3
GEA30580_Rev_11.15
Foreword
A blower is a precision engineering product with
very fine clearances between the twin impellers and
between the impellers and the casing� As there is no
contact between the moving parts internal lubrication
is unnecessary� This ensures that relatively oil free air
is delivered at all times�
Warning
It is essential that anyone involved in the instal-
lation and operation of positive displacement air
blowers, must have read and understood these
instructions. There is a risk of damage and injury
resulting from improper handling and operation.
Safety Precautions
For equipment covered specifically or indirectly in
this instruction book, it is important that all personnel
observe safety precautions to minimize the chance
of injury� Among many considerations, the following
should particularly be noted�
• Do not use V-belt drive�
• Blower casing and associated piping or acces-
sories may become hot enough to cause major
skin burns on contact�
• Operate blower only per nameplate ratings and
limits listed in this manual�
• Internal and external rotating parts of the
blower and driving equipment can produce serious
physical injuries� Do not reach into any opening in
the blower while it is operating, or while subject to
accidental starting� Cover external moving parts
with adequate guards�
• Disconnect power per lock out tag out procedure
before doing any work and avoid bypassing or
rendering inoperative any safety or protective
devices�
• If blower is operated with piping disconnected,
place a course screen over the inlet, jet port and
discharge� Avoid standing in the path of the air
streams� Wear appropriate PPE�
• Stay clear of open piping�
• Stay clear of blast from pressure relief valves and
the suction area of vacuum relief valves�
• Avoid extended exposure in close proximity to
machinery that exceeds safe noise levels�
• Use proper care and good procedures in handling,
lifting, installing, operating and maintaining the
equipment�
• Casing pressure must not exceed 25-PSI (172 kPa)
gauge� Do not pressure vented cavities from an
external source, nor restrict the vents�
• Do not use air blowers on explosive or hazardous
gases or liquids�
• If condensate or water can collect in blower casing,
must drain prior to start�
• Other potential hazards to safety may also be
associated with operation of this equipment� All
personnel working in or passing through the area
should be warned by signs and trained to exercise
adequate general safety precautions�
GEA30580 Roots 827 DVJ IOM Manual_rev.02.16.indd 3
15/02/2016 12:15:34
