Masterflex L/S 77240-20 User manual

OPERATING MANUAL:
MASTERFLEX®L/S®
COMPACT VARIABLE-
SPEED PUMPS
MASTERFLEX®L/S®77240-30
Model Nos.
77240-20
77240-30
®
®
A12991129B
Edition 03
(US & Canada only) Toll Free 1800MASTERFLEX • 18006373739
(Outside US & Canada) 18475497600 • 18473817050
www.masterflex.com • [email protected]
®

© 2019 Cole-Parmer Instrument Company. All rights reserved.
Masterflex – Reg TM Cole-Parmer Instrument Company.
IXEF 1022 – Reg TM Solvay S.A. Properties
ERTALYTE TX – Reg TM of the Quadrant Group
NORPRENE – Reg TM Saint-Gobain Performance Plastics Corp.
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 Console Drives Operating Manual

Masterflex MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual iii
DANGER: Remove power from the Pump System before any cleaning
operation is started.
WARNINGS: Turn drive off before removing or installing tubing. Fingers
or loose clothing could be caught in the rollers.
Stop the drive when changing the tubing or its position in the rotor
mechanism (the rotor is partially exposed when the LOADING LEVER is
in the open position).
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: 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 con-
nected 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. Consult the
factory for products suitable for these types of applications
NOTE: Use only MASTERFLEX precision tubing with MASTERFLEX pumps
to ensure optimum performance. Use of other tubing may void applicable
warranties.
Preface
Safety Precautions
SAFETY
PRECAUTIONS
Explanation of
Symbols
WARNING:
Product Use
Limitation

MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual vMasterflex
Table of Contents
Page
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
SETUP AND DRIVE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Tube Loading Single-Channel Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Tube Loading Dual-Channel Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Typical Flow, Pressure and Vacuum Data . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Motor/Brush Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Pump System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
WARRANTY, PRODUCT RETURN, and TECHNICAL ASSISTANCE . . .6-1
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Product Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Section 1
Section 2
Section 3
Section 5
Section 6
Section 4

Figures
Page
MASTERFLEX L/S Compact Variable-Speed Pumps . . . . . . . . . . . . . . . . . . . .1-1
Pump Drive – Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Pump – Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Open and Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Close Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Dual-Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Side View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual viiMasterflex
Figures

Tables
Page
MASTERFLEX L/S Pump Flowrate versus RPM . . . . . . . . . . . . . . . . . . . . . . .3-3
MASTERFLEX L/S Pump Flowrate versus Pressure . . . . . . . . . . . . . . . . . . . .3-3
MASTERFLEX L/S Pump Flowrate versus Suction . . . . . . . . . . . . . . . . . . . . .3-4
MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual ixMasterflex
Tables

Pump System
Figure 1-1. MASTERFLEX L/S Compact Variable-Speed Pump
MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual 1-1Masterflex
General Description
Section 1 Introduction
The MASTERFLEX® L/S® Compact Variable-Speed Pump is designed as
an inexpensive variable speed pump. These 200 rpm drives accommodate
one pump head for either one or two channels of tubing, depending on
the model purchased, (77240-20 - single-channel, 77240-30 - dual-
channel) at controlled speeds as low as 35 rpm.
The pre-installed Pump Head accepts several different tubing sizes for a
wide range of flow rates. The unique over-center cam design and spring
loaded tubing retention allows quick tubing changes and greatly reduced
maintenance time. All units are supplied with a Universal Power Supply
(Figure 1-1) which provides a DC output for connection to the Pump
Drive.
The single-turn adjustable Speed Control, see Figure 1-2, provides variable
flow operation. The green POWER On indicator lights whenever the
pump is operating. The Power On/Direction Switch turns power on when
either clockwise or counterclockwise pump rotor direction is selected. The
MAX Button is used for priming and purging and operates the pump at
maximum speed while depressed.
Universal Power Supply

1-2 MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual Masterflex
Section 1
Introduction
The rear panel, Figure 1-3, contains a DC power input jack for
connection of primary power and a 4-terminal barrier strip for connection
of remote start/stop and for a DC backup supply. Remote Start/Stop:
Terminals 3 and 4 on the rear panel terminal strip, (Figure 1-3) are used
for remote start/stop operation. Pump direction and speed are not
remotely controllable. In non-remote operation, these terminals are
connected together by a shorting bar. For remote control by switch
closure, remove the shorting bar and connect the two terminals of an
isolated remote control switch or relay to terminals 3 and 4. A closure of
the remote switch contacts will turn the pump system on. Opening the
contact will turn the pump system off.
General Description
(continued)
Figure 1-2. Pump System—Front Panel
Power On
Indicator
MAX: Press and hold to
prime or purge pump
Speed control: provides
variable flow adjustment
Power On/
direction switch
Figure 1-3. Pump Drive — Rear Panel
DC Power Input,
2.5 mm Coaxial Receptacle
Shorting Bar
Remote
Start/Stop
Input
Remote
DC
Input

WARNING: Turn drive off before removing or installing tubing. Fingers
or loose clothing could be caught in the rollers.
Tubing Accepted: Single-Channel Pump Head can be used with
MASTERFLEX precision tubing sizes L/S 13, L/S 14, L/S 16 & L/S 25 in
all formulations. For Dual-Channel Pump Head usage you may use L/S
13, L/S 14 & L/S 16 size tubing in all formulations.
NOTE: Use only MASTERFLEX precision tubing with MASTERFLEX pumps
to ensure optimum performance. Use of other tubing may void applicable
warranties.
MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual 1-3
Masterflex
Section 1
Introduction
General Description
(continued)

MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual 2-1Masterflex
Section 2 Setup and Operation
1. Unpack the drive system: save packaging material until proper product
operation has been verified.
2. Load tubing.
3. Connect the external power supply to the applicable input voltage
source and the output of the external power supply to the DC input
connector on the pump unit. (See Figure 1-3.)
NOTE: The power supply output connection is center positive (+).
4. Terminals 1 and 2 on the rear panel barrier terminal strip, provide a
means for connecting a remote DC power source. The positive (+)
terminal is terminal 1. The negative (–) terminal is terminal 2. (See
Figure 1-3.)
NOTE: Input voltage must not exceed 15V DC or equipment may be
damaged. A minimum of 11V DC is required for proper operation.
5. The drive system can be set to operate in either a clockwise or a
counterclockwise direction. The same control used to select direction
also turns power on or off. To operate in a clockwise direction place
direction control switch in the "up" position. The POWER indicator
should light and the fluid will flow from left to right. To operate in a
counterclockwise direction, place direction switch in the "down"
position. The POWER indicator should light and the fluid will flow
from right to left. To turn pump off, place switch in the "center"
position.
6. The pump speed is controlled by the variable speed control. Turning
the control clockwise increases the speed. Tubing life is decreased with
increased operating speed. Speed can be controlled up to a 6:1 range.

MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual 3-1Masterflex
Tube Loading
Single-Channel Pump
Tube Loading
Dual-Channel Pump
Section 3 Installation
1. Be sure pump drive is turned off.
2. Rotate the handle to the left (CCW) to open
pump.
3. Load tubing of the correct size. Center tubing
between retainers. (Figure 3-1)
4. With correct tubing loaded, check that tubing
is between retainer notches, rotate handle to
the right (CW) to close.
5. Pump Head will be fully closed when handle is
at the horizontal position against the cam stop.
(Figure 3-2)
6. Lightly pull tubing from both sides to remove
any excess tubing in the Pump Head and seat
tubing in retainers.
1. See above steps 1-2.
2. Load tubing of the correct size starting with
rear tube position. Center tubing between
retainers. (Figure 3-3)
3. With correct tubing loaded, check that tubing
is positioned with the retainer notches, rotate
handle to the right (CW) to close.
4. Pump Head will be fully closed when handle is
at the horizontal position against the cam stop.
(Figure 3-2)
5. Lightly pull tubing from both sides to remove
any excess tubing in the Pump Head and seat
tubing in retainers
Figure 3-1. Open and Load
Figure 3-2. Close Pump
Figure 3-3. Dual-Channel
Figure 3-4. Side View

3-2 MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual Masterflex
Section 3
Installation
WARNING: Stop the drive when changing the tubing or its position in
the rotor mechanism (the rotor is partially exposed when the LOADING
HANDLE is in the open position).
NOTES: For optimum tubing life, keep tubing straight where it enters and
exits.
Tubing retainers are spring loaded and do not need to be adjusted when
changing tubing of the same type and size.

MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual 3-3Masterflex
Section 3
Installation
NOTES: Flows shown are per channel. Dual-Channel Pump Head accepts
sizes L/S 13, L/S 14 & L/S 16 only. Size L/S 25 tubing, Single-Channel
only.
Performance values based on NORPRENE® Food tubing, pumping water
at 100 RPM. Actual results may differ between tubing formulations and
conditions.
Typical Flow,
Pressure and
Vacuum Data
Tabel 3-1. MASTERFLEX L/S Pump Flowrate versus RPM
Tabel 3-2. MASTERFLEX L/S Pump Flowrate versus Pressure
400
350
0
50
300
250
200
150
100
0 100 200 300
Size 25 (4.8mm)
Size 16 (3.2mm)
Size 14 (1.6mm)
Size 13 (0.8mm)
0
50
150
100
35
Size 25 (4.8mm)
Size 16 (3.2mm)
Size 14 (1.6mm)
Size 13 (0.8mm)
453025
20
150 40
RPM
Flowrate (mL/min)
Pressure (PSIG)
Flowrate (mL/min)

3-4 MASTERFLEX®L/S Compact Variable-Speed Pumps Operating Manual Masterflex
Section 3
Installation
Typical Flow,
Pressure and
Vacuum Data
(continued)
0
50
150
100
5
(-0.17)
Size 25 (4.8mm)
Size 16 (3.2mm)
Size 14 (1.6mm)
Size 13 (0.8mm)
010
(-0.34)
15
(-0.5)
20
(-0.68)
25
(-0.85)
30
(-1.05)
Suction In. Hg (-BAR)
Flowrate (mL/min)
Tabel 3-3. MASTERFLEX L/S Pump Flowrate versus Suction
NOTES: Flows shown are per channel. Dual-Channel Pump Head accepts
sizes L/S 13, L/S 14 & L/S 16 only. Size L/S 25 tubing, Single-Channel
only.
Performance values based on NORPRENE® Food tubing, pumping water
at 100 RPM. Actual results may differ between tubing formulations and
conditions.