Ametek Chandler Engineering 3260 User manual

INSTRUCTION MANUAL
MODEL 3260
CONSTANT SPEED MIXER
(Original Instructions)
Revision M –May 2022
P/N: 3260-1050
S/N: ____________
2001 N. Indianwood Ave.
Broken Arrow, Oklahoma 74012 U.S.A.
Telephone: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: http://www.chandlereng.com

Copyright © 2015, by Chandler Engineering Company L.L.C.
P.O. Box 470710
Tulsa, Oklahoma 74147
All rights reserved. Reproduction or use of contents in any manner is prohibited without express permission from Chandler Engineering Company L.L.C.
While every precaution has been taken in the preparation of this manual, the publisher assumes no responsibility for errors or omissions. Neither is any
liability assumed for damages resulting from the use of the information contained herein.
This publication contains the following trademarks and/or registered trademarks: AMETEK, CHANDLER ENGINEERING. These trademarks or registered
trademarks and stylized logos are all owned by AMETEK, Inc. All other company, product and service names and logos are trademarks or service marks of
their respective owners.

TABLE OF CONTENTS T-1
Table of Contents
General Information ............................................................... P-1
Introduction ........................................................................................................................... P-1
Purpose and Use......................................................................................................... P-1
Features and Benefits ............................................................................................................ P-1
Specifications ........................................................................................................................ P-2
Symbols Used on Equipment ................................................................................................ P-2
Safety Requirements.............................................................................................................. P-2
Where to Find Help ............................................................................................................... P-3
Section 1 –Installation ............................................................1-1
Unpacking the Instrument ..................................................................................................... 1-1
Utilities Required................................................................................................................... 1-1
Tools/Equipment Required.................................................................................................... 1-1
Setting up the Instrument....................................................................................................... 1-1
Section 2 –Operating Instructions...........................................2-1
Operation ............................................................................................................................... 2-1
Front Panel Description ............................................................................................. 2-1
Mixing a Cement Slurry............................................................................................. 2-2
Resetting Thermal Protection .................................................................................... 2-2
Section 3 –Maintenance..........................................................3-1
Tools Required ...................................................................................................................... 3-1
Cleaning and Service Tips..................................................................................................... 3-1
Calibration Procedure ............................................................................................................ 3-2
Maintenance Procedures........................................................................................................ 3-2
Changing the Blade Assembly................................................................................... 3-2
Changing a Program (P1 –P4) .................................................................................. 3-2
Adjusting Operational Parameters (Advanced) ......................................................... 3-2
Maintenance Schedule........................................................................................................... 3-4
Section 4 - Replacement Parts .................................................4-1
Section 5 - Drawings and Schematics......................................5-1
Copy of Declaration of Conformity

T-2 TABLE OF CONTENTS
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PREFACE P-1
General Information
Introduction
Purpose and Use
The Chandler Engineering Model 3260 Constant Speed Mixer is designed to provide mixing
of cement slurries in accordance with API Specification 10. The mixer features a digital
speed control and display with a built-in tachometer and programming capabilities. The
built-in programs are set for mixing speeds of 4,000 and 12,000 RPM for use with the 1-liter
cup. Alternately, the mixing speed may be adjusted manually via the built-in keypad. As the
load varies, the speed control maintains the speed of the motor at the preset speeds.
The control enclosure is mounted below the mixing cup and motor for ease of use and
display of the mixing speed.
Features and Benefits
•CE certified.
•Constant speed operation is easily observed by the digital display.
•Hardened mixing blades assure long life.
•Four pre-programmable constant speeds, with two pre-programmed speeds (4,000
and 12,000 rpm). The preset speeds can be easily changed to any value between
1,000 and 20,000 rpm for applications outside API Spec 10.
•Push button selection of variable speed allows mixing of shear-sensitive materials at
desired speed.
•One continuous variable speed (1,000 to 20,000 rpm).
•Stainless steel container can withstand abrasive action when mixing cement at high
speeds.
•Heavy-duty industrial-grade mixer assures its trouble-free and long life operation.
•No variation in thickening time test due to changes in shear rate.
•Operator can quickly select API speeds while adding cement to mixer.

P-2 PREFACE
Specifications
Input Voltage (Model 3260-110V): 120 VAC
(Model 3260-220V): 230 VAC
Input Current (Model 3260-110V): 13A
(Model 3260-220V): 6.5A
Frequency: 50/60HZ, 1 PHASE
Environment: Indoor Use
Altitude: 2000 m
Temperature: 5 –40 °C
Maximum Relative Humidity: 80 % for temperatures up to 31 °C decreasing linearly to
50 % at 40 °C
Maximum Operating Cycle: 1 minute ON / 3 minutes OFF
Container Material: Stainless steel
Maximum Speed: 20,000 rpm
Speed Selection Switch: Integral keypad to quickly select the desired speed
Constant Speeds: Four independently adjustable speeds over a wide range
of rpm, adjusted by Chandler to 4,000 and 12,000 rpm
(per API Spec 10)
Adjustable Speeds: From 1,000 to 20,000 rpm
Display: Speed is displayed directly in rpm
Cabinet: Stainless steel
Container Volume: 1 quart (1-liter)
Dimensions: 17” (43 cm) high x 9” (23 cm) wide x 10” (25 cm) deep
Net Weight: 15 lbs (7 kg)
Symbols Used on Equipment
Symbol
Meaning
Protective Conductor
Terminal
Documentation must be
consulted in all cases
where this caution symbol
is marked.
Hot Surface
Safety Requirements

PREFACE P-3
READ BEFORE ATTEMPTING OPERATION OF INSTRUMENT
The Chandler Engineering Model 3260 Constant Speed Mixer is designed for operator
safety.
To ensure safety:
•If the instrument is not used in accordance to this manual, the safety of the instrument
may be impaired.
•Locate the instrument in a low traffic area and ensure the cooling vent is not
obstructed.
•Always position the instrument in such a manner that allows easy access to the power
cord.
•Post signs where the instrument is being operated to warn non-operating personnel.
•Read and understand instructions before attempting instrument operation.
•Observe caution notes.
•Observe and follow the warning labels on the instrument.
•Always disconnect main power to the instrument before attempting any repair and
before cleaning.
•Appropriately rated fire extinguishers should be located within close proximity.
•Avoid contact with moving parts.
•Don’t remove container lid while operating the mixer.
•Don’t remove the container while the motor is running.
•Always wear hearing protection when operating the mixer.
Before attempting to operate the instrument, the operator should read and understand this
manual.
Where to Find Help
In the event of problems, contact your local sales representative or Chandler Engineering:
•Telephone: [phone]
•Fax: [phone]
•E-mail: [email protected]
•Website: www.chandlereng.com
Instrument training classes are also available.

P-4 PREFACE
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SECTION 1 –INSTALLATION 1-1
Section 1 –Installation
Unpacking the Instrument
The following components are included with the complete 3260 system:
•Mixer base
•Viton 1 Liter cup adapter
•Mixer drive shaft
•Mixer cup (1-Liter) with lid
Accessories supplied with instrument (check against accessory list inside the packing).
NOTE: Verify all parts listed on packing slip have been shipped with
instrument. If parts are missing, contact Chandler Engineering.
Utilities Required
Model 3260-110V: 120 VAC
Model 3260-220V: 230 VAC
Tools/Equipment Required
None required
Setting up the Instrument
1. Install the rubber adapter over the adapter shaft.
2. Install the cup into the rubber adapter.
3. Connect the power cord from the mixer base to an appropriately rated power source in
accordance with local wiring codes.
CAUTION: Wear hearing protective when using the mixer.
CAUTION: Check your power supply against your Model 3260 system
power rating. Damage can occur if incorrect line voltage is
applied.

1-2 SECTION 1 –INSTALLATION
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SECTION 2 –OPERATING INSTRUCTIONS 2-1
Section 2 –Operating Instructions
Operation
The control enclosure includes four program buttons (P1-P4) located just below the display.
All program buttons are preset at 4,000 RPM for 15 seconds followed by 12,000 RPM for 35
seconds. These buttons may be programmed for up to 8 speed / time combinations (1,000 to
20,000 RPM and 0 to 999 seconds). Refer to the Maintenance section of this manual for
additional information on how to reprogram the functionality of these buttons.
Alternatively, starting the mixer via the Start/Stop button allows the speed to be manually
controlled via the Speed +/- buttons for continuous operation of the motor (up to 9999
seconds).
Front Panel Description
1. LCD Display –Displays current speed, mixing time and allows setup, programming,
etc.
2. Program Buttons –Allows the mixer to operate at preset speeds for preset time
intervals. Factory default settings for all Program Buttons are as follows:
a. 4,000 RPM for 15 seconds
b. 12,000 RPM for 35 seconds
3. Power On/Off (Standby) Button –Turns the power on/off.
4. Manual Speed Control Buttons –Controls the mixer speed. If idle, the Start/Stop
button must be pressed to run at the prescribed manual speed.
5. Time +/- Buttons –Used for configuring the mixer and setting program parameters.
6. Start/Stop Button –Stops the mixer if it is currently running. Starts the mixer in
manual speed control mode if it is currently stopped.

2-2 SECTION 2 –OPERATING INSTRUCTIONS
Mixing a Cement Slurry
CAUTION: Wear eye protection when using the mixer.
NOTE: These instructions assume that the Program Button has not been changed from
the factory default schedule.
1. Measure the amount of water and pour into the mixer cup.
2. Using a scale, measure the amount of cement.
3. Turn the power/standby switch to on (LCD display illuminated).
4. Press a Program Button (P1 though P4). The motor will operate at 4,000 RPM.
5. Add the measured cement into the mixer cup as the water is mixed.
6. Replace the mixer cup cover prior to the expiration of the 15 second timer.
7. When the timer has expired, the mixer will automatically increase speed to 12,000
RPM. The motor will turn off when the timer countdown (35 seconds) has ended.
NOTE: Mixer should run for 15 seconds at low speed (4,000 RPM) and
for 35 seconds at high speed (12,000 RPM) in accordance with
API Specification 10.
WARNING: Following operation, the mixer cup could be hot. Always use a
protective thermal glove to grip the handle to prevent burns.
Resetting Thermal Protection
•The 3260 Mixer is equipped with an automatic reset switch to protect the motor from
overheating.
•If the mixer stops running due to heavy use, push the “STANDBY” button and
unplug the power cord. Empty the mixer cup and allow approximately 5 to 10
minutes for the motor to cool down.
•Plug the power cord back into the outlet and continue mixing.
•If the 3260 mixer does not function properly following this procedure, discontinue
use and contact a Chandler Engineering Technical Sales representative.

SECTION 3 –MAINTENANCE 3-1
Section 3 –Maintenance
Tools Required
Basic hand tools.
Cleaning and Service Tips
Most of the problems that occur with the 3260 mixer motor are due to inadequate cleaning of
the mixing blade assembly. If the blade assembly becomes contaminated with cement, the
assembly will bind and cause the motor to over heat. The blending assembly, mixing cup
and mixer base should be thoroughly cleaned after each use. As long as the cement doesn’t
set up, the blending assembly, mixing cup and mixer base can be washed with soapy water
using Dishwashing liquid. Rinse with water and dry thoroughly.
Blending Assembly (if it is necessary to remove from cup):
•Remove from mixing cup. NOTE: Blades are sharp. Handle with care.
•Wash using soapy water.
•Ensure all cement has been removed.
•Rinse with water and dry thoroughly.
Mixing Cup:
•Remove mixing cup from mixer base.
•Remove lid.
•Wash lid and mixing cup using soapy water. NOTE: If Blending Assembly hasn’t
been removed, the blades are sharp. Handle with care.
•Ensure all cement has been removed.
•Rinse with water and dry thoroughly.
Mixing Base:
•Unplug power cord.
•Remove mixing cup from mixer base.
•Wipe down exterior surfaces of mixer base with soft cloths or sponges dampened with
soapy water. Prevent liquid from running into mixer base.
•Allow mixer base to air-dry before using.

3-2 SECTION 3 –MAINTENANCE
Calibration Procedure
The mixing speed can be checked using a traceable tachometer.
Maintenance Procedures
Changing the Blade Assembly
To change the blade assembly, follow the procedure below:
1. Remove the nut on the bottom outside with a 7/8" socket, pull the blade assembly
through the cup.
2. Remove the small "acorn" nut with a 3/8" wrench.
3. Replace blade with a new one.
4. Tighten acorn nut onto new blade.
5. Reinsert the blade assembly through the cup.
6. Tighten the nut on the bottom outside.
Changing a Program (P1 –P4)
The mixer is equipped with four program buttons (P1-P4), which can be reprogrammed for
any speed and mixing time. A program can have from one to eight sequential steps, each
consisting of a mixing speed and timer count.
1. To enter program mode, press the Speed +/- buttons simultaneously.
2. Press the program button to be reprogrammed (P1-P4).
3. Select a speed using the Speed +/- buttons.
4. Press the Start/Stop button.
5. Select a mixing time using the Time +/- buttons.
6. Press the Start/Stop button.
7. To assign more speeds to be executed in sequence, press the Start/Stop button and repeat
steps 3 thru 6.
8. To save the program and exit programming mode, press and hold the Speed +/- buttons
simultaneously.
Adjusting Operational Parameters (Advanced)
The mixer is equipped with factory default values for all operational parameters, which have
been carefully selected for optimal operation of the unit. Although instructions for doing so
are included here, it is generally not required or recommended to change these values.
1. To enter configuration mode, press the Time +/- buttons simultaneously for several
seconds.
2. A parameter list will appear. To scroll through the list, use the Speed +/- buttons.
3. To select a parameter, use the Start/Stop button.
4. To adjust the value of the selected parameter, use the Speed +/- buttons.
5. To accept the new value, press the Start/Stop button.
6. The parameter list will reappear. To scroll through the list and select other parameters,
use the Speed +/- keys.

SECTION 3 –MAINTENANCE 3-3
7. To save the new settings and exit configuration mode, press and hold the Time +/-
keys simultaneously.
The available parameters for adjustment are listed below, along with their factory default
values.
•Speed Pb Value (Proportional band for PID control loop) –29500
•Speed Ti Value (Integral/reset time for PID control loop) –3300
•Speed Td Value (Derivative time for PID control loop) –3300
•ACCELERATION –5,000 RPM/sec
•DECELERATION –5,000 RPM/sec
To restore Factory Defaults (this will restore default programs and PID values):
•Unplug the mixer
•Hold down the P1 and P4 buttons
•Plug in the mixer. The mixer screen will show “STUCK KEY”and “POWER
OFF”and the backlight will strobe at 1Hz (turn off and on every second).
•Release P1 and P4; the backlight will stop strobing.
•Unplug the mixer and then plug it back in.

3-4 SECTION 3 –MAINTENANCE
Maintenance Schedule
MAINTENANCE SCHEDULE
INSTRUMENT NAME
COMPONENT
EACH TEST
MONTHLY
3 MONTHS
6 MONTHS
ANNUAL
Blending
Assembly
Clean and Inspect
for wear and leaks
Mixing Cup
Clean
Control Base
Clean
Mixer Motor
Clean
Blending Blade
⚫Inspect and
Replace Blending
Blade (10% or
greater weight loss
may result in a
thickening time
change of 10% or
greater)
O-Ring
Inspect and
replace if broken
This maintenance schedule applies to normal usage of two tests per day. Detailed procedures for these operations are
contained in your manual.
⚫Per API Specifications
Where Applicable

SECTION 4 – REPLACEMENT PARTS 4-1
3260-REPL_PARTS REV B
Section 4 - Replacement Parts
Part Number Description
30-0048 Blending Assembly
30-0049 Hardened Blade
30-0056 Container
30-0180 Adapter, Mixer Base, 1 Liter
30-0210 Mixer Base, 110V
30-0211 Mixer Base, 220V
30-0228 Drive Clutch Assembly, 1L Mixer
P-1798 O-ring
To ensure correct part replacement, always specify Model and Serial Number of instrument when
ordering or corresponding.

4-2 SECTION 4 – REPLACEMENT PARTS
3260-REPL_PARTS REV B
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SECTION 5 – DRAWINGS AND SCHEMATICS 5-1
3260-DWGS REV C
Section 5 - Drawings and Schematics
Drawing Number
Description
3260-110V
Mixer, 1-QT, 110V
3260-220V
Mixer, 1-QT, 220V
30-0228
Drive Clutch Assembly, 1L Mixer

5-2 SECTION 5 – DRAWINGS AND SCHEMATICS
3260-DWGS REV C
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