PRAWNTO MLG Series User manual

1Prawnto Shrimp Machine Co. of Texas
SHRIMP CUTTER AND DEVEINERSHRIMP CUTTER AND DEVEINER

2Prawnto Shrimp Machine Co. of Texas
CONGRATULATIONS
You have just purchased one of the most excing and serviceable machines
you have ever had in your operaon. With proper care, your PRAWNTO™
Shrimp Machine will provide you years of quality service!
ATTENTION
Check your new PRAWNTO™ for freight damage immediately.
Do not discard the original shipping carton.
The carrier will not honor a claim without the original box.
If damage has occurred, contact your delivery company
and report the nature of the damage.
Also, call us for a replacement machine.
(From US – 1 800 426 7254, Internaonal – 011 903 527 4149)
WARRANTY
Prawnto Shrimp Machine Co. of Texas Warrants the Prawnto™ Shrimp Machine for one
year against defects in parts and workmanship, including the electrical motor, except for
normal wear and tear of belts, rubber discs, roller and cung blade sharpness. Notwith-
standing the foregoing and except as to the electric motor, this warranty is limited to a term
of ninety days from date of purchase where the machine is used for commercial processing
of shrimp for its inial preparaon for sale to retailers. No warranty covers damage due to
customer abuse or neglect. All warranty repair work shall be performed at Prawnto Shrimp
Machine Co. of Texas with all shipping costs to and from Prawnto™ to be paid by the
purchaser. Proof and date of purchase is a prerequisite to the eecveness of any warranty.
There are no warranes, which extend beyond the descripon on the face hereof. Seller
does not warrant merchantability or tness for a parcular purpose.
DIELECTRIC TESTING
Prawnto has a strict company standard to test all Prawnto MLG 2-4 series machines prior to
nal packaging. Our tesng standards are as follow:
Test Voltage Test Time OR Test Voltage Test Time
1000 VAC/1400 VDC 60 s 1200 VAC/1700 VDC 1s

3Prawnto Shrimp Machine Co. of Texas
Owners Manual Content
WARRANTY.................................................................................................................... 2
DIELECTRIC TESTING ................................................................................................. 2
OWNERS MANUAL CONTENT................................................................................... 3
CONTROL CHANGE LOG ........................................................................................... 3
PRAWNTO™ SHRIMP MACHINE .............................................................................. 4
AVAILABLE PRODUCTS.............................................................................................. 5
Accessories ...........................................................................................................................6
Additional Products .......................................................................................................7
IMPORTANT SAFEGUARDS....................................................................................... 8
SETTING UP YOUR PRAWNTO ……………………………………………………………….9
CLEANING PROCEDURES .........................................................................................10
MAINTENANCE............................................................................................................11
Preventative Maintenance.......................................................................................12
ALIGNMENT .................................................................................................................13
TROUBLE SHOOTING................................................................................................14
PARTS AND ACCESSORIES.......................................................................................15
Diagrams....................................................................................................................... 15-18
Parts List............................................................................................................................19
CONTACT INFORMATION........................................................................................20
OWNERS MANUAL CONTROL CHANGE LOG
Last Update Change
06/01/19 Updated Physical Address Locaon
01/01/19 Updated Version of Owner’s Manual
01/01/19 Added Bullet to Important Safe Guards
01/01/19 Added Info to Prawnto Shrimp Machine
03/01/16 Revised: Table of Contents and Parts List
03/01/16 Seng Up Your Prawnto New Page Added to Manual
11/04/13 Dielectric Tesng Policy
10/30/13 MLG-BC Series Removed from Manual
05/13/06 MLG-BC Machine and Components Added to Manual
07/24/03 New Updated Version of Owner’s Manual

4Prawnto Shrimp Machine Co. of Texas
Prawnto™ Shrimp Machine
We manufacture the "PRAWNTO™ shrimp cuer and deveiner - the most dependable
piece of equipment of its kind on the market today. Because it is powered by a ¼ hp. mo-
tor and constructed of aluminum and stainless steel, and high quality standards are used in
the manufacturing processes, we oer a 1-year warranty.
What exactly does the PRAWNTO™ do?
The opmal cung posion is (head or headless) down, back to blade. It cuts the shrimp
down the back to any depth while destroying most of the sand vein. The shell is then easily
removed by "pinching" or pulling it o from the underside. The tail can be removed or le
on for any presentaon required.
What about cung dierent sizes of shrimp?
Here is the beauty of the Prawnto... It's adjustable for dierent shrimp sizes. Our patented
roller system allows you to control the length of the cut while the depth knob controls the
depth of the cut.
Can the PRAWNTO™ buery?
Yes. The cut will be deep in the front to fan the shrimp for beer presentaon while
stopping at the tail secon for ecient breading or skewering. Round cut and western
cuts are also possible with the Prawnto™.
How fast is the Prawnto™?
Inexperienced operator can cut shrimp at the rate of 4,000 shrimp per hour.
Experienced operator can cut shrimp at the rate of 6,000 shrimp per hour.
Formula: Pieces per hour, divided by count size, equals weight per hour processed
What are the size ranges the PRAWNTO™ can handle?
U10 down to 90/115 count green headless product. Head-on shrimp can also be run
through the Prawnto.
Will there be any damage or miss-cut shrimp?
NO. With proper, simple maintenance and cleaning, the cung blade will always cut down
the center of the shrimp's back each and every me.

5Prawnto Shrimp Machine Co. of Texas
AVAILABLE PRODUCTS
The Prawnto™ Shrimp Machine is available in three models:
Prawnto™ Shrimp Machine MLG-2K Specicaons:
Dimensions: W-11 ½", L-17 ¼", Hgt.-10 ½"
Shipping Weight: 31 Pounds
Electrical: 115V, 60 C.P.S. ¼ H.P.,, 5.1 amp
Also 220V, 50 & 60 C.P.S., 2.7 amp
Lisngs:
MLG-2K (FIG 1.2)
Prawnto™ Shrimp Machine MLG-4
Specicaons:
Dimensions: W-11 ½", L-17 ¼", Hgt.-10 ½"
Shipping Weight: 34
Electrical: 115V, 60 C.P.S. ¼ H.P.,, 5 amp
Internal Cooling Fan for connuous operaon
Also 220V, 50 & 60 C.P.S., 2.7 amp
Lisngs:
Specicaons:
Dimensions: W-11 ½", L-17 ¼", Hgt.-10 ½"
Shipping Weight: 32 Pounds
Electrical: 115V, 60 C.P.S. ¼ H.P.,, 5.1 amp
Also 220V, 50 & 60 C.P.S., 2.7 amp
Lisngs:
MLG-3(FIG.1.1)
Prawnto™ Shrimp Machine MLG-3
MLG-4 (SHOWN WITHOUT COVER) (FIG. 1.3)

6Prawnto Shrimp Machine Co. of Texas
Accessories
The following Prawnto Accessories, when used with the Prawnto Shrimp Machine
MLG Series, allows for quicker and more ecient shrimp producon.
Speed Pan Model 600
Designed with built-in funnel for faster operaon if
Model 900 processing staon is not used. Fits any
model Prawnto ever sold.
MLG-3 With Speed Pan Model 600 (g. 1.5) Processing Table Model 900
Processing Table Model 900 (g 1.6)
(Tub not included)
Welded 300 series stainless steel, NSF
listed with 5" casters, two locking.
Ergonomically correct for speed and
comfort while allowing for the fastest
speed of operaon. It is a self-
contained processing staon that can
be used anywhere there is a power
plug. No assembly required!

7Prawnto Shrimp Machine Co. of Texas
Addional Products
EZ Shucker Model EZ-100
Specicaons:
Height 19”
Width 12”
Length 12”
Ship Weight 13 lbs.
Model EZ-100 (Fig 1.8)
The EZ Shucker quickly and easily opens oysters and other bivalves, including clams, scallops and mussels.
The EZ Shucker is safe and easy. The knife is protected by a Lexan blade guard and is easily controlled by
the machine handle. The blade never points at the hand while the knife is moved with a natural patented
shucking moon.
The EX Shucker is craed from high-quality stainless steel and commercial grade plascs. There is a full
year guarantee on all parts, material and labor.
The EZ-Shucker easily separates clusters of oysters into singles so you can save up to 50% o premium pric-
es for select grades and sll purchase top quality products.

8Prawnto Shrimp Machine Co. of Texas
Important Safeguards
When using electrical appliances, basic safety precauons should
always be followed.
Use the following important safeguards whenever using your PRAWNTO SHRIMP CUTTER:
 Read all instrucons!
 For commercial use only!
 To protect against risk of electrical shock do not immerse base in water or other liquid.
 Unplug from outlet when not in use, before pung on or taking o part and before
cleaning.
 Avoid contacng moving parts. Never put ngers or utensils into feed or discharge areas.
Never take round cung guard o when motor is running and never operate without safety
guard secured.
 Do not operate any appliance with a damaged cord or plug or aer the appliance malfuncons,
or is dropped or damaged in any manner. Return appliance to the nearest authorized service
facility for examinaon, repair or electrical or mechanical adjustment.
 The use of aachments not recommended or sold by the appliance manufacturer may
cause re, electrical shock or injury.
 Do not let cord hang over edge of table or counter or touch hot surfaces.
 Always operate Prawnto Shrimp Machine with all covers and guards in place.
 To avoid injury, always have Prawnto Shrimp Machine in place before starng.
 The 220 Volt Prawnto Shrimp Machine’s electrical plug will need to be changed to
match your specic electrical outlet.

9Prawnto Shrimp Machine Co. of Texas
Setting Up Your Prawnto
MLG-Series
The Prawnto™ Shrimp Machine can process any size of shrimp by making some simple adjustments with
the tool kit provided with your Prawnto™ Shrimp Machine. The Prawnto has been set up to process
Shrimp Sizes 21/25 and 26/30 as the most common shrimp sizes in restaurants. The following
instrucons are to accommodate those using larger and smaller shrimp sizes.
 The Solid Stainless Spacer #434 S has been provided as a starng point width of the Feeder Discs
#313.
Add addional #434 Spacers (found in your tool kit) for larger shrimp
Replace the #434 S with the #434 Spacers for smaller shrimp
 By seng the width of the Feeder Disc #313 you allow the disc to hold your shrimp upright and
allow the centered blade to hit the middle of the shrimp’s back for the deveining process.
 Feeder Discs width that are too ght will not allow larger shrimp to be inserted and a feeder discs
width set too wide will cause side cuts on smaller shrimp.
 The Roller Disc Assembly #314 has ve plasc spacers and is set for the standard width just like the
Solid Spacer #434 S. There will be three plasc spacers on the inside and two plasc spacer on the
outside (one on each side) for a total of 5 plasc spacers. The Roller Disc rides between the Feeder
Discs #313 and it is this contact point where the Feeder Discs turns the Roller Discs. Keep all ve
plasc spacers on the Roller Disc Assembly and the nut ght on the all-thread plasc bearing.
 Matching the width of both the Roller Disc Assembly and the Feeder Disc will make the best contact
and will cause the Roller Disc to turn in unison with the Feeder Disc. Roller Disc will now turn
clockwise and the Feeder Disc will be turning counter clockwise. This relaonship pulls the shrimp
down and allows the blade to cut and devein the shrimp.
 Adjusng the width of the Roller Disc Assembly will aect the length of the cut. Tightening produces
a long cut and loosening shortens the cut length, this is not to be confused with the depth of the cut
which is controlled by the adjusng knob #503.
 Centering the Feeder Discs and Blade aer seng your width is accomplished by adjusng the
following.
Feeder Disc Sha — Cap Nut # 510 and Hex Nut # 416
Blade Sha — Cap Nut #510 and MLG Back Up Nut #499 L
 If you are not able to center the feeder disc and blade using the adjustments, you will need to
follow the Alignment secon. The Alignment Secon (pg. 13) is usually for much smaller or much
larger shrimp since they require the most adjustment.
 Running test shrimp is the determining factor aer these adjustments and once you have
completed this set up you will not have to do this daily except in locaons running mulple size
shrimp. Keeping a record of the adjustment for each size shrimp and desired cut is recommended.
 If you have any issues with these procedures please call us and we can walk you through this
process.

10 Prawnto Shrimp Machine Co. of Texas
Cleaning Procedures
MLG Series
1. Be sure to unplug the machine before cleaning.
2. Daily – Remove the safety guard #211 by loosening the two
thumb screws securing it. Remove the round cung guard
#208. With the two 5/8” wrenches provided in your tool kit,
remove the blade #310S and the set of two rubber discs
#313, and the nuts and washers securing those parts. (see
gure 2.1)
(g. 2.1)
3. With step 2 accomplished; remove the motor cover
#206 by loosening the Phillips screw on each side.
Next, remove the short sha #504 by pulling it out
from the front splash area aer loosening the set
screw securing it. (see gure 2.2)
(g. 2.2)
4. With the above parts removed, clean them in hot
soapy water or place in the dishwasher. Then
sanized them.
5. Clean the splash area and food zone with hot
soapy water, sanize, then allow to air dry in a
clean protected area .
6. Replace the cung parts, aligning the blade and rubber
discs as shown in the maintenance secon of this
manual. Replace the round cung guard #208 and
re-secure the safety guard #211
with the thumbscrews. (See gure 2.4)
7. Store machine in a clean, protected place for further use.
(g. 2.4)
(g. 2.3)

11 Prawnto Shrimp Machine Co. of Texas
Maintenance
Apply Prawnto Oil to the Contact Points Daily :
 Feeder Discs #313
 Roller Disc Assembly #314
Refer to gure 4.1 for daily oiling locaon.
MLG Series (Fig 4.1)
Prawnto Oil is a “Food Grade” lubricant design for high speed fricon. Oiling Daily will keep the discs exible
and lubricated reducing the disc chaering that occurs due to fricon from the contact points increasing
the life of the discs.
When needed, oil between the Seal Washer #427 and the MLG Stainless Plate #506 this will eliminate the
high pitched squeal resulng from the seal rubbing the stainless plate.
For the alignment procedures follow direcons in the Alignment secon.

12 Prawnto Shrimp Machine Co. of Texas
Preventave Maintenance
In the event of unusual noise it is recommended that the cover be removed aer
the machine has been unplugged at the power source, and these checks be made
periodically:
 Feeder disks oiled
 Pulleys ght on the sha
(Set screws ght)
 Sha collars snug to the nylon washers against the bearing and to sha
(No in or out movement)
 Belt tension snug but not too ght
(About ¾” sag when pressure is applied between the motor pulley and
top sha pulley)
Prawnto Shrimp Machine Co. of Texas stocks all parts and accessories for the
Prawnto Shrimp Cuer. See the secon on Parts in this manual for
informaon on ordering parts and accessories.
MLG Series (Fig 5.1)
To insure a quality cut down the center of the shrimp, the blade
alignment should be checked periodically, for proper alignment,
see the gure 5.1 above.

13 Prawnto Shrimp Machine Co. of Texas
ALIGNMENT
(g 6.2)
Proper alignment is crical to the successful operaon of your Prawnto™ Shrimp Machine. Follow these
simple steps to insure proper alignment for the MLG-Series machine.
1. Unplug Prawnto MLG-Series Shrimp Machine™ from power source.
2. Move Machine to a dry, clean work place.
3. With machine front facing you, unscrew Phillips screws from cover #206 and remove.
4. Unscrew thumbscrews from cover #211 and remove.
5. To remove cover #208 grasp on each side and remove by gently pulling towards you.
6. Using hex key in your Prawnto™ Tool Kit (included) loosen the set screws in the collars #426 and
on pulley #423 of the rubber disk sha.
7. Replace round cung guard #208 with opening posioned at 12:00 o’clock.
8. Now align Feeder Discs #313 to center of feed hole on #208 by sliding sha from side to side.
9. Tighten set screws in collars on the Disc Sha to prevent any back and forth moon of the shas.
10. Remove cung guard #208 once more.
11. Using hex key in your Prawnto™ Tool Kit (included) loosen the set screws in the collars #426 and on
pulley #422 of the blade disc sha. Center the cung blade#310 S between the Feeder Discs #313.
Tighten set screws in collars on the blade disc to prevent any back and forth moon of the shas.
12. Align the belt pulleys #432 & #422 and then ghten the pulley set screws to keep them in place on
the shas.
13. Replace covers and guards # 206, # 208 and #211 and secure with screws.
14. Plug Prawnto™ shrimp machine to power source and begin cung.
15. When #504 sha is removed from the machine by loosening the interior set screw, be sure to replace
the sha with the screw ghtening it to the at side of the sha.
(g 6.1)

14 Prawnto Shrimp Machine Co. of Texas
TROUBLE SHOOTING
The Prawnto™ Shrimp Machine is the most reliable product of it’s kind on the market
today. A simple roune of daily maintenance and oiling using Prawnto™ Oil will prevent
most problems and give your Prawnto™ Shrimp Machine a long and producve life.
This process is described in the Maintenance secon of this manual.
MLG-Series
In the unlikely event that your Prawnto™ MLG Shrimp Machine develops problems use these simple
trouble-shoong steps to resolve most issues.
The machine quits running when hot
The motor has a thermal limiter that will automacally turn the motor o before damage can occur.
Turn the switch to o, unplug the machine and allow to cool. The limiter will reset to allow the mo-
tor to run. Removing the motor cover will permit faster cooling.
Squealing or chaer noise
Oil the 313 and 314 disc contact points with Prawnto™ Oil (part #100) as shown in the maintenance
secon of this manual.
Knocking sound
Unplug machine and remove cover (#206) check for bearing wear or loosening of the sha collars
(#426) which may cause back and forth movement of the sha.
Shrimp is cut o-center down the back
Make sure the blade (#310S) is centered between the two rubber discs (#313). No back and forth
movement of shas.
Shrimp is not cut down the back all the way or shell dented instead of being cut
This is caused by a dull cung blade (#310S). Replace with a new blade, centering it as shown in the
maintenance secon of this manual.
Shrimp begins to tear instead of being cut
The cung blade (#310S) needs to be cleaned, or back and forth sha movement has caused the
problem; also make sure the blade is sharp.

15 Prawnto Shrimp Machine Co. of Texas
Diagrams
The Following Diagrams can be used to idenfy all parts number and accessories:
The Tune Up Kit can be purchased as one
unit #539 (7 parts for a total of 12 pieces)
or as individual pieces. It is recommended
that you replace the items in the tune up kit
once every year In the event of heavy use,
and every two years under normal usage,
or as oen as necessary.
MLG-Series Tune-Up Kit #539 (Fig 9.1)
Fan Assembly Kit
The MLG-4 has the addion of Model 601
Fan Assembly to reduce heat build up during
connuous operaon. Part # 602 is the piggy
-back switch connector and part #603 is the
in-line connector. This kit can be purchased
for the MLG-4 in both 110 or 220 Volts.
PARTS AND ACCESSORIES
Prawnto Shrimp Machine Co. of Texas oers replacements parts and accessories for all models.
Use the following diagrams and tables to determine any parts and accessories needed for your
Prawnto™ Shrimp Machine.
There are four easy way to order parts and accessories from Prawnto Shrimp
Machine Co. Of Texas,
Order by phone: [phone]
Order by email: [e-mail]
Order by mail at:
Prawnto Shrimp Machine Co. of Texas
7624 Pebble Dr. Building #28 Fort Worth, TX 76118
**Request a Quote on Line: www.prawnto.com
Tune Up Kit
#313
#314
#427
#504
#310 S
#432
#434
MLG-4 Fan Assembly Kit #601 (Fig 9.2)

16 Prawnto Shrimp Machine Co. of Texas
MLG- Series 2-4 Interior View 1
(g 9.4)

17 Prawnto Shrimp Machine Co. of Texas
MLG Series 2-4 Interior View 2
(g 9.5)

18 Prawnto Shrimp Machine Co. of Texas
MLG Series 2-4 Exterior View 1
(g 9.8)
Exterior View 2
(g 9.9)

19 Prawnto Shrimp Machine Co. of Texas
Parts List
PART # DESCRIPTION PART # DESCRIPTION
100 Prawnto Oil 433P Press-in Bearing (MLG-2K)
107 Motor 433PBR Pillow Block Bearing
108 Toggle Switch 434 Spacer Washer (1/16" feeder disc spacer)
109 Power Cord 434S Solid Spacer (1/4" standard spacer)
111 Nylon Strain Relief 443 Frame Screw with Nut
112 Rubber Toggle Guard 445 Bearing Mount Screw
113 Liquid-Tight Strain Relief 446 Motor Cover Screw & Washer
114 Ground Wire 447 Motor Bracket Bolt & Washer
115 Switch Wire 450 Tool Kit
203 Switch Guard Lock 499S MLG Back-up Nut (Disc Sha)
204 Switch Guard 499L MLG Back-up Nut (Blade Sha)
205 Frame W/ Motor Support and Small Upright 501 MLG Adjusng Arm
206 Motor Cover 502 Pivot Block
208 Round Cung Guard (stainless) 503 Adjusng Rod W/ Knob
208A Round Cung Guard (aluminum) 504 MLG Roller Sha
209PB MLG Motor Support W/ Mounted Bearings 505 Roller Sha Spacer
211S Safety Guard-Stainless 506 MLG Stainless Plate
212 MLG Small Upright 508 ¼ " Set Collar
213 Thumb Screw 510 Cap Nut
310S Serrated Stainless Blade 511 Foot
313 Set of 2 Feeder Discs (All MLG Series) 512 Lock Nut for Pivot Block
314 Roller Disc Assemble (Buery Roller) 513 Pivot Block Bolt
415 Nylon Washer (For #314) 515 Spring
416 Hex Nut (For #314) 539 Tune-Up Kit
417 Nylon Washer (For #433PBR) 600 Speed Pan
418 Sha for Disc and Blade 601 Fan Assembly Kit
422 MLG Blade Sha Pulley 602 Piggy-Back Switch Connector
423 MLG Disc Sha Pulley 603 In-Line Connector
422M Motor Pulley 604 In-Line Disconnect
426S Split Collar 750 Motor Strap (Set of 2-110V)
427 Seal Washer 752 Motor Bracket (110V)
429S Blade Washer Set of Two 900 Solid Welded Process Staon
430 Belt 18" (4L180) 902 Replacement Funnel for # 900 (Sm. & Lg.)
431 Belt 17" (4L170) 903 Replacement Hose and Clamps for # 900
432 Belt 16" (4L160) 904 Replacement Casters for # 900

20 Prawnto Shrimp Machine Co. of Texas
Your Prawnto™ Shrimp Machine can make virtually any type of cut you desire. Simple
adjustments may be required to make some cuts.
The experts at Prawnto Shrimp Machine Co. Of Texas will be happy to answer any ques-
ons on how to adjust your shrimp machine to make your desired cuts.
For these and any other technical quesons contact
Prawnto Shrimp Machine Co. Of Texas
Call Toll Free
1-800-426-7254
Email
[e-mail]
Mailing Address
Prawnto Shrimp Machine Co. of Texas
7624 Pebble Dr. Building #28
Fort Worth, TX 76118
Or Visit our Website at www.prawnto.com
Printed on March 2016
On the cung edge of shrimp
preparaon and processing