Tuthill 150 User manual

M-D Pneumatics™
Mechanical Vacuum Boosters
Mechanical Vacuum Boosters
OPERATOR’S MANUAL
Manual 2003 Rev D p/n 2003
WARNING: Do Not Operate Before Reading Manual
Models
150 540 1200 2700
240 720 1600
400 850 2000
Mechanical Splash Lube
Slinger Splash Lube
C-Flange
Operator’s Manual: Tuthill Mechanical Vacuum Boosters
Copyright © 2020 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and specications subject to change.
Tuthill Vacuum & Blower Systems | tuthillvacuumblower.com | 800.825.6937
Original Instructions

Disclaimer Statement:
All information, illustrations and specications in this manual are based on the latest infor-
mation 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 © 2020 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and specications subject to change.

i
Manual 2003 Rev D p/n 2003
Table of Contents
Introduction .................................................................................. 1
Applicable Documentation ................................................................... 1
Scope of Manual................................................................................... 1
Conventions and Data Plate ....................................................... 2
Graphic Conventions Used in this Manual............................................ 2
Data Plate.............................................................................................. 3
Lifting ............................................................................................ 5
Description ................................................................................... 6
Flow by Direction................................................................................... 7
Specifications........................................................................................ 8
Installation .................................................................................. 10
General ............................................................................................... 10
Booster Air Intake..................................................................... 11
Foundation................................................................................ 12
Location.................................................................................... 12
Soft Foot ................................................................................... 12
Safety .................................................................................................. 13
Lubrication .......................................................................................... 14
Filling Procedure ...................................................................... 14
Frequently Asked Questions Regarding Lubrication ............... 16
Hazards Associated With Breakdown or Ignition of
Lubrication ............................................................................... 16

ii
Table of Contents
Manual 2003 Rev D p/n 2003
Piping Connections............................................................................. 16
Hazards Associated With Hazardous Process Fluids.............. 17
Blockage or Restriction ............................................................ 17
Water-Cooling Instructions.................................................................. 17
Cooling Water Connections...................................................... 18
Cooling Water Specifications.............................................................. 18
Motor Drives ........................................................................................ 18
Direct Coupled ......................................................................... 18
V-Belts ...................................................................................... 19
Setting V-Belt Tension............................................................... 19
V-Belt Troubleshooting ............................................................. 20
Motor and Electrical Connections....................................................... 21
Operation .................................................................................... 22
General ............................................................................................... 22
Start-Up Checklist............................................................................... 23
Starting................................................................................................ 24
Operating ............................................................................................ 24
Stopping.............................................................................................. 24
Recommended Shutdown Procedure to Minimize Risk of
Freezing or Corrosion ......................................................................... 25
Maintenance ............................................................................... 26
General ............................................................................................... 26
Regular Maintenance.......................................................................... 27
Spare Parts ......................................................................................... 27
Factory Service and Repair ................................................................ 28
Long-Term Storage ............................................................................. 28
Troubleshooting......................................................................... 29
Assembly Clearances................................................................ 32
Torque Chart............................................................................... 32

Manual 2003 Rev D p/n 2003 iii
Table of Contents
Recommended Lubricants........................................................ 33
Recommended Lubricants for Rotary Blowers and
Vacuum Boosters................................................................................ 33
Parts List..................................................................................... 35
Assembly Drawings................................................................... 44
Models 150 to 400 – Cutaway View .................................................... 44
Models 150 to 400 – Dimensions........................................................ 45
Models 150 to 400 – C-flange – Cutaway View................................... 46
Models 150 to 400 – C-flange – Dimensions ...................................... 47
Models 540 to 720 – Cutaway View .................................................... 48
Models 540 to 720– Dimensions......................................................... 49
Models 540 to 720 – C-flange – Cutaway View................................... 50
Models 540 to 720 – C-flange – Dimensions ...................................... 51
Models 850 to 2700 – Cutaway View .................................................. 52
Models 850 to 2700 – Dimensions...................................................... 53
Models 850 to 2700 – C-flange – Cutaway View................................. 54
Models 850 to 2700 – C-flange – Dimensions .................................... 55
Warranty – Blower Products ..................................................... 56
Operating Data Form / Product Registration........................... 57

Manual 2003 Rev D p/n 2003
iv
Table of Contents

Manual 2003 Rev D p/n 2003 1
CONGRATULATIONS on the purchase of a new
Mechanical Vacuum Booster from Tuthill Vacuum
& Blower Systems. Please examine the booster
for shipping damage, and if any damage is found,
report it immediately to the carrier. If the booster 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 booster
is stored outdoors, be sure to protect it from
weather and corrosion.
Mechanical Vacuum Boosters are built to
exacting standards and, if properly installed and
maintained, will provide many years of reliable
service. Tuthill urges you to take time to read
and follow every step of these instructions when
installing and maintaining your booster. Tuthill has
tried to make these instructions as straightforward
as possible. Tuthill realizes getting any new piece
of equipment up and running in as little time as
possible is imperative to production.
OTE:NRecord the booster 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.
This manual covers the installation, operation,
and maintenance of the Tuthill Vacuum & Blower
Systems Mechanical Vacuum Boosters.
APPLICABLE DOCUMENTATION
The applicable documents associated with this
manual are:
• 2006/42/CE – Machinery Directive
• EN 1012-2:1996 – 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 booster.
INTRODUCTION
01

Manual 2003 Rev D p/n 2003
2
GRAPHIC CONVENTIONS USED 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:NIndicates 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 2003 Rev D p/n 2003 3
02
Conventions and Data Plate
DATA PLATE
WARNINGWARNING CAUTION CAUTION
http://www.tuthill.com
Hearing protection
re
q
uired.
Do not touch hot
surfaces.
ASUehtniedaM7396-528)008(
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 & clothing away from
machine.
During operation, keep body and
clothing away from inlet and outlet
of the booster.
WARNING
!
Do not operate without guards in
place.
CAUTION
!
Hearing protection is required
while the booster is in operation.
Noise levels may reach as high as
81 dBA.
CAUTION
!
Do not touch hot surfaces.
The upper limit of the booster
operation is 375°F (190°C). Do
not touch the booster while it is in
operation and assure booster is
cool when not in operation.

Manual 2003 Rev D p/n 2003
4
02
Conventions and Data Plate
MODEL NUMBER:
The specic model of the booster
SERIAL NUMBER: Unique to each booster
YEAR: Year of manufacture
RPM: The maximum RPM at which the booster can be operated

Manual 2003 Rev D p/n 2003 5
LIFTING
03
WARNING
!
The booster must be handled using an
appropriate device such as a fork truck or
appropriate lifting device. See Table 4-1 on page
8for approximate weights. Care should be
taken to assure booster does not over-turn during
handling and installation.

Manual 2003 Rev D p/n 2003
6
Refer to specic data sheets for ow 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 models 150
to 400, 540 to 720, and 850 to 2700 mechanical
vacuum boosters are positive displacement type
boosters, whose pumping capacity is determined
by size, operating speed, and differential pressure
conditions. Vacuum boosters 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 booster 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 booster, but by the amount
of restriction, either downstream of the booster
discharge port, or upstream of the booster 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,
which will increase operating temperatures, and
can overload and/or seriously damage the booster.
Likewise, if the possibility exists that ow to the
booster inlet may be cut off during normal operation
of a process, install an adequate vacuum relief
valve. A pressure-type relief valve in the discharge
line near the booster is also strongly recommended
for protection against cutoff or blocking in this line.
Use check valves on each booster when more than
one booster is connected to a discharge line.
Vacuum boosters must be protected by cut-in
switches or with bypass valving to limit differential
pressure across the booster.
When a belt drive is used, it is possible to adjust
booster speed to obtain desired capacity by
changing the diameter of one or both sheaves,
or by using a vari-speed motor pulley. In a direct
coupled arrangement, a variable-speed motor or
transmission is required. Gas boosters 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 booster,
a check valve in the piping downstream of the
booster will protect the booster from overspeeding
in a backward direction upon shutdown.
DESCRIPTION
04

Manual 2003 Rev D p/n 2003 7
04
Description
INLET INLET INLET
DISCHARGE DISCHARGE DISCHARGE
Figure 4-1 – General Operation Principle
FLOW BY DIRECTION
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 2003 Rev D p/n 2003
8
04
Description
SPECIFICATIONS
MODEL
APPROXIMATE OIL
CAPACITY PORT SIZE MAXIMUM
RPM
APPROXIMATE WEIGHT
VERTICAL HORIZONTAL VERTICAL HORIZONTAL
150
1 qt (0.95 L) 0.5 qt (0.47 L)
2 in. (50 mm)
3,600
145 lb
(65 kg)
130 lb
(59 kg)
240 3 in. (80 mm) 160 lb
(73 kg)
145 lb
(66 kg)
400 4 in. (100 mm) 195 lb
(88 kg)
180 lb
(82 kg)
540
1.5 qt (1.42 L) 1 qt (0.95 L)
4 in. (100 mm)
3,600
260 lb
(118 kg)
240 lb
(109 kg)
720 4 in. (100 mm) 300 lb
(136 kg)
280 lb
(127 kg)
850
4 qt (3.79 L) 2.5 qt (2.37 L)
6 in. (150 mm)
3,600
450 lb
(204 kg)
430 lb
(195 kg)
1200 6 in. (150 mm) 520 lb
(236 kg)
490 lb
(222 kg)
1600 6 in. (150 mm) 580 lb
(263 kg)
540 lb
(245 kg)
2000 8 in. (200 mm) 685 lb
(310 kg)
645 lb
(293 kg)
2700 10 in. (250 mm) 790 lb
(358 kg)
750 lb
(340 kg)
Maximum discharge temperature is 375°F (190°C). Maximum temperature is based on a 70°F (21°C) inlet temperature.
For inlet temperatures below 70°F (21°C), maximum allowable temperature rise across the vacuum booster should also
never exceed 305°F (170°C).
Table 4-1 – Specifications
To permit continued satisfactory performance, a
vacuum booster 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 4-1 –
Specications” on page 8 for various
booster sizes when operated under the standard
atmospheric conditions. Do not exceed any of
these limits.
EXAMPLE: Operation of a vacuum booster
seldom results in pressure differentials large
enough to strain the booster drive train (bearings,
gears, and seals). Typically in vacuum boosting,
the maximum allowable temperature limit (the limit
is a function of the temperature rise as well as the
inlet temperature) for any particular booster may
occur well before the maximum speed or allowable
power rating is reached. Temperature rise then
becomes the limiting condition. In other words,
the operating limit is always to be determined
by the maximum rating reached rst, and it can
be any one of the three: temperature, speed, or
horsepower.

Manual 2003 Rev D p/n 2003 9
04
Description
Specially ordered boosters with nonstandard
construction, or with rotor end clearances
greater than shown within the “Assembly
Clearances” on page 31, will not have the
operating limits specied here. Contact your
Tuthill Vacuum & Blower Systems sales
representative for specic information.
Pay special attention when a vacuum booster
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.
Deep vacuum requires instrumentation much
more sensitive than standard thermometers and
mercury-type pressure or vacuum gauges. At
operation pressures less than 100 Torr (mmHg),
use low-deadband cut-in switches and low-mass
thermocouples, positioned so the sensor is
connected to the inlet and discharge connections of
the vacuum booster. NPT connections are provided
at each of the inlet and discharge ports for this
purpose. Standard temperature switches, because
of their higher mass, do not have reaction times
fast enough to adequately protect the vacuum
booster. Likewise, standard vacuum switches are
not recommended for cut-in switches, as vacuum
boosting typically requires a very accurate cut-in
point. A tachometer will enable periodic checks of
operating speed.

Manual 2003 Rev D p/n 2003
10
05
GENERAL
DANGER
!
The booster 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 booster 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
!
Table 4-1 on page 8 states the maximum
operating speed in RPM (rotations per minute)
and maximum temperature. Do not exceed these
limits. The installation of the booster shall take
these critical operating parameters into account
and adequate control features implemented.
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 booster is removed and still does not
move freely, check inside the booster housing for
foreign material.
INSTALLATION

Manual 2003 Rev D p/n 2003 11
05
Installation
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.
If booster sustains damage while being
shipped to your facility, do not return it to
the factory without rst obtaining shipping
instructions from Tuthill.
Do not remove protective covers and plugs until
the connections are complete. Mount the booster
on a at, 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 booster supports an equal share
of the booster weight. This is necessary to prevent
eventual twisting of the booster. Make sure the
feet rest evenly on the mounting surface before
fastening down. Twisting or cramping the booster
during mounting will cause rotor contact and
binding during operation, resulting in a condition
called “soft foot”. See Soft Foot on page 12 for
further details and preventative measures.
A booster that is factory-mounted on a base should
not require the above adjustments. However, since
the assembly can become twisted in shipping or
installation, check for soft foot after installating 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 ooring, 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/
booster base or mounting plate rather than directly
under the feet alone.
Make sure piping is accurately squared with the
booster and supported independently. Stress
imparted from incorrectly aligned piping or
mounting will create problems with bearing and
seal life, possibly leading to internal contact. The
booster 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 booster. Stress can be checked in a free
state with feeler stock or veried on a previously
installed booster with the aid of a dial indicator.
Spring or gap should be less than 0.002 in.
(0.05 mm).
A booster 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 18 for
more information.
Boosters 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 up to 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 booster 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 28.
Booster Air Intake
To minimize maintenance, supply the booster with
the cleanest air possible. The air must not contain
any ammable or toxic gases, as the booster
will concentrate these gases. This could result in
damage to the booster and surrounding property
and lead to personal injury or death. Do not block
or restrict the opening or the booster, as the motor
and booster could overheat and fail.
Do not use boosters on explosive or hazardous
gases. Do not exceed the limits described in
Table 4-1 – Specications on page 8 on
pressure differential, running speed, and discharge
temperature.

Manual 2003 Rev D p/n 2003
12
05
Installation
If it is necessary to take air from a remote source,
such as in a vacuum application, make sure
diameter of the piping is at least equal to the
diameter of the booster 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 booster 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.
Foundation
The booster does not need a special foundation.
However, it does require a solid, level oor and
adequate frame support. Bolt the booster to the
oor and seal any cracks.
Location
Install the booster 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
booster 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. See Assembly
Clearances on page 4133.
Soft Foot
Soft foot is a condition in which one of the booster
feet does not sit at on the base. Soft foot is
usually due to irregularities in the surface to which
the booster 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 5-1 – Illustrations of Soft Foot
1. Place the booster on base.
2. Check each foot for gaps between the foot
and base (soft foot). Shim as necessary to ll
gap within 0.002 in. (0.05 mm). Figure 5-1
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 booster may fail prematurely.
3. Tighten all bolts.
4. Mount a dial indicator on 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 remaining feet.

Manual 2003 Rev D p/n 2003 13
05
Installation
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 booster.
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 booster and driving
equipment can produce serious
physical injuries. The booster
should never be run with the inlet
or discharge piping removed. If
it becomes necessary to inspect
the rotating parts of the booster 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.
DANGER
!
Assure that properly sized vacuum breaks/relief
valves are used on the inlet side of the booster.
Also assure that properly sized pressure relief
valves are used on the outlet of the booster. The
sizing shall be such to assure that the proper
ow can be achieved without exceeding the rated
vacuum and pressure ratings.
DANGER
!
Booster housing and associated
piping or accessories may
become hot enough to cause
major skin burns on contact.
WARNING
!
Use lock out/tag out procedures
to disable the electrical energy
source before any service or work
is done on the booster.
WARNING
!
Avoid extended exposure in
close proximity to machinery with
high intensity noise levels. Wear
adequate ear protection.
OTE:NUse proper care and good procedures in
handling, lifting, installing, operating, and
maintaining the equipment.

Manual 2003 Rev D p/n 2003
14
05
Installation
LUBRICATION
Every booster from Tuthill Vacuum & Blower
Systems is factory-tested, oil-drained, and shipped
dry to its installation point. Fill both independent oil
reservoirs to the proper level before operation. Oil
reservoirs are under the vacuum.
Shaft bearings at the gear end of the booster are
splash-lubricated by one or both gears dipping
into an oil reservoir formed in the gear end plate
and cover. Shaft bearings at the drive end of
the booster are lubricated by a slinger assembly
dipping into an oil reservoir. Before starting the
booster, ll the oil sumps as described in Filling
Procedure on page 14.
Add oil to the booster in the quantity listed in Table
4-1 – Specications on page 8. Make sure oil
level is maintained within the notched area of the
sight glass. See Figure 5-2. Lower drive boosters
have “bull’s eye” type oil level gauges. Maintain oil
levels at the center of the glass.
WARNING
!
Never attempt to change or add lubrication
while the booster is running. Failure to heed this
warning could result in damage to the equipment
or personal injury. Oil must be checked when the
booster is NOT running.
WARNING
!
Properly dispose of the spent lubricants. Refer
to the manufacturer of the lubricant and any
regulations to assure proper and safe disposal.
WARNING
!
Do not start the booster until you are sure oil
has been put in the gear housing and rear
cover. Operation of the booster without proper
lubrication will cause the booster to fail and void
the warranty.
Assure oil is compatible with copper/yellow
metals (if equipped with cooling coils).
See Table 4-1 – Specications on page 8
for oil capacities.
Filling Procedure
See Recommended Lubricants for Tuthill
Blower and vacuum boosters on page 33 for
suggested lubricants and grease.
1. Remove the ll plugs or breathers from both
gear end and drive end plates.
2. Slowly pour oil through ll until oil appears in
the oil sight glass. Bring the oil level to the
center of the sight glass.
3. Verify oil level is at proper level in both gear
end and drive end sight glasses.
4. Replace the ll plugs or breathers that were
removed in step 1.