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PowerTech PTS-15T-3 Manual

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OPERATING INSTRUCTIONS
for
SUB-ZERO CONDITIONS
To operate a Power Technology Stand-By Generator System in sub-zero climates, advanced
preparations to the Coolant System, Lubricating System, and Fuel System are essential. Start-up and
Operating Procedures also require special consideration. The following is a list of procedures which
Power Technology highly recommends before operating a Stand-By Generator System under extreme
cold conditions.
COOLANT SYSTEM
Perform a visual inspection of the coolant system components and connections for signs of
leakage, repair or replace as needed. Completely drain coolant from the system into a container for
proper disposal. Flush system with clean water or use a commercially available radiator flush if
necessary to remove deposits. Excessive build-up may require professional cleaning by a radiator shop.
Also remember to clean away dirt and debris from the outside of the radiator. Use running water to clean
dirt particles from between the fins. Never use a hard object to clean the radiator core.
Extreme cold will cause rubber products to become hard and brittle. Inspect hoses and belts for
signs of cracking and wear, replace as needed.
To refill the coolant system, premix a 50/50 solution of Ethylene Glycol and distilled water.
Following the Engine Manufacturers Manual fill the system to the recommended level and test run the
engine to purge any trapped air. Recheck the coolant level and top off as needed.
NOTE: Use a Spectrometer to test and confirm the proper protection level of the coolant solution.
A Hydrometer tester may be unreliable and should not be used.
Optional Coolant System Heater
: Installing a coolant heater in a Stand-By Generator System will
facilitate cold climate starting. These heaters are available in several configurations, including size,
supply voltage and output wattage. Operating on the Thermosyphoning principle the coolant heater
draws cold coolant from the lower engine block, heats the coolant, which rises and returns to the top of
the engine thus circulating heated coolant throughout the engine. Coolant heaters are available in several
thermostatically regulated ranges, also the heating element is protected by an overheat thermostat.
To turn the coolant heater ON or OFF it may be wired into an oil pressure switch, which will turn OFF
the heater when the engine starts and maintains oil pressure and back ON when the engine stops and oil
pressure drops.
LUBRICATING SYSTEM
When operating a Stand-By Generator System in a sub-zero environment adhering to the Engine
Oil Maintenance Schedule is crucial. Using the proper Viscosity and Grade of motor oil is extremely
important as is installing an oil filter approved by the Engine Manufacturer. Incorrect oil viscosity and
inferior grade filters may restrict oil flow through the engine during extreme cold conditions causing
harmful wear to internal engine components.
Use high quality Multi-Viscosity oil, which meets or exceeds API specifications CD/CE or CF4.
For temperatures (–20°C) 4°F and above use 5W-30 viscosity.
For temperatures (–20°C) 4°F and below use 5W-20 viscosity.
2
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