Tuthill 2002 User manual

M-D Pneumatics™
Rotary Positive Displacement Blower
CP Series
Models
2002 3002 4002 5003 6005 7006
2004 3003 4005 5006 6008 7011
3006 4007 5009 6015 7018
Grease Lubrication / Air Service
Splash Lubrication / Air Service
OPERATOR’S MANUAL
Manual 2017 Rev C p/n 2017
Tuthill Vacuum & Blower Systems www.tuthillvacuumblower.com 800.825.6937
WARNING: Do Not Operate Before Reading Manual
Operator’s Manual: Tuthill CP Series Rotary Positive Displacement Blower
Copyright © 2018 Tuthill Vacuum & Blower Systems
All rights reserved. 3roduct inIormation and speci¿cations subMect to change.

Disclaimer Statement:
All information, illustrations and speci¿cations in this manual are based on the latest information available at
the time of publishing. The illustrations used in this manual are intended as representative reference views
only. Products are under a continuous improvement policy. Thus, information, illustrations and/or speci¿cations
to explain and/or exemplify a product, service or maintenance improvement may be changed at any time
without notice.
Rights Reserved Statement:
No part of this publication may be reproduced or used in any form by any means – graphic, electronic or
mechanical, including photocopying, recording, taping or information storage and retrieval systems – without
the written permission of Tuthill Vacuum & Blower Systems.
Copyright © 2018 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and speci¿cations subject to change.

Manual 2017 Rev C p/n 2017 i
Table of Contents
Introduction.................................................................................. 1
Applicable Documentation ................................................................... 1
Scope of Manual................................................................................... 1
Conventions and Data Plate ....................................................... 2
Graphic Conventions in this Manual ..................................................... 2
Data Plate.............................................................................................. 3
Lifting............................................................................................ 5
Description................................................................................... 6
Flow by Direction and Rotation ............................................................. 7
Specifications........................................................................................ 8
Installation...................................................................................11
General ............................................................................................... 11
Location.................................................................................... 13
Foundation................................................................................ 13
Blower Air Intake ...................................................................... 13
Soft Foot ................................................................................... 14
Safety .................................................................................................. 14
Lubrication .......................................................................................... 15
Filling Procedure ...................................................................... 16

Manual 2017 Rev C p/n 2017
ii
Table of Contents
Frequently Asked Questions Regarding Lubrication ............... 17
Hazards Associated With Breakdown or
Ignition of Lubrication .............................................................. 17
Release Lubricated Bearings –
Grease Lubrication Series Only ............................................... 17
Piping Connections............................................................................. 18
Hazards Associated With Hazardous Process Fluids.............. 18
Blockage or Restriction ............................................................ 18
Motor Drives........................................................................................ 19
Direct Coupled ......................................................................... 19
V-Belts ...................................................................................... 19
Setting V-Belt Tension............................................................... 20
V-Belt Troubleshooting ............................................................. 21
Motor and Electrical Connections....................................................... 22
Operation.................................................................................... 23
General ............................................................................................... 23
Start-Up Checklist............................................................................... 24
Stopping.............................................................................................. 25
Recommended Shutdown Procedure to Minimize
Risk of Freezing or Corrosion ............................................................. 26
Maintenance............................................................................... 27
General ............................................................................................... 27
Regular Maintenance.......................................................................... 27
Spare Parts ......................................................................................... 28
Factory Service and Repair ................................................................ 28
Long-Term Storage ............................................................................. 29

Manual 2017 Rev C p/n 2017 iii
Table of Contents
Disassembly and Reassembly.................................................. 30
Disassembly of Blower ....................................................................... 30
Reassembly of Blower ........................................................................ 33
Adjusting Rotor Interlobe Clearance........................................ 36
Lubrication, Final Assembly and Mounting.............................. 37
Troubleshooting......................................................................... 38
Assembly Clearances................................................................ 40
Torque Chart ....................................................................................... 41
Recommended Lubricants........................................................ 42
Recommended Lubricants for Rotary Blowers
and Vacuum Boosters......................................................................... 42
Special Tool Drawings............................................................... 44
Parts List..................................................................................... 46
Cutaway Drawing for Grease Lubrication / Air Service ...................... 46
Parts List for Model CP Series – Grease Lubrication / Air Service ..... 47
Cutaway Drawing for Splash Lubrication / Air Service ....................... 48
Parts List for Model CP Series – Splash Lubrication / Air Service ...... 49
Declaration of Incorporation..................................................... 51
Warranty – Blower Products..................................................... 52
Operating Data Form / Product Registration........................... 53

Manual 2017 Rev C p/n 2017
iv
Table of Contents

Manual 2017 Rev C p/n 2017 1
CONGRATULATIONS on the purchase of a new
CP Series Rotary Positive Displacement Blower
from Tuthill Vacuum & Blower Systems. Please
examine the blower for shipping damage, and if
any damage is found, report it immediately to the
carrier. If the blower is to be installed at a later
date, make sure it is stored in a clean, dry location
and rotated regularly. Make sure covers are kept
on all openings. If the blower is stored outdoors, be
sure to protect it from weather and corrosion.
CP Series blowers are built to exacting standards
and, if properly installed and maintained, will
provide many years of reliable service. Read
and follow every step of these instructions when
installing and maintaining the blower.
OTE:N Record the blower model and serial
numbers of the machine in the
OPERATING DATA form on the inside
back cover of this manual. Use this
identi¿cation on any replacement part
orders, or if service or application
assistance is required.
APPLICABLE DOCUMENTATION
The applicable documents associated with this
manual are:
• 2006/42/CE – Machinery Directive
• EN 1012-1:1996 - Compressors and vacuum
pumps - Safety Requirements - Part 1:
Compressors
SCOPE OF MANUAL
The scope of this manual and the Declaration of
Incorporation includes the bare shaft rotary positive
displacement blower.
INTRODUCTION
01

Manual 2017 Rev C p/n 2017
2
GRAPHIC CONVENTIONS IN THIS
MANUAL
This manual is the result of a risk assessment
according to the applicable documents referenced
in Applicable Documentation on page 1. The
following hazard levels are referenced within this
manual:
DANGER
!
Indicates a hazardous situation that, if not
avoided, will result in death or serious injury.
WARNING
!
Indicates a hazardous situation that, if not
avoided, could result in death or serious
injury.
CAUTION
!
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
injury.
Indicates a situation that can cause damage
to the engine, personal property, and/or
the environment or cause the equipment to
operate improperly.
OTE:N Indicates a procedure, practice, or
condition that should be followed in
order for the equipment to function in the
manner intended.
CAUTION
!
Read manual before operation
or bodily harm may result.
Attention should be given to the
safety related sections of this
manual.
CONVENTIONS AND DATA PLATE
02

Manual 2017 Rev C p/n 2017 3
02
Conventions and Data Plate
DATA PLATE
WARNING WARNING CAUTION CAUTION
http://www.tuthill.com
Hearing protection
re
q
uired.
Do not touch hot
surfaces.
AS
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READ INSTRUCTION MANUAL BEFORE OPERATION OR BODILY HARM MAY RESULT
Keep body & clothing away
from machine openings.
Do not operate without
g
uards in
p
lace.
REBMUNLAIRESREBMUNLEDOM
Tuthill Vacuum & Blower Systems
4840 West Kearney Street
Springfield, Missouri USA 65803
YEARMAWP
MAX RPM
Figure 2-1 – General Operation and Symbols on Data Plate
The following information is contained on the data
plate:
WARNING
!
Keep body and clothing away
from machine.
During operation, keep body
and clothing away from inlet
and outlet of the blower.
WARNING
!
Do not operate without guards
in place.
CAUTION
!
Hearing protection is required
while the blower is in operation.
Noise levels may reach as high
as 81 dBA.
CAUTION
!
Do not touch hot surfaces.
The upper limit of the blower
operation is 400°F (205°C). Do
not touch the blower while it is
in operation and assure blower
is cool when not in operation.

Manual 2017 Rev C p/n 2017
4
02
Conventions and Data Plate
MODEL NUMBER: The speci¿c model of the blower
SERIAL NUMBER: Unique to each blower
YEAR: Year of manufacture
MAWP: MaximumAllowable Working Pressure
The standard MAWP is per Table 4-2 – Maximum Operating Limits on page
9. The MAWP shall not be exceeded.

Manual 2017 Rev C p/n 2017 5
WARNING
!
The blower must be handled using an
appropriate device such as a fork truck or
appropriate lifting device. See Table 4-1 on
page 8 for approximate weights. Care
should be taken to assure blower does not
over-turn during handling and installation.
LIFTING
03

Manual 2017 Rev C p/n 2017
6
Refer to speci¿c data sheets for Àow capacities
and vacuum capacities.
OTE:N Refer to diagrams in this manual for
proper rotation and orientation in inlet
and discharge.
Tuthill Vacuum & Blower Systems CP Series model
rotary lobe blowers are positive displacement type
units, whose pumping capacity is determined by
size, operating speed, and differential pressure
conditions. Blowers employ rotors rotating in
opposite directions within a housing closed at the
ends by end plates.
The inlet to the discharge is sealed with operating
clearances that are very small. Internal lubrication
is not needed, as there is no moving contact.
Clearances between the rotors during rotation are
maintained by a pair of accurately machined helical
timing gears, mounted on the two shafts extended
outside the air chamber. The intermeshing rotary
lobes are designed to rotate and trap air or gas
between each rotor and the housing. As the rotor
lobes rotate past the edge of the suction port, the
trapped air or gas is essentially at suction pressure
and temperature. Since the blower is a constant
volume device, the trapped air remains at suction
pressure until the leading rotor lobe opens into the
discharge port. The close clearances between the
rotors inhibit back slippage of the trapped volume
from between the rotors, and the trapped volume
is forced into the discharge piping. Compression
occurs not internal to the blower but by the amount
of restriction, either downstream of the blower
discharge port or upstream of the blower inlet port.
Figure 4-1 illustrates the air movement within the
machine. In addition, the machine can operate in
either direction.
Never attempt to control capacity by means of a
throttle valve in the intake or discharge piping.
This will increase the power load on the drive
system, will increase operating temperatures, and
can overload and/or seriously damage the blower.
Likewise, if the possibility exists that Àow to the
blower inlet may be cut off during normal operation
of a process, install an adequate vacuum relief
valve. Apressure-type relief valve in the discharge
line near the blower is also recommended for
protection against cutoff or blocking in this line.
Use check valves on each blower when more than
one blower is connected to a discharge line.
When a belt drive is used, it is possible to adjust
blower speed to obtain the desired capacity by
changing the diameter of one or both sheaves,
or by using a variable-speed motor pulley. In a
direct-coupled arrangement, a variable-speed
motor or transmission is required. Gas blowers can
use bypasses, but some applications may require
additional cooling. If there is a large volume of
high-pressure air or gas downstream of the blower,
a check valve in the piping downstream of the
blower will protect the blower from overspeeding in
a backward direction upon shutdown.
Consult a Tuthill Vacuum & Blower Systems sales
professional if questions arise.
DESCRIPTION
04

Manual 2017 Rev C p/n 2017 7
04
Description
INLET INLET INLET
DISCHARGE DISCHARGE DISCHARGE
Figure 4-1 – General Operation Principle
FLOW BY DIRECTION AND
ROTATION
WARNING
!
Refer to diagrams in this manual for
proper rotation and orientation in inlet and
discharge.
INTAKE INTAKE
DISCHARGE INTAKE
DISCHARGE
HORIZONTAL FLOWVERTICAL FLOW
DISCHARGE
INTAKE DISCHARGE
INTAKE
DISCHARGE
RIGHT DRIVE
CW ROTATION
LEFT DRIVE
CW ROTATION
LEFT DRIVE
CCW ROTATION
RIGHT DRIVE
CCW ROTATION
TOP DRIVE
CW ROTATION
TOP DRIVE
CCW ROTATION
BOTTOM DRIVE
CW ROTATION
BOTTOM DRIVE
CCW ROTATION
DISCHARGEINTAKE INTAKE
INTAKEDISCHARGE DISCHARGE
Figure 4-2 – Flow Direction by Rotation

Manual 2017 Rev C p/n 2017
8
04
Description
SPECIFICATIONS
MODEL
APPROXIMATE OIL CAPACITY1
PORT SIZE MAXIMUM
RPM APPROXIMATE WEIGHT
VERTICAL FLOW HORIZONTAL FLOW
GEAR
END2DRIVE
END3GEAR END2DRIVE END3
2002 3.4 oz
(101 mL) –1.7 oz (50 mL) –1 in. (25 mm) 5,275 41 lb (19 kg)
2004 3.4 oz
(101 mL) –1.7 oz (50 mL) –2 in. (51 mm) 5,275 53 lb (24 kg)
3002 6.0 oz
(177 mL)
4.0 oz
(118 mL)
3.4 oz
(101 mL)
2.5 oz
(74 mL)
1.25 in.
(32 mm) 3,600 78 lb (35 kg)
3003 6.0 oz
(177 mL)
4.0 oz
(118 mL)
3.4 oz
(101 mL)
2.5 oz
(74 mL)
2 in.
(51 mm) 3,600 83 lb (38 kg)
3006 6.0 oz
(177 mL)
4.0 oz
(118 mL)
3.4 oz
(101 mL)
2.5 oz
(74 mL)
2.5 in.
(64 mm) 3,600 113 lb (51 kg)
4002 8.5 oz
(251 mL)
6.4 oz
(189 mL)
5.8 oz
(172 mL)
4.7 oz
(139 mL)
1.5 in.
(38 mm) 3,600 95 lb (43 kg)
4005 8.5 oz
(251 mL)
6.4 oz
(189 mL)
5.8 oz
(172 mL)
4.7 oz
(139 mL)
2.5 in.
(64 mm) 3,600 127 lb (58 kg)
4007 8.5 oz
(251 mL)
6.4 oz
(189 mL)
5.8 oz
(172 mL)
4.7 oz
(139 mL)
3 in.
(76 mm) 3,600 146 lb (66 kg)
5003 18.3 oz
(541 mL)
10.2 oz
(302 mL)
7.1 oz
(210 mL)
5.4 oz
(160 mL)
2.5 in.
(64 mm) 2,850 152 lb (69 kg)
5006 18.3 oz
(541 mL)
10.2 oz
(302 mL)
7.1 oz
(210 mL)
5.4 oz
(160 mL)
4 in.
(102 mm) 2,850 185 lb (84 kg)
5009 18.3 oz
(541 mL)
10.2 oz
(302 mL)
7.1 oz
(210 mL)
5.4 oz
(160 mL)
4 in.
(102 mm) 2,850 222 lb (101 kg)
6005 25.5 oz
(754 mL)
18.0 oz
(532 mL)
16.9 oz
(500 mL)
9.0 oz
(266 mL)
3 in.
(76 mm) 2,350 250 lb (113 kg)
6008 25.5 oz
(754 mL)
18.0 oz
(532 mL)
16.9 oz
(500 mL)
9.0 oz
(266 mL)
5 in.
(127 mm) 2,350 310 lb (141 kg)
6015 25.5 oz
(754 mL)
18.0 oz
(532 mL)
16.9 oz
(500 mL)
9.0 oz
(266 mL)
6 in.
(152 mm) 2,350 456 lb (207 kg)
7006 28.7 oz
(849 mL) –20.3 oz (600 mL) –4 in. (102 mm) 2,050 425 lb (193 kg)
7011 28.7 oz
(849 mL) –20.3 oz (600 mL) –6 in. (152 mm) 2,050 555 lb (252 kg)
7018 28.7 oz
(849 mL) –20.3 oz (600 mL) –8 in. (152 mm) 2,050 675 lb (306 kg)
12il capacities are based on ¿lling Irom dry condition. Less oil may be needed depending on emptiness oIoil reservoir(s) aIter draining. Always ¿ll the
gear housing until oil drips out oIthe oil level hole. Replace plugs in their respective holes. )ollowing this procedure will ensure proper oil level.
2Gear (nd amounts apply to all C3Series blowers.
3'rive (nd amounts apply only to Splash Lubrication models.
Table 4-1 – Specifications

Manual 2017 Rev C p/n 2017 9
04
Description
MODEL MAXIMUM
RPM
MAXIMUM
PRESSURE
DIFFERENTIAL* MAXIMUM VACUUM* MAXIMUM
TEMPERATURE
RISE* MAWP
2002 5,275 12 psi (827 mbar) 16 inch-Hg (542 mbar) 225°F (125°C) 15 psi (1,034 bar)
2004 5,275 7 psi (483 mbar) 16 inch-Hg (542 mbar) 185°F (103°C) 15 psi (1,034 bar)
3002 3,600 15 psi (1,034 mbar) 16 inch-Hg (542 mbar) 210°F (117°C) 15 psi (1,034 bar)
3003 3,600 12 psi (827 mbar) 15 inch-Hg (508 mbar) 180°F (100°C) 15 psi (1,034 bar)
3006 3,600 7 psi (483 mbar) 15 inch-Hg (508 mbar) 170°F (94°C) 15 psi (1,034 bar)
4002 3,600 15 psi (1,034 mbar) 16 inch-Hg (542 mbar) 220°F (122°C) 17 psi (1,172 bar)
4005 3,600 10 psi (690 mbar) 16 inch-Hg (542 mbar) 210°F (117°C) 15 psi (1,034 bar)
4007 3,600 7 psi (483 mbar) 15 inch-Hg (508 mbar) 170°F (94°C) 15 psi (1,034 bar)
5003 2,850 15 psi (1,034 mbar) 16 inch-Hg (542 mbar) 195°F (108°C) 17 psi (1,172 bar)
5006 2,850 15 psi (1,034 mbar) 16 inch-Hg (542 mbar) 195°F (108°C) 15 psi (1,034 bar)
5009 2,850 7 psi (483 mbar) 15 inch-Hg (508 mbar) 160°F (89°C) 15 psi (1,034 bar)
6005 2,350 18 psi (1,241 mbar) 16 inch-Hg (542 mbar) 250°F (139°C) 18 psi (1,241 bar)
6008 2,350 14 psi (965 mbar) 16 inch-Hg (542 mbar) 240°F (133°C) 15 psi (1,034 bar)
6015 2,350 7 psi (483 mbar) 12 inch-Hg (406 mbar) 180°F (100°C) 15 psi (1,034 bar)
7006 2,050 15 psi (1,034 mbar) 16 inch-Hg (542 mbar) 235°F (131°C) 17 psi (1,172 bar)
7011 2,050 10 psi (690 mbar) 16 inch-Hg (542 mbar) 210°F (117°C) 15 psi (1,034 bar)
7018 2,050 6 psi (414 mbar) 12 inch-Hg (406 mbar) 120°F (67°C) 15 psi (1,034 bar)
* Maximum conditions based upon 70°F (21°C) inlet temperature and 14.7 psi (1 bar) absolute inlet pressure.
Table 4-2 – Maximum Operating Limits

Manual 2017 Rev C p/n 2017
10
04
Description
WARNING
!
The maximum pressure differential is based
on the difference between the inlet pressure
and the outlet pressure. The maximum
pressure differential shall not be exceeded.
Exceeding the maximum pressure differential
will cause serious damage to the equipment
and could cause bodily injury.
WARNING
!
The maximum allowable working pressure
(MAWP) is based on the absolute pressure of
the blower housing and is NOT the maximum
allowable pressure differential. Exceeding
the MAWP will cause serious damage to the
equipment and could cause bodily injury.
To permit continued satisfactory performance, a
blower must be operated within certain approved
limiting conditions. The manufacturer’s warranty
is, of course, also contingent on such operation.
Maximum limits for pressure, temperature, and
speed are speci¿ed in Table 4-2 on page 9
for various blower sizes when operated under the
standard atmospheric conditions. Do not exceed
any of these limits.
Specially ordered blowers with nonstandard
construction, or with rotor end clearances
greater than shown in Assembly Clearances
on page 40, will not have the operating
limits speci¿ed here. Contact your
Tuthill Vacuum & Blower Systems sales
representative for speci¿c information.
Special attention must be paid when a blower
has a higher than standard ambient suction
temperature. Special recommendations
for operating parameters and/or additional
cooling may be recommended. Consult the
factory or local representative for appropriate
information.

Manual 2017 Rev C p/n 2017 11
GENERAL
DANGER
!
The blower is not intended to be used
with explosive products or in explosive
environments. The blower is not intended
to be used in applications that include
hazardous and toxic gases. Consult the
factory for support.
DANGER
!
It is the responsibility of the installer to
assure that proper guarding is in place and
compliant with all applicable regulatory
requirements.
WARNING
!
The bare shaft blower can
generate excessive noise.
Methods to reduce the noise
levels by installing inlet and
outlet silencers will be required.
Even with inlet and outlet
silencers, hearing protection
will be required.
WARNING
!
Customers are warned to provide adequate
protection, warning and safety equipment
necessary to protect personnel against
hazards in the installation and operation of
this equipment in the system or facility.
WARNING
!
The standard MAWP is per Table 4-2. The
MAWP shall not be exceeded unless speci¿c
factory testing of the pressure containing
components of the blower has been
performed.
WARNING
!
Table 4-2 states the maximum operating
speed in RPM (rotations per minute) and
maximum temperature. Do not exceed these
limits. The installation of the blower shall
take these critical operating parameters
into account and adequate control features
implemented.
INSTALLATION
05

Manual 2017 Rev C p/n 2017
12
05
Installation
WARNING
!
Upon completion of the installation, and
before applying power, rotate the drive
shaft by hand. It must move freely. If it
does not, look for uneven mounting, piping
strain, excessive belt tension or coupling
misalignment or any other cause of binding.
If blower is removed and still does not move
freely, check inside the blower housing for
foreign material.
Remove the protective covers from the shaft
and inspect for damage.
Carefully check to ensure that no transit damage
has been sustained. If damage has occurred from
shipment, ¿le a claim with the carrier immediately.
Preserve the shipping container for inspection by
the carrier.
In the event that your unit sustains damage
while being shipped to your facility, do not
return it to the factory without ¿rst obtaining
shipping instructions from us.
Do not remove protective covers and plugs until
the connections are complete. Mount the blower on
a Àat, level surface. Use a baseplate that is rigid,
solidly supported, and structurally sound. Shim
under the legs where necessary so that each leg of
the blower supports an equal share of the blower
weight. This is necessary to prevent twisting of
the blower. Make sure the feet rest evenly on the
mounting surface before fastening down. Twisting
or cramping the blower during mounting will
cause rotor contact and binding during operation,
resulting in a condition called “soft foot.” See
Soft Foot on page 14 for further details and
preventative measures.
A blower that is factory-mounted on a base should
not require such adjustments. However, since
the assembly can become twisted in shipping or
installation, check for soft foot after installing the
base. Shims may be needed for alignment. Loosen
the foot hold-down screws to check foot contact
with the mounting surface. Mount the base on a
solid foundation or heavy Àooring, using shims as
necessary at bolting points to prevent warping the
assembly.
Transmission of small operating vibrations to a
support structure may be objectionable in some
applications. Use of vibration isolators or vibration-
absorbing materials can be effective in overcoming
this transmission. To avoid causing distortion, apply
the treatment under the common motor/blower
base or mounting plate rather than directly under
the feet alone.
Make sure piping is accurately squared with the
blower and supported independently. Stress
imparted from incorrectly aligned piping or
mounting will create problems with bearing and
seal life, possibly leading to premature internal
contact. The blower should sit stress free and
evenly on its supporting surface. Take care
to evenly tighten the mounting bolts to avoid
imparting undue stress into the blower. Stress
can be checked in a free state with feeler stock or
veri¿ed on a previously installed blower with the
aid of a dial indicator. Spring or gap should be less
than 0.002 in. (0.05 mm).
Use only clean, new pipe and make certain it is
free of scale, cuttings, weld beads, dirt, or any
other foreign material. To guard against damage
to the blower, make sure that an inlet ¿lter is used.
Clean the ¿lter of collected debris after 3 hours of
operation and periodically thereafter. See Piping
Connections on page 18 for additional details.
Figure 5-1 shows a typical complete installation
of the blower and accessories. Note the absence
of throttle or shut-off valves in both discharge and
intake piping. If it is possible for airÀow to be cut off
in either line, add a pressure and/or vacuum relief
valve. In some installations, it may be desirable to
use only an inlet silencer-cleaner supported directly
from the blower connection. Keep the weight of
accessories and piping to a minimum to prevent
blower casing distortion. If the weight exceeds
10% of blower weight, support the components
independently of the blower and connect them with a
Àexible hose or connectors. The approximate weight
of the blower is listed in Table 4-1 on page 8.

Manual 2017 Rev C p/n 2017 13
05
Installation
AIR FILTER
PRESSURE
RELIEF VALVE
CHECK VALVE
FLEX CONN.
PRESSURE GAUGE DISCHARGE
SILENCER
INTAKE SILENCER
FLOW
FLOW
Figure 5-1 – Typical Blower Installation
A blower may be driven by direct-coupling to
the driver or by V-belt drive for the purpose of
obtaining other speeds within the approved
range. See Motor Drives on page 19 for more
information.
Blowers from Tuthill Vacuum & Blower Systems
are internally and externally treated after factory
assembly and testing to protect against rusting in
normal atmospheric conditions prior to installation.
The maximum period of internal protection
is considered to be 6 months under average
conditions, provided closing plugs and seals are
not removed. Protection against chemical or salt-
water atmosphere is not provided. Avoid opening
the blower until ready to begin installation, as
protection will be quickly lost due to evaporation.
For recommended preparations for long-term
storage (longer than 6 months), see Long-Term
Storage on page 29.
Location
Install the blower in a room or outdoor area that
supplies adequate space and lighting for routine
maintenance. Make sure that indoor installation
areas are well ventilated and kept as cool as
possible, because operating the blower at elevated
temperatures can result in nuisance overload or
temperature shutdowns. An unprotected outdoor
installation is satisfactory only when correct
lubrication for the expected temperatures is
provided, as per Recommended Lubricants on
page 42.
Foundation
The blower does not need a special foundation.
However, it does require a solid, level Àoor and
adequate frame support. Bolt the blower system to
the Àoor and seal any cracks.
Blower Air Intake
To minimize maintenance, supply the blower with
the cleanest air possible. The air must not contain
any Àammable or toxic gases, as the blower will
concentrate these gases. This could result in
damage to the blower and surrounding property
and lead to personal injury or death. Do not block
or restrict the opening of the blower, as the motor
could overheat and fail.
Do not use blowers on explosive or hazardous
gases. Do not exceed the limits described in Table
4-2 on page 9 on performance criteria such as
pressure differential, running speed, and discharge
temperature.
If it is necessary to take air from a remote source,
such as in a vacuum application, make sure the
diameter of the piping is at least equal to the
diameter of the blower inlet. For distances greater
than 20 ft (6 m), enlarge the pipe diameter to
reduce inlet restriction. Excessive restriction will
reduce the ef¿ciency of the blower and elevate its
discharge temperature. The piping used should
also be corrosion-resistant and free of scale and
dirt. Keep the inlet covered to keep out foreign
objects and rain. Vacuum kits are available.

Manual 2017 Rev C p/n 2017
14
05
Installation
Soft Foot
Soft foot is a condition in which one of the blower
feet does not sit Àat on the base. Soft foot is
usually due to irregularities in the surface to which
the blower is mounted. When the bolt on the foot
gets tightened, a slight distortion occurs that can
affect bearing and seal life as well as internal
contact between parts.
ANGULAR
SOFT FOOT
PARALLEL
SOFT FOOT
Figure 5-2 – Illustrations of Soft Foot
1. Place the blower on the base.
2. Check each foot for gaps between the foot and
base (soft foot). Shim as necessary to ¿ll the
gap within 0.002 in. (0.05 mm).
Figure 5-2 shows the two most common types
of soft foot conditions. If either type is present
at a measurement of more than 0.003 in.
(0.076 mm), the blower may fail prematurely.
3. Tighten all bolts.
4. Mount a dial indicator on the base contacting
one foot at 12 o’clock position.
5. Loosen the bolt on that foot. Observe indicator
travel and add shims as needed to reduce
“spring” to less than 0.002 in. (0.05 mm).
Repeat steps 4 and 5 on the remaining feet.
SAFETY
Tuthill Vacuum & Blower Systems recommends
the use of relief valves to protect against excessive
pressure or vacuum conditions. Test these valves
at initial start-up to be sure they are properly
adjusted to relieve at or below the maximum
pressure differential rating of the blower.
DANGER
!
It is the responsibility of the
installer to assure that proper
guarding is in place and
compliant with all applicable
regulatory requirements.
DANGER
!
Internal and external rotating
parts of the blower and driving
equipment can produce
serious physical injuries. The
blower should never be run
with the inlet or discharge
piping removed. If it becomes
necessary to inspect the
rotating parts of the blower or
to change V-belts, be absolutely
sure that all power to the motor
controls has been shut off, the
motor controls are locked out,
and properly tagged before
proceeding.