ECCO
EIB 12/06-01
9836 3178 01
2007-10
ENGLISH
• Operator’s Instructions
Equipment for free-jet blasting.
•
At the end of each working day the abrasive valve must be closed
and residual abrasive blown out of the branch pipe and hose.
•
If the blast unit is to be taken out of service for a prolonged period
it must be emptied of blasting medium and stored in a dry place.
•
The lifting eye is approved for loads of up to 1400 kg.
Maintenance
•
The interior condition of the abrasive container should be in-
spected regularly for corrosion.
•
Unscrew the safety valve (see J Fig.1), including the tee, from the
abrasive container every now and then and clean out any abra-
sive found in the tee.
•
Check wear and consumption parts (parts marked with bold type
in the part numbering according to the spare parts list) regularly.
Change damaged or worn parts. The cone in the diaphragm valve
and the valve discs in the abrasive valve are reversible.
Starting
(see Fig. 1)
1. Fill abrasive into the blast unit.
2. Check that the air hose, control hoses (twinline hose) and the
blast hose are right connected to the blast unit and the blast
nozzle is correctly tightening in the holder on the blast hose.
3. Close manual drain valves on the moisture trap and the air filter.
4. Connect compressed air.
5. Put on the blast helmet (S) and adjust the air pressure (Q) 5–7 bar.
6. Adjust the worm or cold air to the blast helmet on the air thermostat
(T) (the fig. shows the warm connection, for cold air reverse the
thermostat).
For warm air:
Warmer air is obtained when the air flow is throttled
with the control valve.
For cold air:
Colder air is obtained when the control valve is opened
but the air flow is reduced.
7. Check that the valve (I) is fully open. This valve is used to throttle
the air supply to the abrasive valve when small blast nozzles are
used, or as a shock valve (rapid closing-opening) if the flow of
abrasive to the blast nozzle becomes uneven.
8. Hold the blast hose and the blast nozzle firmly and press in/
down the safety catch (F) and depress the lever on the dead-
man’s handle (E).
9. Set the flow of abrasive to the blast nozzle with the lever (L) on
the blast valve (K). When the lever (L) is moved towards the
adjustable stop the flow of abrasive increases and when it is
moved towards the fixed stop the flow decreases. Adjust the
sand valve to smallest amount possible. It is wrong to use more
sand than necessary.
10. Set the adjustable stop for the lever (L) on abrasive valve. Thus,
after closing, it is possible to open rapidly again to the previously
set rate of abrasive flow.
Stopping
(see Fig. 1)
Release the lever (E) on the dead-man’s handle. The air supply is
thus cut off and the unit is depressurized.
OBS!
Blasting can also be stopped,
emergency stop
, by
disconnecting the quick coupling (G) on the blue operating air hose
from diaphragm valve.
After finished blasting or when making a break, the quick coupling
(G) shall
always
be disconnected from the diaphragm valve.
BRC = Blast unit with pneumatic remote control device
(Remote
control with dead-man’s handle and double control hoses).
Use Ecco genuine parts and accessories only for best
function and safety.
Before starting, read through all instructions carefully.
Ecco BRC 120 Pack, -200 Pack, -300 Pack
Important
The safety measures prescribed in the relevant regulations
must be complied with.
Always wear protective garments when blasting, blast helmet,
blast gloves and blast overall.
The breathing air supplied to the blast helmet must be free
of oil and filtered through an effective filter.
Use only approved air hose for breathing air.
Never aim the blast nozzle at a person or towards any part of
the body.
Use only approved abrasives.
Wear suitable eye protection when filling unit. There is a
possibility that some abrasive may be blown back as the
pop-up valve seats.
Depressurize unit before loading media or any maintenance
is performed.
Make sure that the claw couplings on air- and blast hoses are
secured by means of lock springs.
WARNING
•
Blow the air hose clean before connection.
•
The compressed air to the blast unit must have a shut off valve.
•
The compressed air must be dry and clean.
•
Drain the condensate out of the moisture trap and the air cleaner
every day (see O and R Fig.1). MTA are also equipped with auto-
matic drain system.
•
The size of the blast hose must be suited to that of the blast
nozzle (usually 3 to 4 times the bore of the nozzle).
•
The blast hose must be trimmed at right angels before a nozzle
holder or claw coupling is fitted.
•
To prevent unnecessary wear on the blast hose, sharp bends on
the hose must be avoided.
Principal data
Type
Max. working
Air hose
Container
Weight
pressure
connection
volume
Ecco
bar
l
kg
BRC 120 Pack
10.5
Coupling
a)
120
146
BRC 200 Pack
10.5
Coupling
a)
195
194
BRC 300 Pack
10.5
Coupling
a)
290
220
a)
With nipple for hose bore 40 mm (1 1/2").
