Contractor 15205, Instructions Manual

Page: 26 / 120

ENGLISH
CONTRACOR
®
Version 3.9 26
6.1.2 Motor rotating backwards. The motor should rotate as indicated by the arrow on
the housing. If it does not rotate in the proper direction, lockout and tag-out the power supply
and switch the motor leads as shown on the motor plate
.
6.1.3 Using soft media that rapidly breaks down, or using media that is too fine or worn
out can cause poor visibility.
6.1.4 Outlet damper closed too far restricting air flow in cabinet. Adjust static pressure
per Section 4.3.4.
6.1.5 Inlet damper requires opening. Restrictions at the inlet damper reduces air
movement in the cabinet. Open damper per Section 4.3.4.
6.1.6 Hole worn in flex hose between cabinet hopper and reclaimer inlet, or reclaimer
outlet and dust collector inlet. Replace hose and route it with as few bends as possible to
prevent wear.
6.1.7 Reclaimer door open. Reclaimer door have to be closed during the cabinet operating.
6.1.8
Check for obstruction in flex hose between the cabinet hopper and reclaimer inlet.
6.2. Abnormally high media consumption
6.2.1 Reclaimer door open, not in place, improper fit or worn gasket. Air entering
reclaimer at this point will cause media to be carried into the dust collector. DO NOT operate
system unless the door is closed.
6.2.2
Hole worn in reclaimer, or leak in reclaimer seams. Check entire reclaimer for
negative-pressure leaks.
6.2.3 Outlet damper open too far. Adjusting static pressure in Section 4.3.4.
6.2.4 Using soft media that rapidly breaks down, or using media that is too fine or worn out.
6.2.5 Nozzle pressure too high for media, causing media to break down.
6.3. Reduction in blast cleaning rate
6.3.1 Low media level can diminish media flow. Inspect and fill if level is too low.
6.3.2 Improper metering valve adjustment. Regulate according to Section 4.3.2.
6.3.3 Reduction in air pressure. A malfunctioning regulator, a dirty filter element in the air
filter, a partially closed air valve, a leaking air line or other air tools being used could be causes.
6.3.4 The blast hose or nozzle is blocked. Blockage can be the result of a missing
debris screen or incorrect metering valve adjustment allowing heavy media flow. Examine