Thermo Scientific Maxi Mix II User manual

Maxi Mix®II
Vortex Mixer
Operation Manual and Parts List
LT1254X1 • 9/19/08
MODEL NUMBERS
M37615
M37614
M37610-33
M37610-33CN

2
General Specifications ........................................................................................................................................3
Declaration of Conformity ..............................................................................................................................3
Environmental Conditions ..............................................................................................................................3
Safety Information ..............................................................................................................................................4
Important Information ......................................................................................................................................4
Warnings ..........................................................................................................................................................4
Introduction..........................................................................................................................................................5
Intended Use ..................................................................................................................................................5
Principles of Operation ..................................................................................................................................5
Installation ..........................................................................................................................................................6
Unpackaging ....................................................................................................................................................6
Site Selection: ..................................................................................................................................................6
Specifications ..................................................................................................................................................6
Operation ............................................................................................................................................................7
Power Switch: ..................................................................................................................................................7
Speed Control: ................................................................................................................................................7
Maintenance and Servicing ................................................................................................................................8
To Replace the Power Switch: ........................................................................................................................8
To Replace Rheostat (Speed Control): ............................................................................................................8
To Replace Microswitch: ..................................................................................................................................9
To Replace Motor:..........................................................................................................................................10
To Replace Damper Springs: ........................................................................................................................11
To Replace Mixing Surface Disc: ..................................................................................................................12
To Install Single Cup Mixing Head: ..............................................................................................................12
Problem Solving Guide ....................................................................................................................................13
Replacement Parts List ....................................................................................................................................14
Ordering Procedures ........................................................................................................................................14
Exploded View ..................................................................................................................................................15
One Year Limited Warranty ..............................................................................................................................16
Table of Contents

3
General Specifications
Declaration of Conformity
We hereby declare under our sole responsibility that this product con-
forms with the technical requirements of the following standards (230
volt models only):
EMC: EN 61000-3-2 Limits for Harmonic Current Emissions
EN 61000-3-3 Limits for Voltage Fluctuations and
Flicker
EN 61326-1 Electrical Equipment for Measurement
Control, and Laboratory Use; Part I:
General Requirements
Safety: EN 61010-1 Safety Requirements for Electrical
Equipment for Measurement, Control
and Laboratory Use; Part I:
General Requirements
EN 61010-2-051Part II: Particular Requirements for
Laboratory Equipment for Mixing and
Stirring.
per the provisions of the Low Voltage Directive 73/23/EEC, as amended
by 93/68/EEC.
The authorized representative located within the European Community
is:
Thermo Fisher Scientific
419 Sutton Road
Southend On Sea
Essex SS2 5PH
United ingdom
Copies of the Declaration of Conformity are available upon request.
Environmental Conditions
Operating: 17°C - 27°C; 20% - 80% relative humidity,
non-condensing. Installation Category II
(overvoltage) in accordance with IEC 664.
Pollution Degree 2 in accordance with IEC 664.
Altitude limit: 2,000 meters.
Storage: -25°C - 65°C; 20% to 80% relative humidity.

4
Important Information
Your Thermo Scientific Maxi Mix II Vortex Mixer has been
designed with function, reliability, and safety in mind. It is
your responsibility to install it in conformance with local elec-
trical codes.
This manual contains important operating and safety infor-
mation. You must carefully read and understand the contents
of this manual prior to the use of this equipment. For safe
operation, please pay attention to the alert signals through-
out the manual.
Warnings
To avoid electrical shock, always:
1. Use a properly grounded electrical outlet of cor-
rect voltage and current handling capacity.
2. Disconnect from power supply before servicing.
To avoid personal injury:
1. Do not use in the presence of flammable or com-
bustible materials; fire or explosion may result.
This device contains components which may
ignite such materials.
2. Do not turn on mixer unless the speed control is
turned to minimum; failure to do so may cause
accessories and vessels to be thrown off the
mixer.
3. Refer servicing to qualified personnel.
Safety Information
arning
Warnings alert you to a possibility of per-
sonal injury.
Caution
Cautions alert you to a possibility of
damage to the equipment.
Note
Notes alert you to pertinent facts and
conditions.
Alert Signals

5
Intended Use
The Type M37600 vortex mixers are general laboratory
vortex mixers. They are intended for applications where
vortexing of single or multiple tubes is required. Vessels
with closure tops up to a maximum of 125 ml can also be
vortexed.
The unit consists of 1) a mixing surface disc, 2) a three-
position power switch and, 3) an adjustable speed control
(See Figure 1).
Principles of Operation
The mixer incorporates a permanently lubricated motor to
drive the mixing platform. A three-position power switch
enables the mixer to be operated continuously or by
depression of the silicone rubber top. The speed of the
mixer is regulated by an adjustable rheostat. Also, suction
cup feet are incorporated to prevent unit movement.
Figure 1: Maxi-Mix II
Three-position power switch
Mixing surface disc
Adjustable speed control
Introduction

6
Unpackaging
Unpack Maxi-Mix II from box. An interchangeable rubber
cup for mixing test tubes and a replacement mixing surface
disc are included in the box.
Site Selection
Place mixer on a sturdy flat surface.
Specifications
The electrical specifications are located on the specifica-
tion plate on the back of the unit. Consult customer service
if your electrical service is different than those listed on the
specification plate.
Installation
eight Dimensions Electrical
(lbs.) (Inches)
Model No. Net Ship HLTop Diameter Volts Amps Hz
M37615 676” 7” 3.5” 120 .45 50/60
M37610-33 676” 7” 3.5” 230 .20 50
M37610-33CN 676” 7” 3.5” 230 .20 50
M37614 676” 7” 3.5” 100 .56 50/60
arning
Use a properly grounded electrical
outlet of correct voltage and current
handling capacity.
Do not use in the presence of flam-
mable or combustible materials; fire
or explosion may result. This device
contains components which may
ignite such materials.
Note
Some misalignment of the motor
bearings in this product may have
occurred during shipping and han-
dling. Prior to first use, the mixer
should be run at maximum speed for
10 minutes to realign the motor
bearings.
Specifications

7
Power Switch:
The power switch is a combination ON/OFF and mode
switch to enable TOUCH operation. Move the power switch
to either the “FULL” position or the “TOUCH” position. In
the “FULL” position, the mixing head will begin oscillating
automatically. In the “TOUCH” position, the mixing head
will oscillate when it is depressed.
Speed Control:
The speed control is a nonlinear type control. The oscillat-
ing speed will increase at a non-uniform rate as the control
is turned clockwise.
To operate Maxi-Mix, move power switch to either the
“FULL” position or the “TOUCH” position. Turn speed con-
trol to the desired setting. Touching the vessel to the disc
will initiate the vortex action. Mixing action will intensify as
greater pressure is exerted against the mixing surface. To
stop the mixing action, remove vessel from disc or move
the power switch to the “OFF” position. (See Maintenance
and Servicing for installation of the single cup mixing head
and the mixing surface disc).
Operation
arning
Do not turn the mixer on unless the
speed control is turned to minimum;
failure to do so may cause acces-
sories and vessels to be thrown off
the mixer.
Note
There is no absolute limit on the
maximum size of vessel which can
be used; much depends on tech-
nique, the shape of the vessel, the
viscosity of the contents, and the
amount of liquid. (Vessels require
closure tops to prevent contents
from being spilled out during mix-
ing). As a general rule, do not vortex
vessels larger than 250 ml and vol-
umes greater than 125 ml.
Note
Unit may need some loading to slow
the motor when going from fast to
slow.
Note
If the equipment is used in a manner
not specified by the manufacturer,
the protection provided by the equip-
ment may be impared.

8
To Replace the Power Switch:
a) Disconnect mixer from power supply.
b) Peel off the mixing surface disc. Hold the mixing
platform to keep from turning and remove the
platform from the counterweight assembly.
c) Turn mixer upside down and remove the four
screws securing plastic housing. Turn mixer
upright and remove housing.
d) Desolder four wires from switch. Identify or
mark wires disconnected to insure proper
placement and connection when reinstalling.
e) Remove defective switch.
f) Install new switch with the number “3” terminal
on top. Resolder the wires as identified or
marked in Step (d).
g) Reinstall plastic housing and secure with four
screws.
h) While holding the mixing platform to keep it from
turning, secure the platform to the counter-
weight assembly. If the mixing surface is in
good condition, reapply it to the mixing platform.
i) Reconnect mixer to power supply.
To Replace Rheostat (Speed
Control):
a) Disconnect mixer from power supply.
b) Peel off the mixing surface disc. Hold the mixing
platform to keep from turning and remove the
platform from the counterweight assembly.
c) Turn mixer upside down and remove the four
screws securing plastic housing. Also, remove
two screws securing dial plate.
d) Turn mixer upright and remove the housing.
Maintenance and Servicing
arning
Disconnect from power supply before
servicing.
Refer servicing to qualified personnel.

9
e) Desolder the two wires from rheostat. Identify or mark
wires disconnected to insure proper placement and
connection when reinstalling.
f) Loosen set screw on knob and remove knob. Remove
lock nut from rheostat and remove defective rheostat.
g) Insert new rheostat into dial plate and secure with lock
nut. Resolder the wires as identified or marked in Step
(e).
h) Turn rheostat shaft fully counterclockwise and slide
knob over shaft. Align the pointer on knob with the edge
of the graduated band. Secure knob with set screw.
i) Secure dial plate to base.
j) Reinstall plastic housing and secure with four screws.
k) While holding the mixing platform to keep it from turning,
secure the platform to the counterweight assembly. If
the mixing surface is in good condition, reapply it to the
mixing platform.
l) Reconnect mixer to power supply.
To Replace Microswitch:
a) Disconnect mixer from power supply.
b) Peel off the mixing surface disc. Hold the mixing plat-
form to keep from turning and remove the platform from
the counterweight assembly.
c) Turn mixer upside down and remove four screws secur-
ing plastic housing.
d) Turn mixer upright and remove the housing.
e) Remove the four screws holding the motor to the rubber
mounts. Position motor on its side.
f) Desolder the two wires from microswitch and remove
MAINTENANCE AND SERVICING

10
microswitch from motor. Save the spring and plunger
from defective microswitch. Identify or mark wires dis-
connected to insure proper placement and connec-
tion when reinstalling.
g) Insert spring and plunger into the shaft of the new
microswitch. Position microswitch on mounting studs
and secure with two screws. Resolder the wires as iden-
tified or marked in Step (f).
h) Reposition motor and secure with four screws.
i) Reinstall plastic housing and secure with four screws.
j) While holding the mixing platform to keep it from turn-
ing, secure the platform to the counterweight assembly.
If the mixing surface is in good condition, reapply it to
the mixing platform.
k) Reconnect mixer to power supply.
To Replace Motor:
a) Disconnect mixer from power supply.
b) Peel off the mixing surface disc. Hold the mixing plat-
form to keep from turning and remove the platform from
the counterweight assembly.
c) Turn mixer upside down and remove four screws secur-
ing plastic housing.
d) Turn mixer upright and remove the housing.
e) Desolder the two wires from motor. Identity or mark
wires disconnected to insure proper placement and
connection when reinstalling.
f) Remove the counterweight assembly, brackets and
damper springs from top of motor.
g) Remove the motor and then the microswitch assembly
from bottom of motor.
h) Reinstall the components removed in Steps (f) and (g)
to the new motor.
MAINTENANCE AND SERVICING

11
i) Resolder the wires as identified or marked in Step (e).
j) Reinstall plastic housing and secure with four screws.
k) While holding the mixing platform to keep it from turn-
ing, secure the platform to the counterweight assem-
bly. If the mixing surface is in good condition, reapply
it to the mixing platform.
l) Reconnect mixer to power supply.
To Replace Damper Springs:
a) Disconnect mixer from power supply.
b) Peel off the mixing surface disc. Hold the mixing plat-
form to keep from turning and remove the platform
from the counterweight assembly.
c) Turn mixer upside down and remove four screws
securing plastic housing.
d) Turn mixer upright and remove housing.
e) Remove defective damper springs.
f) Install new damper springs.
g) Reinstall plastic housing and secure with four screws.
h) While holding the mixing platform to keep it from turn-
ing, secure the platform to the counterweight assem-
bly. If the mixing surface is in good condition, reapply
it to the mixing platform.
i) Reconnect mixer to power supply.
To Replace Mixing Surface Disc:
a) Disconnect mixer from power supply.
b) Peel off old mixing surface disc and clean the bonding
area.
MAINTENANCE AND SERVICING

12
c) Remove the paper backing from the new mix-
ing surface disc and apply.
d) Reconnect mixer to power supply.
To Install Single Cup Mixing
Head:
a) Disconnect mixer from power supply.
b) Peel off mixing surface disc and while holding
the mixing platform to keep from turning,
remove mixing platform.
c) While holding the rubber mixing cup to keep
from turning, install the single cup mixing head
with the hold down screw.
d) Reconnect mixer to power supply.
MAINTENANCE AND SERVICING
Wiring Diagram

The Problem Solving tips section is intended to aid in defining and correcting possible service problems.
When using the guide, select the problem category that resembles the malfunction, then proceed to the possi-
ble causes category and take necessary corrective action.
13
Problem Possible Causes Corrective Action
Mixer doesnʼt operate when
power switch is in the “Full
On” position.
Check mixer connections to
power supply.
Replace power switch.
Replace speed control.
Replace motor.
Mixer doesnʼt operate when
power switch is in the “Touch
On” position and the disc is
depressed.
Not connected to power sup-
ply.
Defective microswitch.
Speed control at minimum
setting and too much pres-
sure on disc.
Defective speed control.
Defective motor.
Check mixer connections to
power supply.
Replace microswitch.
Turn speed control to higher
setting.
Replace speed control.
Replace motor.
Mixer doesnʼt operate when
power switch is in either “ON”
position.
Check mixer connections to
power supply.
Replace power switch.
Replace speed control.
Replace motor.
Speed control doesnʼt regu-
late speed.
Internal chattering noise.
Defective speed control.
Going from fast to slow
Replace speed control.
Load the unit to slow the
motor.
Defective spring damper links. Replace spring damper links.
Not connected to power
supply.
Defective power switch.
Defective speed control.
Defective motor.
Not connected to power
supply.
Defective power switch.
Defective speed control.
Defective motor.
Problem Solving

1 FSX47 Fastener, Screw (2 required) 8 SWM1861X1 Switch Assembly PCB
2 PT376X2 Plate, Mixing Surface Disc 9 BX49 nob
(1 extra sent with product)
3 PT376X1 Plate, Mixing Platform 10 SWX90 Switch
4 CW1254X1A Counterweight Assembly 11 SPX47 Damper Springs
(2 required)
MTX95 Motor for M37615 *CP376X1A Cup Assembly for
making test tubes
5 MTX96 Motor for M37610-33
12 FZX59 Fuses for
M37610-33 and
MTX97 Motor for M37614 M37515 (2 required)
CR1254X1 Cord Set for M37615
CR376X1 Cord Set for M37614
6
CR1254X2 Cord Set for M37610-33
CRM1861X1 Cordset for M37610-33CN
7 RS871X1A Rheostat Assembly for M37615
RS871X2A Rheostat Assembly for
M37610-33
RS871X3A Rheostat Assembly for M37614
14
Key No. Part No. Description Description
Key No. Part No.
*This is not found on exploded view
Replacement Parts List
Ordering Procedures
Please refer to the Specification Plate for the complete model number, serial number, and series number when
requesting service, replacement parts or in any correspondence concerning this unit.
All parts listed herein may be ordered from the Thermo Scientific dealer from whom you purchased this unit or can
be obtained promptly from the factory. When service or replacement parts are needed we ask that you check first
with your dealer. If the dealer cannot handle your request, then contact our Customer Service Department at 563-
556-2241 or 800-553-0039.
Prior to returning any materials, please contact our Customer Service Department for a “Return Materials
Authorization” number (RMA). Material returned without an RMA number will be refused.

15
Exploded View
Exploded View

One Year Limited Warranty
This Thermo Scientific product is warranted to be free of defects in materials and workmanship for one (1)
year from the first to occur of (i) the date the product is sold by the manufacturer or (ii) the date the product is
purchased by the original retail customer (the “Commencement Date”). Except as expressly stated above, the
MANUFACTURER MA ES NO OTHER WARRANTY, EXPRESSED OR IMPLIED, WITH RESPECT TO THE
PRODUCTS AND EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, INCLUDING BUT NOT LIMITED
TO, WARRANTIES OF DESIGN, MERCHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
An authorized representative of the manufacturer must perform all warranty inspections. In the event of a
defect covered by the warranty, we shall, as our sole obligation and exclusive remedy, provide free replace-
ment parts to remedy the defective product. In addition, for products sold within the continental United States
or Canada, the manufacturer shall provide free labor to repair the products with the replacement parts, but
only for a period of ninety (90) days from the Commencement Date.
The warranty provided hereunder shall be null and void and without further force or effect if there is any (i)
repair made to the product by a party other than the manufacturer or its duly authorized service representa-
tive, (ii) misuse (including use inconsistent with written operating instructions for the product), mishandling,
contamination, overheating, modification or alteration of the product by any customer or third party or (iii) use
of replacement parts that are obtained from a party who is not an authorized dealer of Thermo Scientific prod-
ucts.
Heating elements, because of their susceptibility to overheating and contamination, must be returned to the
factory and if, upon inspection, it is concluded that failure is due to factors other than excessive high tempera-
ture or contamination, the manufacturer will provide warranty replacement. As a condition to the return of any
product, or any constituent part thereof, to the factory, it shall be sent prepaid and a prior written authorization
from the manufacturer assigning a Return Materials Number to the product or part shall be obtained.
IN NO EVENT SHALL THE MANUFACTURER BE LIABLE TO ANY PARTY FOR ANY DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OR FOR ANY DAMAGES RESULTING FROM
LOSS OF USE OR PROFITS, ANTICIPATED OR OTHERWISE, ARISING OUT OF OR IN CONNECTION
WITH THE SALE, USE OR PERFORMANCE OF ANY PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, TORT (INCLUDING NEGLIGENCE), ANY THEORY OF STRICT LIABILITY OR REGULATORY
ACTION.
For the name of the authorized Thermo Scientific product dealer nearest you or any additional information, contact us:
2555 erper Blvd., Dubuque, Iowa, 52004-0797
Phone: [phone] or 1-800-553-0039
Fax: [phone]
E-mail: [e-mail]
Web: www.thermo.com