Jasco PU-1580 User manual

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P/N: 0302-0375B
MODEL PU-1580
Intelligent HPLC Pump
Operation Manual

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i
Safety Considerations
To ensure operation safety, this instrument must be operated correctly and
maintained regularly according to schedule. Carefully read to fully understand all
safety precautions in this manual before operating the instrument. This manual
denotes precautions against actions that can result in hazardous situations or
equipment damage by using the signal words WARNING, CAUTION, and Note.
(1) Safety symbols
Instruction manual symbol. If the product is marked with this symbol,
refer to the instrument manuals to protect the instrument against
damage.
WARNING A WARNING indicates an potentially hazardous situation which, if not
avoided, could result in death or serious injury
.
CAUTION A CAUTION indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also be used
to alert against unsafe practices.
Do not proceed beyond a WARNING or CAUTION notice until you
understand the hazardous conditions and have taken the appropriate
steps.
Note A Note provides additional information to aid the operator in obtaining
optimal instrument performance.
Pressurized, hazardous solvents are used in high-performance liquid
chromatography. Always follow the proper laboratory procedures to ensure operator
safety. Always wear goggles, gloves and protective clothing when operating the
instrument, especially when injecting sample and opening valves.

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ii
(2) Warning Labels
Warning labels are attached at several locations on this instrument. Do not remove,
deface or damage the warning labels. If a warning label peels off the instrument or
becomes illegible, contact your local JASCO distributor (see list on the back cover of
this manual) for a replacement label. Be sure to indicate the part number (P/N) on
the label.
(1) Fuse Warning Label (P/N: 0822-0120A)
Fuse ratings are contained in the maintenance manual.
(2) Electrical Shock Warning Label (P/N: 0822-0125A)
Electrical shock may occur if the instrument is not
properly grounded.
Figure 1 Rear Panel
ONLY WITH FUSE OF THE SPECIFIED
AGAINST RISK OF FIRE, REPLACE
FOR CONTINUED PROTECTION
TYPE AND CURRENT RATINGS.
WARNING
WARNING
MAINS PLUG GROUND PIN
OR GROUND TERMINAL
MUST BE CONNECTED
TO GROUND.
FUSE
PUSH
FUSE
PUSH
T1.6A
T2.5A
100‑120V
220‑240V
FUSE
1
2
3
4
5
6
7
PRESS.ZERO
ADJ.
EVENT
VALVE
GRAD.
LOWPRESS.
8
ACINPUT
GND
FUSE
RS‑232C
R
R
(2) Electrical shock
warning label
(1) Fuse warning label
ONLY WITH FUSE OF THE SPECIFIED
AGAINST RISK OF FIRE, REPLACE
FOR CONTINUED PROTECTION
TYPE AND CURRENT RATINGS.
WARNING

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iii
Limited Warranty
Products sold by JASCO, unless otherwise specified, are warranted for a period of
one year from the date of shipment to be free of defects in materials and
workmanship. If any defects in the product are found during this warranty period,
JASCO will repair or replace the defective part(s) or product free of charge.
THIS WARRANTY DOES NOT APPLY TO DEFECTS RESULTING FROM THE
FOLLOWING:
1) IMPROPER OR INADEQUATE INSTALLATION
2) IMPROPER OR INADEQUATE OPERATION, MAINTENANCE, ADJUSTMENT
OR CALIBRATION
3) UNAUTHORIZED MODIFICATION OR MISUSE
4) USE OF CONSUMABLE PARTS NOT SUPPLIED BY AN AUTHORIZED
JASCO DISTRIBUTOR
5) CORROSION DUE TO THE USE OF IMPROPER SOLVENTS, SAMPLES, OR
DUE TO SURROUNDING GASES
6) ACCIDENTS BEYOND JASCO’S CONTROL, INCLUDING NATURAL
DISASTERS
This warranty does not cover the consumable parts listed below:
1) Deuterium lamp, tungsten lamp, xenon lamp and other light sources
2) Mirrors in the light source section, and cell windows
3) Fuses, batteries, glassware, chart paper and ink
4) Plunger seals, needle seals, cell window gaskets, valve seals, disk seals and
other seal materials
5) Tubing and fittings (e.g., ferrules, compression screws), and filters (e.g., inlet
filters, line filters, other solvent filters)
6) Pre-columns and guard columns
THE WARRANTY FOR ALL PARTS SUPPLIED AND REPAIRS PROVIDED
UNDER THIS WARRANTY EXPIRES ON THE WARRANTY EXPIRATION DATE
OF THE ORIGINAL PRODUCT. FOR INQUIRIES CONCERNING REPAIR
SERVICE, CONTACT YOUR JASCO DISTRIBUTOR AFTER CONFIRMING THE
MODEL NAME AND SERIAL NUMBER OF YOUR INSTRUMENT.

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iv
Regulatory Statements
CE Notice:
The symbol indicates that this JASCO system complies with the EMC
(Electromagnetic Compatibility) and Low Voltage Directives of the European
Community. Furthermore, this symbol indicates that this JASCO system meets the
relevant basic safety and health requirements of the EC Directive based on the
following technical standards:
•EN55011---- “Limits and Methods of Measurement of Radio Interference
Characteristics of Information Technology Equipment.” ----
Group 1, Class A.
WARNING: This is a Class A product. In a domestic environment this product may
cause radio interference, in which case the user may be required to
take adequate measures.
•EN50082-1---- “Electromagnetic compatibility”----Generic immunity standard
Part 1: Residential, commercial, and light industry.
•IEC1000-4-2---- “Electromagnetic compatibility for industrial-process
measurement and control equipment Part 2: Electrostatic
discharge requirements.”----Severity level 3.
•IEC1000-4-3---- “Electromagnetic compatibility for industrial-process
measurement and control equipment Part 3: Radiated
electromagnetic field requirements.”----Severity level 2.
•IEC1000-4-4---- “Electromagnetic compatibility for industrial-process
measurement and control equipment Part 4: Electrical fast
transient/burst requirements.”----Severity level 2.
•IEC1010-1---- 1990 + Amd.1:1992 + Amd.2: 1995----Safety requirements for
electrical equipment for measurement, control and laboratory
use.
•A “Declaration of Conformity” in accordance with the above standards has been
made and is on file at JASCO EUROPE srl, Via Confalonieri 25, 22060
CREMELLA (Lc), Italy.

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v
Preface
This operations manual serves as your guide book for using this instrument. It is
intended to instruct first-time users on how to properly use the instrument, and to
serve as a reference for experienced users.
Before using the instrument, please read this operations manual carefully, and make
sure that the contents are fully understood. This manual should be easily accessible to
the operator at all times during instrument operation. When not using the instrument,
keep this manual stored in a safe place. Should this operations manual be lost, order a
replacement from your local JASCO distributor.
Installation Conditions
To ensure operation safety, observe the following conditions:
(1) Do not operate the instrument under voltage fluctuations exceeding 10% of
the recommended line voltage. Otherwise, the instrument may not function
properly.
(2) Use a three-pronged electrical outlet with a ground.
(3) Operate the instrument under a temperature range of 10°∼35°C.
(4) Operate the instrument under a humidity range of 35% ∼85% (RH). If ambient
humidity exceeds 85% (RH), water vapor may deteriorate optical components.
(5) Operate the instrument under an atmospheric pressure of 750 ∼1060 hPa.
(6) Avoid strong magnetic fields and sources of high frequency. The instrument
may not function properly when near a strong magnetic field or high frequency
source.
(7) Avoid vibration from vacuum pumps, electric motors, processing equipment
and machine tools.
(8) Avoid dust and corrosive gas. Do not install the instrument in a location where
it may be exposed to dust, especially in locations exposed to outside air or
ventilation outlets that discharge dust particles.
(9) Do not install the instrument in a location where it may be exposed to direct
sunlight.
(10) Ensure that no air conditioner blows air directly onto the instrument. This may
inhibit stable measurement.
Note: The above conditions do not ensure optimal performance of this instrument.

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vi
Maintenance
Contact your local JASCO distributor for instrument maintenance. In addition,
contact a JASCO distributor before moving the instrument to another location.
Consumable parts should be ordered according to part number from your local
JASCO distributor. If a part number is unknown, give your JASCO distributor the
model name and serial number of your instrument.
Do not return contaminated products or parts that may constitute a health
hazard to JASCO employees.
Notices
(1) JASCO SHALL NOT BE HELD LIABLE, EITHER DIRECTLY OR INDIRECTLY,
FOR ANY CONSEQUENTIAL DAMAGE INCURRED AS A RESULT OF
PRODUCT USE.
(2) PROHIBITIONS ON THE USE OF JASCO SOFTWARE:
z COPYING SOFTWARE FOR PURPOSES OTHER THAN BACKUP
z TRANSFER OR LICENSING TO A THIRD PARTY THE RIGHT TO USE
SOFTWARE
z DISCLOSURE OF CONFIDENTIAL INFORMATION REGARDING
SOFTWARE
z MODIFICATION OF SOFTWARE
z USE OF SOFTWARE ON MULTIPLE WORKSTATIONS, NETWORK
TERMINALS, OR BY OTHER METHODS (NOT APPLICABLE UNDER A
NETWORK LICENSING AGREEMENT CONCLUDED WITH JASCO)
(3) THE CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT
NOTICE.
(4) THIS INSTRUCTION MANUAL IS CONSIDERED TO BE COMPLETE AND
ACCURATE AT PUBLICATION.

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vii
TABLE OF CONTENTS
Safety Considerations.............................................................................. i
Limited Warranty.....................................................................................iii
Regulatory Statements ...........................................................................iv
Preface ....................................................................................................v
Maintenance ...........................................................................................vi
TABLE OF CONTENTS.........................................................................vii
1. Product Description and Specifications............................................ 1
1.1. Product Description ......................................................................................... 1
1.2. Specifications .................................................................................................. 1
2. Part Names and Descriptions .......................................................... 4
2.1. Front Panel ...................................................................................................... 4
2.2. Operation Panel............................................................................................... 5
2.3. Rear Panel....................................................................................................... 6
2.4. Right Side Panel..............................................................................................8
2.5. Bottom Panel ................................................................................................... 9
3. Power-ON and Power-OFF............................................................ 10
3.1. Power-ON and Diagnostic Test ..................................................................... 10
3.2. Power-OFF .................................................................................................... 11
4. Operations in Normal Operation Mode........................................... 12
4.1. Switching Between Constant Flow Mode and Constant Pressure Mode ....... 12
4.2. Constant Flow Mode...................................................................................... 12
4.2.1. Changing the parameters ......................................................................... 12
4.2.2. Constant flow rate start and stop..............................................................14
4.2.3. Error messages during pumping .............................................................. 15
4.3. Constant Pressure Mode ............................................................................... 15
4.3.1. Changing the parameters ......................................................................... 15
4.3.2. Constant pressure start and stop ............................................................. 16
5. Operations in Program Mode......................................................... 17
5.1. Description..................................................................................................... 17
5.2. Setting the File Number (Loading Files) ........................................................ 18
5.3. Switching Between Normal Operation Mode and Program Mode.................. 18
5.4. Gradient mode confirmation .......................................................................... 19
5.5. Editing a Program in High-pressure Gradient Mode ......................................20
5.5.1. Editing the initial conditions ...................................................................... 20
5.5.2. Editing time programs .............................................................................. 21
5.5.3. Example of a high-pressure gradient program ......................................... 25
5.6. Low-pressure gradient mode ......................................................................... 26
5.6.1. Editing the initial conditions ...................................................................... 26

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viii
5.6.2. Editing time programs .............................................................................. 28
5.6.3. Example of a low-pressure gradient program........................................... 31
5.7. High- or low-pressure gradient operations..................................................... 32
5.7.1. High- or low-pressure gradient program execution................................... 32
5.7.2. Parameter changes while the gradient program is running ......................33
5.7.3. Operation in conjunction with an Autosampler ......................................... 34
6. Special Operations .......................................................... .................36
6.1. Timer functions ......................................................................................... .... 36
6.1.1. OFF timer setting ([SHIFT][1]) ............................................................. .... 36
6.1.2. ON timer setting ([SHIFT][2])............................................................... .... 37
6.2. Flow rate correction ([SHIFT][3])............................................................... ....38
6.3. Setting pump numbers ([SHIFT][4]).......................................................... .... 38
6.4. Switching between high- and low-pressure gradient modes ([SHIFT][6]) .... 39
6.5. Pressure sensor signal ([SHIFT][6]).......................................................... .... 40
6.6. Adjustment of LPG COMP [SHIFT][7]....................................................... ....41
6.6.1. Setting LPG COMP ............................................................................. .... 41
6.6.2. Procedure for recalibrating the LPG COMP value.............................. ..... 41
6.7. Using the Optional Semi-Micro Kit ([SHIFT][.]) ......................................... .... 42
6.8. Registering Serial Numbers...................................................................... .... 42

1
1. Product Description and Specifications
1.1. Product Description
The Model PU-1580 Intelligent Pump is a high performance, high functionality pump for
HPLC. The pump provides extremely consistent solvent delivery via SSQD (Slow Suction
Quick Delivery).
The pump may be operated in normal operation mode or program mode. Normal
operation mode offers a constant flow rate or pressure. In program mode, selection of
composition, flow rate, solvent selection valves, and event relays can be performed
according to a user-defined time program.
For gradient pumping, both high-pressure (mixing) and low-pressure (mixing) methods are
available. The appropriate method depends on the system being used.
(1) High-pressure (mixing) gradient (HPG)
•For systems having two pumps and one mixer, 2-solvent high-pressure gradients
can be created.
•For systems having three pumps, one mixer, and HPLC instrument control software
(HSS), 3-solvent high-pressure gradients can be created.
(2) Low-pressure (mixing) gradient (LPG)
•For systems having one pump and one low-pressure gradient unit, 3-solvent low-
pressure gradients can be created.
•For systems having HPLC instrument control software (HSS), gradient pumping is
performed using the HSS. For systems that do not include HSS, gradient pumping
is performed using the time program functions of the pumps.
Other functions include
•Automatic pump shut-off
•Maintenance functions: self-diagnostic functions, flow rate and back pressure
correction, plunger washing, etc.
1.2. Specifications
Pumping method: SSQD (Slow Suction Quick Delivery) method
Pumping mode: Fixed flow rate/fixed pressure
(can be selected using a control key)
For constant flow rate analysis:
Flow rate setting range: 0.001 ~ 10 ml/min
Flow rate setting step: 0.001 ml/min

2
Flow rate accuracy: Setting value±2% or Setting value±2 µl/min, whichever is
larger. (A flow rate range of 0.05 ~ 5.0 ml/min and a
pressure of 35 MPa are assumed.)
Flow rate precision: RSD (Relative Standard Deviation) of 0.1% or less (0.2 ~ 5
ml/min)
Maximum pressure: 50 MPa (to 5 ml/min)
35 MPa (over 5 ml/min)
Pressure limits: 0 ~ 50 MPa (0.1-MPa increments)
For constant-pressure analysis:
Pressure control range: 30 ~ 50 MPa (for a maximum flow rate of up to 5 ml/min)
30 ~ 35 MPa (for a maximum flow rate of over 5 ml/min)
Pressure settings: 0.1-MPa steps
Pressure accuracy: Setting value ±10% or ±1 MPa, whichever is larger
(assumes average value for a fixed load)
Program functions:
Time program: Programming of flow rate, composition ratio, maximum
pressure, minimum pressure, event relay signals (three
circuits), and solvent switching (64 steps, 10 files) is possible
High pressure gradient: 2-solvent high-pressure (mixing) method using two PU-1580
units
Low pressure gradient: 3-solvent low pressure (mixing) method using a low-pressure
gradient unit (LG-1580-02)
Composition ratio setting: 0 ~ 100%, 0.1% increments
Solvent switching: Switching among six solvents using a solvent selection valve
(LV-980-03)
Timer: ON/OFF timer, maximum setting: 99.9 hours (0.1-hour
increments)
Operation display, etc.:
Flow rate display: Digital, LCD
Pressure display: Digital, LCD
External control functions:
Event relay input: Pumping start, pumping stop, and program start
Specialized control input and output: LC-Net®
General control input and output: RS-232C (Optional)
Control from HPLC instrument control program (HSS):
Number of pumps controllable: three pumps
Control modes: Nine modes ranging from single-pump, fixed composition
pumping to 3-pump, 3-solvent high pressure (mixing)
gradient pumping
Flow rate setting range: 0.01 ~ 10 ml/min

3
Composition ratio setting range: 0 ~ 100%
Diagnostic functions:
Items checked: Memory (ROM, RAM), pressure sensors, DC power, memory
backup
Maintenance program: Flow rate correction function, pressure sensor inspection
functions
Operating temperature range: 10 ~ 40°C
Additional specifications:
Wetted materials: Sapphire, ceramics, stainless steel (SUS 316), fluoride resin,
PEEK
Pressure sensors: Flow-through strain gauge transducer
Additional equipment: Manual 2-solvent selection valve
Optional equipment: Semi-micro pumping kit (plunger diameter: 2 mm)
Dimensions: 150 W x 464 D x 150 H mm
Approximate weight: 10 kg
Rated power: 100〜240V±10%, 50/60Hz, 185 VA

4
2. Part Names and Descriptions
2.1. Front Panel
MODE FLOW TIMER
PRESS P.MAX P.MIN
ml/min
MPa
9
8
7
65
4
32
1
0
CLEAR
EDIT/ENTER
COMP FLOW EVENT
VALVE P.MAX P.MIN
SHIFT VALVE PRGM
CF/CP
MONIT PUMP
PRGM
RUN
POWER
PU-1580
LCD Panel Control Keys
Editing Keys
Pump Head
Drain Tube
Power Switch Washing Solvent Outlet Washing Solvent Inlet
Outlet Port(with filter)
Purge Valve
Figure 2.1 Front Panel
Part Function
LCD Panel Displays operation status, parameter settings, and various
messages.
Control Keys Used to control pump operations, including pumping start/stop
and time program start/stop.
Editing Keys Used to select parameters, input values, and create time
programs.
Power Switch Used to turn on and off power to the unit.
Washing
Solvent Inlet
and Outlet
Port through which plunger washing solvent is drawn in and
subsequently discharged.
Drain Tube Solvent elutes from the drain tube when the purge valve is
turned in the counterclockwise direction
Pump Head When facing the instrument, the left pump head is the delivery
head, which has inlet and outlet check valves for solvent
delivery, and the right pump head is the modifier head, which
smoothes pulsating solvent flow.
Outlet Port Port containing a line filter though which solvent is delivered.

5
2.2. Operation Panel
MODE FLOW TIMER
PRESS P.MAX P.MIN
ml/min
kg/cm
2
9
8
7
65
4
32
1
0
CLEAR
EDIT/ENTER
COMP FLOW EVENT
VALVE P.MAX P.MIN
SHIFT VALVE PRGM
CF/CP
MONIT PUMP
PRGM
RUN
Figure 2.2 Operation Panel
Key Function
[PUMP] Used to start/stop solvent delivery. The pilot lamp is lit when
the pump is on.
[PRGM RUN] Used to start and reset time programs (reset to initial
conditions). The pilot lamp is lit when the program is running
and blinks when the pump is operating or the program
remains under initial conditions.
[CF/CP] Used to switch the delivery mode between constant flow and
constant pressure.
[MONIT] Used to return the screen to the monitor display, which
indicates the instrument operating status.
[PRGM] Used to switch between normal operation mode and time
program mode.
[VALVE] Used to set the solvent selection unit and event relay output.
[SHIFT] Used in conjunction with other keys to access parameters
that are not frequently used.
[0][.][1][2]…[9] Numeric keys [1] through [6] are triple-function keys that can
operate as simple numeric keys, be used to select a
parameter (as labeled at the top of the key), and can be
used in conjunction with the [SHIFT] key to select a
parameter action (this function is less frequently used).
[COMP/1] Used to specify the solvent composition ratio in time program
mode.
[FLOW/2] Used to specify the flow rate in normal operating mode and
time program mode
[EVENT/3] Used to specify the event relay output in normal operation
mode and time program mode.
MPa

6
[VALVE/4] Used to specify the solvent selection unit in normal operation
mode and time program mode.
[PMAX/5] Used to specify the maximum pressure in normal operation
mode and time program mode.
[PMIN/6] Used to specify the minimum pressure in normal operation
mode and time program mode.
[EDIT/ENTER] Used to confirm setting values.
[CLEAR] Used to clear error messages and parameter values which
were entered incorrectly.
[▲][▼] Used to display the next/previous step in a time program.
2.3. Rear Panel
FUSE
PUSH
FUSE
PUSH
T1.6A
T2.5A
100-120V
220-240V
FUSE
1
2
3
4
5
6
7
PRESS. ZERO
A
DJ.
EVENT
V
ALVE
GRAD.
LOW PRESS.
8
AC INPUT
GND
FUSE
RS-232C
R
R
LC-Net Connectors
Fan
Fuses
Power Inlet Ground Terminal
Input/Output Terminals
Pressure Adjustment
Trim
Event Relay Output
Connector
Solvent Selection Unit
Connector
Low-Pressure Gradient
Unit Connector
Figure 2.3 Rear Panel

7
Part Function
Low-Pressure Gradient Unit
Connector
Accepts a cable from the low-pressure gradient unit
(LG-1580-02).
Solvent Selection Unit Connector Accepts a cable from the 6-solvent selector valve
unit (LV-1580-03).
Event Relay Output Connector Connects with external equipment (i.e., a 2-column
switching valve unit).
Pressure Adjustment Trim Used to zero the pressure (when no pressure is
applied).
LC-Net Connectors Connect with LC-Net cables when using a 2-pump
high-pressure gradient or a system controller.
Signal Input Terminals:
1 STOP IN 4 GND
2 PUMP ON 4 GND
3 PRGM RESET/RUN 4 GND
5 STOP OUT 6 STOP OUT
7 PRESS 4 GND
8 COMP 4 GND
Accepts an event relay signal to stop solvent
delivery.
Accepts an event relay signal to start solvent
delivery.
Accepts an event relay signal to reset the time
program (reset to initial conditions) then restart
it.
This contact is normally open. When a problem
occurs (OVER PRESS, UNDER PRESS, STOP IN
input),
the contact is closed.
Outputs an analog signal proportional to the
pressure
0 MPa: 0 mV
50 MPa: +100 mV
Outputs an analog signal in proportion to COMP A
0%: 0 mV
100%: +100 mV
Fan Cools the inside of the instrument.
Fuses
Power Input Terminal Accepts the power cable.
Ground Terminal Used to ground the instrument.
(This is not the GND terminal for input/output
signals)

8
2.4. Right Side Panel
Pressed-in nuts for securing the injector holder
Pressed-in nuts for securing the stack band
Figure 2.4 Right Side Panel

9
2.5. Bottom Panel
Rubber feet Fixing screws for shipping
Solvent drain port
Vat post
Figure 2.5 Bottom Panel
Part Function
Solvent drain port Allows mobile phase solvent or plunger washing
solvent (water) leaks to drain.
Vat post Secures the receiving vat.
Fixing screws Fix internal moving parts to prevent damage
during shipping.
Note: The fixing screws must be removed prior
touse.

10
3. Power-ON and Power-OFF
3.1. Power-ON and Diagnostic Test
Turn the power switch, located at the lower left of the front panel, to the ON position. A
diagnostic test will be performed automatically. The diagnostic test examines the following
areas:
•ROM
•RAM
•DC power (direct current power source)
•C-MOS RAM (memory backed-up via battery)
•Pressure sensors
If the diagnostic test detects a problem in any of these areas, an error message is
displayed and the diagnostic test is stopped.
Note 1: If a ROM, RAM, or DC power error occurs, turn the power off and then on again. If
the error reoccurs, contact your local JASCO distributor.
Note 2: If a C-MOS RAM, or pressure sensor error occurs, follow the instructions provided
in the maintenance manual.
The screen shown in Fig. 3.1 will appear after the diagnostic test has been completed.
Figure 3.1 describes each section of the screen.
Figure 3.1 Constant Flow Rate Monitor Screen
The flow rate, maximum pressure, and minimum pressure settings will automatically be
set to the values that were in effect when the power was turned off. The timer will always
be placed in the OFF position upon turning on the power, regardless of the time setting in
effect when the power was turned off.
C.F 1.000 OFF
0.0 10.0 0.0
MODEFLOWml/minTIMER
PRESSMPaP.MAXP.MIN
Mode:
constant flow rate
Flow rate:
1mL/min Pump OFF timer:
not set
Current pressure:
0.0 MPa Maximum pressure:
10.0 MPa
Minimum pressure:
not set

11
Note 1: Although the pressure is given in MPa (as shown on the display panel), the
pressure can also be given in MPa (megapascals) (refer to Section 3.2). In this
operations manual MPa will be used when describing pressure.
Note 2: The pump OFF timer is used to automatically turn off the pump. The time
countdown begins from the moment the timer is set and the pump stops when the
timer reaches 0.
3.2. Power-OFF
Turn the power switch located at the lower left of the front panel to the OFF position. The
current flow rate, maximum pressure, minimum pressure, and time programs saved in
files will be stored in the C-MOS RAM. These values will be restored when the power is
turned on again. However, the pump OFF timer will revert to the OFF position regardless
of the setting at the time the power is turned off.
Note: Other values, including flow rate correction and pump number, will also be stored
in C-MOS RAM.