r
ROOTS
$2.00
INSTRUCTIONS
ROTARY
LOBE
BLOWERS
CONTENTS
NUMBERS
IN
( )
ARE
METRIC
EQUIVALENTS
INFORMATION SUMMARY
...........
This page
Receiving
...
Installing
...
Operating
OPERATING CHARACTERiSTiCS
.............
2
Description
...
Control
...
Protection
OPERATING LIMITATIONS
..................
2
Pressure
...
Temperature
...
Speed
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . .
..
3
Mounting
...
Aligning
...
Piping
LUBRICATION
.............................
6
Oil System
...
Sealing
...
Servicing
OPERATION
...............................
6
Starting
...
Checking
...
Running
TROUBLE
SHOOTING
.......................
7
Capacity
...
Power
...
Heating
SAFETY PREACUTIONS. . . . . . . . . . . . . . . . . . .
..
8
Physical
...
Operating
...
General
MAINTENANCE/REPLACEMENTS
............
8
Servicing
...
Repairs
...
Clearances
PARTS
DRAWiNGS
.........................
13
DISTRIBUTORS
............................
20
DO
THESE
THINGS
....
To
Get
The
Most
From
Your
Roots
Blower
IICheck
shipment for damage in transit. After filing
claim with carrier, notify nearest
Sales Office or factory.
ElUnpack
shipment carefully
and
check contents
against
Packing List. Notify Sales Office or factory if a
shortage appears.
BlStore
in a clean,
dry
location until ready for
installa~
tion, if possible. Lift
by
methods discussed under IN-
sTALLATION
to
avoid straining or distorting
the
equip-
ment. Keep covers on all openings. Protect against
weather
and
corrosion
if
outdoor storage is necessary.
LIMITATIONS
and
INSTALLATION sec-
tions in
this
manual and plan
the
complete installation.
If
supervision
by
a Service Engineer is needed, contact
the
nearest Dresser
Parts
and
Service Center
at
least two
weeks in advance
and
confirm
by
your purchase order.
Standard
charges
will
be made.
IDProvide
for adequate safeguards against accidents
to
persons working on or near equipment during
both
in-
stallation
and
operation. See PRECAUTIONS.
iii
Install all equipment correctly. Foundation design
must
be adequate
and
piping carefully done. Use recom-
mended accessories for operating protection.
IiIMake
sure
both
driving and driven equipment is cor-
rectly lubricated before start-up. See LUBRICATION.
'::1 Read
starting
check points under OPERATION. Run
equipment briefly to check for obvious faults, and make
corrections. Follow with a trial
run
under normal
operating conditions.
mIn
the event of trouble during installation or opera-
tion of a new unit, do not
attempt
repairs. Notify nearest
Sales Office or factory, giving all nameplate information
plus
an
outline of operating conditions
and
a description
of
the
trouble.
EUnits
out
of warranty may be repaired or adjusted
by
the
owner.
It
is recommended
that
such work be limited
to
the
operations described in this manual, using Factory
Parts. Good inspection
and
maintenance practices should
reduce
the
need for repairs. See Distributor List on
last
page for
parts
and
service after warranty period.
NOTE - Information In this manual is correct as
of
the date
of
publication. The Manufacturer reserves the right to make design or material changes without notice,
and
without
obligation to make similar changes on equipment
of
prior manufacture.
Bulletin IRB-115-387
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