SENTINEL MEDIA METERING VALVE
Page 7
5.1.9.1
Fully open the media control valve, (Fully open
is when the metering handle is fully left). While blasting,
close the choke valve to force out small obstructions or
wet abrasive.
To avoid serious injury or death, depressurize
the blast machine, lock out and tag out the
compressed air supply before continuing.
5.1.9.2
For larger obstructions shut the machine down
to examine the abrasive valve. Remove the inspection
plate from the flanged adaptor and clear obstruction.
Do not stick fingers into the piston area of the
inspection opening. The piston is under spring
pressure, and could suddenly close when the
obstruction is cleared.
5.2
Abrasive flow does not stop when ACS valve
is turned off.
5.2.1
Control air is not exhausting from the valve or
control unit. Check the exhaust muffler for blockage and
check the control handle per the control handle manual.
5.2.2
Worn valve seat.
5.2.3
Worn shut-off piston.
5.2.4
Obstruction on the valve seat. See Section
5.1.9.
5.3
Metering handle will not move.
5.3.1
Damp or hardened abrasive packed around
metering plate. Disassemble valve to clean.
5.4
Air leaks through relief hole in cylinder cap.
5.4.1
Worn piston cup.
5.5
Air leaks through relief hole in valve body
(spring chamber).
5.5.1
Worn seals in wear sleeve, or worn O-ring
between the valve body and wear sleeve.
5.6
Abrasive flow decreases after a short period
of time after blasting starts.
5.6.1
Insufficient air supply causing control pressure
to drop, in turn closing the valve. Check for undersized
air supply hose, and the CFM of compressor verses cfm
consumption of the nozzle.
5.6.2
Abrasive bridging in the blast machine. This is
usually caused from using very fine abrasive, or from
moist air. See Section 4.1.
WARNING
6.0
ACCESSORIES and REPLACEMENT PARTS
6.1 Conversion
Kits
Converts fine-mesh valve to standard-use ............ 22848
Converts standard-use valve to fine-mesh ............ 22849
WARNING
6.2 Accessories for Use with Non-Clemco
Remote Control Applications, Figure 5
Item Description .............................................Stock No.
1.
Adaptor, straight
1/8"
NPT ............................................. 01940
1/4”
NPT ............................................. 02494
2.
Adaptor, elbow
1/8"
NPT ............................................. 02827
1/4”
NPT ............................................. 02513
3.
Connector, 1/8" brass ............................. 01962
4.
Breather muffler, 1/8" .............................. 07657
5.
Valve, 3-way, ACS .................................. 07658
6.
Hose, 3/16” coupled
3-foot
length ....................................... 02498
5-foot
length ....................................... 03083
Figure
5
Item 5 may be remotely
mounted using a hose
between the valve and
Sentinel
6
5
4
3
1
1
2
