POOL PAL BLAST MACHINE
Page 10
© 2008 CLEMCO INDUSTRIES CORP.
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www.clemcoindustries.com
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Manual No. 24813
5.0 SERVICE
MAINTENANCE
WARNING
Failure to observe the following before
performing any maintenance could cause
serious injury or death from the sudden release
of compressed air.
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Depressurize the blast machine.
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Lockout and tagout the compressed air
supply.
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Bleed the air supply line to the blast
machine.
5.1
Removing damp abrasive from the blast
machine.
5.1.1
To clear a minor blockage caused from damp
abrasive, while blasting, rapidly open and close the
choke valve several times.
5.1.2
For more difficult blockages, proceed as follows:
See Section 5.2 to check for obstructions in the metering
valve.
5.1.3
With the blast machine off, disconnect the blast
hose and remove the gasket from the quick coupling on
the machine.
5.1.4
Place the machine so that the outlet is pointed
away from any objects or persons.
WARNING
Place the machine so that the outlet is pointed
away from any objects or persons. Stand clear
of the path of exiting abrasive. It may come out
at high velocity. Impact from exiting abrasive
could cause severe injury.
5.1.5
Close the choke valve and fully open the
abrasive
metering valve. Pressurize the machine to
force out any damp abrasive.
5.1.6
When the obstruction has been removed,
depressurize the machine. Remove the nozzle and
nozzle washer, and reconnect the hose. Open the choke
valve and close the abrasive metering valve. Pressurize
the machine to clear the hose. When the hose is
cleared, depressurize the machine so the nozzle and
nozzle washer can be attached.
WARNING
The threads on the nozzle and nozzle holder
must be inspected each time the nozzle is
secured to the holder. Check the threads for
wear, and make sure nozzle holder securely
grips the nozzle. The nozzle washer must also
be inspected for wear. Worn nozzle washers
cause thread erosion. A loose fitting nozzle may
eject from the holder under pressure and could
cause severe injury.
5.1.7
With the hose cleared, start the machine using
normal procedures.
5.2
Clearing obstructions in the abrasive
metering valve and blast machine.
5.2.1
If the nature of the obstruction permits emptying
the machine of abrasive, follow the instructions
per
Section 3.8.
5.2.2
Turn off the compressed air supply. Lockout and
tagout the air supply, and bleed the air supply line to the
blast machine.
5.2.3
Remove the inspection door and check the
inside of the machine for obstructions from foreign
objects
5.2.4
Check the inside of the machine for signs of
moisture. If moisture is present, condensation is in the
compressed air, and must be eliminated.
5.2.5
Make sure the inspection door gasket is in good
condition and that it is correctly in place before bolting
the door onto the machine.
5.2.6
Check to make sure all inspection door and
hoses are secure before starting the compressed air
supply.
5.3.
Replacing the Pop-Up Valve, Figure 9
5.3.1
All service on the pop-up valve must be done
with the compressed air off and the air supply locked-out
and tagged-out.
5.3.2
To gain access to the pop-up valve, remove the
inspection door assembly.
5.3.3
Using a small pipe wrench, unscrew the pop-up
valve guide by turning it counterclockwise. Remove the
pop-up valve and guide from the machine.
