National Flooring Equipment 3397 User manual

Read Manual Before Servicing Machine
403058 Rev D
3397 SHOT BLASTER
SERVICE MANUAL

Table of Contents
3
Contents
Table of Contents .......................................................................................................................................................... 3
Features and Specications......................................................................................................................................... 4
Troubleshooting Guide ................................................................................................................................................. 7
Maintenance................................................................................................................................................................... 8
Maintenance and Inspection.................................................................................................................................. 8
Taper Lock Bushings ........................................................................................................................................... 10
Chain Drive .......................................................................................................................................................... 10
Replacing the Wheel Kit .......................................................................................................................................11
Replacing Liners ...................................................................................................................................................11
Check/Change Fuses ...........................................................................................................................................11
Service Parts................................................................................................................................................................ 12
Parts List and Diagrams ............................................................................................................................................. 13
Warranty ....................................................................................................................................................................... 21

Features and Specications
4
Product Specications
Width Length Height Weight Working
Width Voltage Blasting Capacity
Abrasive
Consumption
16” (41 cm) 50” (127 cm) 41” (104 cm) 398 lbs.
(181 kg) 10.5” (27 cm) 230V / 60 Hz
3-phase
Up to
1300ft2/h ~100g/m2
Valve and Blast Wheel
Control
Height Adjustable Handle
Rear-Facing Vacuum Port
Front Swivel Casters
In-Line Air Wash Sepera-
tion Systems
Forward/Reverse
10.5” Blast Pattern

Safety
Environment
Avoid use in dangerous environments.
Do not use in rain, damp or wet locations, or in the presence of
explosive atmospheres (gaseous fumes, dust, or ammable mate-
rials). Remove materials or debris that may be ignited by sparks.
Keep work area tidy and well-lit - a cluttered or dark work area may
lead to accidents. Extreme heat or cold may affect performance.
Protect others in the work area and be aware of surroundings.
Provide barriers or shields as needed to protect others from debris
and machine operation. Children and other bystanders should be
kept at a safe distance from the work area to avoid distracting the
operator and/or coming into contact with the machine. Operator
should be aware of who is around them and their proximity. Sup-
port personnel should never stand next to, in front of, or behind
the machine while the machine is running. Operator should look
behind them before backing up.
Guard against electric shock.
Ensure that machine is connected to a properly grounded outlet.
Prevent bodily contact with grounded surfaces, e.g. pipes, radia-
tors, ranges, and refrigerators. When scoring or making cuts,
always check the work area for hidden wires or pipes.
5
GENERAL RULES FOR SAFE OPERATION
Before use, anyone operating or performing maintenance on this equipment must read and understand this manual, as well as any labels pack-
aged with or attached to the machine and its components. Read the manual carefully to learn equipment applications and limitations, as well
as potential hazards associated with this type of equipment. Keep manual near machine at all times. If your manual is lost or damaged, contact
National Flooring Equipment (NFE) for a replacement.
Personal
Dress properly and use safety gear.
Do not wear loose clothing; it may be caught in moving parts.
Anyone in the work area must wear safety goggles or glasses,
hearing protection during extended use, and a dust mask for dusty
operations. Hard hats, face shields, safety shoes, etc. should be
worn when specied or necessary.
Maintain control; stay alert.
Keep proper footing and balance, and maintain a rm grip.
Observe surroundings at all times and use common sense. Do not
use when tired, distracted, or under the inuence of drugs, alcohol,
or any medication that may cause decreased control.
Keep hands away from all moving parts and/or tooling (if ap-
plicable).
Wear gloves when changing tooling. Remove tooling when ma-
chine is not in use and/or lower cutting head to the oor.
Do not force equipment.
Equipment will perform best at the rate for which it was designed.
Excessive force only causes operator fatigue, increased wear, and
reduced control.
Equipment
Use proper parts and accessories.
Only use NFE-approved or recommended parts and accessories.
Using any that are not recommended may be hazardous.
Ensure accessories are properly installed and maintained.
Do not permanently remove a guard or other safety device when
installing an accessory or attachment.
Inspect for damaged parts.
Check for misalignment, binding of moving parts, loose fasteners,
improper mounting, broken parts, and any other conditions that
may affect operation. If abnormal noise or vibration occurs, turn
the machine off immediately. Do not use damaged equipment until
repaired. Do not use if power switch does not turn machine on and
off. For all repairs, insist on only identical NFE replacement parts.
Maintain equipment and labels.
Keep handles dry, clean, and free from oil and grease. Keep cut-
ting edges sharp and clean. Follow instructions for lubricating and
changing accessories. Motor and switches should be completely
enclosed at all times with no exposed wiring. Inspect cord regu-
larly. Labels carry important information; if unreadable or missing,
contact NFE for a free replacement.
Avoid accidental starting; store idle equipment.
When not in use, ensure that the machine is unplugged; do not
turn on before plugging in. Store in a dry, secured place. Remove
tooling when storing, and keep away from children.
Maintenance & Repairs
Begin maintenance work only when the machine is shut
down, unplugged, and cooled down.
Use proper cleaning agents.
Ensure that all cleaning rags are ber-free; do not use any aggres-
sive cleaning products.
Schedule regular maintenance check-ups.
Ensure machine is properly cleaned and serviced. Remove all
traces of oil, combustible fuel, or cleaning uids from the machine
and its connections and ttings. Retighten all loose ttings found
during maintenance and repair work. Loose or damaged parts
should be replaced immediately; use only NFE parts.
Do not weld or ame-cut on the machine during repairs, or
make changes to machine without authorization from NFE.
CAUTION! ENSURE PROPER USE OF EXTENSION CORDS. IF AMP DRAW IS HIGHER THAN SHOWN ON
TABLE OR CORD IS LONGER THAN 50 FT, SEE AN ELECTRICIAN.
ASSUMPTIONS: 3% ALLOWABLE VOLTAGE DROP, COPPER CONDUCTORS RATED FOR 75OC, 1.25
SAFETY FACTOR, CORD VOLTAGE RATING OF 600VAC, PROPER CORD TYPES (STO, STOW, SOOW).
Amp Draw Gauge
0-12 14
13-16 12
14-24 10
25-40 8

Safety
SHOT BLASTER SAFETY GUIDELINES
Before use, anyone operating this equipment must read and understand these safety instructions.
6
WARNING: GRINDING/CUTTING/DRILLING OF MASONRY, CONCRETE, METAL AND OTHER MATERIALS CAN GENERATE DUST,
MISTS AND FUMES CONTAINING CHEMICALS KNOWN TO CAUSE SERIOUS FATAL INJURY OR ILLNESS, SUCH AS RESPIRATORY
DISEASE, CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM. IF YOU ARE UNFAMILIAR WITH THE RISKS ASSOCIATED
WITH THE PARTICULAR MATERIAL BEING CUT, REVIEW THE MATERIAL SAFETY DATA SHEET AND/OR CONSULT YOU EMPLOYER,
THE MATERIAL MANUFACTURER/SUPPLIER, GOVERNMENTAL AGENCIES SUCH AS OSHA AND NIOSH AND OTHER
AUTHORITIES ON HAZARDOUS MATERIALS. CALIFORNIA AND SOME OTHER AUTHORITIES, FOR INSTANCE, HAVE
PUBLISHED LISTS OF SUBSTANCES KNOWN TO CAUSE CANCER, REPRODUCTIVE TOXICITY, OR OTHER HARMFUL
EFFECTS. CONTROL DUST, MIST AND FUMES AT THE SOURCE WHERE POSSIBLE. IN THIS REGARD USE GOOD
WORK PRACTICES AND FOLLOW THE RECOMMENDATIONS OF THE MANUFACTURER/SUPPLIER, OSHA/NIOSH,
AND OCCUPATIONAL AND TRADE ASSOCIATIONS. WHEN THE HAZARDS FROM INHALATION OF DUST, MISTS AND
FUMES CANNOT BE ELIMINATED, THE OPERATOR AND ANY BYSTANDERS SHOULD ALWAYS WEAR A RESPIRATOR
APPROVED BY OSHA/MSHA FOR THE MATERIAL BEING CUT.
Shot Blasting
Beware of hidden obtrusions.
Watch out for hidden dangers and protrusions in ooring. Do not
use on largely uneven surfaces.
Avoid contact with hot shroud.
Do not touch the shroud without proper hand protection. Both
become hot during operation and remain hot after stopping the
machine.
Provide barriers, shields, or safety glasses as needed to
protect others from debris.
Use for correct applications.
Do not force equipment to do heavier duty work than it was made
for.
Use a magnetic sweep immediately after blasting.
Steel shot that is left on the walking surfaces creates a hazard for
falling unexpectedly.
Use a magnetic sweep before and after blasting.
Steel shot that is left on the walking surfaces creates a hazard
during and after operation.
Do not tip machine during use.
Tipping the machine may throw the abrasive material.
Safety
Dust Collection
Turn off machine before working with dust collector.
Do not switch off or remove the dust collector while the machine is
running.
Use with appropriate dust collecting system.
Do not operate machine designed for use with a dust collector
without the dust collector. Ensure dust collector is on and operating
properly while blasting.
Dispose of collected waste.
Do not leave the dust collector bag full of waste. Handle and
dispose of bag and waste in accordance with all applicable local,
state, and federal regulations. The dust bin of a connected dust
collector must be emptied before transportation.
Equipment

7
Troubleshooting Guide
Problem Cause Solution
Reduced or no
performance
Worn blast wheel or control cage Replace worn items
Belt tension Check and adjust belts
Valve does not close properly Close valve, stop motor, re-adjust valve
Too much abrasive admitted Motor must reach max. speed before opening valve
Feed motion too fast Reduce speed
Motor is rotating in the wrong direction Turn off control power; wait for motor to stop, then
turn FWD/REV switch to opposite position
Losing abrasive Bad seals Check base seals; readjust or replace
Elevation adjustment of magnets Check elevation is no higher than 5/16” (8 mm)
Magents lost eld Replace magnets
Filter unit Adjust reducing damper
Dumping or
losing abrasive
Poor abrasive quality Use quality abrasives
Worn blast wheel or seals Replace blast wheel or adjust/replace seals
Control cage is not correctly adjusted Align notches to 9:00 and 11:00 position
Magnets at wrong elevation Adjust elevation of magnets
Too much dust or sand in system Check lter
Valve is opening too far and allowing too much
shot into the blast wheel, causing the Amp draw
to be over 25 Amps
Reset the valve opening so the maximum Amp draw
isn’t higher than 20 Amps on the meter
Blast valve is stuck open Inspect and remove debris
Too much dust and other
particles in storage
Insufcient air ow towards ltration unit Check rated performance of the dust collector
Check all seats
Check dust hose
Check differential pressure and replace lter ele-
ments if pressure is too high
Motor does not start Missing phase Check power supply
Faulty switch or relays Diagnosis and replacement by electrician
Emergency stop Unlock emergency stop button
Motor stops during
operation
Current is too high Disconnect plug
Power supply circuit breaker is disengaged Reset circuit breaker or replace fuse
Motor is damaged Check motor
Inconsistent blast pattern Control cage out of adjustment Inspect and adjust control cage
Blast wheel and/or control cage are worn Replace blast wheel and/or control cage

Maintenance
8
MAINTENANCE AND INSPECTION
Safety and service life of the machine depend on proper maintenance. The following table shows recommendations about time, inspection,
and maintenance for the normal use of the machine. The time indications are based on uninterrupted operation. When the indicated number
of working hours is not achieved during the corresponding period, the period can be extended. However, a full overhaul must be carried out at
least yearly. Due to different working conditions, the frequency for inspections will vary. Prepare a suitable inspection schedule adhering to the
specic working conditions.
Operating Hours Inspection and Maintenance
Every 3 hours • Check whether there is any foreign matter in the hopper, the
feed spout, or in the blast wheel unit.
Daily, prior to operation • Check the hose connections for tightness.
• Check the hose to the lter for damages.
• Make sure that the dust collector has been emptied.
• Check blast wheel, feed spout, liners, and fasteners for wear
or damage.
• Check the separator parts for wear and defects.
• Check the level of abrasive in the storage hopper. Fill to bot-
tom of wire mesh if necessary.
• Check the magnetic and seals for wear; replace if necessary.
• Check the electrical connections, motor, and separator for
sediment or foreign bodies.
• Check function of all safety devices.
• Check tightness on all accessible screw connections.
Yearly • Fully overhaul and clean the machine.
CAUTION: PRIOR TO ANY REPAIR WORK ON THE MACHINE OR ITS DRIVES, SECURE THE MACHINE AGAINST UNINTENTIONAL
START-UP. PULL OUT THE MAIN PLUG; STORE NEAR THE MACHINE TO AVOID ACCIDENTS.

Maintenance
TAPER LOCK BUSHINGS (FIGURE 1)
Taper lock bushings are used to t hubs onto shafts. Mounting and demounting requires
an Allen wrench of the correct size. Tightening or loosening is done with the same
threaded set screws.
The taper lock bushing is cylindrical on the inside; tapered and slit longitudinally on the
outside. The bushing has two blind half-holes (located across from one another) on its
outer diameter that correspond with similar half-holes on the inside diameter of the pulley
(F).
With the two half-holes lined up, the set screw is threaded into the blind hole (F) and will
collapse the tapered bushing and tighten it onto the shaft and sheave.
Demounting
1. Remove the screws (F) from the taper lock bushing.
2. Lubricate the threads of the set screw and the threads of the 3rd half-hole (located
90 degrees from where the set screws were removed).
3. Thread the screw into the hole; turn the screw until the taper lock bushing (B) loos-
ens on the shaft and inside the pulley.
Mounting
Ensure that all contact surfaces are free from dirt, oil, and other contaminants.
1. Place taper lock bushing into the pulley, lining up the half-holes in both and the
shaft key with the key in the taper lock bushing. Place them onto the shaft.
2. Lightly thread the set screws into the holes.
3. With the pulley seated on the shaft, take a small hammer and a socket that ts
inside the outside diameter of the bushing and seat the bushing into the pulley.
4. Use Allen wrench to tighten the set screws evenly; alternate tapping the bushing
until the set screws are fully tightened.
CHAIN DRIVE (FIGURE 2)
Chain drives are relatively robust and reliable even under unfavourable operating condi-
tions. Incorrect mounting and insufcient lubrication or maintenance will cause premature
wear of the chain and the chain wheels. Careful tting of the chain drives and appropriate
maintenance contribute to a long service life.
In order to check the chain condition, unscrew screws (A) and remove the cover (B) from
the traction drive brackets as shown.
Fitting Sprockets
Chain sprockets must be aligned. In order to achieve this, both the shafts and chain
sprockets must be parallel and dimensioned according to the load. Check the mounting
precision by putting a ruler to the chain wheels.This has to be done several times with
different chain wheel positions. Incorrect mounting makes the internal chain link plates
press against the external link plates and accelerates the chain wear or causes the chain
wheels to lock up.
9
WARNING: REMOVE THE CHAIN GUARD ONLY WHEN THE DRIVE MOTOR IS
AT A STANDSTILL AND THE MACHINE IS IN THE SAFETY OFF POSITION.
FIG. 1
FIG. 2

Maintenance
10
Fitting the Chain (Figure 3)
Before mounting the chain, it must be degreased.
The chain is supplied as a chain string and must be prepared during mounting. This is
done as follows:
1. Place chain on the sprocket so that the links lie in adjacent gaps between the teeth.
2. Close chain using a master link. With heavy chains or longer distance between the
shafts, use a pre-stressing tool to bring the two end links closer together so that the
master link can be inserted without being deformed.
Note: Chain links with springs should have their closed sides pointing in the running
direction (L) of the chain (S). Slide in the link adapter (V); place the link plate opposite of
the spring and press it over the pin into the ring groove using a pair of tongs. Demount
the spring in the reverse order.
Maintenance and Repairs
A chain drive needs little maintenance if the correct chain has been selected, mounted
correctly for the application, and is not lubricated with grease. A chain guard protects the
drive chain. The chain guard prevents excessive contamination and accidents.
The drive must be cleaned every three months; on these occasions, check the alignment
of the chain sprockets and tension.
In order to clean thoroughly:
• Remove the dirt on the outside of the chain drive using a hard or wire brush.
• Wash the chain in mineral spirits or other solvent.
• Clean the dirt from the internal parts of the chain by putting the chain in mineral
spirits or other solvent for approx. 24 hours. Move the chain several times back and
forth while in the solvent to clean the joints.
REPLACING THE WHEEL KIT
The wheel kit consists of the blast wheel, control cage, lock washer, and retaining bolt.
Demounting (Figure 4)
1. Remove the feed spout (A) by pulling it out of the control cage.
2. Loosen the cage clamps (B) and remove the control cage (Z).
3. Unscrew the four acorn nuts of the front cover plate (F); remove the plate.
4. Unscrew the retaining bolt (H) of the blast wheel (R) while holding the blast wheel
still. Take the blast wheel out of the housing.
5. Check the wheel adapter (D) for wear and replace if necessary.
Mounting (Figure 5)
1. Clean all threads and use a new blast wheel retaining bolt. Place blast wheel (R)
on the wheel hub (D) through the blast housing opening so the wheel ts with the
adapter pins (M). Tighten the blast wheel by the retaining bolt(H).
2. Re-attach the front cover plate (F) using the four washers and acorn nuts.
3. Insert the control cage (Z) in the center and clamp the control cage with the cage
clamps (B) so that the blast wheel can rotate free with an overall clearance of 1/8”
(3 mm) to the impeller. The blast wheel must rotate freely.
4. Preset the notches or guide lines, on the face of the control cage, to the 9:00 and
11:00 positions (OK and UK respectively) as shown in Figure 5.
FIG. 3
FIG. 4
FIG. 5

Maintenance
5. Place the feed spout (A) in the housing.
REPLACING LINERS (FIGURE 6)
Demounting
1. Remove the front plate (F) and wheel kit (S).
2. Slacken the set screw (A) of the top liner.
3. Take of the screws of the cover (B) and remove the cover.
4. Slacken the nuts (D) of both the right and left side liner and put them aside.
5. Slacken the nuts (E) of the bottom liner.
6. Push both side liners (SL) and (SR) inwards and remove them towards the bottom
out of the housing.
7. On the right or left side, push the top liner inwards (O); push it back upwards again
and remove (O), turning it towards the side out of the top of the housing.
8. Slacken the nuts (E) of the bottom rebound liner (U) push the liner inward.
9. Fully remove the nuts (E) and remove the liner (U) downward away from the hous-
ing.
10. To remove the rebound bottom (U) and top liner (V), remove the nuts and pull both
downwards out of the housing.
Mounting
1. Before tting any new liner, check all threads to assure they are clean of dirt and
abrasives. Clean where necessary.
2. Place the bottom liner (U), put the nuts (E) on, but do not over tighten.
3. Place both side liner (SL) and (SR) into the housing and t washer and nuts.
4. Place the top liner (O) to the top.
5. Close the cover (B) and t the screws, set the setscrew (A) cover so the top liner is
forced downwards to the upper surfaces of the side liners.
6. Fit the blast wheel, front plate, and control cage.
CHECK/CHANGE FUSES
For any work inside the controller, the screws will need to be removed (Figure 7). The
fuses are located inside the control box (Figure 8). To check the fuse, and change if
necessary, complete the following steps:
1. Remove the screws on each side of the control box and the one in front (Figure 7).
2. Remove the fuse(s).
3. Use a continuity tester to test the fuse(s).
4. Replace any bad fuse(s) and reverse these steps.
11
WARNING: DO NOT OPEN CONTROL BOX OR TOUCH/REMOVE THE FUSE(S)
UNTIL THE MACHINE HAS BEEN TURNED OFF, UNPLUGGED, AND AT A
STANDSTILL FOR APPROX. FIVE MINUTES.
FIG. 7
FIG. 6
FIG. 8

Service Parts
12
1 3396-201000002 SERVICE KIT, BLAST WHEEL, 10MM X
165MM
2 3397-201000052 LINER, SIDE, LEFT
3 3397-201000053 LINER, SIDE, RIGHT
4 3397-201000054 LINER, TOP
5 3397-201000108 ADAPTER, WHEEL
6 3397-201000118 SEAL, REAR
7 3397-201000158 LINER, BOTTOM, RBC
8 3397-201000417 BRUSH, LEFT
9 3397-201000418 BRUSH, RIGHT
10 3397-201000419 BRUSH, FRONT, LONG
11 3397-201000420 BRUSH, FRONT, SHORT
12 3397-301000007 BELT, TENSION, 40”, 50HZ
13 3397-301000019 BELT, TENSION, 38”, 60HZ
14 401409 PLATE, BASE, WEIGHT
15 401410 WEIGHT, FRONT, SHOT BLASTER
16 401411 BELT, RUBBER
17 401581 LINER, REDUCTION, 4 IN., 3397
18 402122 BUSHING, TAPER LOCK, US
19 402123 SHEAVE, 60, US
20 402403 RING, FEED SPOUT
21 402571 POTENTIOMETER, GROUND SPEED
CONTROL
22 403045 PLATE, SIDE SEAL
23 3397KIT KIT, 3397 SHOTBLASTER, SET OF
MAINTENANCE PARTS

Parts List and Diagrams
13
OVERVIEW

Parts List and Diagrams
14
WHEEL DRIVE ASSEMBLY

Parts List and Diagrams
15
WHEEL HOUSING ASSEMBLY

Parts List and Diagrams
16
TRACTION DRIVE ASSEMBLY

Parts List and Diagrams
17
SEPARATOR ASSEMBLY
4X
15
7
14
6
4
4X
3
2
5
1
8
13 2X
ITEM
NO.
PART
NUMBER DESCRIPTION QTY.
1 402983 Controller, Shot Blaster, 10hp, 208/230V, 3 Phase 1
2 403237 Lever, Push-Pull, 48" 1
3 403268 Pivot, Cable, Valve 1
4 403224 Spring, Extension, .750 OD x 3.00 x .075 1
5 401306 Nut, M6-1.0 1
6 403120 Screw, Button Head Cap, M6-1.0 x 22mm 1
7 403280 Screw, Socket Head Cap, M5-0.8 x 20, Black Oxide 4
8 403279 Screw, Button Head Cap, M5-0.8 x 12, Black Oxide 6
9 402141 Bolt, Carriage, M6 X 1.0 X 30 1
10 401516 Nut, M6-1.0 Nylock 1
11 402934 Extension, Lever, Actuator 1
12 403296 Ferrule, 10 AWG, Green, Nylon Insulated 3
13 403235 Nut, Hex, M6 x 1.0, Keps 2
14 403350 Adapter, Cable, Mount 1
15 403351 Nut, Push, 5/8 1
9
11
10 82X
4X
15
7
14
6
4
4X
3
2
5
1
8
13 2X
ITEM
NO.
PART
NUMBER DESCRIPTION QTY.
1 402983 Controller, Shot Blaster, 10hp, 208/230V, 3 Phase 1
2 403237 Lever, Push-Pull, 48" 1
3 403268 Pivot, Cable, Valve 1
4 403224 Spring, Extension, .750 OD x 3.00 x .075 1
5 401306 Nut, M6-1.0 1
6 403120 Screw, Button Head Cap, M6-1.0 x 22mm 1
7 403280 Screw, Socket Head Cap, M5-0.8 x 20, Black Oxide 4
8 403279 Screw, Button Head Cap, M5-0.8 x 12, Black Oxide 6
9 402141 Bolt, Carriage, M6 X 1.0 X 30 1
10 401516 Nut, M6-1.0 Nylock 1
11 402934 Extension, Lever, Actuator 1
12 403296 Ferrule, 10 AWG, Green, Nylon Insulated 3
13 403235 Nut, Hex, M6 x 1.0, Keps 2
14 403350 Adapter, Cable, Mount 1
15 403351 Nut, Push, 5/8 1
9
11
10 82X
CONTROL BOX ASSEMBLY

Parts List and Diagrams
18
BASE SEAL ASSEMBLY

Parts List and Diagrams
19
REBOUND ASSEMBLY