PULSAR
®
3D SUCTION BLAST CABINET
Page 20
© 2020 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 29374
7.14
Static shocks
7.14.1
Cabinet and/or operator not grounded. Abrasive
blasting generates static electricity. The cabinet must be
earth-grounded to prevent static buildup. See Section
2.3. 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.
7.14.2
Gloves wearing thin. Inspect gloves and replace
them as needed.
7.14.3
Avoid holding parts and blasting off the grate.
Static will build 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.
7.15
Dust leaking from cabinet
7.15.1
Refer to Section 7.13.
7.16
Dust leaking from dust collector
7.16.1
Cartridge not seasoned; season cartridge, per
Section 6.8.
7.16.2
Damaged or loose cartridge. Inspect filter
cartridge and tighten or replace as needed.
7.16.3
Faulty seal on the dust collector cone. Inspect
seal and replace if damaged.
7.17
Dust collector does not pulse when foot
pedal is pressed or released
7.17.1
Check pressure on dust-collector pulse-
pressure gauge. If low, adjust pulse pressure, per
Section 4.2.
7.17.2
Refer to Figure 21 and make sure the 3-way
pulse valve has not come loose from the mounting
bracket. Tighten the retaining nut as needed to secure.
7.17.3
If the cam follower tilts to one side, one or both
roll pins are bent or missing. Remove the two screws on
the bottom of the pedal and remove the switch and cam
follower assembly. Center the cam follower and replace
roll pins as needed to hold the cam follower in place.
Refer to Figure 21.
7.17.4
Check alignment of pulse-valve cam follower:
With the exhauster running and with blast pressure
adjusted to 0 psi, hold the foot pedal in hand and fully
press the pedal top. The collector should pulse as the
cam follower rides over the lobe on the pedal top when
the pedal is pressed, and again when the pedal is
released, as shown in Figure 21. NOTE: The pedal
should be rapidly pressed and released so the cam
follower quickly rides over the lobe; prolonged
engagement of the pulse valve will lengthen the pulse,
which does not clean the cartridge and wastes
compressed air.
Figure 21
The lobe on the pedal top should press the cam follower
IN to engage the 3-way pulse valve, and disengage the
switch when the pedal is fully pressed and again when
the pedal is released. If the switch is not aligned to
function as described, align as follows:
Foot Pedal Top
Cam follower rests off
the bottom of the lobe
(no pulse).
Cam follower rests off
the top of the lobe
(no pulse).
Lobe
Cam Follower
Pulse Valve Plunger
3-Way
Pulse Valve
Pedal Base
The lobe pushes cam
follower in, pushing
pulse switch plunger in,
and pulses cartridge.
Roll Pins
Keeps follower upright.
Loosen screws and slide bracket as necessary to pulse
when the follower is on the lobe, and not pulse when
follower is off the lobe (when the pedal is fully pressed
or fully released).
Foot pedal top up nonblast position.
Pedal top partially pressed down.
Foot pedal top fully pressed down.
Mounting Bracket
Bracket Screws
