Blastrac 6-54DC User manual

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
1
1.0 Safety Instructions...................................................................................................2
1.1 Safety – Mechanical................................................................................................3
1.2 Safety - Electrical ....................................................................................................4
1.3 Safety - Dust Hopper and Ventilation Tips ..............................................................6
2.0 Owner/Operator Responsibilities.............................................................................7
3.0 Description and Function - General.........................................................................8
3.1 Description and Function - Filter Chamber..............................................................8
3.2 Description and Function - Dust Bin........................................................................9
3.3 Description and Function - Blower...........................................................................9
3.4 Description and Function - Minihelic Gauge............................................................9
3.5 Description and Function - Pulse Pressure System ..............................................10
3.6 Description and Function - Chassis.......................................................................10
3.7 Description and Function - Electrical Control Panel ..............................................10
3.8 Description and Function - Ventilation System......................................................14
4.0 Equipment Calibration...........................................................................................16
5.0 Start-Up Procedures..............................................................................................17
6.0 Dust Collector – Troubleshooting..........................................................................18
6.1 Vacuum Adjustment – Operating Tips...................................................................20

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
2
1.0 Safety Instructions
Do Not operate or perform maintenance on this equipment
without reading, understanding and complying with these Safety
Instructions.
The Blastrac Operating Instructions have been specifically prepared for operating and
maintenance personnel working with the 6-54 Dust Collector. The information in this
manual is intended to provide an understanding of the equipment to minimize safety
risks and maximize performance.
All operating and maintenance personnel must observe all warnings and precautions
that are listed in this manual and posted on the 6-54 Dust Collector. All safety and
warning labels posted on the machine must be followed as well as the safety
program instituted by your individual management.
A thorough understanding of your Blastrac machine will help ensure that the machine
can be operated efficiently with minimal safety risks. No instructions, written or verbal,
can be effective without the use of sound judgment and good work practices in the
operation and maintenance of the equipment. Listed below are some of the practices
that should always be observed.
WARNING
Do Not operate or perform maintenance on this equipment without wearing
appropriate respiratory protection.
Wear appropriate respiratory protection when using or servicing the machine.
Breathable (respirable) silica dust may be generated by use of this product and can
cause severe and permanent lung damage, cancer, and other serious diseases. Do not
breathe the dust. Do not rely on your sight or smell to determine if silica dust is in the
air. Silica dust may be in the air without a visible dust cloud. If air monitoring equipment
for silica is not provided by your employer at your worksite, consult your employer and
OSHA regarding the appropriate respiratory protection or permissible alternate
protection methods such as air monitoring and warning equipment.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
3
Do Not operate this machine without all guards in place.
Maintain all guards in place - Blastrac machines are equipped with guards or
coverings for parts that may be hazardous.
Do Not operate this equipment without wearing appropriate personal protective
equipment for your eyes, ears and feet.
All personnel in the immediate work area must wear OSHA approved safety glasses
with side shields and OSHA approved hearing protection whenever the dust
collector and surface preparation equipment is running. Protective clothing is also
recommended. Long sleeve shirts and safety shoes should be worn and loose clothing
should be avoided.
1.1 Safety – Mechanical
Do Not perform maintenance without following the Lock Out/Tag Out procedure
to eliminate all energy sources.
Before performing any type of maintenance on your Blastrac equipment, be sure that all
moving parts have completely stopped. Rotating parts, for example, may continue to
rotate for a period of time once it has been deactivated. Follow lock-out/tag-out
procedures to be sure that the power has been disconnected and will remain
disconnected until all maintenance has been completed.
•Assure every power source that can produce mechanical movement has
been deactivated and locked in the off position.
•Assure all potential energy sources have been minimized. (Example: Move
the machine to level ground before performing any maintenance so machine
cannot move by gravitational force.)
•Assure loose or freely moveable parts of the machine have been secured
against accidental movement.
All drive guards must be kept in place and in good condition except during maintenance
or when repair work is being performed. Once maintenance or repair work is complete,
be sure all guards are correctly remounted.
Stay clear of the blower outlet and never open the top lid of the dust collector unless the
machine is locked and tagged out.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
4
OSHA approved safety glasses with side shields and OSHA approved hearing
protection must be worn when working with or near equipment in use. Gloves, where
appropriate, can be worn for added protection.
Loose fitting clothing and gloves should not be worn when working near belts, chains,
sprockets, shafts and other moveable components.
The surface preparation equipment and all areas around the machine should be kept
clean.
DO NOT operate equipment that has been damaged or is any condition that may
cause injury to personnel.
DO comply with all safety and danger signs posted on the machine and all
information posted where the machine is being operated.
Do not operate Blastrac machinery in the rain or when heavy moisture is present.
Sticky, tar-related and rubber surfaces should be avoided when using Blastrac
machinery. Always empty the dust collector hopper before transporting the equipment.
1.2 Safety - Electrical
DO NOT open enclosure doors before disconnecting all power.
CAUTION - Line terminals may be alive when main switch is in “OFF” position.
Disconnect all power before opening enclosure doors.
WARNING - DO NOT operate the equipment with the electrical panel door(s) open.
WARNING - The opening of any of the branch circuit protective devices may be
an indication that a fault current has been interrupted. To ensure continued
protection against fire or electric shock, current carrying parts and other
components of the combination controller should be examined and replaced if
damaged. If burnout of the current element of an overload relay occurs, the
complete overload relay must be replaced.
Some overload devices in the control panel have an adjustable feature. Assure these
settings comply with settings provided for each device in the electrical schematics.
DO NOT bypass overcurrent devices provided in this equipment.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
5
Never use oversized fuses or bypass any fuses to operate the machinery. Always refer
to the electrical drawings provided for the individual machines for proper size and type
of overcurrent protection and fuses.
DO NOT SUBSTITUTE ANY OF THE ELECTRICAL COMPONENTS.
When replacing electrical components, care should be taken to use the exact
component that was originally supplied with the machine. These parts are listed in the
electrical section of this manual. The electrical components in these systems have
been coordinated for optimum protection of personnel and equipment –
DO NOT connect or disconnect power cables with voltage present or while under
load.
Disconnect all power connections and observe lock out/ tag out procedures before
attempting maintenance or repair of any electrical or mechanical components.
Avoid all contact with rotating motor parts, drives or driven components.
Before energizing the equipment, check the condition of all power cables. While extra
hard usage Type W cable is provided with this equipment, damage can occur during
equipment transit. All cabling should be checked for cuts and worn condition prior to
connection to the power source.
Cable strain relief devices are provided for all power cabling. Assure that these strain
relief devices are secured to the frame of the equipment with the hardware provided
prior to energizing the equipment.
DO NOT start the equipment without first verifying it is connected to the proper
power source for voltage, frequency and phase.
While safeguards have been provided in this equipment to protect operating personnel
and equipment, ALWAYS CHECK that the proper power source is connected (voltage,
frequency and phase). Check the motors for proper rotation once the power source has
been verified. Sustained improper motor rotation can damage machine components.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
6
1.3 Safety - Dust Hopper and Ventilation Tips
DO NOT operate collector with excessive dust in the hoppers.
All Blastrac surface preparation equipment must be properly ventilated to be
environmentally effective. This benefits the operator, machine efficiency and
contributes significantly to better wear and less maintenance.
The level of dust in the dust hopper should be kept to a minimum. The importance of
checking the dust level during normal working conditions cannot be over-stressed.
Doing so keeps the surface preparation equipment internal components as clean as
possible, thereby eliminating the greatest cause of wear to the internal components of
the machine.
Do determine if the dust being collected is hazardous and comply with all
applicable local, state and federal regulations concerning protection against
explosion, fire, respirable dust and any other risk factor related to the dust
product being collected.
Cleaning the dust hopper at the end of each working day or shift is also very
important. Many types of dust (dependent on the surface being cleaned) have the
potential to easily ignite when left stored. The hazards of fires and explosions are
minimized when the dust is removed as recommended.
Wear appropriate respiratory protection when using or servicing the machine.
Breathable (respirable) silica dust may be generated by use of this product and can
cause severe and permanent lung damage, cancer, and other serious diseases. Do not
breathe the dust. Do not rely on your sight or smell to determine if silica dust is in the
air. Silica dust may be in the air without a visible dust cloud. If air monitoring equipment
for silica is not provided by your employer at your worksite, consult your employer and
OSHA regarding the appropriate respiratory protection or permissible alternate
protection methods such as air monitoring and warning equipment.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
7
2.0 Owner/Operator Responsibilities
1. The owner/operator shall provide site electrical power and observe operation
ampere maximums according to the following chart.
3-Phase/60 Hertz Site Power Requirements
Total FLA LARGEST MOTOR FLA @ SUPPLY VOLTAGE
12.3 AMPS 7.6 AMPS 208/230 V
2. The owner/operator shall only use personnel who have been trained by a Blastrac
Technician for the operation and maintenance of Blastrac equipment.
3. The operator shall provide the necessary consumable components for the surface
preparation equipment in accordance with the recommendations of a Blastrac
technician so that the machine will operate at maximum efficiency.
4. The operator shall be responsible for the observance of all safety precautions
expressed in this manual.
5. The operator shall perform all maintenance and basic repair functions as stated and
described in this manual.
6. The operator shall dispose of all dust collector refuse in accordance with the
appropriate state and federal regulations.
7. The operator shall provide the minimum following tools and accessories:
Hammer Screwdrivers
Wrench Set VOM (meter)
5/16” Allen Wrench Magnetic Broom

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
8
3.0 Description and Function - General
The 6-54 Dust Collector is normally attached to the surface preparation equipment with
50 feet of 5-inch diameter flexible exhaust hose. This dust collector is designed to be
able to fit through a 34-inch door opening and is mounted on a mobile chassis. During
actual operation, the surface preparation equipment cleans in a radial area around the
dust collector. Once an area is cleaned, the entire system is moved to an adjacent area
to repeat the process. During some applications, the dust collector may be positioned
in an adjacent room and connected with a longer hose. This procedure is usually done
on steel surfaces where less dust and contaminants are being removed. Blastrac does
not recommend using more than 50 feet of hose on concrete surfaces. Consult with
your Blastrac representative if you have a particular application that requires a longer
exhaust hose. The 6-54 Dust Collector is comprised of the following elements:
•Filter Chamber
•Dust Bin
•Blower
•Minihelic Gauge
•Pulse / Pressure System
•Chassis
•Electrical Control Panel
3.1 Description and Function - Filter Chamber
The central part of the dust collector is the filter chamber. Dust laden air enters the
chamber from the surface preparation equipment through the exhaust hose and into the
vent hose connection located at the bottom left from the control panel. The dirty air
passes through a plenum and flows through an array of four vertically mounted,
specially designed filter cartridges. Dust is captured on the surface of these filters
allowing clean air to pass to the clean air portion of the dust collector where it exhausts
to the open atmosphere.
The dust that was trapped on the external surface of the filters is periodically removed
by pulsing the filters with an internally supplied burst of compressed air. This
momentary pulse of air allows the dust to fall into a hopper at the bottom of the filter
chamber. Two filters are pulsed (in sequence) at a time, determined by a timer board
located in the control panel. This timer board is usually set to pulse a two filter bank
every ten seconds and allows the pressurized air reservoir to drop about 30 PSI during

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
9
3.1 Description and Function - Filter Chamber Cont’d
each pulse. The timer board determines the time between pulses and the length of
each pulse. Venturi valves are located above each filter for maximum filter cleaning
efficiency.
3.2 Description and Function - Dust Bin
Once the dust falls to the bottom of the chamber, it collects in a special disposal bin that
can be removed. The dust collector must be turned off before removing the dust bin
from the machine for dust disposal. Care should be taken to ensure that the dust
bin does not overfill. Filter damage can occur if the dust level exceeds the top of
the dust bin.
The dust bin is equipped with wheels and lifting handles to assist when disposing of the
dust. To release the dust bin, pull down on the mechanism release bar. Care should
be taken when loosening the clamps. A full dust bin can hold approximately 154
pounds of material.
3.3 Description and Function - Blower
The blower (exhaust fan) is mounted on top of the dust collector chassis and is powered
by a two horsepower electric motor. The blower moves approximately 400 cubic feet of
air per minute at peak efficiency.
3.4 Description and Function - Minihelic Gauge
A gauge is mounted on the electric control panel that measures the differential pressure
across the filters. As the filters age and become saturated, the reading on this gauge
will increase. During normal operation, this gauge should read between zero and four
inches. A consistent reading between four and six inches signifies that the filters should
be changed soon. A reading of more than six indicates that the filters need to be
changed immediately.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
10
3.5 Description and Function - Pulse Pressure System
A direct driven, 3/4 horsepower air compressor with external pressure regulation is
mounted beneath the control panel on the dust collector. The pressure of this system
is determined by the setting of the unloader valve located on the pressure side of the
compressor. Compressed air is delivered to an air reservoir located inside the dust
collector’s clean air compartment. Two Goyen (diaphragm) valves are located above
the air reservoir and are activated by a timer board located inside the control panel.
The timer board actuates one of two sequentially operated pilot solenoids located on
the left side of the control enclosure.
These pilot solenoid valves in turn release the pressure held by the Goyen valves,
allowing a pulse of air to be directed downward through the Venturi ports to pulse the
filter cartridges. This air pulse cleans the filters sequentially as described in the filter
chamber paragraph. The pressure setting on this system is set at a maximum
pressure of 80 PSI. If the pressure goes above 125 PSI, an in-line pressure safety
valve will open to protect the pressure components.
3.6 Description and Function - Chassis
The entire dust collector is mounted on a mobile chassis resting on four castors. Two
swivel castors are mounted beneath the air inlet for ease in maneuverability and the
opposite castors are rigid. The upper frame is equipped with one lifting eye and a bar
handle to help raise and lower the machine for transportation.
NOTE: The dust collector is not designed for vehicle towing or movement on roads.
3.7 Description and Function - Electrical Control Panel
The control panel for the 6-54 Dust Collector is mounted on the front chassis. This
panel was designed to safely operate in the range of 3 phase, 60 Hertz voltages (208-
230 and 460-480) typically available in the U.S.
Operator interface elements on the control panel give an indication of “Proper Rotation”
or “Improper Rotation”. This circuitry will not allow the equipment to operate unless the
rotation is correct.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
11
3.7 Description and Function - Electrical Control Panel Cont’d
After proper rotation is established, the operator has only to operate the “Voltage
Selector” switch to the “Low” or “High” position as indicated to start the equipment. This
“Voltage Setup” switch connects the windings of the motor(s) and control power
transformer for “High” or “Low” voltage. The AVS circuit will prevent a wrong setting of
the “Voltage Selector” switch either prior to startup or during operation. A wrong setting
prior to startup will not allow the system to energize. If switched during operation, the
system will simply “turn off”. This “High” or “Low” voltage switch is for the 654 dust
collector only.
The control panel on the 6-54 Dust Collector is provided with the following controls,
instruments and components that are needed to operate, monitor and safeguard the
operator and the unit.
1. Main Disconnect Switch – Connects/disconnects power to both the dust collector
and the blast unit.
2. Emergency Stop Switch – This is a “push to operate/pull to reset”, red operator. It
provides for an immediate shutdown of all elements of the dust collector system.
3. Voltage Selector Switch – Connects the control transformer and motor leads for
the “Low” or “High” voltage being used.
4. Improper Rotation Pilot Light – This red pilot light indicates the phase rotation is
improper.
5. Proper Rotation Pilot Light – This green pilot light indicates the phase rotation is
correct.
6. Control Power Pilot Light – This green pilot light indicates the phase rotation is
correct, the “Voltage Select” switch position is proper and the AVS circuit is
satisfied. The machine is electrically set up and ready to run.
7. Digital Voltmeter – Provides voltage readout and evaluates the voltage level
being presented to the dust collector unit. Provides information to internal
circuitry that protects the system from being inadvertently connected to the wrong
voltage.
8. Phase Monitor – Provides phase sequence (rotation) and phase loss protection.
Will not allow the system to start unless rotation is correct and all three phases
are present.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
12
9. Compressor Start / Stop Buttons – Allows the operator to start or stop the
compressor with 120 volt control voltage circuitry.
3.7 Description and Function - Electrical Control Panel Cont’d
10.Blower Start / Stop Buttons – Allows the operator to start or stop the blower with
120 volt control voltage circuitry. Also energizes the timer board and associated
circuitry. The dust collector will not pulse unless the blower is running.
11.Elapsed Time Meter – Provides an indication of “run time” of the blower.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
13

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
14
Fuseless Coordinated Motor and Circuit Protection – This control system was designed
to comply with the National Electric Code as a “multi-motor and other loads” branch
circuit. The control elements in this system have minimum withstand rating of 50 kA
when the branch circuit providing power is protected with a listed fuse or breaker of
equal or greater rating.
3.8 Description and Function - Ventilation System
A controlled flow of air must pass through the surface preparation equipment and the 6-
54 Dust Collector during normal operation for the reasons listed below:
•Cools surface preparation equipment components.
•Helps remove dust from work surface.
•Transports dust and contaminants to dust collector.
Ventilation air must follow a designed path through the machine(s). Any irregularities in
the path can affect the performance of the system. The air sequence follows:
1. Air enters the area around the seals of the surface preparation equipment at a high
velocity and helps sweep dust from the work surface.
2. This air traverses up the through the equipment housing and exits through the outlet.
The air movement through the equipment housing aids in keeping the equipment
housing and internal components cool.
3. The hose delivers the contaminated air to the dust collector where the air is filtered
and returned to the atmosphere.
The ventilation system should be monitored on a regular basis. Bad or improper
ventilation can lead to poor component life and premature wear on a number of
ventilation related items on the equipment. Some of the more important areas to
monitor, relative to the ventilation system, are:
•The skirts around the blast housing should be kept in good repair.
•The seals around the separator lid should be checked regularly.
•The hose connections to the blast unit and the 6-54 Dust Collector should be
tight and held in place with metal clamps.
•The hose should be kept in good repair. Flattened spots, holes and wear
spots should be corrected immediately. Replace hose if necessary.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
15
•Ventilation leaks on the blower assembly seal and especially the dust bin seal
should be minimized. The dust bin seal can be checked by feeling for air
leaks around the seal and evidence of dust leaks.
3.8 Description and Function - Ventilation System Cont’d
Any ventilation irregularities can have an adverse effect on the overall
performance and efficiency of the system. Improper ventilation can cause
increased wear on internal components of the surface preparation equipment.
An important fact that is often ignored or misunderstood is:
The dust and contaminants are the principal cause of component wear.
A well-maintained ventilation system can remove contamination, which
in turn, helps reduce operating costs and increase the overall efficiency
of the surface preparation equipment.
DO handle and dispose of all dust in accordance with all applicable local,
state and federal regulations for the specific composition of dust being
collected.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
16
4.0 Equipment Calibration
1. Dust Collector Pulse Timer - Set for approximately 10 seconds for concrete
cleaning; 15 seconds for steel cleaning.
2. Compressor Pressure Setting - 80 PSI max. The unloader adjustment
determines pressure (30 PSI drop for Pulse).
3. Pressure Drop Across Filters - Minihelic gauge should read between 1 and
4 inches. An indication above 4 indicates that the filters are dirty and should
be replaced.
4. Dust Bin Change Interval. - Inspect at 1/2-hour intervals to estimate fill time.
Do not allow dust bin to overfill.
5. Vacuum Adjustment Gate on the 6-54 Dust Collector is used to reduce or
increase the suction through the hose between the dust collector and the
surface preparation equipment. Closing the vent increases the suction.
Vacuum Adjustment Gate
Normal surface preparation will usually be accomplished with the vacuum
adjustment gate partially open. A period of trial and error may be necessary
for specific job applications. Generally speaking, the more dust generated by
your surface preparation equipment, the greater the suction you will need
from the dust collector to keep the abrasive as clean as possible.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
17
5.0 Start-Up Procedures
Note:
All operating and maintenance personnel assigned to this machinery should read
and understand these Operating Instructions before attempting any operational
or maintenance work on this equipment. Also, Blastrac highly recommends that
all operating and maintenance personnel receive a thorough training regimen
from an authorized Blastrac representative before attempting to operate or
maintain this equipment.
1. Be sure all guards are correctly installed and functioning properly
2. Be sure filter cartridges are tight and secure
3. Be sure dust bust bin is tight against the filter chamber
4. Connect the hose to the cleaning system and filter chamber
5. Turn on Compressor
6. Turn on Blower
•Before beginning work, listen to make sure the filter cartridges are being
pulsed at regular 10 second intervals. Filter damage and poor machine
performance will occur if the filters are not pulsed at regular intervals.
DO NOT operate equipment with excessive hose length that may lead to the
escape of hazardous dust due to insufficient suction.
For normal concrete surfaces, Blastrac does not recommend using more than the
50 feet of exhaust hose supplied with the dust collector. Adding additional hose
can cause insufficient suction which will allow unwanted dust and contaminants to
accumulate, thereby causing premature wear to surface preparation equipment internal
components. Additional hose can only be added when cleaning steel surfaces. Contact
your Blastrac representative for your specific steel cleaning application.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
18
6.0 Dust Collector – Troubleshooting
This unit has two inlet ports for hose attachment. It is designed to have one of them
sealed off with the provided end cap while running with the blast unit. Failure to seal off
this additional hose connection port can result in improper operation of the dust collector
unit.
Note: Once the 6-54 Dust Collector has been in operation for several hours, a stable
operating level will result. Sudden changes in operation can usually be traced to a
malfunction.
Trouble Probable Cause Remedy
Contaminated abrasive -
fines and contaminants
not being removed from
abrasive.
Very soft concrete
removal. Excessive dust
quantities entering
system. (Will cause
excessive component
wear.)
Insufficient air flow being
delivered by exhaust fan.
Increase machine speed to
reduce the amount of concrete
removal or reduce abrasive
flow to wheel.
Check fan rotation, check
exhaust hose and connections.
Check air control gate.
Visible dust discharge. Torn, punctured or
improperly installed filter
cartridges.
Dust bin seal gasket torn
or missing
Check filters (clean air section
should show which filter is
faulty). Replace or reinstall.
(New machines will allow small
amounts of dust through filters
for about ½ hour until filters are
broken in.)
Repair or replace gasket.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
19
6.0 Dust Collector – Troubleshooting Cont’d
Trouble Probable Cause Remedy
High differential pressure.
Clogged filters.
Screen clogged/dirty.
Check filter pulsing rate and
pressure. Pressure should
be 80 PSI and drop about
30 PSI for each pulse
occurring once every 10 -
11 seconds. Do not allow
dust bin to overfill.
Filters old and saturated –
replace filters.
Clean/replace screen
located inside filter
chamber.
Pressure loss.
Pressurized air leak.
Goyen diaphragm stuck
open.
Unloader valve not holding
pressure.
Compressor not building air
properly.
Timer board malfunction.
Check all high pressure air
connections.
Check solenoid valves’
operation. Replace if
necessary. Check
diaphragm(s). Clean or
replace if necessary.
Adjust or replace unloader
valve.
Repair or replace
compressor. Check air
hoses for leaks.
Check “tell-tale” lights on
timer board, replace if
necessary.

Operating Instructions 6-54DC 208-230v/460-480 3Ø 60HZ
Dust Collector
October 2005
© Copyright Blastrac 10/11/05
20
6.1 Vacuum Adjustment – Operating Tips
The vacuum adjustment gate on the 6-54 Dust Collector is used to reduce or increase
the suction through the hose between the dust collector and the blast machine. Closing
the vent increases the suction.
For normal concrete surfaces, Blastrac does not recommend using more than the
50 feet of exhaust hose supplied with the blast system. Adding additional hose can
cause insufficient suction which will allow unwanted dust and contaminants to
accumulate in the abrasive, thereby causing premature wear to the blast wheel and
liners. Additional hose can only be added when cleaning steel surfaces. Contact your
Blastrac representative for your specific steel cleaning application.
Normal shot blasting with the blast unit will usually be accomplished with the vacuum
adjustment gate partially open. Too much suction will sometimes allow abrasive to be
pulled from the blast unit and deposited into the dustpan. This is particularly true when
using small sizes of abrasive such as S - 170 and S - 230.
When using the 6-54 Dust Collector with the 1-15DMKIII or 1-15DSMKIII, the vacuum
adjustment gate should be fully closed for maximum suction. The 1-15DMKIII and 1-
15DSMKIII cleans a wider area and generates more dust, which necessitates the
maximum possible suction.
A period of trial and error may be necessary for specific job applications. Generally
speaking, the more dust generated by your shot blasting unit, the greater the suction
you will need from the dust collector to keep the abrasive as clean as possible.