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OPERATING MANUAL
Gilson Porta-Screen®
PS-3 & PS-4
PHONE: 800-444-1508 P.O. Box 200, Lewis Center, Ohio 43035-0200
740-548-7298 E-mail: customerservice@gilsonco.com Product Web Page: www.globalgilson.com
Rev: 01/2019
FAX: 800-255-5314
740-548-5314
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
SAFETY INSTRUCTIONS
Whether you are the owner, employer, operator, or maintenance person for this machine, safety is your responsibility. You
are responsible for operating and maintaining this equipment in compliance with these instructions and for using common
sense. Review and completely understand the operating and safety instructions before using this machine.
WARNING!
This machine operates on electric current. Improper operation could result in electric shock, electrocution,
or an explosion!
1. ALWAYS ensure the motor and other electrical components are properly congured for your intended use and available
power source. The Gilson Porta-Screen® comes with a 1/3hp motor wired for 115V/60Hz. It can also be ordered with
special wirings: 230/50. Motors are NOT explosion-proof.
2. ALWAYS check electrical wiring for loose connections and for pinched or frayed wiring.
3. ALWAYS use the factory-installed three-pronged plug. Connect the machine to a properly wired and grounded threepronged receptacle. Make sure the cord is located where no one will trip or get tangled in it.
4. ALWAYS disconnect and lock out power supply before performing maintenance and repairs.
WARNING!
DO NOT use this machine in an explosive or hazardous atmosphere. It is NOT explosion-proof or approved for
operation in hazardous locations.
WARNING!
WARNING: Only operate the machine in a properly ventilated area.
WARNING: DO NOT operate the machine without having all guards and covers in place.
WARNING: ALWAYS level the machine prior to operation.
WARNING: Stop the machine immediately and re-level if excessive vibration or machine movement occurs.
WARNING: The electric motor on this machine has internal thermal protection. If the motor shuts o from overload, the
machine may restart by itself after cooling o, unless the machine is unplugged during cool-down.
WARNING: Take care NOT to pinch your ngers between the clamp levers and the machine frame.
WARNING: ALWAYS unplug or disconnect machine from the power source when the unit is not in operation.
WARNING: Keep all parts of your body away from moving parts of the machine while it is operating.
WARNING: ALWAYS wear safety glasses and recommended hearing protection when operating, maintaining, or repairing
this machine.
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
Table of Contents
Page
Safety Instructions ....................................2
Table of Contents......................................3
1.0 Unpacking & Set-Up ...................................4
2.0 Operation Instructions.................................4
2.1 Safety Precautions ...................................4
2.2 Timer Set-Up & Operation ............................5
2.3 Procedure ...........................................5
3.0 Sample Capacity ......................................6
3.1 Coarse Aggregates ...................................6
3.2 Fine Aggregates .....................................6
4.0 Maintenance & Disassembly............................6
4.1 Clamping System ....................................6
4.2 Lubrication ..........................................6
4.3 Belts.................................................7
4.4 Bearing Replacement ................................8
5.0 Parts List.............................................10
5.1 PS-3 & PS-4 Parts List ............................... 10
5.2 Replacement Trays, Wire Cloth & Parts .............. 11
6.0 Parts Diagram........................................12
6.1 PS-3 & PS-4 Parts Diagram .......................... 12
7.0 Accessories ..........................................13
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
1.0 UNPACKING & SETUP
The Porta-Screen®, packed for shipment, weighs between
225—255lbs, depending on the model and the number of
trays packed inside. Use equipment to adequately to handle
this weight safely. Wear safety glasses and work gloves.
1. The Porta-Screen® is shipped in a cardboard carton.
Before you accept the shipment, check the carton for
visible damage. Note any damage on the freight bill, and
proceed with inspection.
2. Place the carton on its side so that you can remove the
staples from the bottom. Open the bottom aps and
set the machine upright again. Lift o the carton and
set it aside until you are sure that the Porta-Screen® is in
acceptable condition.
3. Check the machine for shipping damage. If you nd
concealed damage after you have signed for the PortaScreen®, call the delivering carrier immediately for an
inspection. Save all packing materials, and leave the
Porta-Screen® as it is.
4. Check the tag on the electric motor of the Porta-Screen®
to be sure that the machine is wired as ordered.
5. Release clamping pressure on the Porta-Screen® trays by
rotating the clamp levers outward and upward 180°.
observe the distribution of sample material in the trays at
the end of a test. If the material is not evenly distributed,
re-level the machine.
9. Reinstall the trays in the Porta-Screen®. Leave them unclamped.
10. Do not plug in the Porta-Screen® until you are ready to
use it.
2.0 OPERATING INSTRUCTIONS
NOTE: Please read and understand all safety and op-
erating instructions for the Gilson Porta-Screen® before
putting it into service.
2.1 Safety Precautions
WARNING: Only operate the machine in a properly
ventilated area.
WARNING: DO NOT operate the machine without having
all guards and covers in place.
WARNING: ALWAYS level the machine prior to operation.
6. Remove trays by sliding them out the front of the machine.
7. Choose your operating site:
a. The Porta-Screen® requires a properly-wired, three-
pronged, grounded receptacle with appropriate
electrical current for the machine.
b. Choose a well-ventilated site.
c. Set the Porta-Screen® on a solid, stable oor, platform,
or other surface.
8. When you have placed the Porta-Screen® in its operating
location, and each time you move it, level the unit by
adjusting the three leveling legs.
To extend a leg, place your foot on the edge of the pad,
and lift up on the machine above the leg.
To contract a leg, depress the leg lo ck tab, which extends
from the case above each footpad.
Use the bullseye level in the top frame crossbar as a guide.
WARNING: Stop the machine immediately and re-level
if excessive vibration or machine movement
occurs.
WARNING: The electr ic motor on this machine has internal
thermal protection. If the motor shuts o
from overload, the machine may restart by
itself after cooling o, unless the machine is
unplugged during cool-down.
WARNING: Take care NOT to pinch your ngers between
the clamp levers and the machine frame.
WARNING: A LWAYS unplug or disconnect machine
from the power source when the unit is not
in operation.
WARNING: Keep all parts of your body away from moving
parts of the machine while it is operating.
WARNING: A LWAYS wear safety glasses and
recommended hearing protection when
operating, maintaining, or repairing this
machine.
After you have placed the Porta-Screen® into service,
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
2.2 Timer Set-Up & Operation
This unit is equipped with an easy-to-operate Gilson interval
count-down timer. The timer has a large 0.6in LED display
and will operate in four dierent modes. It is powered by line
voltage and will work on power supplies from 100—265 VAC,
50/60Hz, with up to 20 amps Inductive or Resistive current.
NOTE: The main device controlled by the timer may
be restricted to operating on a more limited electrical supply range. Check the device carefully to insure
compatibility with your electrical supply.
Current timer mode is indicated by the four red LED’s on the
timer face:
• A = MMSS (99min:59sec x 1 second)
• B = HHMM (99hr:59min x 1 minute)
• C = SSSS (9999sec x 1 second)
• D = MMMM (9999min x 1 minute)
(H is for hours, M for minutes, and S for seconds.) To adjust
the timer mode, press and hold both <UP> and <DOWN>
keys at the same time until the display shows the mode. Once
the mode letters are displayed, press <UP> or <DOWN> to
change modes. Press <START/STOP> to accept new mode.
To set the run time, press either <UP> or <DOWN>. The rst
digit on the right hand side will ash in half-second intervals.
Press either arrow key to adjust to the desired value. To enter
the displayed digit and move to the next, press <START/
STOP>. Once the last digit on the left is entered, the timer
is ready to start.
The Porta-Screen® will not clamp or operate properly
unless fully loaded with trays. If your test requires fewer
trays than the capacity of the Porta-Screen®, you may
insert the required trays in the upper slots with the pan
immediately below. Then ll the lower slots with extra
trays.
3. Clamp the trays by rotating the clamp levers so that they
point down.
4. Pour your sample into the top tray. Refer to the sample
capacity information and be sure not to overload the
Porta-Screen®.
5. Connect the three-pronged plug into a properly-wired,
grounded receptacle with appropriate electrical current.
6. Set and activate the timer.
7. When the machine stops, unclamp the trays by rotating
the clamp levers so they point up. Remove and empty
the trays, following the directions in your test specications.
8. When you have nished your test, unplug the machine.
Do not reconnect power until you are ready to use the
machine again.
9. Store clean, empty trays in the unit, leaving them unclamped.
10. Re-level the machine before the next use.
Press <STAR T/STOP> to initiate the current run program. Once
running, pressing <START/STOP> again will pause the timer
with the current amount of time remaining on screen. When
allowed to time-out, the timer beeps and displays DONE.
Press any key to continue. Setting and Mode values are saved
automatically and restored on power-up.
2.3 Procedure
Read and be sure you understand all safety, operating, and
timer instructions, as well as specications and procedures
for your test.
1. Check to see that the Porta-Screen® is level.
2. Select and load the appropriate trays.
Fill all the slots: 5 trays and pan for the PS-3
7 trays and pan for the PS-4
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
3.0 SAMPLE CAPACITY
Capacity of the Porta-Screen® depends on the specications
of the test and the type and size of the material being tested.
For any given sample, the Porta-Screen's maximum capacity
is determined by the tray which has the largest load at the
end of the test. This is the limiting tray.
3.1 Coarse Aggregates
Minimum quantity of sample is usually established by the
specications of the test procedure. For example, ASTM C
136 "Specication for the Sieve or Screen Analysis of Fine and
Coarse Aggregates" calls for the minimum weight of the test
sample of coarse aggregates (density such as limestone or
gravel) as follows:
Normal Maximum Minimum
Size of Particle Sample Weight
mm (in) kg (lb)
9.5 (3/8) 1 (2)
12.5 (1/2) 2 (4)
19.0 (3/4) 5 (11)
25.0 (1) 10 (22)
37.5 (1-1/2) 15 (33)
50 (2) 20 (44)
63 (2-1/2) 35 (77)
With ne series trays, (No.8 to No.200), the limiting tray should
contain no more than approximately 4g per square inch of
sieve surface at the end of a test. Assuming that the material
is about the density of sand, there will be approximately 800g
maximum on the limiting tray.
Since the Porta-Screen® is designed primarily for use in the
2in to No.20 range, separations in ner sizes will not be as
precise. If you are testing materials exclusively in the ne
range, we recommend equipment specically designed for
this purpose, such as the Gilson Model SS-8R Sieve Shaker.
4.0 MAINTENANCE & DISASSEMBLY
NOTE: Please read and understand all safety and
maintenance instructions for the Gilson Porta-Screen®
before performing maintenance on it.
WARNING!
ALWAYS disconnect and lock out electric power before
performing maintenance!
These guidelines on minimum sample size quantities are for
representative samples. Always take a much larger amount,
perhaps from several spots in a storage bin or stockpile. Then
combine and reduce them to the correct quantity by splitting.
With coarse series trays, (2in to No.4), the limiting tray should
have no more than one layer of particles over the wire cloth
at the end of the test. Therefore, lightweight aggregates or
coal must be tested in lower sample weights. High-density
ores or pellets may be tested in larger amounts by weight.
Many light materials are also soft, and test times should be
limited to avoid degradation of the sample.
Most samples of up to 2in topsize can be handled in a single
batch without diculty. We do not recommend the use of trays
with mesh sizes above 1-1/2in, since larger particles become
wedged in the mesh and make it dicult to remove the trays.
3.2 Fine Aggregates
4.1 Clamping System
1. DISCONNECT AND LOCK OUT ELECTRIC POWER.
2. Load the Porta-Screen® with trays and pan, lling all the
slots.
3. Rotate the Clamp Levers (#38) so that they point down.
4. Locate the Clamp Adjusting Nuts (#9), which are on the
lower ends of the four Clamp Tension Rods (#7).
5. Tighten the nuts only enough to prevent the trays from
rattling when the machine is operating.
4.2 Lubrication
1. DISCONNECT AND LOCK OUT ELECTRIC POWER.
2. Remove and set aside trays and pan.
3. Remove upper case cover.
4. Connection Rod Bearing: Lubricate the Connecting Rod
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
Bearing (#52) after every 80—100 hours of operation.
a. Rotate Drive Shaft (#20) slightly by hand until the
grease tting at the lower end of the Connecting Rod
(#50) is accessible. (Grease tting may be pointing
either to the front or to the back of the Porta-Screen®).
b. Apply a small amount of any good-quality bearing
grease.
c. Proceed to shaft bearing lubrication.
5. Shaft Bearings: There are two Bearings (#47), front and
rear, on the Drive Shaft (#20), and two Bearings (#41), front
and rear, on each of the two Counterweight Shafts (#12,
#13). Some Porta-Screens have sealed shaft bearings;
others have shaft bearings with grease ttings. If the shaft
bearings on your machine have grease ttings, lubricate
the bearings after every 80—100 hours of operation.
a. WITH ELEC TRIC POWER DISCONNECTED AND LOCKED
OUT, and trays, pan, and upper case cover removed,
remove lower front and rear case covers.
b. Apply a small amount of any good-quality bearing
grease.
c. Reassemble in reverse order.
6. Motor Bearings: Lubricate annually.
a. Remove trays, pan, and upper case cover.
b. Remove lower front and rear case covers.
c. Find and remove the oil plugs at each end of the
motor.
The Timing Belt (#16) should t tightly.
Access to Belts:
1. DISCONNECT AND LOCK OUT ELECTRIC POWER.
2. Remove and set aside trays and pan.
3. Remove all case covers.
4. Drive Belt: Check tension by pressing on the span of the
belt. If properly adjusted, the belt should be deected
1/64th of the value of the distance between the pulleys.
To adjust or remove, loosen the Motor Mounting Bolts
(#61); and the motor will slide up, loosening the belt
tension.
a. To adjust, move the motor up or down until the belt
tension is correct. Retighten the nuts.
b. Or remove the loosened belt if it is worn, and install a
new one. Obtain the correct tension by moving the
motor up or down. Retighten the nuts.
c. Continue or reassemble.
5. Timing Belt: Check tension by pressing on the span of
the belt. The belt should be tight. To adjust or remove
the timing belt, loosen the two Idler Bracket Mounting
Screws (#45). Loosen the nut on the Adjusting Screw
(#46).
a. To tighten: Turn in the adjusting screw to pull
the Bracket (#17) down and increase
tension on the belt. Retighten the nut
to hold the bracket in position. Reassemble.
d. Insert a few drops of oil.
e. Replace plugs.
f. Reassemble in reverse order.
7. Idler Pulley Bearings: These sealed Bearings (#62) do
not require lubrication.
4.3 Belts
The Drive Belt (#22) should t snugly. If the belt is too tight,
it will soon wear out, causing bearings to wear and resulting
in noisy operation. A loose belt may cause the unit to run too
slowly or to slip. Keep the Drive Pulley (#21) and Motor Pulley
(#60) aligned so that the drive belt is straight.
b. To replace: Loosen the adjusting screw to permit
the idler bracket to move upward,
loosening the tension on the timing
belt so that you can remove it. Before
reinstalling belt,
(1) Rotate Drive Shaft (#20) until the Connecting Rod
(#50) is at its highest position.
(2) Rotate Counterweight Shafts (#12, #13) until
counterweights are at their lowest position.
(3) Fit the belt around the left counterweight shaft
pulley, around the Timing Pulley (#49), above the
right counterweight shaft pulley, and around the
Idler Pulley (#19).
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
(4) Tighten the idler bracket adjusting screw until the
timing belt is tight, making certain that you do
not change the position of the shafts. Lock the
idler bracket in position with the nut. Tighten the
bracket mounting screws.
(5) Reassemble.
DO NOT PLUG IN THE PORTA-SCREEN® UNTIL YOU ARE
READY TO USE IT.
4.4 Bearing Replacement
1. Guide Bearing Assemblies: The Porta-Screen® has three
guide bearing assemblies: each has a housing and guide
bushing. The two upper guide bearings (#34) are mounted
to the top frame crossbar. The Lower Guide Bearing (#59)
is mounted to the underside of the vibrating unit.
If you notice side-to-side movement of the vibrating
unit during operation, inspect the guide bearings
and replace them if necessary. We recommend replacement of all three assemblies at the same time.
a. DISCONNECT AND LOCK OUT ELECTRIC POWER.
b. Remove and set aside trays and pan.
c. Remove Top Frame Screws (#2), and lift o Top Frame
Crossbar (#1).
d. Upper:
(1) Remove Mounting Screws (#35) to detach Bearing
Housing (#34).
2. Connecting Rod & Drive Shaft Bearings: The Connecting Rod (#50) can be replaced as an assembly, or you can
press out and replace its Bearing and Bushing (#52).
The Drive Shaft (#20) has front and rear Bearings (#47).
We recommend replacement of both front and rear
bearings as a set.
a. DISCONNECT AND LOCK OUT ELECTRIC POWER.
b. Remove and set aside trays and pan.
c. Remove Top Frame Screws (#2).
d. Lift o Top Frame Crossbar (#1).
e. Remove all case covers.
f. Remove the Connecting Rod Mounting Bolt (#24).
g. Lift the entire vibrating unit assembly up and out of
®
the Porta-Screen
frame.
h. Loosen the motor mounting bolts to release tension
on the drive belt, and remove the drive belt from its
pulleys.
i. Loosen the setscrew in the Drive Pulley (#21), and
slide the pulley o the drive shaft.
j. Loosen the setscrew in the rear drive shaft bearing.
k. Loosen the Idler Bracket Mounting and Adjusting
Screws (#45, #46) to release tension on the timing belt.
(2) Replace with new bearing housing assembly.
e. Lower:
(1) Remove all case covers.
(2) Remove the Connecting Rod Mounting Bolt
(#24).
(3) Lift the entire vibrating unit assembly up and
out of the Porta-Screen® frame.
(4) Remove Mounting Screws (#56) to detach Bear-
ing Housing Unit (#59).
(5) Replace with new bearing housing assembly.
f. Reassemble in reverse order.
DO NOT PLUG IN THE PORTA-SCREEN® UNTIL YOU ARE
READY TO USE IT.
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l. Remove the Timing Belt (#16).
m. Loosen the setscrew in the Drive Shaft Pulley (#49),
and slide the pulley o the drive shaft.
n. Remove the mounting screws from the Front Drive
Shaft Bearing (#47).
o. Hold onto the top of the Connecting Rod (#50) while
you pull the drive shaft out from the front of the
machine with the front bearing attached.
p. Remove the Connecting Rod (#50).
q. Install new connecting rod assembly or press new
bushing and bearing into existing connecting rod.
r. Replace drive shaft bearings if needed.
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
s. Continue or reassemble in reverse order. When replac-
ing timing belt, refer to timing belt instructions and
be sure that counterweights are aligned properly.
DO NOT PLUG IN THE PORTA-SCREEN® UNTIL YOU ARE
READY TO USE IT.
3. Counterweight Shaft Bearings: Each of the two Counterweight Shafts (#12, #13) has a front and a rear Bearing
(#41). We recommend replacement of both bearings on
a shaft. If you have disassembled the Porta-Screen® to
replace the connecting rod and/or drive shaft bearings,
skip to step h. Otherwise, disassemble as follows:
a. DISCONNECT AND LOCK OUT ELECTRIC POWER.
b. Remove and set aside tray and pan.
c. Remove Top Frame Screws (#2).
d. Lift o Top Frame Crossbar (#1).
e. Remove all case covers.
f. Remove the Connecting Rod Mounting Bolt (#24).
g. Lift the entire vibrating unit assembly up and out of
the Porta-Screen® frame.
h. Loosen the Idler Bracket Mounting and Adjusting
Screws (#45, #46) to release tension on the timing
belt.
®
DO NOT PLUG IN THE PORTA-SCREEN
UNTIL YOU ARE
READY TO USE IT.
4. Wire Cloth: Check condition of wire cloth both before
and after operation. Test results can be only as accurate
as the size of wire cloth openings. Always replace with
testing grade wire cloth only.
Testing grade wire cloth is a precision-made material and
should be treated with care. The ASTM E 11 specication
permits only very slight variations in average opening
and wire diameter. Abrasion due to normal use and/
or improper cleaning and handling can cause the wire
cloth to be out of specication to a considerable degree
before it appears worn. Check it frequently to be sure
that it conforms to your test specications.
Wire cloth life can be extended by establishing proper
procedures for handling, cleaning, and storage of trays.
The Porta Sample Pan Accessory is helpful in the repetitive sequence of emptying trays, cleaning wire cloth, and
weighing sample fractions.
Wire cloth may eventually sag, reducing its eective
screening area. Wire sizes 2in to No.14 are rigid and selfsupporting. Trays for No.16 through No.80 wire cloth
contain three wire cloth support strips. No.100 and ner
trays have supporting backup cloth to minimize wear and
distortion. When you replace No.16 and ner wire cloth,
always use support strips or backup cloth as indicated.
i. Remove the Timing Belt (#16).
j. Loosen the bolts on the Rear Counterweight Clamp
Bracket (#43), and remove the counterweight from
the shaft.
k. Loosen the setscrew which holds the rear bearing to
the counterweight shaft.
l. Remove the Mounting Screws (#42) which hold the
Front Counterweight Shaft Bearing (#41) to the main
frame.
m. Pull the counterweight shaft from the front of the
machine with its front counterweight, pulley, and
front bearing all attached.
n. Reinstall parts as needed.
o. Reassemble in reverse order. When replacing timing
belt, refer to timing belt instructions and be sure that
the counterweights are aligned properly.
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
5.0 PARTS LIST
5.1 PS-3 & PS-4 Parts List
Item No. Part No. Description No. Req’d
OUTER CASE & FRAME PARTS
1 RPPS-3KEY1 Top Frame Cross Bar 1
2 RPPS-3KEY2 Top Frame Screw & Lock Washer 4
31 RPPS-3KEY31 Bullseye Level with Cushion Washer 1
36 RPPS-3KEY36 Bullseye Level Adjusting Screws 3
27 RPPS-3KEY27 Leg Lock Tab 3
33 RPPS-3KEY33 Leg Lock Tab Spring 3
65, 28
29 RPPS-3KEY29 Main Frame for PS-3, PS-3F 1
30 RPPS-3KEY30 Vibrating Unit Assembly for PS-3, PS-3F 1
11A RPPS-3KEY11A Lower Case Cover, Front 1
UPPER GUIDE BEARING ASSEMBLY PARTS
34 RPPS-3KEY34 Upper Guide Bearing Housing with Guide Bushing 2
35 RPPS-3KEY35 Upper Guide Bearing Mounting Screw & Lock Washer 4
4 RPPS-3KEY4 Upper Guide Bearing Pin & Set Screw 2
CLAMPING ASSEMBLY PARTS, RIGHT & LEFT
5A RPPS-3KEY5A Clamp Lever w/Mounting Bracket (6F), Left Side PS-3, PS-3F 1
5B RPPS-3KEY5B Clamp Lever w/Mounting Bracket (6F), Right Side, PS-3, PS-3F 1
38 RPPS-3KEY38 Clamp Lever Handle Grip 2
6R RPPS-3KEY6R Rear Clamp Lever Mounting Bracket 2
39 RPPS-3KEY39 Clamp Lever Mounting Bracket Screw & Lock Washer 8
7 RPPS-3KEY7 Clamp Tension Rod for PS-3, PS-3F 4
40 RPPS-3KEY40 Clamp Tension Rod Retainer Clip, Screw & Lock Washer 4
8 RPPS-3KEY8 Clamp Bar 1
9 RPPS-3KEY9 Clamp Adjusting Nut & Spacer 4
COUNTERWEIGHT ASSEMBLY PARTS
12 RPPS-3KEY12 Left Counterweight Shaft (Short) 1
13 RPPS-3KEY13 Right Counterweight Shaft (Long) 1
41 RPPS-3KEY41 Counterweight Shaft Bearing 4
42 RPPS-3KEY42 Counterweight Shaft Bearing Mounting Screw & Lock Washer 8
14 RPPS-3KEY14 Counterweight for PS-3, PS-3F 4
43 RPPS-3KEY43 Counterweight Clamp Bracket for PS-3, PS-3F 4
44 RPPS-3KEY44 Counterweight Clamp Bracket Bolt & Lock Washer 8
15 RPPS-3KEY15 Counterweight Shaft Pulley & Set Screw 2
16 RPPS-3KEY16 Timing Belt 1
17 RPPS-3KEY17 Idler Bracket 1
45 RPPS-3KEY45 Idler Bracket Mounting Screw with Lock & Flast Washers 2
46 RPPS-3KEY46 Idler Bracket Adjusting Screw with Locking Nut 1
18 RPPS-3KEY18 Idler Pulley Mounting Screw & Lock Washer 1
19 RPPS-3KEY19 Idler Pulley with Bearing Set 1
RPPS-3KEY65/28
RPPS-4KEY29 Main Frame for PS-4, PS-4F
RPPS-4KEY30 Vibrating Unit Assembly for PS-4, PS-4F
RPPS-3KEY10 Upper Case Cover 2
RPPS-3KEY11B Lower Case Cover, Rear 1
RPPS-4KEY5A Clamp Lever w/Mounting Bracket (6F), Left Side PS-4, PS-4F
RPPS-4KEY5B Clamp Lever w/Mounting Bracket (6F), Right Side, PS-4, PS-4F
RPPS-4KEY7 Clamp Tension Rod for PS-4, PS-4F
RPPS-4KEY14 Counterweight for PS-4, PS-4F
RPPS-4KEY43 Counterweight Clamp Bracket for PS-4, PS-4F
Leveling Leg (65), with Adjusting Screw Pad, Nut & Washer 3
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
5.1 PS-3 & PS-4 Parts List (Continued)
Item No. Part No. Description No. Req’d
DRIVE SHAFT ASSEMBLY PARTS
20 RPPS-3KEY20 Drive Shaft with Eccentric & Roll Pin 1
47 RPPS-3KEY47 Drive Shaft Bearing 2
42 RPPS-3KEY42 Drive Shaft Bearing Mounting Screw & Lock Washer 4
49 RPPS-3KEY49 Timing Pulley & Set Screw 1
21 RPPS-3KEY21 Drive Pulley with Set Screw 1
22 RPPS-3KEY22 Drive Belt 1
CONNECTING ROD ASSEMBLY PARTS
RPPS-3KEY23 Connecting Rod Assembly ( Parts 50, 51, 52) 1
50 RPPS-3KEY50 Connecting Rod with Grease Fitting 1
51 RPPS-3KEY51 Connecting Rod Rubber Bushing 1
52 RPPS-3KEY52 Connecting Rod Bearing with Inner Race 1
24 RPPS-3KEY24 Connecting Rod Mounting Bolt with Lock Nut 1
54 RPPS-3KEY 54 Connecting Rod Mounting Bolt Spacer 2
LOWER GUIDE BEARING ASSEMBLY PARTS
59 RPPS-3KEY59 Lower Guide Bearing Housing with Guide Bushing 1
56 RPPS-3KEY56 Lower Guide Bearing Mounting Screw & Lock Washer 2
26 RPPS-3KEY26 Lower Guide Bearing Pin 1
64 RPPS-3KEY64 Lower Guide Bearing Pin Clamp Bolt with Lock Nut 1
ELECTRIC & DRIVE PARTS
63 RPPS-3KEY63 Motor 115V/60Hz for PS-3, PS-4 1
RPPS-3KEY63-1 Motor 230V/50Hz for PS-3F, PS-4F
60 RPPS-3KEY60 Motor Pulley & Set Screw 1
61 RPPS-3KEY61 Motor Mounting Bolt with Lock & Flat Washer 4
RPPS-3-ECA-MOTOR
Electric Cord Assembly w/plug, 6ft 1
5.2 Replacement Trays, Wire Cloth & Parts
GILSON PORTASCREEN® REPLACEMENT TRAYS, WIRE CLOTH & PARTS
PSA-300 2in to No.4 inclusive
PSA-301 No.5 to No. 14 inclusive
®
Porta-Screen
complete with wire cloth.
PSA-303 No.120 with Backup Cloth
PSA-306 No.200 with Backup Cloth
PSA-310 Dustpan Tray
PSA-325 2in to No.4 inclusive
Replacement Wire Cloth,
complete with metal shields PSA-326B No.16 to No.100 inclusive
and resilient gasket backing.
PSA-225 Backup Cloth (Use with No.100 to No.200)
RPPSA-336-1 Tray Side Clamp (4 Required Per Tray)
Screen Tray Parts
RPPSA-336-2 Tray Bolts & Nuts (12 Required Per Tray)
RPPSA-336-6 Wire Cloth Support (3 Required Per Tray)
Tray s,
PSA-302 No.16 to No.100 inclusive with Wire Cloth Supports
PSA-326A No.5 to No.14 inclusive
PSA-327 No.200
PSA-336 Complete Tray, but without Wire Cloth, Supports or Backup Cloth
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
6.0 PARTS DIAGRAM
6.1 PS-3 & PS-4 Parts Diagram
PS-3 & PS-4 Parts Diagram
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Gilson Company, Inc. Gilson Porta-Screen®: PS-3 & PS-4
7.0 ACCESSORIES
Porta-Screen
®
has Foot-Tab leveling.
PSA-114 Porta Wheels may be attached for added mobil-
ity. Ball-bearing wheel assemblies with rubber tires are
pre drilled for quick attachment to frame of Porta-Screen®.
PSA-114
PSA-367 Porta Sample Pan is helpful in emptying and
cleaning trays and in weighing operations. This 17x30x4in
(432x762x102mm), WxLxD chute-end pan is sized to t inverted trays and hold e ntire samples for cumulative weighing.
Handling is easy with the top swing-away handle and end
handle grip.
Porta-Screen® Tray cloth has metal shields
to eliminate partial openings.
PSA-312 Porta Cover bolts to the top ange to enclose the
sample chamber. It has a latch, and is hinged to open for
introduction of samples.
PSA-367
PSA-312 on PS-3
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