Lower Radiator Hose Heater Option - Use And Maintenance; Troubleshooting The Lights - Generac Power Systems MAGNUM MTT15 Operating Manual

LOWER RADIATOR HOSE HEATER OPTION - USE AND MAINTENANCE

Improper use of the lower radiator hose heater could result in damage to the engine or
personal injury. Do not modify the location of the lower radiator hose heater.
The following points should be followed when operating a unit equipped with a lower radiator hose heater.
• Ensure the cooling system is full of the proper mixture of water and engine coolant before each heater use.
• The heater is designed for all-night operation, however, 2-5 hours of heating just prior to starting is usually
sufficient for proper engine starting.
• The unit must be level to maintain proper orientation of the heater while it is in operation.
• Use only an undamaged, outdoor rated, three-prong grounded 120VAC extension cord with a minimum
amperage rating of 10A. Connect the cord to a properly grounded 120VAC, GFCI receptacle.
• Before starting the engine, unplug the extension cord from the power first, then unplug the heater cordset
from the extension cord.

TROUBLESHOOTING THE LIGHTS

THIS UNIT USES HIGH VOLTAGE CIRCUITS CAPABLE OF CAUSING SERIOUS
INJURY OR DEATH. ONLY A QUALIFIED ELECTRICIAN SHOULD TROUBLESHOOT
OR REPAIR ELECTRICAL PROBLEMS OCCURRING IN THIS EQUIPMENT.
MAST LIGHTS OFF BUT BALLAST INDICATORS ON CONTROL PANEL ARE ON
1. Mast light is too hot. Allow light to cool 10-15 minutes before restarting.
2. Faulty bulb connection. Check that the bulb is tight in the socket.
3. Bulb broken. Check for broken arc tube or outer bulb jacket, broken or loose components in bulb envelope
or blackening/deposits inside tube.
4. Check the connections inside the mast junction box and each mast light housing/socket.
5. Check the mast electrical cord for damage and check the cord connections inside the control box.
MAST LIGHTS OFF AND BALLAST INDICATORS ON CONTROL PANEL ARE OFF
1. Check the connections inside the control box and inside each ballast box.
2. Generator output incorrect. Check the incoming voltage to the ballast by checking the available voltage
on the GFCI receptacle. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, the engine speed
may need to be adjusted or generator may require service.
3. Low transformer output. The voltage from the transformer should read approximately 400VAC as the
light "strikes" (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On quick
disconnect models, measure across the junction box terminals when the light is unplugged. On hard
wired models, remove the mast junction box cover and insert the wire probes into the connector blocks
for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the
capacitor or coil needs to be replaced.
MAST LIGHTS ON BUT THE LIGHT OUTPUT IS LOW
1. Fixture and/or lens is dirty. Clean reflective surface inside fixture and both inside and outside surface of
glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the
glass.
2. Bulb worn due to normal use. Replace bulb.
3. Check the mast coil cord, mast junction box and mast light connections.
4. Generator output incorrect. Check the incoming voltage to the ballast. Incoming voltage should be 120V
+/- 5V. If the voltage is incorrect, the engine speed may need to be adjusted or the generator may require
service.
5. Low transformer output. The voltage from the transformer should read approximately 400VAC as the
light "strikes" (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On quick
CAUTION
DANGER
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