1800 Diesel
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- Santa Rosa County, FL
Was attempting to drain the water from one of the units in work--setting up for a cooling system flush. After opening the pet cock, no liquid came out. Pulled the lower hose and then removed the shutter control thermostat housing and found it 95% clogged with mineral deposits of some sort. Not sure if this is from using high-mineral tap water, but have never seen one this bad. See photos below. Lesson here is if you get little or no flow from the opened petcock, investigate further--especially prior to a load test or issuing to the end user.
![Shutter control thermostat housing clog.jpg Shutter control thermostat housing clog.jpg](https://www.steelsoldiers.com/data/attachments/548/548765-e8c8ef73bb157fb9e52d4e1f51db0200.jpg)
![Shutter control thermostat housing clog-2.jpg Shutter control thermostat housing clog-2.jpg](https://www.steelsoldiers.com/data/attachments/548/548766-dc4a80d41b7084d7676d53ec6d90bb5f.jpg)
![Lower radiator hose--MEP-004A.jpg Lower radiator hose--MEP-004A.jpg](https://www.steelsoldiers.com/data/attachments/548/548767-ddebf95483dacc60d9984fd4518fbf9a.jpg)
Even the lower radiator hose was partially clogged with the deposits.
After cleaning the shutter thermostat housing I need to test it and also am searching for a source for both radiator hoses.
![Shutter control thermostat housing clog.jpg Shutter control thermostat housing clog.jpg](https://www.steelsoldiers.com/data/attachments/548/548765-e8c8ef73bb157fb9e52d4e1f51db0200.jpg)
![Shutter control thermostat housing clog-2.jpg Shutter control thermostat housing clog-2.jpg](https://www.steelsoldiers.com/data/attachments/548/548766-dc4a80d41b7084d7676d53ec6d90bb5f.jpg)
![Lower radiator hose--MEP-004A.jpg Lower radiator hose--MEP-004A.jpg](https://www.steelsoldiers.com/data/attachments/548/548767-ddebf95483dacc60d9984fd4518fbf9a.jpg)
Even the lower radiator hose was partially clogged with the deposits.
After cleaning the shutter thermostat housing I need to test it and also am searching for a source for both radiator hoses.