AirTech 3BA Series Manual

Operating and Maintenance Instructions
3BA Regenerative Blowers

2

INSTALLATION & OPERATING MANUAL
3BA REGENERATIVE BLOWERS
Table of Contents
Section:
Page Number:
1. Safety
1.1 General Safety Precautions
1.2 Clothing and Protective Gear
1.3 Electrical Safety
1.4 Vacuum and Gauge Pressure Safety
1.5 Installation/Start-up
1.6 Maintenance Procedures
1.7 Hot Surfaces
1.8 Hearing Protection
1.9 Safety Guidelines for Transport of the unit
4
4
4
4
5
5
6
6
6
7
2
.
Technical Data
8
Table 1: 3 Phase, Single Stage, 50 Hertz 10
Table 2: 3 Phase, Single Stage, 60 Hertz 11
Table 3: 3 Phase, Two/Three Stage, 50 Hertz 12
Table 4: 3 Phase, Two/Three Stage, 60 Hertz 13
Table 5: Single-phase, 50 Hz
Table 6: Single-phase, 60 Hz
Table 7: Single Stage – Approx. Temperature Rise
14
14
16
Table 8: Two/Three Stage – Approx. Temperature Rise 17
Table 9: Tightening Torque Specifications 18
3
. Installation
20
3.1 Installation Procedure
21
4
. Start
-
up
4.1 Start-up Procedure
4.2 Potential Risks For Operators
23
23
23
5
. Maintenance and Servicing
24
5.1 Troubleshooting Chart 25
5.2 Lifting 27
5.3 Storage 28
5.4 Disposal 28
6
.
Exploded
-
View Drawings
29
3BA1 Single-Stage
29
3BA1 Two-Stage 30
3BA1943 Two-Stage 31
3BA7 Single-Stage
32
3BA7 Two-Stage 33
Warranty Statement
34
3

1. Safety
1.1 General Safety Precautions
All personnel should familiarize themselves with the units’ specifications
and be careful not to exceed the unit’s capacity.
Transport, installation, operation, shut-down, maintenance and disposal of
3BA units should be carried out by qualified professionals.
Do not attempt to start or run the unit unless it has been completely
assembled. Particular attention should be paid to: the vacuum
pump/compressor cover, the muffler on the inlet and discharge
connections, and the fan guard.
The standard 3BA unit must never come into contact with flammable
substances.
1.2 Clothing and Protective Gear
It is recommended that all personnel wear proper protective gear while operating
the unit. This may include eye protection, gloves and helmets.
Please be aware that it is possible for hair and clothing to be pulled into the unit.
Avoid wearing loose-fitting clothing near the unit while it is operating and wear a
hairnet if necessary.
1.3 Electrical Safety
Electrical installation should only be done by qualified electricians. Before
doing any electrical work on a 3BA unit, please ensure that power to the unit
has been disconnected. Do not attempt to open the unit’s terminal box until you
have made certain that the unit is not connected to a power source.
The terminal box must be kept free of dirt and moisture at all times. Make sure
the terminal box cover and cable entries are tightly sealed so they remain
dustproof and waterproof. Check the terminal box regularly to make sure it is
sealed and free of debris and moisture.
WARNING: Improper operation of 3BA units can result in serious or
even fatal injuries. Please make sure all personnel have read and
understood this manual before operating the unit.
4

1.4 Vacuum and Gauge Pressure Safety
In order to avoid dangerous situations associated with vacuum and gauge
pressure, please utilize secure mounting elements, connections, lines, fittings,
and containers. Pipes/hoses must be securely connected to the inlet and
discharge connections. The inlet and discharge connections and the pipes/hoses
connected to them must not be closed, clogged, or soiled. Check regularly to
ensure that these connections and mountings are not becoming unseated. If
necessary, support pipes and hoses to ensure that there is no tension on the
connections. Failure to observe these precautions can lead to sudden
evacuation of hazardous fluids or dangerous suction that can pull hair or
clothing into the unit.
1.5 Installation/Start-up
The unit and any lines connected to it must be securely installed. In particular,
the feed pipes must be securely routed, e.g. in cable ducts, in the floor, etc.
If a separate control panel or other such interface will be used to start and stop
the unit, it should be installed in an area with an unobstructed view of the unit to
ensure that it is not switched on while being serviced.
Excess vibration can cause damage to the unit and/or unsafe conditions. Install
the unit on a solid foundation or a solid mounting surface. Check screw
glands/unions for strength and firm seating.
Cables and pipes should be installed in a recess in the floor or duct so they do
not present a tripping hazard.
To ensure sufficient cooling of the unit, ventilation screens and openings must
remain clear. Ensure that discharge air from other units cannot be pulled into the
unit.
Make sure that the inlet and pressure lines are clearly marked to avoid confusion.
Interchanged inlet and pressure lines can lead to damage to the unit and/or
serious injury.
Install a filter in the inlet pipe and replace it regularly. If particulates or debris
enter the unit, the blades of the impellers can be damaged and blades could
potentially break off, potentially creating a hazardous situation.
If re-starting the unit after it has been idle for a long period of time, measure the
insulation resistance of the motor. If values are less than 1 k ȍper volt of nominal
voltage, the winding may be too dry.
5

If the unit is installed or stored in an environment with a temperature of over
104°F (40°C) be aware that the winding may be damaged and the grease might
need to be changed more often.
1.6 Maintenance Procedures
Before beginning work on the pump-motor unit, please take the following
precautions:
• Make sure power has been completely disconnected
• Wait for the unit to come to a complete stop.
• Allow the unit time to cool.
• Shut off lines and release pressure
• Make certain that no vacuum or gauge pressure is present in the lines/tanks to
be opened.
• Make sure that no fluids can escape
Please note that the rotating impeller is accessible when the inlet and discharge
connections are open. Do not reach into the unit through open connections or
insert objects into the unit through any openings. Serious injury could occur. If
the unit is running without piping or tubing, provide the inlet and discharge of the
unit with either additional mufflers or piping of a sufficient length to prevent
access to the impeller.
Check regularly to ensure the terminal box is free of any dirt or foreign
substances and there is no moisture or humidity present. Make certain the
terminal box cover and cable entries are tightly closed.
1.7 Hot Surfaces
During operation, the surface of the unit can reach temperatures of 320°F
(160°C). It is advisable to cover the unit with suitable touch protection (e.g. a
perforated plate or wire cover). Do not touch the unit during operation, and allow
time to cool after shut-down. Temperature-sensitive parts such as lines or
electronic components should not come into contact with the surface of the unit.
1.8 Hearing Protection
Make certain any missing or defective silencers are replaced. Noise emitted by
the unit can cause serious hearing damage. Conduct a noise measurement test
while the unit is running. If the unit operates over 90 dB(A), please place a
warning sign in the area where the unit has been installed and make certain that
6

any personnel working in the vicinity wear ear protection at all times while the
unit is running.
1.9 Safety Guidelines for Transport of the unit:
Prior to transport and handling, please make sure that all components are
properly assembled and secure. Any machinery used to transport these units
must have the proper lifting capacity. Please consult the table on page 27 to find
the weight of the unit being handled. Do not stand or walk under suspended
loads.
If a 3BA unit has come in contact with any dangerous substances, it must
be decontaminated before being sent to Airtech for repair evaluation.
7

2 Technical Data
These operating instructions cover the Airtech 3BA side channel vacuum pumps
and compressors supplied with standard TEFC motors. Other configurations are
available including V-belt driven units, units with explosion proof motors,
mechanical seals, magnetic drives, coatings and modifications for high pressure
service. Airtech can provide any combination of modifications to meet your
application requirements. Such blowers, however, are outside the scope of this
manual.
Description
All regenerative blowers are dynamic compression devices and utilize a non-
contacting impeller to accelerate the gas and a specially designed housing to
compress the gas. Cooling is accomplished by using the motor fan to blow air
over the housing. In larger models, the housing is specially designed with
cooling fins to allow a wider range of operation. Both the inlet and outlet ports
have built-in silencers and mesh screens. Both the inlet and outlet have an
inside connection thread corresponding to DIN ISO 228. On larger units, multiple
suction and discharge connection configurations may be available.
The wetted parts are constructed of Aluminum on all models. The blower shares
a bearing with the motor. The seal between the bearing and the motor is not gas
tight in most models, therefore these blowers are not recommended for handling
of toxic or explosive gases. (Contact Airtech Vacuum, Inc. for additional options
if explosive or toxic gases will be handled.)
A full range of accessory items are available, including vacuum or pressure relief
valves, check valves, suction filters, motor starters, vacuum/pressure cross-over
valves, and in-line filters.
Application/Installation Environment
CAUTION! These blowers are designed for use in general industry.
Suitable personnel protection according to OSHA requirements is
provided, but the equipment should not be operated in residential settings.
Airtech blowers can be operated as either vacuum pumps or compressors. They
are suitable for use with air having a relative humidity up to 90 percent, but not
generally suitable for handling corrosive or erosive gases. Special versions for
toxic or aggressive gases may be available. Use of the standard blower in
aggressive environments may cause damage to the blower or exposure to gases
being handled in the local environment.
8

CAUTION! Dangerous (flammable or explosive) or aggressive (corrosive)
gases should not be handled by the standard blower.
Handling of flammable or aggressive gases and vapors may be possible by using
a specially configured or modified blower. Contact factory for additional
information. The standard blower is not suitable for operation in explosive
environments as defined by NFPA 70. Contact factory for assistance.
CAUTION! The ambient and suction temperatures should be between 40
and 105 F. For temperatures outside this region, please contact the
factory.
The maximum permissible pressure difference for vacuum or pressure is
dependant on the motor rating (See Tables 1 to 4 for detailed information by
model number.) and power supply frequency. The figures in Tables 1 to 4 are
computed assuming an ambient temperature of 77 F (25 C) and a local
barometric pressure of 1013 mbar (sea level). Operation at an ambient
temperature of 104 F (40C) is the maximum permissible, and will result in a
reduction of 10 percent on maximum vacuum or pressure attainable by the unit.
For temperatures between 77 F and 104 F, reduce the maximum pressure
reduction is a linear function of temperature.
9

Table 1. Three-phase, Single Stage, 50 Hertz
3BA1300-7AT06 .33/.25 200-240/345-415 2.1/1.2 48/82 -100/100 53
2BA1300-7AT16 .54/.4 200-240/345-415 2.6/1.5 48/82 -120/130 53
3BA1400-7AT06 .94/.7 200-240/345-415 3.8/2.2 84/142 -120/120 63
2BA1400-7AT16 1.15/.85 200-240/345-415 4.2/2.4 84/142 -160/160 63
3BA1400-7AT26 1.75/1.3 200-240/345-415 5.7/3.3 84/142 -170/200 63
3BA1500-7AT06 1.15/.85 200-240/345-415 4.2/2.4 120/204 -100/100 64
3BA1500-7AT16 1.75/1.3 200-240/345-415 5.7/3.3 120/204 -170/170 64
3BA1500-7AT26 2.15/1.6 220-250/415-460 7.5/4.3 120/204 -200/190 64
3BA1500-7AT36 2.96/2.2 200-240/345-415 9.7/5.6 120/204 -220/270 64
3BA1530-7AT16 1.75/1.3 200-240/345-415 5.7/3.3 165/280 -120/110 65
3BA1530-7AT26 2.15/1.6 200-240/345-415 7.5/4.3 165/280 -160/150 65
3BA1530-7AT36 2.96/2.2 200-240/345-415 9.7/5.6 165/280 -220/230 65
3BA1600-7AT06 2.15/1.6 200-240/345-415 8.5/4.9 188/320 -160/150 69
3BA1600-7AT16 2.96/2.2 200-240/345-415 9.7/5.6 188/320 -190/190 69
3BA1600-7AT26 4.04/3.0 200-240/345-415 12.5/7.2 188/320 -260/270 69
3BA1600-7AT36 5.4/4.0 200-240/345-415 13.0/7.5 188/320 -290/360 69
3BA1630-7AT06 2.15/1.6 200-240/345-415 8.5/4.9 240/408 -160/150 69
3BA1630-7AT16 2.96/2.2 200-240/345-415 9.7/5.6 240/408 -190/190 69
3BA1630-7AT26 4.04/3.0 200-240/345-415 12.5/7.2 240/408 -260/270 69
3BA1630-7AT36 5.4/4.0 200-240/345-415 15.6/9.0 240/408 -260/290 69
3BA1800-7AT06 5.4/4.0 200-240/345-415 15.6/9.0 280/476 -200/200 70
3BA1800-7AT16 7.4/5.5 200-240/345-415 23/13.3 280/476 -300/300 70
3BA1800-7AT26 10/7.5 200-240/345-415 29/16.7 280/476 -320/430 70
3BA1830-7AT06 5.4/4 200-240/345-415 15.6/9 400/680 -150/140 76
3BA1830-7AT16 7.4/5.5 200-240/345-415 23/13.3 400/680 -200/190 76
3BA1830-7AT26 10/7.5 200-240/345-415 29/16.7 400/680 -270/260 76
3BA1900-7AT06 10.8/8 200-240/345-415 31.5/18.2 568/965 -190/190 74
3BA1900-7AT16 16.8/12.5 200-240/345-415 48.5/28 568/965 -290/280 74
3BA1900-7AT36 25/18.5 200-240/345-415 64.5/37 568/965 -362/462 74
3BA1930-7AT16 16.8/12.5 200-240/345-415 48.5/28 744/1264 -290/280 71
3BA1930-7AT36 25/18.5 200-240/345-415 64.5/37 744/1264 -310/310 71
3BA1930-7AT36 25/18.5 200-240/345-415 64.5/37 744/1264 -310/310 71
3BA7310-0AT167 .75/.55 200-240/345-415 2.8/1.6 40/68 -250/250 57
3BA7410-0AT167 1.5/1.1 200-240/345-415 5.4/3.1 50/84 -300/380 58
3BA7510-0AT168 2/1.5 200-240/345-415 7.5/4.3 70/120 -370/650 64
3BA7510-0AT268 3/2.2 200-240/345-415 9.7/5.6 70/120 -310/430 64
3BA7610-0AT168 3/2.2 200-240/345-415 9.7/5.6 96/163 -310/430 65
3BA7610-0AT368 4.4/3.3 200-240/345-415 13/7.5 96/163 -500/750 65
Model
Voltage Motor
Current
(Amps)
Maximum
Pressure
(mbar)
Sound
Pressure
Level (dBA)
Rated
Power
HP/kW
Open Flow
Capacity
CFM/m3/hr
10