Twister T-ZERO Configuration guide

T-ZERO
Maintenance and
Cleaning Manual
21-10098A_REV00
Version 1.0 March 2020

TABLE OF CONTENTS
Warranty Information .......................................................................................................................... 3!
Important Safety Information .............................................................................................................. 4!
General ............................................................................................................................................ 4!
Combustible Dust Hazard ................................................................................................................ 4!
Before Cleaning the T-ZERO .......................................................................................................... 5!
While Cleaning the T-ZERO ............................................................................................................ 5!
System Overview ............................................................................................................................... 6!
Trimmer Overview ............................................................................................................................. 7!
Horizontal Cyclone Overview ............................................................................................................. 9!
HEPA Filter Stack (HFS) Overview .................................................................................................. 10!
Conveyor Overview .......................................................................................................................... 11!
Engineering Mode ............................................................................................................................ 12!
Engineering Mode Functions ........................................................................................................ 13!
Adjusting the Tilt on the T-ZERO ..................................................................................................... 20!
Conveyor adjustments ...................................................................................................................... 23!
Adjusting the Conveyor Height ...................................................................................................... 23!
Adjusting Feed Conveyor Chute .................................................................................................... 24!
Adjusting Belt Tension on the Conveyor ....................................................................................... 25!
Adjusting Conveyor Sidewall Height .............................................................................................. 25!
Disassembling the T-ZERO .............................................................................................................. 27!
Reassembling the T-ZERO .............................................................................................................. 34!
Cleaning the T-ZERO ....................................................................................................................... 36!
Cleaning Conveyors ......................................................................................................................... 38!
Cleaning the Cyclone and Ducting ................................................................................................... 39!
Inspecting the Trimmer ..................................................................................................................... 42!
Weekly Trimmer Inspection Procedure ......................................................................................... 42!
Long Term Maintenance ................................................................................................................ 44!
Inspecting the HEPA FILTER STACK .............................................................................................. 45!
Weekly HFS Inspection Procedure: ............................................................................................... 46!
Long Term Maintenance ................................................................................................................ 47!
Inspecting the Cyclone ..................................................................................................................... 48!
Long Term Maintenance ................................................................................................................ 48!
Inspecting the Conveyors ................................................................................................................. 49!
Mechanical Adjustments .................................................................................................................. 50!
Adjusting the Rollers ...................................................................................................................... 50!
Adjusting the Blade Contact .......................................................................................................... 58!
Adjusting the Blade Belt Tension ................................................................................................... 60!
Adjusting the Tumbler Belt Tension ............................................................................................... 61!
Recalibrating the Tilt Sensor ......................................................................................................... 62!
Adjusting the Pulse Jet Settings .................................................................................................... 63!

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Troubleshooting ................................................................................................................................ 66!
Trim Made Its Way to the HEPA Filter Stack ................................................................................. 66!
Motor Won’t Turn On ..................................................................................................................... 66!
Tumbler Hitting Blades or Vacuum Bar ......................................................................................... 67!
Trim Quality is Low ........................................................................................................................ 67!
Product is Sticking to the Inside of the Tumbler ............................................................................ 68!
Tumbler is Bouncing Around While Rotating ................................................................................. 69!
Appendix .......................................................................................................................................... 70!
Product Specifications ................................................................................................................... 70!
Material Specifications ................................................................................................................... 71!
Air Requirements – Pulse Jet ........................................................................................................ 72!
T-ZERO Spare Parts ........................................................................................................................ 73!
Spare Parts Kit .............................................................................................................................. 73!
Additional (Non-Critical) Spare Parts ............................................................................................. 75!
Service Parts Replacement and Service Schedule .......................................................................... 78!
Contact Us ........................................................................................................................................ 82!

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WARRANTY INFORMATION
Keirton Inc® will repair or replace any parts proven defective in material or workmanship
without charge for a period of one year.
The warranty period will begin on the date the T-ZERO is commissioned by Keirton or
delivered to the original purchaser without an installation agreement. T-ZERO warranty defects
can be remedied at any authorized service dealer or directly at the manufacturer. Any service
work performed and deemed valid due to a defective part will be free of charge. Keirton
reserves the right to use any manufacture-approved replacement part for warranty repair.
If warranty repair is required, contact Keirton at 1-888-254-3204 or [email protected] with
the following information:
Model and serial number
Proof of purchase date
Details of the defect or problem (including photos, video, etc.)
The T-ZERO or the defective part must be returned to Keirton for analysis and replacement.
DO NOT RETURN DEFECTIVE T-ZERO PARTS TO THE MANUFACTURER FOR
REPAIR OR WARRANTY CLAIMS UNLESS YOU HAVE BEEN AUTHORIZED BY
KEIRTON TO DO SO.
You may be denied warranty coverage if your T-ZERO has failed due to the following:
- Abuse
- Accidental damage
- Improper installation
- Improper electrical connection
- Improper maintenance
- Neglect
- Normal wear
- Unapproved modifications
Keirton assumes no risk and shall be subject to no liability for damages or loss resulting from
the specific use or application of the product. In no event will Keirton be liable for any special,
incidental, or consequential damages (including loss of use, loss of profit and claims of third
parties) however caused, whether by negligence of Keirton or otherwise. If you have any
questions regarding you warranty rights and responsibilities, contact Keirton.
The T-ZERO is intended for use on legal aromatic herbs and hops. Check all municipal,
provincial or state, and federal laws and regulations before using the T-ZERO. Keirton does not
promote or condone the use of the T-ZERO in any way that may be deemed illegal.
Allow only persons who have read and understood this manual to operate the T-ZERO. Keirton
claims no liability for any damage or injury that results from the use of the T-ZERO by persons
who have not read and understood the cautions contained in this manual or through any
misuse of the T-ZERO. You are responsible for your safety while operating this T-ZERO. Keep
yourself safe!
To receive maximum performance and satisfaction from the T-ZERO, it is important that you
read and understand the safety and maintenance precautions in this manual before using the
T-ZERO.

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IMPORTANT SAFETY INFORMATION
GENERAL
This Maintenance and Cleaning Manual is for the Twister T-ZERO trimming system.
The T-ZERO is a high-powered machine that requires special safety precautions to be
practiced while in operation to prevent injury.
The T-ZERO uses an industrial grade HEPA Filter Stack and fan. It is your responsibility to
understand and take the necessary precautions to minimize the inherent risks associated
with combustible dust. Contact Keirton or your local Authority Having Jurisdiction (AHJ) for
further information on your responsibility and liability while using the T-ZERO.
IMPROPER USE OF THE T-ZERO MAY CAUSE SERIOUS OR FATAL INJURY. Read
the precautions and warning labels before operating the T-ZERO.
DO NOT TAMPER WITH OR BYPASS SAFETY SYSTEMS. FAILURE TO ABIDE
COULD CAUSE FATAL INJURY!
A first-time operator should receive proper instruction before using the T-ZERO.
DO NOT OPERATE UNDER THE INFLUENCE OF ALCOHOL OR DRUGS.
Follow routine maintenance schedule.
DO NOT REMOVE SAFETY LABELS. REPLACE SAFETY LABELS IF THEY
BECOME DAMAGED OR OBSCURED.
Lock out power to the T-ZERO before trying to free any jammed parts, disassembly, or
performing maintenance.
DO NOT PROCESS ANYTHING OTHER THAN PLANT MATTER. THE T-ZERO IS
DESIGNED ONLY FOR PLANT MATTER. ANY FOREIGN OBJECTS CAN CAUSE
SERIOUS INJURY OR DAMAGE TO THE T-ZERO!
COMBUSTIBLE DUST HAZARD
Cannabis has been tested by an independent lab under worst-case conditions to be a
class ST1 combustible dust.
IT IS THE RESPONSIBILITY OF THE CUSTOMER TO ENSURE ANY SPECIFIC
APPLICATION REQUIREMENTS OF EXPLOSION VENTING OR IF ANY
ADDITIONAL FIRE PROTECTION AND SAFETY EQUIPMENT MAY BE
REQUIRED.
The customer is urged to adhere to NFPA, OH&S, federal, provincial, and local codes and
regulations applicable to industrial ventilation systems.
Equipment must be adequately grounded and bonded by installing contractor.
The iSMF system has been certified as a passive flame front arresting device. It meets
NFPA.

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Performance based provisions and NFPA 654 and 101 Life Safety Objectives related to
dust collector deflagrations and explosions. According to NFPA 69 Chapter 15, this
equipment must be maintained per the manufacturer’s recommendations. Substituting
filters other than original OEM filters would violate the NFPA standards and void the
performance-based certification of this filter system. This system is a passive isolation
device which meets all of the aforementioned criteria. To sustain this certification the
owner is required to maintain this equipment per the manufacturer’s recommendations and
document periodic inspections as required in chapter 15 of NFPA 69 Standard on
Explosion Prevention Systems.
EQUIPMENT SHOULD BE PROPERLY ANCHORED TO THE GROUND WITH A
SUITABLY SIZED CONCRETE ANCHOR AND ADHERE TO LOCAL CODES AND
REGULATIONS.
BEFORE CLEANING THE T-ZERO
MAKE SURE YOU WEAR PERSONAL PROTECTIVE EQUIPMENT.
• Read this Maintenance and Cleaning Manual to familiarize yourself with the T-
ZERO’s maintenance and cleaning procedures.
• Lock out the power before performing maintenance or cleaning. Inspect the T-
ZERO for damage or any loose parts.
WHILE CLEANING THE T-ZERO
• Make sure you wear proper personal protective equipment.
• Stay clear of pinch-points that could cause injury to personnel, damage to other
equipment, or the T-ZERO.
• Watch for pinch and cutting hazards around the tumbler, sub-lid, lid and blades.
• If using a steam cleaner, operators must wear a respirator suitable for filtering
organics.

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SYSTEM OVERVIEW
DISCLAIMER
Keirton reserves the right to make design changes and/or improvements
in the products they manufacture at any time. Specifications are subject
to change without notice.

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TRIMMER OVERVIEW

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HORIZONTAL CYCLONE OVERVIEW

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HEPA FILTER STACK (HFS) OVERVIEW

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CONVEYOR OVERVIEW

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ENGINEERING MODE
The T-Zero allows modification of advanced features through a password protected
interface called Engineering Mode.
To enable Engineering Mode:
1. From Automatic Mode, tap the Advanced Mode button (highlighted
below).
2. From Advanced Mode, tap the Engineering Mode button (highlighted
below).
3. Enter username and password when prompted. Default username is
“admin” and password is “Keirton” (see image on following page).

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4. Hit OK to return to the Advanced Mode screen.
5. Tap the Engineering Mode button again to move to the next screen.
Note: to log out of Engineering Mode, return to the Automatic Mode screen.
ENGINEERING MODE FUNCTIONS
Water Sprayer Settings
The water sprayer feature automatically applies water to the brush to help lubricate the
tumbler and keep the machine clean while trimming wet.
• The +/- buttons beneath Duration and Interval adjust the
amount of water that will be sprayed.
o Duration refers to how long the sprayers spray for
in each burst.
o Interval refers to how often the sprayers release a burst.

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§ The setpoints in the image at the bottom of page 13
would spray water for 1.5 seconds every 6 seconds.
Advanced Mode
This button returns the operator to the Advanced Mode screen.
Super User Mode
Super User Mode unlocks additional buttons in Advanced Mode (as
shown in the image to the right) with various functions.
•
The Hold to SPRAY button turns on the water
sprayers momentarily.
•
The SysInfo button will take you directly to the
System Information Screen from where you can
troubleshoot motor errors quickly.
•
The Blades REVERSE button reverses the
direction of the blade motor. This is used for
sharpening new blades. Contact Technical
Support for more information (see technical support details at back of
manual).
Automatic Reset
The Auto Drive Error Acknowledgement button resets the motor drive. This feature will
not solve all motor errors. To remove other errors hold both the EMPTY and STOP buttons
for 3 seconds (see Troubleshooting on page 66 if errors do not clear).
Turn on this feature to automatically reset the motor drives.
Tilt Settings
The Tilt Control slide bar removes the ability to adjust the machine tilt in Advanced Mode.
• The Calibration button resets the angle reading to 0 (see Recalibrating
the Tilt Sensoron page 62 for calibration procedure).
+/- Button Interval
The boxes in line to the right with +/- Interval show the increments the setpoints are
changed when +/- buttons are tapped in Advanced Mode. To adjust increments, tap the
boxes and type a new value. The default settings for the incremental changes are:

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o 50 RPM for the Blade Motor setpoints
o 0.5 RPM for the Tumbler Motor setpoints
o 0.5 feet per minute for the Conveyor speed setpoints
o 5% for the Vacuum power.
Start Delay Timer
The boxes in line to the right with Delay Timer show the start sequence of the T-ZERO
motors. To adjust the start sequence, tap the boxes and type a new value.
THE MOTORS NEED TO START IN AN OFFSET SEQUENCE TO AVOID
OVERLOADING THE FACILITY POWER AND OVERLOADING INRUSH
CURRENT.
The factory defaults have the system starting in the following order:
1. Vacuum motor
2. Blades (10 seconds after the Vacuum Motor)
3. Tumbler (18 seconds after the Vacuum Motor)
4. Feed Conveyor (22 seconds after the Vacuum Motor).
5. QC Conveyor (25 seconds after the Vacuum Motor).
ENSURE THE VACUUM MOTOR IS AT LEAST AT 75% OF THE FULL SPEED BEFORE
THE BLADE MOTOR STARTS TO TURN. IF ERRORS OCCUR WHEN THE BLADE MOTOR
STARTS, INCREASE THE TIME SO THE VACUUM IS AT FULL SPEED BEFORE THE
BLADE MOTOR STARTS.
Save Recipe to SD
The Save Recipe button backs up all recipes to the SD card.
THE HMI HAS BUILT IN MEMORY, BUT IF THE PROGRAM NEEDS TO BE RESET
OR UPDATED, ALL RECIPES WILL BE ERASED. ALWAYS BACKUP RECIPES
BEFORE UPDATING OR RESETTING THE HMI.

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Load Recipe from SD
The Load Recipe button retrieves saved recipes from the SD card. Recipe data must be
saved first before data can be restored.
Dynamic Tumbling Settings
The Dynamic Tumbling feature helps optimize the flow of product
through the tumbler by setting the tumbler motor to constantly vary the
RPM to avoid surging (for more information on surging and optimizing tumbler flow, see
Troubleshooting on page 66). When this feature is turned on, Dyn. Will appear on the
TUMBLER motor in Advanced Mode.
•
Amp. +/- adjusts the magnitude the RPM will vary.
•
Period adjusts how quickly the tumbler accelerates and decelerates.
o If the Amp. +/- and Period settings above were applied to a
SETPOINT of 46.5 RPM, the tumbler would start at 46.5
RPM, accelerate to 48.5 RPM, decelerate to 44.5 RPM, and
then return to 46.5 RPM in a period of 10 seconds.
Air Lock Settings
The Airlock blasts compressed air inside the rotors to help clean the rotor
pockets out and prevent bridging above the airlock.
•
The +/- buttons beneath Duration and Interval adjust the
amount of air that will be blasted.
o Duration refers to how long the air will be
blasted in each blast.
o Interval refers to how often each blast will occur.
§ The setpoints in the image above would blast air for
2.5 seconds every 20 seconds.
Set the Airlock to blast as frequently as the supply air can handle. The Airlock will
perform more efficiently and last longer before cleaning is required.
Emptying Timer
The Emptying feature of the Feed Conveyor, Blade Motor, and HEPA
Filter Stack while keeping the Tumbler Motor and QC Conveyor running. The Emptying
Timer adjusts how long the Tumbler Motor will stay on for after the EMPTY button is
pressed.

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Note: Increase the time if product remains in the tumbler after the empty sequence is
complete. Decrease the time if the tumbler is empty while the tumbler motor is still on.
NOTE: IF THE TUMBLER IS DIRTY, SOME PRODUCT MAY STAY IN THE
MACHINE INDEFINITELY. DO NOT PUT YOUR HANDS INSIDE THE TUMBLER!
TO COMPLETELY EMPTY THE TUMBLER, REMOVE THE TUMBLER FROM THE
MACHINE OR LOCK OUT THE MACHINE POWER BEFORE REMOVING ANY
REMAINING PRODUCT.
Motor Status
The Motor Status shows whether the motors are on or off. When motors are on, the status
will read STANDBY.
• The STANDBY button will turn the motors off when pressed. After being
pressed, the STANDBY button will read OFFLINE, and the
corresponding motor will disappear from the Advanced Mode screen.
Motor Presets
The readings in line to the right with Setpoints show the set speeds of the motors. To
modify the set speeds tap the desired box and type a new value. Pressing the High,
Medium, and Low buttons in Advanced Mode will change the motor speeds to what is
shown in the corresponding boxes here.
Vacuum Off Timer
The Vacuum feature runs the HEPA Filter Stack after the blades have stopped to clear any
debris out of the ducting. The Vacuum Off Timer shows how long the HEPA Filter Stack
will run for after pressing the STOP button. The default run time is four seconds (please
read Important Safety Information on following page).

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Note: Increase the time for systems with custom ducting to ensure the ducting is clean for
storage and safety.
Motor Calibration
The Calibration feature allows each motor to be calibrated using a Tachometer.
Set each motor to the maximum speed. Use a tachometer to determine actual RPM
of each motor, then adjust these values to the actual reading to calibrate.
MOTORS ARRIVE FROM THE FACTORY CALIBRATED. DO NOT ADJUST THESE
VALUES UNLESS INSTRUCTED BY TECHNICAL SUPPORT.
Exit Program
This button returns the operator to the PLC start-up screen.
System Info
This button takes the operator to the System Information page (shown on following page).
The System Information page displays:
o Serial numbers
o Machine hours
o Program versions
o Motor logs.
Note: Use the Tumbler and Blades RESET buttons to help keep track of maintenance
intervals. Use the data logger to find out when the machine has been operated and to help
troubleshoot motor errors.
IMPORTANT SAFETY INFORMATION
SETTLED DUST CREATES AN EXPLOSION HAZARD!
SYSTEM DUCTING MUST BE CLEARED AFTER EACH
MACHINE USE TO PREVENT RISK OF FIRE.

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