Guyson Formula Blast Manual
Guyson Formula Blast Manual
Table of contents
1. Introduction ......................................................................................................................................... 3
1.1 Safety recommendations .............................................................................................................. 3
1.2 Electrical specification .................................................................................................................. 3
2. Data sheet ........................................................................................................................................... 4
2.1 General information ...................................................................................................................... 4
2.2 Air consumption tables ................................................................................................................. 4
2.2.1 Air flow measured in m³/hr at different pressures measured in bar ....................................... 4
2.2.2 Air flow measured in CFM at different pressures measured in psi ........................................ 4
3. Installation ........................................................................................................................................... 5
3.1 Location ........................................................................................................................................ 5
3.2 Assembly ...................................................................................................................................... 5
3.2.1 Compressed air connections ................................................................................................. 6
3.2.2 Electrical connections ............................................................................................................ 7
4. Testing installation .............................................................................................................................. 8
4.1 Testing installation procedure ....................................................................................................... 8
4.2 Media levels .................................................................................................................................. 9
4.2.1 Adding media to hopper ......................................................................................................... 9
5. Machine settings ............................................................................................................................... 10
5.1 Blast settings............................................................................................................................... 10
5.1.1 Blasting pressure ................................................................................................................. 10
5.1.2 Media pick-up tube ............................................................................................................... 11
5.1.3 Stand-off distance ................................................................................................................ 12
5.1.4 Angle of blasting ................................................................................................................... 12
5.2 Extraction settings ...................................................................................................................... 13
5.2.1 Dust collector ....................................................................................................................... 13
6. Operation .......................................................................................................................................... 14
6.1 Operating procedure ................................................................................................................... 14
7. Maintenance ...................................................................................................................................... 15
7.1 Daily ............................................................................................................................................ 16
7.1.1 Breather pad ........................................................................................................................ 17
7.1.2 Viewing window .................................................................................................................... 18
7.1.3 Empty dust collector bin ....................................................................................................... 18
7.1.4 Filter cleaning ....................................................................................................................... 19
7.1.4.1 Replacing the filter sleeves on an F21/F41 dust collector ............................................ 20
7.1.5 Compressed air filter ............................................................................................................ 20
7.1.6 Hoses ................................................................................................................................... 21
7.1.7 Blast nozzles ........................................................................................................................ 22
7.1.7.1 400 Blast gun ................................................................................................................ 22
7.1.7.2 400 Trigger gun ............................................................................................................. 22
7.1.7.3 Blast nozzle ................................................................................................................... 22
7.1.7.4 Airjet .............................................................................................................................. 24
7.1.7.5 Media entry ................................................................................................................... 24
7.1.8 Door seals ............................................................................................................................ 24
7.1.9 Topping up media ................................................................................................................ 24
7.2 Weekly ........................................................................................................................................ 25
7.2.1 Gauntlets .............................................................................................................................. 25
7.3 Monthly ....................................................................................................................................... 26
7.3.1 Emptying media ................................................................................................................... 26
8. FAQ’s ................................................................................................................................................ 27
9. Spares and servicing......................................................................................................................... 28
9.1 Recommended spares list .......................................................................................................... 29
10. Appendices ..................................................................................................................................... 31
1. Introduction
This manual should be regarded as part of the product and must be retained for the life of the
machine. The manual must be passed to any subsequent owners of the machine.
Any amendments should be attached to the original manual. Machine identification and serial number
can be found on the identification plate fixed to the machine body.
Users are responsible for ensuring that they have implemented any current regulatory requirements,
e.g. COSHH, to deal with any potential risks and/or hazards associated with their processes.
The ATEX Directives 2014/34/EU (product requirements) and 99/92/EC (user requirements) are
implemented by the Equipment and Protective Systems intended for use in potentially explosive
Atmospheres Regulations 1996 (EPS and the Dangerous Substances and Explosive Atmosphere
Regulations 2002 (DSEAR) respectively.
We are able to provide equipment that is suitable for use in a hazardous area, and/or equipment that
is suitable for use when a hazardous area is created within a system, but it is the end users’
responsibility to classify the area in which the equipment is to be used and/or the explosivity of any
internal atmosphere created within the system. This is defined in Section 2, Article 3 to 9 of the
99/92/EC Directive (ATEX 137).
Unless we have been advised otherwise, we have to assume that the equipment will be used in an
area that is not classified as potentially explosive, and uses a process which will not create an
explosive atmosphere within the equipment.
BSEN 60204-1:2006
IEC 60204-1:2005
2. Data sheet
2.1 General information
Cabinet Formula 1200 Formula 1400 Formula 1600
3. Installation
The system comprises of the following unit:
• Formula Cabinet
• Dust Collector
Remove packing materials and check inside cabinet for loose items.
3.1 Location
The equipment must be located on a clean, dry surface.
The Formula 1400 and 1600 Cabinets are designed to stand on the floor, the Formula 1200 Cabinet
is designed to stand on a workbench approximately 700 mm high. Locate the cabinet in the required
position and orientation; always allow sufficient room around the units to fully open doors/lids and to
give access for operation and maintenance.
Care should be taken to ensure all parts of the system are level
3.2 Assembly
Connect the cabinet outlet on the blast cabinet to the dust collector inlet:
Connect the flexible extraction hose from the cabinet outlet to the dust collector
inlet using the sealing bands and hose clamps supplied.
The machine requires a compressed air supply at a maximum of 6.0 bar (90 psi) at the filter inlet. This
should be supplied through pipework with a minimum bore of 10mm with no restrictive air fittings. The
filter inlet has a ¼” BSP fitting, as shown below.
Connect the main compressed air supply to the pneumatic isolator valve
Take care that any jointing material (e.g. PTFE tape) does not enter the pipework.
Please see “Electrical Installation of Dust Collectors and Cyclones” in the appendix
PLEASE NOTE: It will be necessary to fit a bulb to the Bulkhead Light Fitting supplied
for Cabinet Illumination. Please note the maximum recommended power per lamp
bulb is 60 watts.
4. Testing installation
4.1 Testing installation procedure
After completing all the connections the cabinet operation should be checked.
On a F21/F41 dust collector the motor is inside. Unclip the catches and remove the
front panel to check its rotation.
The best way to do this task is by starting then stopping the dust collector and watch
the fan as it slows down.
• Depress the foot pedal (or trigger valve for Formula 1200)
• Check for a steady air blast from the gun and for possible leaks
• Remove arms from gauntlets, isolate cabinet from compressed air supply and ensure all
compressed air is discharged from the system, open cabinet and add blast media.
5. Machine settings
5.1 Blast settings
The blast settings should be set in the order they appear in the following sections.
• Noise increases
The greater the flow of media from the mixer box to the blast gun, the higher the rate of wear on
media hose, blast nozzle.
• Check that there is a supply of free-flowing, dry media to the mixer box
• With compressed air flowing through the blast gun gradually move the pick-up tube into the
mixer box with the chamfer facing upwards while a colleague watches the media flow from the
nozzle.
The pick-up tube is in the right position when you are just able to see the media stream
leaving the nozzle. If the media stream is intermittent then the pick-up tube has been pushed
too far in.
• Further adjustment should not be needed whilst using the same media
Retaining screw
Increase
media flow Decrease
media flow
Pick-up tube
The impact of the media can be affected by the stand-off distance and the air pressure. The type of
media will influence this but a larger blast area may be achieved by increasing both the stand-off
distance and the blast air pressure.
Blast guns should be angled to minimise interference between the outputs from different guns. This
will avoid disrupting the speed and direction of media between nozzle and component.
Always position guns pointing away from any cabinet openings; this minimises the risk of media being
blasted out of the cabinet.
The suction in the dust collector should be such that a minimum amount of media is transferred into
the dust collection system.
When setting the dampers/blast gates always keep the extraction air-flow to the minimum needed to
avoid pressurisation of the cabinet during blasting. Over time the filters in the dust collector will
become clogged with dust, and an increased air-flow may be necessary between filter changes and
maintenance. In systems with a cyclone the extraction should be set so that a minimum amount of
media is transferred into the dust collection system.
Always check the waste bin for good media when adjusting any settings.
6. Operation
6.1 Operating procedure
• Perform daily maintenance tasks (see section 7.1)
• Position the blast gun so that they will be easily reached when using the gauntlets/gloves and
sleeves
• Depress the foot pedal/trigger valve and media will exit from the gun nozzle
• Move the nozzle jet across the component surface at a suitable distance, refer to blast gun
settings (see section 5.1.3)
• The door can now be opened, and the component can be removed for inspection
• Further blasting may be necessary, or an adjustment to one or more of the machine or blast
settings (see section 5.1)
7. Maintenance
The frequency of any maintenance schedule and the replacement of parts are determined by the
amount of use and operating conditions. Maintenance intervals will be determined by experience of
machine-use over time. The following periods are recommended for initial trial periods until a pattern
is established.
ENSURE ALL AIR SUPPLIES ARE TURNED OFF AND THE SYSTEM IS
FULLY EXHAUSTED BEFORE PERFORMING ANY MAINTENANCE
7.1 Daily
• Inspect breather pad (see section 7.1.1)
• Inspect the viewing window and anti-frost sheet (see section 7.1.2)
• Clean the filters every four working hours (see section 7.1.4)
• Check media levels regularly and top up if necessary (see section 7.1.9)
Remove and replace the breather pad (Y1AB0001). Return the breather bezel to
the locked position.
7.1.6 Hoses
Inspect the blast nozzle for wear. When the bore size has increased by 20% (6mm bore
@ 20% = 7.2mm) then the nozzle needs to be replaced. The effective bore of a nozzle
can be quickly checked by use of a twist drill bit.
The nozzle should be withdrawn from the gun body after 8 hours blasting and rotated by
5° to avoid uneven wear.
The picture below shows an extremely worn nozzle. Your nozzle should reach this
state as it will decrease its blasting effectiveness and may also damage the blast
gun.
7.1.7.4 Airjet
The media entry should be withdrawn from the gun body and inspected for wear on a regular basis.
7.2 Weekly
• Inspect gauntlets for wear (see section 7.2.1)
7.2.1 Gauntlets
7.3 Monthly
• Drain old media and discard (see section 7.3.1) and refill system with new media (see section
4.2)
• Once clean leave dust extraction on for 10 minutes to clear pipes of residual media
• When motor has stopped remove pick-up tube from mixer box
• Place container under mixer box, unclip and remove mixer box and collect media
Refer to 5.1.2 on resetting the pickup tube after emptying the media.
8. FAQ’s
IF REQUIRED ENSURE ALL AIR SUPPLIES ARE TURNED OFF AND THE
SYSTEM IS FULLY EXHAUSTED BEFORE PERFORMING ANY
MAINTENANCE
Possible cause Bore of air-jet in blast gun blocked Unblock and clean
Possible cause Fault with customer air supply Customer to check and correct
Possible cause Compressor fault/not to specification Customer to check air supply and
correct
Incorrect mains supply pipe diameter Refer to Data sheets, change pipe
If problems are ongoing please conduct a full maintenance service of the equipment
or contact Customer Services to book a Guyson Service Engineer visit
If an item has broken that is not listed in the maintenance section and cannot be identified from the
assembly drawings in the appendix of this manual then please contact Guyson International on the
details below for further help.
Tel: 01756-799911
Fax: 01756-790213
E-mail: info@guyson.co.uk
Website: www.guyson.co.uk
10. Appendices
10.1 Electrical installation of dust collectors and cyclones
Guyson dust collectors and motorised cyclones (whether for single or three phase supplies), when
supplied to complement blast cabinets, are fitted with starters. These should be wired from the
customer’s switched fused isolator. The starter needs to be wired up by a suitably qualified electrician;
electrical schematics for the single and three phase systems are attached.
* Fuses should be sized to comply with full load current. When sizing fuses, smallest fuse rating
should be used to suit motor and starting characteristics.
If a problem occurs with installation then Guyson International should be contacted to provide support