Blastrac 900VMB User manual

Original instructions in English
OPERATING INSTRUCTIONS 900VMB
VERSION 1.3

2
Inspection comments
Recurring inspections / maintenance log
*Competent person
Date / Hour counter
Findings
Repairs / Cleaning
Test
on
By*
Inspection before initial operation on: __________________________________________
By: __________________________________________
Date of initial operation: __________________________________________
Serial number & Year of manufacture: __________________________ _____________

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Table of contents
Maintenance log 2
1. Introduction 4
2. Machine description 4
2.1 900VMB 4
2.2 Remote control 5
2.3 Winches 6
2.4 Steel hoisting cables 9
3. Safety 10
3.1 Work area safety 10
3.2 Electrical safety 10
3.3 Personal safety 11
3.4 Machine safety 11
3.5 Shot / steel blasting safety 12
3.6 Maintenance safety 13
3.7 Dust collector safety 13
3.8 Transport safety 13
3.9 Markings on the machine 15
4. Before operation 16
4.1 Daily check points of power supply 16
4.2 Daily check points of machine 16
4.3 Check points on the hoisting and lifting equipment 16
4.4 Testing the proximity-switch 17
4.5 Testing the end-switch for winch 18
5. Operating 19
5.1 Before switch on 19
5.2 Adjust cable guide rolls and swivel castors 20
5.3 Switch on the machine 21
5.4 Switch off the machine 21
5.5 Operation 22
5.6 The blast pattern 22
6. Maintenance 23
6.1 Changing the mouth seal complete 25
6.2 Changing the blast wheel blades and impeller 26
6.3 Changing the control cages 27
6.4 Maintenance and service on the winches and cables 27
6.5 Regular checks of hoisting cables 28
6.6 Safety check by a competent person 29
6.7 Abrasive valve maintenance 30
6.8 Remote control maintenance 35
7. Troubleshooting 36
8. Selection of abrasive 41
9. Technical data 42
Contact

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1. Introduction
Before use, operators must be provided with information, instruction and training for the use of the machine
and the substances for which it is to be used, including the safe method of removal and disposal of the
material collected. All persons who are working with or maintaining this machine must read the manual
carefully and understand it fully. In case you sell the unit, hand it on to the next owner.
Keep this manual always with the machine, to enable it to be referred to at any time.
Any other work not covered by this operating manual must not be carried out.
This machine is designed for industrial use by professionals. Only authorized and trained personnel may
operate this machine. This machine is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge. Blastrac BV offers a course on
the use of the machine in order to make the operating and maintenance personnel familiar with all elements of
the machine. Always use common sense when working with machines.
2. Machine description
2.1 900VMB
The Blastrac blast cleaning machine 900-VMB is a vertical blasting machine with a closed abrasive circuit
exclusively designed for the pre-treatment of dry, frost free vertical surfaces. The bouncing impact of metallic
abrasive onto the surface to be treated thoroughly removes surface contaminants, (epoxy) coats on different
types of vertical surfaces. The intended use of this machine is blast cleaning of the following surfaces: Steel,
concrete and stone. The machine may not be used for other purposes. The manufacturer will not be liable for
damage resulting from incorrect usage, in these cases the user assumes all risks. This machine has a Work
Load Limit of 1120kg.
The Blastrac 900-DC filter unit must be connected to the machine in order to separate the dust from the
abrasive. This specially designed dust collection system ensures dust-free operation of the machine and clean
air at the workspace.
1
Mouth seal
6
End-switch for winch
11
Emergency shutdown
2
Air slide
7
Abrasive valve assy
12
Phase sequence light
3
Adjustable swivel castor
8
Cable
13
Power available light
4
Spare shot hopper
9
Endless winch
14
Support dust pipe
5
Cable guide roll
10
Main switch
1
2
3
4
5
6
8
7

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2.2Remote control
The identification numbers on the remote control and the machine must match.
This 4 digit number is indicated as followed: Id.no: xxxx
The identification numbers can be found on the back of
the remote control and inside the electrical box on the machine.
Reset
Emergency
Stop

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2.3 Winches
The endless winches on this machine does
not collect the steel cable, but moves it
through the winch at the desired speed.
Therefore, the lifting height is
determined by the cable length.
Use only Blastrac approved steel cables.
The steel cables can be ordered in every
desired length. See the Service manual
for the correct part number.
The endless winches are provided with an
electro-magnetically released spring brake,
which closes automatically when the
button for UP/DOWN travel is released
and in the case of a power failure.
The winches have an overload detection device in
accordance with EN 1808 built into the winch.
Pressing the emergency stop button shuts down the
entire control unit in the event of an
emergency. The button can be released again by
rotating it in the direction of the arrow and
pulling it outwards.
In an emergency, for example in the case of fire or a
power failure, the load can be lowered or lifted
manually.
Foreseeable Misapplications
Blastrac provides no warranty, accepts no liability and the warranty becomes void in the event of physical
injury or damage caused by the following misapplications of the hoists and safety devices:
• Improper use of the product and its related attachments and accessories
• Use of the product outside the operating range (e.g. overloading)
• Use of unauthorized, dirty or defective wire ropes
• Use of defective or unauthorized attachments and accessories
• Ignoring the safety notices listed in Chapter 3
• Use of non-original parts
• Conversion or changes to the devices supplied by Blastrac
• Using the hoist/safety device after maintenance deadlines have been exceeded
• Improper installation, commissioning, operation and maintenance
• Manipulation of operating devices
• Improper or unauthorized repair
• Restarting operations after safety devices have been actuated without subsequent repair
• Use of the manual brake venting for downward movement (emergencies excepted)
• Introduction of the wire rope into the wire rope outlet instead of the wire rope inlet
• Improper handling (dragging the hoist along the floor, dropping the hoist)
•Blocking the wire rope outlet
• Using the machine to transport people
1a) Wire rope drive
1b) Motor
1c) Gear mechanism
1d) Control unit connection cable
1e) Control box/Terminal box
1f) Hand lever for manual brake venting
1g) Operating hours counter

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Emergency Operation
In emergency situations (e.g. power failure, fire) the hoist can also be lifted purely mechanically.
The manual descent function can be used for the descent and the hand wheel for the ascent.
Manual Descent
By manually opening the hoist motor brake, the load can be lowered under its own weight. This
process is referred to as manual descent and is only allowed to be used for lowering the
load in an emergency. Manual descent needs to be interrupted for five minutes following a
descent of approx. 30 m if such interruptions do not give rise to a hazard.
To prepare for manual descent, remove the brake release lever from the handle on the back
of the hoist or the device specially designed for this purpose and push it through the opening
in the motor guard onto the bracket on the brake (also see Figure 31). If the hoist is equipped
with a brake release lever extension (see Figure 32), you need to remove the safety pin on the
brake release lever extension prior to use.
Once the brake release lever/brake release lever extension is pushed upward, the load begins
to descend in a controlled manner. A centrifugal brake integrated into the hoist ensures that
the speed of descent is limited. You can halt the descent by releasing the brake release lever.
The brakes are to be opened on both winches simultaneously if possible.
If only one person operates the system, the brakes on the hoists are to be opened alternately, so that no
impermissible tilt results. After use, remove the manual descent lever.
Manual descent in case of overloading is prohibited! Manual descent as an alternative to electrical descent is
prohibited and results in increased wear on the centrifugal brake and increases the risk of brake failure!
Once you have made sure that the load-carrying support rope does not descend as a result, the manual
descent function can also be used to perform a functional check on the safety gear to relax the load on the
support rope.
Hand Wheel
During a power failure, the hoist can be lifted with the hand wheel while simultaneously releasing the brake
release lever. To do this, the steps illustrated below in Figure 33 are to be performed:
1. Remove the plastic cover from the motor hood.
2. Place the hand wheel on the motor shaft from above and insert the release lever
through the side opening in the motor hood onto the bracket on the brake.
3. Hold the hand wheel and do not let it go.
4. Push the brake release lever UPWARD.
5. Rotate the hand wheel in an anti-clockwise direction.
If you want to complete the lifting operation, then release the brake release lever. You can also
release the hand wheel afterwards. Now stow the hand wheel and brake release lever back in
their original storage location and replace the plastic cover over the motor hood.
Fig 31 Release the motor brake
Fig. 32 Hand wheel and brake release lever
extension

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As an option, the hand wheel can also be attached to the bottom of the gear shaft. Make sure
that the bottom cover is closed again afterwards.
Action to be taken when an Incident occurs with a Safety Device
Safety devices are to be replaced at all times and sent to Blastrac for
inspection following a safety incident! The renewed use of safety devices
after an incident may lead to malfunctioning and therefore constitute a risk
to life! This is the responsibility of the system operator!
A safety inspection is also to be performed by a qualified person to check whether the safety
device and steel rope are attached correctly, and to check the safety of the steel rope itself.
Figure 33 - Schematic representation of using the hand wheel

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2.4 Steel hoisting cables
The certificates of the steel hoisting cables are provided with the machine, always make sure that the steel
cables have a diameter of 10mm and an appropriate length before using them.
Inspect the steel cables regularly for damages and at least once every week a certified specialist should
inspect the cables. At the back of the manual you will find room to fill in the results of the inspections.
Caution when handling steel cables! Always wear protective gloves.
Use only Blastrac approved steel cables.
Always unwind the cable orderly and without twisting.
Examine the condition of the steel cable according to chapter “Regular checks of hoisting cables”
Never use the steel cable as an attachment rope and never wind it around the load!
The cable must always be able to run out unhindered!
Never pull the steel cable over (sharp) edges!
The steel cable must always be slightly lubricated and free of dirt, dust or shot.
Only use common multi-purpose oil or grease for lubricating the winch and steel cable. Do not use any
lubricants which contain molybdenum disulphide (MoS2) or PTFE!
Rope Types
The following table shows all permissible rope types that can be used in combination with the 900VMB. Use of
a rope with a diameter that is too large or too small leads to an impairment of the hoist function and can result
in the load falling from a height.
Rope
Nominal Rope Ø
Manufacturer
Rope Type
Rope tag
(colored line)
10
10.2 mm
Pfeifer-Drako
5 x K26WS SFC
2160 B sZ
blue
10.2 mm
DWH-Taurus
5 x K26WS SFC
2160 B sZ
green
10.2 mm
Vornbäumen
5 x K26WS SFC
2160 B
green
Before using the 900VMB, a series of safety checks need to be performed, which may need to be repeated
regularly depending on the type of check.
Logbook
The system operator is obliged to keep and organize the upkeep of a logbook in accordance with EN
1808:2015 Section 14.2.5. The following information should be noted:
• Name of the qualified person responsible for the system
• Name(s) of the operator(s) and the date of use
• Serial number of the machine and the safety devices used
• Every instance of operating the system, hoist(s) and safety device(s)
• Wire rope specifications and their respective hours of use
• Reportable incidents and actions taken
• Date and results
o Of safety checks prior to first use
o Of weekly checks
o Of annual checks
o Of general overhauls
o Of repairs
If there is a change in system ownership, the logbook is to be handed to the successor, who should maintain
it. It is for the successor to decide to continue the original logbook or start a new one. The latter must contain
a reference to the original logbook.

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3. Safety
Warning!
Read all safety warnings and all instructions. Failure to follow the warnings and
instructions may result in electric shock, fire, explosions and / or serious injuries.
Only authorized and trained personnel may operate this machine. This machine is not
intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge.
It is the responsibility of the user to analyse the surface to be treated. The surface may not contain any
substances which could pose a fire-, explosion- or health risk when treated. The user should make a risk
assessment on the basis of the information obtained about the surface to be treated and take proper
precautions for the work to be performed.
In case of any inappropriate usage, improper operation or repair, the producer shall be exempt from liability.
3.1 Work area safety
a) Do not use the machine in rain, damp or wet locations.
b) Avoid dangerous environments: do not use in the presence of explosive atmospheres, in the presence
of flammable liquids, vapours, gases or dust. Remove materials / debris that may be ignited by sparks.
c) In some cases sparks could be created by the blast cleaning process.
d) Keep the work area clean and make sure there is enough ambient light on the work area.
Cluttered or dark areas invite accidents.
e) Do not use on wood.
f) Keep children and bystanders away while operating the machine. They are likely not to foresee the
potential dangers of the machine. Distractions could cause you to lose control of the machine.
g) Persons who are not operating the machine must not be permitted to stay in the surrounding area of at
least 15 meter from the machine.
h) Never use the machine when the workfloor is not clear and if there is a risk of stumbling or tripping.
i) Make sure the machine can travel over all inequalities on the surface, small inequalities like weld
seams or joints are no barriers for the machine.
j) Never operate the machine when workplace is wet. Never stay in the rain with the machine.
k) Check if there are any obstacles that can snag the cables or dust hose when the machine is moving.
l) Warning! Make sure that the surface to be treated does not contain dangerous materials
such as: - combustible or explosive dusts or substances.
- carcinogenic or pathogenic substances.
m) It is necessary to provide for an adequate air change rate L in the room if the exhaust air from the
dust collector is returned to the room. Comply with the National regulations.
n) Secure the work area around the machine in public areas providing an adequate safety distance from
the machine. Use a red and white safety chain and danger sign to enclose the work area.`
o) The operator must always be at a safe distance, straight behind the machine with the most optimal
view on the machine and working environment.
p) Never stand directly below the machine.
3.2 Electrical safety
a) Use only extension cables for extending the main cable that are sized and marked in accordance with the
overall power consumption of the machine. Do not use damaged extension cables.
b) Electrical cables must be rolled entirely off of the reels.
c) Any damage to the electric cables and/or electrical components is not permitted.
d) If the power supply cable or plug is damaged, it must be replaced immediately. Only use original Blastrac
parts.
e) The voltage on the identification plate must comply with the power supply.
f) Use an electrical power supply connection with earth connection and earth leakage circuit breaker.
g) The circuit breaker of the power supply must have a ‘’D’’ characteristic. Circuit breakers with a “C” or “B”
characteristic can give problems when switching the machine on.
h) Keep the machine original; The machine is always equipped with an earthed connection, do not
change this and always use earthed cables with an earthed plug.
i) Inspect and test the electrical components regularly. The electrical components have to satisfy with the
requirements set out in the harmonised norm EN60204-1.
j) Always call a skilled electrician or your distributor when you have questions about the safety of the
electrical components.

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k) Work on electrical equipment or operating materials may only be undertaken by a skilled electrician or by
trained persons under the guidance and supervision of a skilled electrician as well as in accordance with
the electrical engineering regulations.
l) Always use tools that are insulated against voltages.
m) Do not abuse the cables. Never use the cables for carrying, pulling or unplugging the machine. Keep
cables away from heat, oil, sharp edges or moving parts. Damaged or entangled cables increase the risk
of electric shock. Do not fold the cable or clamp it.
n) Don’t pull out the power supply cable out by the wire, but by the connector.
o) Be careful with water around the treated surface. Electrical cables must not come into contact with water.
p) The main power switch on the machine must be in the “Off” position before connecting to the power
supply.
q) During a long standstill of the machine, pull out the main plug.
r) If the machine is to be operated using power from a generator, the generator must be operated in
accordance with the current legal regulations and directives in force. (this applies to the protective earth
conductor in particular) in order to ensure that all safety devices are functioning and to eliminate possible
damage to electrical components.
3.3 Personal safety
a) Always wear Personal Protective Equipment while working with the machine.
-Dust mask class FFP3 or higher
-Ear protection
-Safety glasses with lateral protection
-Protecting gloves
-Safety shoes
b) Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from
moving parts.
c) Personnel must tie back long hair and not wear loose clothing or jewellery including rings.
d) Stay alert, watch what you are doing and use common sense when operating the machine.
e) Always seek professional medical attention immediately in case of injury.
f) All persons surrounding the machine should wear Personal Protective Equipment.
3.4 Machine safety
a) Safety functions and operating functions must work correct, test them regularly.
b) No loose bolts and nuts permitted.
c) Never operate machine without the guards and/or safety devices in place.
d) Never change anything on the safety devices on the machine!
e) Do not use the machine when it is damaged.
f) Do not open or remove protective guards while driving gears are running.
g) The temperature of the machine can be above 37° C.
h) The machine will heat up during blasting, don’t risk getting burned, always wear gloves and only touch
the handle grip(s).
i) The machine, specially the handle grip(s) must be free of fats/oils and has to be dry.
j) All repair work has to be done by qualified Blastrac personnel, this guarantees a safe and reliable
machine.
k) Always use original Blastrac spare parts and abrasive. This will ensure the best performance.
Only original parts meet the factory specifications and quality. Otherwise Blastrac BV cannot guarantee
the safety of the machine. The part numbers can be found in the Service Manual.
l) Check the rotating direction of the motor. The correct direction is given with an arrow on the housing of
the motor. If the motor turns the wrong way, stop the machine and switch the phases inside the
connector.
m) If safety-critical changes occur to the machine or its working method, the machine must be shut down
immediately! The cause of the fault must be established, and rectified.
n) In the event of operational malfunctions the machine must be shut down immediately and secured!
o) Never use the machine without a suitable (Blastrac) dust collector!
p) Never stand directly below the machine.
q) Never lift the blast head during blasting! This could cause serious injury to yourself and others around
you! Wait until the blast wheels stand still before pulling the machine from the wall.
r) Avoid excessive inching operation caused by frequent, brief actuation of the control switch.
s) Welding work on the winch and the steel cable is strictly forbidden. The steel cable must not be used as
earth conductor for welding work.

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3.5 Shot/steelblasting safety
a) Never pull the blast head off the surface during blasting! This could cause serious injury to yourself and
others around you!
b) Abrasive can escape from the sides of the blast head at high speed. Wear safety glasses with lateral
protection and close-fitting protective clothing.
c) Check the following parts daily for damage and wear to avoid unnecessary long and costly standstill on
the workplace; blastwheels, abrasive valves, magnet- and rubber sealing;
Replace the parts when you can see obvious signs of wear.
Wear grooves are acceptable until 75% of blade thickness has been worn away.
d) Check the parts of the machine on wear and defects. Remove foreign bodies and dust deposits to prevent
clogging of the system.
e) The cover of the spare shot hopper must be closed to keep the vacuum in the machine.
f) The machine will heat up during blasting, don’t risk getting burned, always wear gloves and only touch
the handle grip(s) and control devices.
g) Check the level of abrasive in the storage hopper before work starts. Refill if necessary.
h) Remove the abrasive from the abrasive storage hopper before storage.
i) In some cases sparks could be created by shot / steelblasting.
Vertical blasting:
a) Check for obstacles near the electric cables or dust hose what can hooks when machine is moving up and
down.
b) The operator must always be at a safe distance, straight behind the machine with the most optimal view
on the machine and working environment.
c) Never pull on the machine during blasting. Wait until the blast wheels stand still before pulling the
machine from the wall.
d) Avoid excessive inching operation caused by frequent, brief actuation of the control switches for
UP/DOWN.
e) When lifting the machine from the ground, always use the lowest lifting speed. The steel cables must first
be tensioned at this speed; they must not be slack when the machine is lifted from the ground.
f) It is forbidden to use the machine for the transportation of persons or goods.
g) Welding work on the winch and the steel cable is strictly forbidden. The steel cable must not be used as
earth conductor for welding work.
h) Only use the Blastrac approved steel cables in appropriate condition. Using any other steel cable voids all
warranty claims against Blastrac BV.
i) Only use common multi-purpose oil or grease for lubricating the winch and steel cable. Do not use any
lubricants which contain molybdenum disulphide (MoS2) or PTFE!
Check points on the hoisting and lifting equipment
j) Inspect the cables, rigging and winch motors for damages before every use.
k) Daily check the functioning of the end-switch for the winch: Press down the actuator by hand, the
machine must not move upwards when the UP-button is then used on the remote control.
l) The hoisting and lifting motors, cables and shackles have to be inspected by a certified expert.
m) Comply with the local regulations regarding the frequency of the inspections (e.g. annually, half-yearly,
quarterly etc.)
n) Since defective cables are a hazard to safe operation, check the steel cables for damage at weekly
intervals in accordance with chapter 6.2 and replace them, as required.
o) In order to increase the service life of the steel cables, make sure that they are clean and slightly
lubricated.
p) After inspection / repairs the enclosed service book at the back of the manual has to be filled in.
q) If damage to one of safety devices, its mounting, the electrical supply cable or the safety rope occurs
during operation, you should stop work immediately and inform the supervisor. All safety-related damage
is to be reported to the system operator and the appropriate logbook entries made.
r) The system is only allowed to be put back into operation once the damage has been repaired. This is the
responsibility of the system operator!
s) During operation, communication between the operator and a competent person must always be ensured.
This is the responsibility of the system operator.

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3.6 Maintenance safety
a) Pull out the main plug before starting inspections and repairing on the machine. The main switch can be
locked in the “OFF” position by using a padlock and placing it through the main switch.
b) Wait for standstill of all drives before any inspections, adjustments and/or maintenance work is started.
c) Block machine in stable position before doing any maintenance work.
d) Failures due to inadequate or incorrect maintenance may generate very high repair costs and long
standstill periods of the machine. Regular maintenance therefore is imperative.
e) Operational safety and service life of the machine depends, among other things, on proper maintenance.
f) Prevent premature wear by keeping the machine as dust free as possible. Clean the machine for this
reason regularly with a dust collector and non-aggressive materials, Never use a high pressure water
cleaner to clean the machine.
g) Do not use any aggressive cleaning materials!
h) Use lint-free cleaning cloths!
i) It is advisable to stock all spare parts or wear parts that cannot be supplied quickly. As a rule, production
standstill periods are more expensive than the cost for the corresponding spare part.
j) The suitable precautions include decontamination before disassembling the machine, adequate filtered
ventilation of the exhaust air from the room in which it is disassembled, cleaning of the maintenance area
and suitable personal protection equipment.
3.7 Dust collector safety by the machine
a) Always use a Blastrac dust collector to ensure a dust-free operation of the machine and clean air at the
workspace. Also the airflow helps to cool the machine and prevents overheating.
b) Read the operating instructions of the dust collector before using it.
c) The dust container/bag of the dust collector must be emptied regularly. Comply with the local waste
treatment regulations considering the removed material.
d) The dust hose must be connected properly with a hose clamp and industrial tape.
e) The dust hose must be undamaged and free of obstructions.
f) Always switch on the dust collector first!
3.8 Transport safety
a) Be aware of your surroundings and machine operating level.
b) The weight of the 900-VMB is 880 kg (without shot, hoses etc.) When transporting the machine with a
crane or lift, use the lifting eyes of the machine.
c) Before every use check the lifting eyes/lugs and welds for:
deformation, damages, cracks, corrosion and wear.
d) Each lifting lug has a WLL of 1500kg.
e) When lifting the machine from the ground, always use the lowest lifting speed. The cables must first be
tensioned at this speed; they must not be slack when the machine is lifted from the ground.
f) During hoisting make sure to be at a safe distance from the machine with the most optimal view on the
machine and working environment.
g) Never stand directly below the machine.
h) When transporting the machine do so in such a manner that damage due to the effects of the use of force
or incorrect loading and unloading is avoided.
i) The lifting eyes/lugs can also be used to fasten the machine on a pallet or during transport.
j) Don’t leave the machine unsecured on jobsites.
k) Park the machine always on a flat horizontal and levelled surface.
l) Remove the abrasive from the machine before transport.
m) Make sure the electrical cable and dust hose are disconnected before transport.
n) Store the cleaned and dry machine in a humid free room. Protect the electrical motor from moisture, heat
dust and shocks.
o) Never use the machine for lifting persons or items.
p) Only lift the machine as shown in the picture below.

14

15
3.9 Markings on the machine
The following stickers are placed on the machine. Meanings of these symbols are:
Type plate:
EU Declaration of Conformity:
Wear a dust mask class FFP2 or
higher.
Hearing protection is obliged.
Safety glasses with lateral protection
are obliged.
CE-mark on this machine.
Wear protecting gloves.
Safety shoes obliged.
Consult the manual before operating
the machine.
Name, address and CE mark.
The machine type.
The net weight of the machine in kilogram.
The year of manufacture.
The serial number of the machine.
Email address, Website, Telephone & fax number.
WARNING! It is not permitted to use
Steel Abrasive harder than 50
Rockwell hardness. Abrasive harder
than 50 Rockwell will damage the
machine housing extremely.
No unauthorised person may operate
this machine.
! Danger Hazardous voltage in motor
even when solid state controller is OFF.
Disconnect main power before servicing
motor, controller or associated wiring.
Lifting point.

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4. Before operation
Before using the machine it is of great importance to inspect the machine.
It is not permitted to use the machine if the machine safety is not according the checkpoints below.
4.1 Daily check points power supply
Use only extension cables for extending the main cable that are sized and marked in accordance with
the overall power consumption of the machine.
Electrical cables must be fully unwind of their reels.
No damage is permitted for electrical cables.
Use an electrical power supply connection with earth connecting.
The main switch of the machine should be put to ‘Off’ before connecting to the power supply.
Make sure the power supply is in accordance with the machine specifications.
The circuit breaker of the power supply must have a ‘’D’’ characteristic. Circuit breakers with a “C” or
“B” characteristic can give problems when switching the machine on.
If the machine is to be operated using power from a generator, the generator must be operated in
accordance with the current legal regulations and directives in force. (this applies to the protective
earth conductor in particular) in order to ensure that all safety devices are functioning and to eliminate
possible damage to electrical components.
4.2 Daily check points of machine
Safety functions and operating functions must work correct.
Check all screws and other fasteners for tightness. No loose bolts and/or nuts are permitted.
Check the electrical components, cables and connections for wear and/or damages.
Dust hose connection must be reliable: use hose clamps and industrial tape.
Dust hoses must be undamaged and free of obstructions.
Make sure that the bigbags are empty and connected properly.
Check the following parts for damage and wear: blast wheel, cage, impeller, blast housing, mouth seal,
winches and hoist cables. Replace the parts when you can see obvious signs of wear.
Wear grooves are acceptable until 75% of blade thickness has been worn away.
Check de parts of the valves on wear and defects. Remove foreign bodies and dust deposits to prevent
clogging of the machine.
The cover of the spare shot hopper must be closed to keep the vacuum in the machine.
4.3 Check points on the hoisting and lifting equipment
Inspect the cables, rigging and winch motors for damages before every use.
Daily check the functioning of the end-switch for the winch: Press down the actuator by hand, the
machine must not move upwards when the UP-button is then used on the remote control.
The hoisting and lifting motors, cables and shackles have to be inspected by a certified expert.
Comply with the local regulations regarding the frequency of the inspections (e.g. annually, half-
yearly, quarterly etc.)
Since defective cables are a hazard to safe operation, check the steel cables for damage at weekly
intervals in accordance with chapter “Regular checks of hoisting cables” and replace them, as required.
In order to increase the service life of the steel cables, make sure that they are clean and slightly
lubricated.
After inspection / repairs the enclosed service book at the back of the manual has to be filled in.

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4.4 Testing the Proximity-switch
The Proximity-switch detects if the machine is sucked against the surface to be treated.
In the unlikely event that the machine comes from the wall during blasting, the proximity-switch will
immediately close the shotvalves at double speed, minimising the damage and danger.
Make sure the dusthose is connected and the dustcollector is ON.
Observe the lights on the
remote control and
proximity-switch.
Place a metal object in front
of the proximity-switch.
The lights on the remote
control and proximity switch
should light up.
Remove the metal object.
The lights on the remote
control and proximity switch
should go out.
DO NOT PROCEED IF THE PROXIMITY-SWITCH DOES NOT WORK!

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4.5 Testing the End-switch for winch
The end-switch for the winch stops the movement in the upward direction when the end-switch is activated.
If the end-switch is activated, only the downward movement of the machine is possible.
This safety feature will protect the machine and rigging from getting crushed by moving too far upwards.
Make sure the dusthose is connected and the dustcollector is ON.
Make sure there are no steel cables in the winches.
Place a metal object in front of the proximityswitch.
Turn the winches ON.
Press the end-switch
down, the winches
should stop turning.
Release the end-switch,
the winches should start
turning again.
DO NOT PROCEED IF THE END-SWITCH DOES NOT STOP THE WINCHES!

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5. Operating
During operating the 900-VMB, the following additional safety instructions must be followed closely.
Before switching on the machine make sure that no-one can be endangered when the machine starts up.
Make sure that no vehicles, such as forklift trucks and other equipment run over the electric cable and the dust
hose.
5.1 Before switch on
Fill the spare shot hopper with the selected abrasive up to the square tube of the castor wheel clamp.
Check the level regularly. When level is too low this could wear out the abrasive valves in short time.
The magnets of the mouth seal must be covered over the whole surface with abrasive.
Connect the blast machine and filter unit with the dust hose. This connection must be reliable with a
hose clamp and tape.
Fasten the power cable into the cable pull relief.
Connect the power supply cable of the filter unit with the generator. Be sure that electrical power
supply is correct.
The hoist cables must be free from dust, abrasive and damages.
Put in the hoist cables through the cable guide rolls (item 5
machine description) carefully. Switch on the winch motors and
let it run on minimum speed. Keep pressure on the cable until
the winch motor takes it over and pulls the cable through the
winch.
Cover magnets
with abrasive
All persons in the proximity of the machine must wear safety glasses with lateral
protection as well as safety shoes and ear protection. The operator is obliged to wear
close-fitting protective clothing and a dust mask.

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5.2 Adjust cable guide rolls and swivel castors
The mouth seal must be parallel to the wall when the machine
is hanging freely in the hoist cables. The position of this mouth
seal can be changed by loosening the 2 bolts of the cable guide
rolls.
When the guide rolls are in good position the swivel castor must be adjusted close to the wall. Keep a distance
of 10 to 20 mm between the swivel castor and the wall.