BNP DOUBLE 65 and DOUBLE 220 - DUAL STATION SUCTION CABINET Page 19
© 2016 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 22963 Rev. D, 07/16
8.0 TROUBLESHOOTING
WARNING
To avoid serious injury, observe the following
when troubleshooting.
Turn OFF the compressed air supply,
bleed the supply line and lockout and
tagout the air supply.
If checking the controls requires air,
always enlist the aid of another person to:
•
Hold the blast gun securely.
•
Operate the foot pedal.
Never bypass the foot pedal or wedge it in
the operating position.
Never bypass the door interlock system.
8.1 Poor
visibility
8.1.1
Dirty filter cartridge(s) Pulse cartridge and empty
dust container regularly. When using an RPC or RPH,
refer to the reverse-pulse dust collector manual to adjust
pulse pressure and pulse sequence.
8.1.2
Exhauster motor not operating. Check voltage to
motor and motor wiring.
8.1.3
Check rotation of exhauster motor; the motor
should rotate as indicated by the arrow on the housing.
If it does not rotate in the proper direction,
lockout and
tagout power
and switch the motor leads as shown on
the motor plate. Refer to Section 2.5.
8.1.4
Using friable media that rapidly breaks down, or
using media that is too fine or worn out.
8.1.5
Dust collector ventilation-damper closed too far
restricting air movement through the cabinet. Adjust
static pressure per Section 5.4.
8.1.6
Cabinet air-inlet damper closed too far restricting
air movement through the cabinet. Adjust damper per
Section 2.6 and 5.6.
8.1.7
Reclaimer door open.
8.1.8
Hole worn in flex hose between cabinet hoppers
and reclaimer inlet or between the reclaimer and dust
collector. Replace hose and route it with as few bends
as possible to prevent wear.
8.1.9
Obstruction in flex hose between the cabinet
hoppers and reclaimer inlet.
8.2
Abnormally high media consumption
8.2.1
Door on reclaimer open or worn door gasket. Air
entering the reclaimer around the door will cause media
carryover to the dust collector. DO NOT operate unless
all doors are closed.
8.2.2
Dust collector ventilation-damper open too far.
Adjust static pressure per Section 5.4.
8.2.3
Media may be too fine or worn-out.
8.2.4
Using friable media that rapidly breaks down.
8.2.5
Blast pressure too high for the media, causing
media to break down.
8.2.6
Hole worn in reclaimer, or leak in reclaimer
seams. Check entire reclaimer for negative-pressure
leaks.
8.2.7
If using media finer than 180-mesh, the inlet
baffle of the reclaimer may need to be removed. Refer to
Section 1.8.6.
8.2.8
Optional externally-adjustable vortex cylinder
out of adjustment. Adjust per Section 5.5.
8.3
Reduction in blast cleaning rate
8.3.1
Low media level reducing media flow. Check
media level and replenish or replace as needed.
8.3.2
Media/air mixture out of adjustment. Adjust
metering valve per Section 5.3.
8.3.3
Reduced air pressure. This may be caused by a
malfunctioning regulator, a dirty filter element in the air
filter, partially-closed air valve, leaking air line, or other
air tools in use.
8.3.4
Blockage in media hose or gun. Blockage may
occur as a result of a damaged or missing reclaimer
screen or incorrect metering valve adjustment permitting
heavy media flow. Adjust metering valve per Section 5.3.
8.3.5
Worn gun parts such as nozzle or air jet. Inspect
and replace all worn parts.
8.3.6
Worn media hose. Check hose for leaks and
soft spots. Replace worn or damaged hose.
8.3.7
Air jet in gun out of adjustment. Check
adjustment per Section 5.2.
8.3.8
Moist media. Frequent bridging or blockage in
the area of the metering valve can be caused by
moisture. Refer to Section 8.5.
