INTRODUCTION
US / Whisper 7/9.5/15/20 Ultra for mobile applications / May 2009 / Copyright © 2009 Mastervolt 3
1 INTRODUCTION
1.1 GENERAL
This installation manual applies to the installation of
Mastervolt Whisper gensets in vehicles. This manual is
valid for the following models:
Part number Description
51105025 Whisper 7 Ultra 120/240V 1800rpm
Mobile / keel cooling
51106025 Whisper 9.5 Ultra 120/240V 1800rpm
Mobile / keel cooling
51107025 Whisper 15 Ultra 120/240V 1800rpm
Mobile / keel cooling
51108025 Whisper 20 Ultra 120/240V 1800rpm
Mobile / keel cooling
For other models see our website: www.mastervolt.com
WARNING
A warning symbol draws attention to special
warnings, instructions or procedures which, if
not strictly observed, may result in damage or
destruction of equipment, severe personal
injury or loss of life.
DANGER
This danger symbol refers to electric danger
and draws attention to special warnings,
instructions or procedures which, if not strictly
observed, may result in electrical shock which
will result in severe personal injury or loss of
life.
WARNING!
Before working (installation) on the system
read the section safety instructions in the
user’s manual
1.2 GENERATING SETS FOR VEHICLES
1.2.1 Marine and mobile generators
Whisper Generators originate from the marine sector. But
there are also specially designed Whispers available for
mobile applications, suitable for supplying power on board
of vehicles to use professional apparatus and equipment,
strong lightning and air conditioning etc. The cooling
system and exhaust system on vehicles is completely
different from standard marine systems. Standard marine
generators are cooled by seawater that nowhere exceeds
86° Fahrenheit (30°C) and is seldom warmer than 68°F
(20°C) in the northern territories. Cold seawater is pumped
through the alternator, through the heat exchanger and is
injected in the exhaust. The exhaust gasses are therefore
cooled and rubber exhaust hose can be used.
On vehicles the engine and alternator are individually
cooled by radiator with an electric (12V/24V or 120V)
driven fan. The radiators can be fitted below, on top or in
the side of the vehicle.
The exhaust is of the dry type and includes a stainless
flexible bellow and high quality mufflers.
Never use rubber exhaust hose, neither
fibreglass nor plastic exhaust parts in a dry
exhaust system as applied on vehicles.
Figure 1: Typical vehicle application radiator side mounted
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