Problem
Problem
Problem
Cause
Cause
Cause
Solution
Solution
Solution
The adjustable blast regulator
is not adjusted to the correct
pressure.
Adjust the blast regulator to the desired pressure while the
blast control is engaged.
The tubing to the main air
regulator is not properly
connected or there are air
leaks in the fittings or tubing.
See the
. Check for leaks at
connection points.
The adjustable blast air
regulator is malfunctioning.
Clean or replace the adjustable blast air regulator.
No blast air flow when
the blast control switch
(B) is engaged. The
water pump does cycle
while the blast control
switch is engaged.
The main air regulator is
malfunctioning.
Disassemble the main air regulator and inspect
components. Replace or repair parts as necessary. See
The emergency stop (Q) is
engaged.
Disengage the emergency stop (Q).
The air supply is inadequate.
Make sure the air compressor is capable of supplying
the minimum air flow requirement for your system (see
Technical Specifications, page 66
for more information).
Make sure the air inlet pressure gauge reads 100-175 psi
(6.8–12 bar, 0.68–1.2 MPa). If the gauge does not read
100–175 psi, check the air compressor for proper setup.
The electric blast control
circuit is malfunctioning.
Make sure proper 12V supply is connected, and at full charge.
Inspect the cable for damaged or shorted wiring. Check
the 3A fuse and replace if necessary. Check for continuity
through the connectors on the control box (P) and all external
cables. Check continuity through the electric blast control
switch (the switch is normally open). If all above items are
functional, replace the 4-Way solenoid valve.
No blast air flow when
the blast control switch
(B) is engaged. The
water pump does
not cycle while the
blast control switch is
engaged.
The pneumatic blast control
circuit is malfunctioning.
Actuate the blast control switch (B) and check for proper
spool valve actuation in the 4–way valve. If no actuation
occurs, check the blast control switch by disconnecting the
yellow tube at the enclosure male quick-disconnect and
engage the control switch. If no air comes from the fitting,
check the pneumatic blast control filter. If the filter is clean,
replace the pneumatic blast control switch. If the switch is
functioning, make sure the yellow tubing inside the control
box (P) is properly connected and clear of obstructions. If
the tubing is clean, remove the exhaust mufflers from the
4-way and check for debris. Clean the ports and replace
the mufflers if necessary. If all above items are functional,
replace the 4-way solenoid valve.
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