BNP
®
65 and 220 SUCTION BLAST CABINETS
Page 29
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 21309, Rev. J 01/19
8.10.2
Air jet may be too large for nozzle. Refer to the
table in Paragraph 1.10.1.
8.10.3
Blast pressure too high. Adjust blast pressure,
per Section 5.1.
8.11
Blasting does not begin when the foot pedal
is pressed
8.11.1
Door
interlocks
not
engaging.
Check
adjustment, per Section 5.7.
8.11.2
Blocked or leaking control lines. Check all
urethane tubing for blockage or leaks.
8.11.3
Foot-pedal valve malfunction. Check foot-pedal
alignment, and inlet and outlet lines for pressure.
8.11.4
Make sure lines are not reversed on the foot
pedal or pilot regulator. Refer to the schematic on Page
36, Figure 43.
8.11.5
Pressure regulator may be set too low or OFF.
Adjust blast pressure, per Section 5.1.
8.11.6
Make sure that the air compressor is operating
and air-supply valves are open.
8.11.7
Check the nozzle to see if it is plugged. Refer to
Section 8.4.
8.12
Blasting continues after the foot pedal is
released
8.12.1
Make sure the 3-way valve in the foot pedal
exhausts air when the pedal is released. If it does not
exhaust, check the inbound air line for blockage; if no
blockage, replace the valve.
8.13
Media buildup in cabinet hopper; media does
not convey to reclaimer
NOTE: Do not pour media directly into the cabinet
hopper, as overfilling may occur.
Overfilling will result
in media carryover to the dust collector and possible
blockage in the conveying hose.
8.13.1
Exhauster motor rotating backward. The motor
should rotate as indicated by the arrow on the exhauster
housing. If it does not rotate in the proper direction,
lockout
and
tagout
electrical power and switch the
motor leads, as shown on the motor plate. Refer to the
system’s wiring schematic. Refer to Sections 2.5.1 and
2.5.2.
8.13.2
Dust-collector damper closed too far, restricting
air movement through cabinet. Adjust static pressure per
Section 5.4.
8.13.3
Dust collector filter cartridge(s) clogged. Refer to
the dust-collector owner’s manual noted in Section 1.1.1.
8.13.4
Hole worn in flex hose between cabinet hopper
and reclaimer inlet or between the reclaimer outlet and
dust-collector inlet. Inspect hoses and replace them as
needed and route them with as few bends as possible to
prevent early wear.
8.13.5
Reclaimer door open. DO NOT operate unless
door is closed.
8.13.6
Obstruction in flex hose. Remove hoses and
check for blockage.
8.14
Static shocks
8.14.1
Cabinet and/or operator not grounded. Abrasive
blasting generates static electricity. The cabinet must be
earth-grounded to prevent static buildup. Refer to
Sections 2.2.1 and 2.4. If shocks persist, the operator
may be building up static. Attach a small ground wire,
such as a wrist strap, from the operator to the cabinet.
8.14.2
Gloves wearing thin. Inspect gloves and replace
them as needed.
8.14.3
Avoid holding parts and blasting off the grate.
Static will buildup in the part if not dissipated through the
metal cabinet. If blasting parts off the grate cannot be
avoided, attach a ground wire between the cabinet and
the part.
8.15
Dust leaking from cabinet
8.15.1
Damaged door gaskets. Inspect and replace
damaged gaskets.
8.15.2
Refer to Section 8.13.
8.16
Dust leaking from dust collector
8.16.1
Cartridge(s) not seasoned; refer to the dust-
collector owner’s manual to season cartridge(s)
8.16.2
Damaged or loose filter cartridge(s). Inspect
filters, replace as needed.
8.16.3
Refer to the dust-collector owner’s manual to
service the dust collector.
