when the diesel generator set is operating, enabling the diesel generator set to work at a normal temperature. The water temperature gauge can intuitively display the temperature of the water in the engine water tank, ensuring that the engine operates within an appropriate temperature range. Both excessively high and low water temperatures can affect the engine's performance. The water temperature gauge assembly consists of a sensor, a sensing wire, and a dial. The sensor is installed on the outlet pipe of the cylinder head, and the dial is installed on the instrument panel, with the two connected by a sensing wire.
It is most ideal for the cooling water temperature to be between 156°F and 195°F [74°C and 91°C]. At this time, the working parts of the engine expand uniformly, thus achieving the optimal oil - film clearance. The maximum temperature of the engine coolant must not exceed 200°F [93°C].
In both winter and summer, a thermostat must be installed in the diesel engine. Avoid long - term idling and take necessary steps to keep the cooling water temperature at a minimum of 165°F [74°C]. In cold climate conditions, if necessary, use radiator shutters to cover part of the radiator to prevent over - cooling.
Analysis of the fault of the water temperature gauge showing an excessively high temperature: Generally, cooling system faults mainly include liquid leakage, insufficient coolant, radiator fan malfunctions, and circulating water pump malfunctions.
From the above introduction, we know that the engine coolant temperature is neither the lower the better nor the higher the better; it needs to be within a certain range. After the diesel generator set is started, the temperature of the antifreeze rises rapidly. After the pointer reaches the central position, the heat exchange reaches a balance and the antifreeze temperature no longer rises. Generally, it is best to start when the temperature reaches the middle position, which is why the generator set needs to be pre - heated before starting. A 200kW Cummins generator set should be pre - heated before being powered on and started, just like a car before starting. For a 200kW Cummins generator set equipped with a pre - heater, whether to perform pre - heating operations can be determined according to the ambient temperature. The control panel with a pre - heating button can control the engine's starting heater to work to achieve the purpose of pre - heating.
The above is the introduction to the functions of the water temperature gauge for the 200kW Cummins diesel generator set, compiled by Dingbo Power, a generator manufacturer. Our company's Cummins generator sets are equipped with high - performance Cummins diesel engines and Stamford generators. They feature a Zhongzhi all - Chinese liquid crystal display module, which encompasses all the functions and configurations of a manual control panel, including automatic, stop, and manual operation modes.
There is a start - up delay function. The protection system is designed to trigger an alarm and shut down the generator in case of issues such as "overspeed, high water temperature, low oil pressure, under - frequency, phase loss, overload, start - up failure, output voltage malfunction, charging failure", etc. An emergency stop button is also provided.
Thanks to the excellent overall technical design, the production and assembly of these generator sets meet the technical requirements of international standards. They offer advantages such as more convenient operation, higher efficiency, lower fuel consumption, longer service life, and low - carbon environmental friendliness. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.
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