INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
ELECTRONIC VOLTAGE REGULATED BRUSHLESS GENERATOR
INTRODUCTION
Thank you for choosing a MARATHON ELECTRIC PANCAKE Generator. Please read the installation and service
sections of this manual carefully. A clean environment and proper installation are critical to generator performance. If
you have any difficulty in installing or servicing your Marathon Generator, our service and technical staff will be happy
to help you. We are confident that by following these guidelines, you will get many years of reliable service from your
Marathon generator.
General Data
Construction: Brushless, Revolving Field
Number of Poles: 4
Frequency: Frequency is model specific. Consult the generator name plate or the factory for
your generator’s designed frequency.
Synchronous Speeds: 60 Hz – 1800 rpm or 50 Hz – 1500 rpm
Cooling: Fan cooled
Enclosure: IP22
Max. Ambient Temp: 40°C
Insulation Class: (See generator nameplate)
Initial Inspection
Your Marathon Pancake generator has been carefully inspected and tested before leaving the factory. However, it
is wise to examine the generator before installation. Carefully unpack and examine the unit. If there is any shipping
damage, file a damage claim with the shipper or agent immediately. Save all packing materials for inspection by agent.
SAFETY
PLEASE REMEMBER SAFETY FIRST. If you are
unsure of the instructions or procedures contained in this
manual, seek qualified help before continuing. WHEN IN
DOUBT, ASK.
This manual emphasizes the safety precautions
necessary during the installation, operation, and
maintenance of your Pancake generator. Each section
has caution and warning messages. These messages
are for your safety and the safety of the equipment
involved. If any of the cautions or warnings are not readily
understood, seek clarification from qualified personnel
before proceeding.
Before any service work is done, disconnect all
external power sources and, where appropriate, lock
out all controls to prevent an unexpected start‑up of
the generator set driver. Proper grounding (earthing)
in compliance with local and national electrical
codes and standards must be provided. These safety
precautions are necessary to prevent potential
serious personal injury or even death.
The hazards associated with lifting or moving your
generator are pointed out in the installation and service
sections. Incorrect lifting or moving can result in personal
injury or damage to the unit. Prior to start-up of the unit,
insure that all generator leads are properly connected
and insulated.
Always assume that there will be voltage present at
the generator terminals whenever the generator’s
shaft is rotating, and proceed accordingly. Residual
voltage is present at the generator terminals, and at
the automatic voltage regulator panel connections,
even with the regulator fuse removed. Caution must
be exercised, or serious injury or death can result.
This manual is not intended to be a substitute for properly
trained personnel. Installation and repairs should only
be conducted by qualified, trained people. The cautions
and warnings point out known conditions and situations
that are potentially hazardous. Each installation may well
create its own set of hazards. No manual can cover every
possible situation.
INSTALLATION
Location/Environment
The engine-generator set must be installed in a protected
environment with minimal exposure to fumes, moisture,
dust, and dirt. THE AMBIENT AIR TEMPERATURE
MUST NOT EXCEED 40°C (104°F) FOR CONTINUOUS
DUTY WITHOUT A RECOMMENDED REDUCTION IN
RATING.
2
To Next Page
Loading...