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Damage or failure of a motor due to continued over heating as the result of
incorrect extension cord length/size, incorrect power supply, incorrect
application, and continued overloading is not covered under warranty.
Electrical Trouble Shooting:
The following solutions depend largely on the
total load on the circuit
and
operator
technique
.
The following tips apply to all electrical motors and electrical powered products
regardless of application or manufacturer: 99.99% of machine issues are application
related, that is using the incorrect power supply, extension cords, operator technique, or
using the incorrect blade for the material being cut.
1. Verify the circuit breaker amperage. It is recommended that the circuit breaker
be at least 20A or higher for best performance. 30A will provide the best
performance.
2. Verify that the blade is NOT contacting the ground when starting the unit.
a. The blade should be above the ground when starting the saw.
b. If cleaning an expansion joint make sure that the blade is NOT contacting
the backer rod.
3. Extension Cord - Insure that the cord length and gauge is within the product
requirements. Incorrect cord gauges and lengths kill motors! Incorrect extension
cords create low voltage situations which cause the amperage to increase.
a. The best results will be a 50 foot or shorter 10 AWG or thicker (smaller
gauge number) extension cord set which is in one piece and in good
operating condition.
b. See section “
Power Connections:
” for addition extension cord
information.
4. The voltage range for the GC25E UP saw is 108v to 125v with 115 to 120v being
perfect. Lower than 108v will cause motor overheating, circuit breaker tripping,
and motor failure over time.
a. Verify the voltage at the machine NOT the rated or assume circuit voltage.
b. Low voltage kills motors!!! As voltage drops amps go up as amps go up
the internal temperature of the motor increases.
5. Verify the total load on the circuit. If above 15 amps move other equipment to
another, separate circuit. The GC25E UP saw pulls 7 to 8 amps with NO load,
as a load is applied the amp drawing will climb. Under full load (the point where
the motor starts to stall, it will draw 18A or more. The issue comes from the
circuit being over loaded (much greater than 15A for a long time, the exact trip
value will depend on the circuit breaker, age of breaker, and how many times it
has been tripped before).
a. If possible use a 20 amp circuit.
