Masterflex L/S MFLX07528-40 User manual

OPERATING MANUAL:
L/S® PRECISION
VARIABLE SPEED
DRIVES
Model Nos.
MFLX07528-40
MFLX07528-45
MFLX07528-50
MFLX07528-55
®
®
A12997343
Edition 03
(US & Canada only) Toll Free 1800MASTERFLEX • 18006373739
(Outside US & Canada) 18473817050
masterflex.tech @ avantorsciences.com | www.avantorsciences.com/masterflex
®
MASTERFLEX® L/S® MFLX07528-40, shown with MFLX07200-30

© 2023 Masterflex LLC. All rights reserved.
Masterflex – Reg TM Masterflex LLC.
Trademarks bearing the ®symbol in this publication are registered in the U.S. and in other countries.
PUMP FOR LIQUIDS
ORIGINAL INSTRUCTIONS
Masterflexii L/S Precision Variable-Speed Drives Operating Manual

DANGER: Remove power from the pump before any
cleaning operation is started.
WARNINGS: Remove power from the pump before attempting
any maintenance.
A contactor or other device that routinely disconnects and
reapplies the AC line to the drive to start and stop the motor
can cause drive hardware damage. The drive is designed to
use control input signals that will start and stop the motor.
WARNINGS: Tubing breakage may result in fluid being sprayed
from pump. Use appropriate measures to protect operator and
equipment.
Turn Pump System off before removing or installing tubing.
Fingers or loose clothing could get caught in drive mechanism.
Pump Heads not equipped with OHS (open head sensor) will not
actuate the OHS feature. If Non-OHS Pump Heads are used, the
shorting plug must be installed and locked into the OHS socket
on the front of the drive for drive to operate.
CAUTIONS: When changing flow direction, allow the pump to
come to a complete stop before starting again. Failure to do so
could cause permanent damage to the motor.
Replace the fuse only with one of the same type and rating. The
fuse rating and type are stated on the rear panel.
Do not contaminate the lubricant in the container, on the shaft or
on the seal with foreign material.
Failure to observe this precaution may result in damage to the-
seal and premature failure of the seal.
No foreign matter should be allowed under the gasketon the back
of the front plate or under the heads of the screws.
Failure to observe this precaution may result in leakage during-
washdown of the drive.
CAUTION: To avoid electrical shock, the power cord
protective grounding conductor must be connected to ground.
Not for operation in wet locations as defined by EN61010-1.
If the product is not used in a manner specified in the
instructions, the protection provided by the equipment may
be impaired.
Masterflex
Preface
Safety Precautions
SAFETY
PRECAUTIONS
L/S Precision Variable-Speed Drives Operating Manual iii

Masterflex
CAUTION: Risk of Danger. Consult Operator’s manual for nature
of hazard and corrective actions.
CAUTION: Risk of crushing. Keep fingers away from rotor while
pump is in operation. Stop pump before loading or unloading
tubing.
CAUTION: Hot Surface. Do not touch.
CAUTION: Risk of electric shock. Consult Operator’s manual for
nature of hazard and corrective actions.
This product is not designed for, nor intended for use in patient
connected applications; including, but not limited to, medical and
dental use, and accordingly has not been submitted for FDA
approval.
This product is not designed for, nor intended for use in
hazardous duty areas as defined by ATEX or the NEC
(National Electrical Code); including, but not limited to use with
flammable liquids.
iv L/S Precision Variable-Speed Drives Operating Manual
Preface
WARNING:
Product Use
Explanation of
Symbols

Masterflex L/S Precision Variable-Speed Drives Operating Manual v
Preface
1. Read instructions before operating the unit.
2. Observe safety precautions at all times, especially when pumping
dangerous liquids.
3. If the pump runs unusually noisy or if bunching of the tubing in the
pump can be observed, make sure the tubing is clamped down tightly
and/or replace it with a new piece of tubing.
4. The L/S Precision Variable-Speed Drives must be well-grounded at all
times.
5. The L/S Precision Variable-Speed Drives are equipped with a current-
limiting circuit that will shut the motor down if any of the following
conditions exist:
a. Tubing that is too hard is loaded in the pump.
b. Incorrect tubing size or wall thickness is loaded in the pump.
c. Tubing is improperly loaded into the Pump Head.
6. The unit is fused and grounded to protect the operator in the event of
short circuits that could be caused by liquid entering the case.
CAUTION: Replace the fuse only with one of the same type and
rating. The fuse rating and type are stated on the
rear panel.
7. The L/S Precision Variable-Speed Drives should not be used in
outdoor or hazardous locations.
8. The L/S Precision Variable-Speed Drives Equipped with OHS
(Open Head Sensor) must use OHS equipped Pump Head.
If Non-OHS equipped Pump Head is used, the shorting plug must be
installed in OHS socket and locked for the drive to operate properly.
Safety

L/S Precision Variable-Speed Drives Operating Manual viiMasterflex
Table of Contents
Page
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Application Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Controls, Indicators and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
INSTALLATION AND SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Before Starting Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Mounting the Pump Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Inserting Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Tubing Inspection and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Pump Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Keypad Lockout Enable/Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
External Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
External Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Motor Gear and Brush Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Shaft Seal Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Section 1
Section 2
Section 3
Section 6
Section 7
Section 4
Section 5

Page
WARRANTY, PRODUCT RETURN and TECHNICAL ASSISTANCE . . .8-1
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Product Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Table of Contents
Masterflexviii L/S Precision Variable-Speed Drives Operating Manual
Section 8
Table of Contents
(continued)

Figures
Page
Controls, Indicators and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
18-Pin Connector Configuration with Wiring Scheme . . . . . . . . . . . . . . . . . .3-2
Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Motor Gear and Brush Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Shaft Seal Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
L/S Precision Variable-Speed Drives Operating Manual ixMasterflex
Figures

L/S Precision Variable-Speed Drives Operating Manual 1-1Masterflex
Section 1 Introduction
The L/S Precision Variable-Speed Drives control the speed of
MASTERFLEX® Pump Heads to provide flow rates from 0.06 to 3400 mL/min.
The 600 rpm L/S Precision Variable-Speed drives can mount one
(1) MASTERFLEX Pump Head with OHS (open head sensor).
See Installation and Setup for information on Multi-channel operation.
The 100 rpm L/S Precision Variable-Speed drives can mount one
(1) MASTERFLEX Pump Head with OHS (open head sensor).
See Installation and Setup for information on Multi-channel operation.
Advantages of Peristaltic Pumps:
• Handle abrasive slurries and corrosive fluids with minimal wear. Ideal
for titanium dioxide or diatomaceous earth filter aid applications.
• Low maintenance; sealless and valveless design.
• Valveless design prevents clogging.
• Inner surfaces are smooth and easy to clean.
• Contamination free; fluid contacts only the tubing or tube material.
• Suction lift and priming up to 8.8m water column at sea level.
• Low shearing for handling the most shear sensitive of fluids such as
latex or fire fighting foam.
• Capable of running dry and pumping fluids with high quantities of
entrained air, such as black liquor soap.
• High volumetric efficiency allows operation in metering or dosing
applications where high accuracy is required.
• Handles extremely viscous fluids.
• Availability of tubing and tube materials that are suitable for food and
pharmaceutical use.
General Description
Application Solutions

1-2 L/S Precision Variable-Speed Drives Operating Manual Masterflex
Section 1
Introduction
Controls, Indicators
and Connectors
Figure 1-1. Controls, Indicators and Connectors
A
BE
CD
A. POWER (ON/OFF) SWITCH: Turns the unit ON or OFF.
B. SPEED KEYS: Sets the speed of the pump. The higher the number, the
faster the speed of the pump. When the speed key is depressed the
smallest speed units change first followed by an increasing rate of change.
C. FLOW DIRECTION KEY: Sets the direction of pump rotation
Clockwise/Counterclockwise. An LED annunciator indicates the
active direction. The motor is brought to a controlled stop before
reversing direction.
D. INTERNAL/EXTERNAL KEY: Changes the drive operation mode.
Internal (Local) operation from the front panel keypad is designated
by INT, external (Remote) operation is designated by EXT. In INT
mode, START/STOP, FLOW DIRECTION, and SPEED keys on the
front panel determine operating state. Depression and release of keys
enables toggling between the two operating states.
E. START/STOP KEY: Upon depression, key toggles the motor
ON/OFF during INT mode. This key will not start the drive if in
EXT mode. If pressed while operating in EXT mode (stop desired),
the button will always stop the drive and a toggle of the EXT
Start/Stop is required to restart the drive.
F. EXTERNAL/REMOTE CONNECTOR: Utilized to connect wiring
for remote control operation with a 18-Pin Round connector.
G. IEC Power Entry Module/Line Cord: Utilized to connect line cord to
drive. See page 4-1 for alternative cords.
H. OHS (Open Head Sensor) Socket: For use with OHS equipped
MASTERFLEX Pump Heads.
G
H
F

L/S Precision Variable-Speed Drives Operating Manual 2-1Masterflex
Section 2 Installation and Setup
• The drive should be mounted on a flat horizontal surface. Up to a
maximum of one (1) Pump Head can be used for 100 rpm and 600
rpm drives equipped with OHS (open head sensor).
• Multi-Channel operation will accommodate only one (1) Pump Head
with OHS (open head sensor), all other Pump Heads must be Non-
OHS.
WARNING: Pump Heads NOT equipped with OHS (open head
sensor) will not actuate the OHS feature. If Non-OHS Pump Heads
are used, the shorting plug must be installed and locked into the
OHS socket on the front of the drive for drive to operate.
• The ambient air temperature should not exceed 104° F (40° C) and
adequate air flow should be provided for.
• The drives are provided with a grounded plug. If used in a GFCI
protected circuit, nuisance tripping may occur.
• Tubing should be clean and routed so that bend radii are at a
minimum four (4) times the tube diameter and as short as possible.
WARNING: Turn drive off before removing or installing tubing.
Fingers or loose clothing could get caught in drive mechanism.
• Use a tube size of appropriate diameter for the flow rate and
viscosity required.
• For tubing selection and compatibility, see Tubing Selection Guide
within this flash drive or on the web.
• For Pump Head information, see OHS (open head sensor) Pump Head
datasheets within this flash drive or on the web.
• Before cleaning or conducting maintenance on unit remove power
from the drive.
DANGER: High voltages exist and are accessible. Use extreme
caution when servicing internal components.
Before Starting Drive

Mount Pump Head and load tubing (See Pump Head datasheets within
this flash drive or on the web). Check to ensure that rollers are clean and
free of defects.
• Ensure that OHS (open head sensor) cable is plugged in and locked.
2-2 L/S Precision Variable-Speed Drives Operating Manual Masterflex
Section 2
Installation and Setup
Mounting the
Pump Head

L/S Precision Variable-Speed Drives Operating Manual 3-1Masterflex
Inserting Tubing
Section 3 Operation
WARNINGS: Tubing breakage may result in fluid being sprayed
from pump. Use appropriate measures to protect operator and
equipment.
Turn Pump System off before removing or installing tubing.
Fingers or loose clothing could be caught in the pump
mechanism.
CAUTION: To avoid electrical shock, the power cord protective
grounding conductor must be connected to ground. Not for oper-
ation in wet locations as defined by EN61010-1.
If the product is not used in a manner specified in the
instructions, the protection provided by the equipment
may be impaired.
Tubing should be inspected periodically for tears, cracks, cut marks,
abrasions, inability to hold pressure, bubbles in the flow stream and
reduction or loss of flow.
Tubing life may be extended by periodically moving the worn tubing
inside the occlusion bed of the pump to the outside of the occlusion bed
to the suction side of the pump. This will avoid excessive tubing wear at
any specific point.
Always move the worn tubing to the suction side of the pump.
CAUTION: When changing flow direction, allow the pump to
come to a complete stop before starting again. Failure to do so
could cause permanent damage to the motor.
1. Make sure the speed is set to the minimum setting.
2. Turn the power switch ON. Increase the speed to start the pump
action. The higher the rpm setting, the faster the speed of the pump.
3. The L/S Precision Variable-Speed Drives are self-priming. To begin
pumping, select a flow direction with the flow direction button, insert
the intake and output tubing into a reservoir, and turn the unit ON.
Prime the tubing for at least 5 minutes. If accurate flow control is
important, allow the pump to prime for approximately 20 minutes for
more stable flow conditions.
Tubing Inspection
and Replacement
Pump Controls

3-2 L/S Precision Variable-Speed Drives Operating Manual Masterflex
Section 3
Operation
External Operation Bench top models are equipped with inputs that can be controlled by
external signals connected at the rear panel 18-pin round connector. The
external inputs permit control of the pump by remote equipment or
accessories. Figure 3-1 indicates the signal locations in the connector.
Figure 3-1. 18-Pin Connector Configuration with Wiring Scheme
Description Pin No.
Speed Control Voltage Input (0–10V) (+) input 1 (black)
Speed Control Current Input (4–20 mA) (+) input 3 (white)
Speed Control Input Reference Common 5 (orange)
Local/Remote Speed Control 14 (red/yellow)
Local/Remote Speed Control Reference 10 (grey)
Start/Stop and CW/CCW Reference 8 (yellow)
Start/Stop (+) Control 4 (green)
CW/CCW 6 (blue)
Chassis (Earth) Ground 9 (violet)
NOTE: Colors are those of the Remote Cable, Cat. number MN-77300-32.
12
3456
78910
12 13 14 15
16 17 18
11
Keypad Lockout
Enable/Disable
Press and hold the INT/EXT key. After five (5) seconds, display will
change to all dashes. Release INT/EXT key and press UP ARROW key (▲)
five (5) times. Repeat this process to unlock the keypad. When the keypad
is locked out, display will change to display all dashes (- - - - -) when a key
is depressed.
Note: Jumpers “A” and “B” are optional. See page 3-3 External Inputs for
correct usage.

L/S Precision Variable-Speed Drives Operating Manual 3-3Masterflex
Section 3
Operation
The front INT/EXT key enables external functions. Switching to INT on
the display disables the external functions, allowing the front panel
controls to operate the pump.
When the INT/EXT key is in the EXT position, starting and stopping the
pump is controlled by an external contact closure between pins 4 and 8
(Jumper B), and the pump speed is determined by an externally supplied
0–10V or 4–20 mA source. Connection must be made between pins 4 and
8 to Start/Stop the drive and a control voltage greater than 0V between
pins 1 and 5 or a control current greater than 4 mA between pins 3 and 5
must be applied for the pump to run.
If setting the speed from the front panel is desired with external Start/Stop
contact operation, the INT/EXT key must again be in the EXT position.
In addition, Jumper A should be in place. Jumper A connects pin 14
(Local/Remote) to pin 10 (Local/Remote Reference). Start/Stop will then
be controlled from the rear panel (Jumper B), and the pump speed will be
controlled from the front panel.
NOTE: The signal common for the speed control voltage and current
inputs is not referenced to earth ground.
The START/STOP, CW/CCW and Local/Remote are digital inputs. They
are internally pulled up to +5 V with respect to earth ground via pins 8
and 10. They can alternately be driven with open collector logic. For
increased noise immunity, use of contact closures is recommended
WARNING: A contactor or other device that routinely
disconnects and reapplies the AC line to the drive to start and
stop the motor can cause drive hardware damage. The drive is
designed to use control input signals that will start and stop the
motor.
External Inputs

L/S Precision Variable-Speed Drives Operating Manual 4-1Masterflex
Section 4 Maintenance
Replacement Parts
WARNING: Remove power from the pump before attempting any
maintenance.
Description Part Number
Brushes (set of 2) 07520-04
Brush Cap Holder 07520-03
Fuse-T3.15A, 5 x 20 mm 77500-25
Gear Service Kit (600) 07553-06
Gear Only (600 rpm) 07553-09
Gear Service Kit (100 rpm) 07553-08
Ferrite, Line Cord Snap-on, (CE Required) B-3689-CR
Line Cord, Australia 50001-60
Line Cord, Denmark 50001-62
Line Cord, India 50001-64
Line Cord (115V), United States 50001-68
Line Cord, Israel 50001-69
Line Cord, Europe 50001-70
Line Cord, England 50001-72
Line Cord, Switzerland 50001-74
Line Cord, Italy 50001-76
Line Cord (230V), United States 50001-78
Line Cord, China 50001-79
Replacement seal kit (NEMA) 07575-01
Replacement gear and shaft kit (NEMA) 07575-02
Replacement sensor shorting plug 07528-82

4-2 L/S Precision Variable-Speed Drives Operating Manual Masterflex
Section 4
Maintenance
Fuse Replacement
Item Description
A I/O Receptacle 18-pin Round
B IEC Power Entry Module / Line Cord
C T3.15A (5 × 20 mm) Fuse - Do Not Substitute
D Power Switch - All settings are retained in memory
1. Place the power switch in the off position.
2. Disconnect the AC power input line cord from the receptacle.
3. Remove and check the fuse and replace if defective.
Figure 4-1. Fuse Replacement
A
BD
C