AQUATECH LSM User manual

INSTRUCTIONS FOR
0. GENERAL SAFETY INFORMATION, WARNINGS & CAUTIONS
1. INSTALLATION
2. THE USER
3. DISPOSAL
LEVEL SWITCH LSM, LSM-P3 & LSM-TT-B
ISSUE: 5 18/03/10
Head Office: AGM House, London Rd, Copford, Colchester, Essex. CO6 1GT UK
Tel: [phone] Fax: [phone]
Manchester Office: Dolphin House, 130 Princess Road, Manchester M16 7BY
Tel: [phone] Fax: [phone]
group member

Level Switch LSM
Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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CONTENTS
0.0 GENERAL SAFETY INFORMATION ................3
0.1 WARNINGS ................................................................................. 3
0.2 CAUTIONS FOR INSTALLATION............................................... 3
0.3 CAUTIONS FOR OPERATION/USER ........................................ 4
0.4 CAUTIONS FOR MAINTENANCE .............................................. 4
GENERAL............................................................................................................ 5
PRODUCT IDENTIFICATION ............................................................................. 5
1. INSTALLATION INSTRUCTIONS ...............................................6
1.1 GENERAL .................................................................................................. 6
1.2 ADDITIONAL WARNINGS & CAUTIONS.................................................. 6
1.3 PROCEDURE............................................................................................. 6
1.3.1 LOCATION.......................................................................................... 6
1.3.2 FIXING ................................................................................................ 6
1.3.3 ELECTRICAL ...................................................................................... 7
1.3.4 LIMITS OF OPERATION (standard equipment). .................................. 8
2. USER INSTRUCTIONS ...............................................................9
2.1 TYPICAL INSTALLATION EXAMPLES ..................................................... 9
2.2 DIL SWITCH SETTINGS.......................................................................... 12
3. DISPOSAL.................................................................................12
EC DECLARATION OF CONFORMITY ..........................................12

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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0.0 GENERAL SAFETY INFORMATION
¾These instructions are intended for the installer/operator/user/maintenance of this equipment
and must be kept with the equipment, for the life of the equipment and made available to all
persons. Please read GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and
CAUTIONS 0.2, 0.3 & 0.4 before doing anything else, and then follow them carefully.
¾The unit must only be installed/operated/used/maintained by a competent person; A
competent person is someone who is technically competent and familiar with safety practices
and the hazards involved.
¾Failure to install/operate/use/maintain the equipment as recommended below could cause
damage to the equipment any anything subsequently connected to it, and invalidate the
warranty provided by AquaTech-Pressmain to the buyer.
¾Any damage caused to the equipment by misapplication, mishandling or misuse could lead to
risk of Electrocution, Burns, Fire, Flooding or injury to people or property dependent
upon the circumstances involved.
¾This equipment automatically restarts after a power interruption.
¾We accept no responsibility or liability for any consequences or damage/losses due to
misapplication, mishandling or misuse of the equipment.
¾The latest version of this instruction manual with up to date safety information can be
downloaded from our website at www.aquatechpressmain.co.uk
0.1 WARNINGS
0.1.1 Do not touch any live parts for at least 5 minutes after switching off the electricity supply.
Failure to observe this will constitute a severe Electric shock and/or Burns hazard and
may be lethal.
0.1.2 The equipment is only suitable for earth referenced supplies and must be permanently
earthed to avoid Electric shock hazard.
0.1.3 With equipment isolator OFF, mains voltage may still be present from BMS system. This
constitutes an Electric shock hazard.
0.1.4 Some equipment is designed to operate with liquid temperatures up to 150 degrees
centigrade and will constitute a Burns/scalding hazard.
0.1.5 The equipment must not be pressurised beyond the maximum working pressure as
stated otherwise serious mechanical damage/destruction could occur causing injury to
people or property.
0.1.6 The equipment must not be heated/chilled beyond the maximum/minimum working
temperature as otherwise serious mechanical damage/destruction could occur causing
injury to people or property.
0.1.7 Any damage to equipment caused by misapplication, mishandling or misuse could lead
to Electric shock hazard, Burns hazard, Fire hazard, Flooding hazard or cause injury to
people or property.
0.2 CAUTIONS FOR INSTALLATION
0.2.1 READ GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and CAUTIONS 0.2, 0.3 & 0.4
0.2.2 The unit should only be installed/operated by a competent person; A competent person is
someone who is technically competent and familiar with safety practices and the hazards
involved.
0.2.3 Store in a dry place to avoid damp conditions deteriorating the equipment.
0.2.4 Protect against dirt, damage and frost. Frost/freezing will damage components.

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0.2.5 The equipment is only suitable for installation in a clean, dust free indoor environment, with
adequate protection from heat and frost. Ambient air temperature should be between 5 and 40
degrees centigrade, non-condensating. Operation outside of these conditions could seriously
damage the equipment.
0.2.6 Ensure the electrical supply is the correct voltage, current, frequency and type for the equipment
supplied and that suitable circuit protection equipment is installed in the supply. Incorrect
electrical installation could be an electric shock/burns/fire hazard.
0.2.7 When accessing the control panel to make electrical connections adopt anti-static procedures
e.g. wear anti-static earthed wristband, to avoid risk of damaging the controller.
0.2.8 Do not operate this equipment prior to commissioning. This could cause irreparable damage to
equipment/pumpset/pipework/system components.
0.2.9 Isolate the equipment before pressure testing system. Excess pressure could cause irreparable
damage.
0.2.10 When chlorination of the system is carried out, ensure that any residual chlorine is removed by
thorough flushing as detailed in the HSE approved code of practice L8, to avoid damaging the
equipment/pumpset. The normal level of chlorination is up to 2 parts per million (ppm), but shock
dosing for sterilization purposes, at 25-50 ppm for 24-48 hours is acceptable as long as all
chlorine is removed once the process is complete. Chlorination beyond these limits could
seriously damage pumpset components and WILL NOT be covered by the warranty.
0.2.11 The installer/user is responsible for the installation of the correct earthing and protection
according to valid national and local standards. All operations must be carried out by a suitably
qualified person.
0.2.12 The equipment is only suitable for earth referenced supplies and must be permanently earthed to
avoid electric shock hazard.
0.2.13 The equipment must be permanently earthed with appropriate sized Earthing.
0.2.14 Never perform high voltage resistance tests on control panels without first disconnecting the
panel from the circuit being tested as this will damage the built in electronic components.
0.3 CAUTIONS FOR OPERATION/USER
0.3.1 READ GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and CAUTIONS 0.2, 0.3 & 0.4
0.3.2 The unit should only be operated/used by a competent person; A competent person is someone
who is technically competent and familiar with safety practices and the hazards involved.
0.3.3 The Owner/User of this equipment has a Legal Responsibility to ensure that it is subject to
regular formal inspections.
0.3.4 The equipment must not be run until commissioned by an authorised AquaTech-Pressmain
agent, this could cause irreparable damage.
0.3.5 The equipment should be left switched ON for normal operation.
0.3.6 Portable telephones or other electro-magnetic equipment must not be used near the set to avoid
corruption of program and unpredictable operation of unit.
0.4 CAUTIONS FOR MAINTENANCE
0.4.1 READ GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and CAUTIONS 0.2, 0.3 & 0.4
0.4.2 The unit should only be operated/maintained by a competent person; A competent person is
someone who is technically competent and familiar with safety practices and the hazards
involved.
0.4.3 Where the equipment is fitted with Building Management Services (BMS) interconnections, notify
the appropriate persons before switching OFF for maintenance or adjustments, to avoid
unnecessary alarm conditions occurring. WARNING: With isolator OFF, mains voltage may still
be present from BMS system. This constitutes an Electric shock hazard.
0.4.4 Switch OFF equipment before accessing control panel.

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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GENERAL DESCRIPTION
The LSM Range units offer an easy solution to many water level control and alarm functions.
They can be used either with conductive probes in suitable conductive fluids or, with float switches in non
conductive fluids.
They have been used for emptying, filling, or level warnings within storage tanks (i.e. low or high
level) amongst many other applications, of which, some are shown within this instruction manual.
The LSM-P series come assembled with sleeved 4mm diameter 303 stainless steel probes, at a length of 1
metre, which can be cut to suit most tanks.
In applications where it is not possible to make use of the integral probes, model LSM is available, allowing
wall mounting of the unit remote from the tank/pit and using up to 4 remote probes which can be up to 15
metres from the control unit.
Units are supplied in a weatherproof case to IP55 Standard BS5490 (1977) with two glands, which accept
cables from 6 to 8 mm in diameter, other sizes on request.
Supply voltage: Standard 240V AC 50HZ 1Ø, from an isolating switch and 2 Amp fuse - NOT SUPPLIED.
PRODUCT IDENTIFICATION
LSM - XX - X
A = Single volt free Relay (R1)
B = Twin volt free relays (R1 & R2)
Blank = no integral probes
P3 = 3 off integral M4 probes
P6 = 6 off M4 probe unit (separate item)
TT = Twin tank no probes
TL = As LSM control with addition of audible alarm
Level Switch Microprocessor Controlled
example of a LSM unit (no integral probes) RA240 remote audible/visual alarm
RA - XXX
24 = 24VAC or DC components
240 = 240VAC components
Remote audible/visual alarm unit powered from alarm relay of LSM unit

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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1. INSTALLATION INSTRUCTIONS
FOR LIQUID LEVEL SWITCH LSM, LSM-P3 & LSM-TT-B
1.1 GENERAL
These instructions are intended for the installer of this level switch. Please follow them carefully.
Failure to install the equipment as recommended below could invalidate the warranty.
1.2 ADDITIONAL WARNINGS & CAUTIONS
1.2.1 READ GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and CAUTIONS 0.2, 0.3 & 0.4
1.2.2 Units fitted with a 1/2” BSP parallel thread (LSM-P3) must not be installed into a taper
thread fitting otherwise the equipment will be damaged causing mechanical failure.
1.2.3 Pressure imposed on sensing probes must not exceed 1.0 Bar otherwise the equipment
will be damaged causing mechanical failure.
1.3 PROCEDURE
1.3.1 LOCATION
The level switch LSM is for wall mounting with brackets provided using separate probe unit/float
switches.
The level switch LSM-P3 can be installed through the tanks lid.
Ensure that the location provides adequate clear space for reasonable access to all parts. There
must be sufficient room to:-
open control box lid;
withdraw level switch from tank.
1.3.2 FIXING
To install the level switch LSM-P3 in a tank lid either: -
a) drill a 20mm diameter clearance hole and use the back nut and washer provided, to ensure
water tight seal, or
b) install in a 1/2” BSP parallel thread and ensure a water tight seal.
105 mm
105 mm
1000 mm
60 mm
20 mm
Sensing Probes
1/2" BSP thread
Fig 1. Mechanical detail of Level switch LSM-P3

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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Fig 2. Typical installation example for Level Switch LSM-P3.
1.3.3 ELECTRICAL
1.3.3.1 READ GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and CAUTIONS 0.2, 0.3 &
0.4
1.3.3.2 All wiring must comply with the latest edition of local wiring regulations.
1.3.3.3 Wear anti-static wrist strap at all times to avoid static discharge causing problems with the
built in electronic program.
1.3.3.4 Connect incoming electrical mains supply to identified terminals in control box (see fig. 3).
Ensure voltages and frequency indicated on the labels correspond with supply mains data and
that the supply fuse ratings are correct for the total current rating of the equipment.
1.3.3.5 Connect volt free relay terminals as required. (see fig 3).

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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fig. 3. LSM level switch circuit board layout showing power supply, volt free relay and probe connections,
plus location of DIL switches and adjustable timer.
Probe
Letter Probe Function
A Only used for Relay 1 functions when switching between two levels
B Relay 1 functions
C Only used for Relay 2 functions when switching between two levels
D Relay 2 functions
E Common earth Reference
1.3.4 LIMITS OF OPERATION (standard equipment).
Normal electrical supply 240VAC, 1 phase 50Hz, (other voltages available on request).
Minimum conductivity 15uS.
Maximum cable length to remote probes/switches is 50m using unscreened 0.75 mm 3 core cable.
Maximum water temp 40qC.
Ambient temp 5qto 40qC.
Volt free contacts rated at 240VAC 2A AC1 maximum, 12V 100mA minimum.
Maximum probe length 1 metre.
Maximum pressure imposed on probes is 1.0 bar gauge.
Minimum pressure imposed on probes is 0.0 bar gauge.
Special equipment may be supplied for use beyond these limits by prior agreement with AquaTech-
Pressmain

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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2. USER INSTRUCTIONS
2.1 TYPICAL INSTALLATION EXAMPLES
The following drawings illustrate typical examples of applications and installations using Relay 1 only. For
Relay 2 use, substitute probe connections (C & D) and switch numbers (5, 6 & 7) as appropriate.
LSM-P3-A: High tank level alarm or Emptying a
sump, controlled by 2 probes and a timer: -
1. Cut the correct probes to required length.
2. remove 25mm of insulation from end of probes.
3. set DIL switches/timer as required, see section 2.2
4. e.g. for high level alarm: to energise relay 1 (with sounding
of audible alarm where fitted) when water touches probes,
set all DIL switches to OFF except switch 2 which is set to
ON (Relay 1 delay off). Set timer to maximum (fully
clockwise = 255 seconds).
Probe E
Reference
Probe B (D)
LSM-P3-A: Low tank level protection of pumps with
fail safe relay operation by 2 probes and a timer: -
1. cut the correct probes to required length.
2. remove 25mm of insulation from end of probes.
3. set DIL switches/timer as required, see section 2.2
4. e.g. for level protection of pumps with fail safe relay
operation: to energise relay 1 when water touches probes,
set all DIL switches to OFF (Relay 1 delay on). Set timer to
30 seconds to delay pumps restarting.
Probe E
Reference
Probe B (D)
LSM-P3-A: Low tank level alarm or Filling a tank,
controlled by 2 probes and a timer: -
1. cut the correct probes to required length.
2. remove 25mm of insulation from end of probes.
3. set DIL switches/timer as required, see section 2.2
4. e.g. for low level alarm: to energise relay 1 (with sounding of
audible alarm where fitted) when probes become dry, set all
DIL switches to OFF except switches 1 & 2 which are set to
ON (Relay 1 delay off). Set timer to maximum (fully
clockwise = 255 seconds).
Probe E
Reference
Probe B (D)

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LSM-P3-A: Filling a tank between two levels, using 3
probes and no timer: -
1. cut the correct probes to required length.
2. remove 25mm of insulation from end of probes.
3. set DIL switches as required, see section 2.2
4. e.g. for filling a tank between two levels (start probe “A” and
stop probe “B”): to energise relay 1 when start probe
becomes dry and release relay 1 when stop probe becomes
wet, set all DIL switches to OFF except switch 3 which is set
to ON. Set timer to 0 seconds (Fully Anticlockwise).
Probe E
Reference
LSM-P3-A: Emptying a tank between two levels,
using 3 probes and no timer: -
1. cut the correct probes to required length.
2. remove 25mm of insulation from end of probes.
3. set DIL switches as required, see section 2.2
4. e.g. for emptying a tank between two levels (start probe “B”
and stop probe “A”): to energise relay 1 when start probe
becomes wet and release relay 1 when stop probe becomes
dry, set all DIL switches to OFF except switches 1 & 3 which
are set to ON. Set timer to 0 seconds (Fully Anticlockwise).
Probe E
Reference
LSM-P3-B: Low and High tank level alarms with
separate volt free output for each, using 3 probes
and a timer: -
1. cut the correct probes to required length.
2. remove 25mm of insulation from end of probes
3. set DIL switches as required, see section 2.2
4. e.g. for high and low level alarm: to energise relay 1 when
probe “B” becomes wet (high level alarm) and relay 2 when
probe “D” becomes dry (low level alarm), set all DIL
switches to OFF except switches 2, 5 & 6 which are set to
ON. To activate audible alarm (where fitted) at high level,
set switch 4 OFF, alternatively to activate audible alarm
(where fitted) at low level, set switch 4 ON.
Probe E
Reference
LSM-TT-B: Twin Tank Level alarm
using optional LWP3 probes or
level switches.
1. Install Level probes/switches as per
instructions supplied with them.
2. set DIL switches as required, see
section 2.2. For low water level
alarm all DIL switches should be
OFF.
A B C D E
Probes
TANK 1 TANK 2
Level Sensor
LWP3/1
Level Sensor
LWP3/2
Wiring by others
FL1 FL2
Maximum cable length 50 metres
unscreened 2 core.
1
2
1
2
BD
E
E

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Aquatech-Pressmain Limited Instruction manual\Liquid Level Switch LSM
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Filling/Emptying a tank or Low/High Level alarms
controlled by LW3 probe & timer: Using LSM & one
or two LW3 conductivity probes: -
1. fit probes to required length.
2. connect probes to required terminals
3. set DIL switches/timer as required, see section 2.2
e.g. for filling a tank between two levels (start probe “A” and stop
probe “B”): to energise relay 1 when start probe becomes dry and
release relay 1 when stop probe becomes wet, set all DIL
switches to OFF except switch 3 which is set to ON. Set timer to
0 seconds (Fully Anticlockwise).
Filling/emptying a tank or Low/High Level alarms
between one or two levels with a timer: Using LSM &
MSF-100 float switches: -
1. fix weight to cable at required length.
2. Wire float switches to required terminals
3. set DIL switches as required, see section 2.2
e.g. for emptying a tank between two levels (start probe “B” and
stop probe “A”): to energise relay 1 when start probe becomes
wet and release relay 1 when stop probe becomes dry, set all
DIL switches to OFF except switches 1 & 3 which are set to ON.
Set timer to 0 seconds (Fully Anticlockwise).
Filling/emptying a tank or Low/High level alarms
using Stainless Steel float switches: Using LSM &
one or two MSL-104 float switches: -
1. mount switches as required.
2. wire switches to required terminals
3. set DIL switches as required, see section 2.2
e.g. for high and low level alarm: to energise relay 1 when probe
“B” becomes wet (high level alarm) and relay 2 when probe “D”
becomes dry (low level alarm), set all DIL switches to OFF
except switches 2, 5 & 6 which are set to ON. To activate
audible alarm (where fitted) at high level, set switch 4 OFF,
alternatively to activate audible alarm (where fitted) at low level,
set switch 4 ON.

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2.2 DIL SWITCH SETTINGS
The following table is to illustrate the various options available for relay and timer operations, see also fig.
3: -
DIL switch
number
Switch OFF: (pushed to the left) Switch ON: (pushed to the right)
Switch 1:
(at the top)
Relay 1 energised when probes E and B
are wet.
Relay 1 energised when probes E and B
are dry.
Switch 2: Relay 1 energises after timer has
expired. (delay on)
Relay 1 releases after timer has expired.
(delay off)
Switch 3: Set switch 3 to OFF to use 2 probes (E
and B) with timer function.
Set switch 3 to ON to use 3 probes (E, A
& B) without timer function.
Switch 4: Audible alarm (optional extra) sounds
when relay 1 operates.
Audible alarm (optional extra) sounds
when relay 2 operates.
Switch 5: Relay 2 (where fitted) energised when
probes E and D are wet.
Relay 2 (where fitted) energised when
probes E and D are dry.
Switch 6: Relay 2 (where fitted) energises after
timer has expired. (delay on)
Relay 2 (where fitted) releases after timer
has expired. (delay off)
Switch 7: Set switch 7 to OFF to use 2 probes (E
and D) with timer function.
Set switch 7 to ON to use 3 probes (E, C
& D) without timer function.
Switch 8:
(at the bottom)
Low sensitivity for normal tap water. High sensitivity for fluids with low
conductivity (purer water).
3. DISPOSAL
Disposal of this product or parts of it must be carried out in accordance with the following guidelines:
Use the local public or private recycling/waste collection service.
In case such a recycling/waste collection service does not exist or cannot handle the materials used in
this product, please deliver the product or any hazardous material from it to your nearest AquaTech-
Pressmain office.
EC Declaration of Conformity
We, Aquatech-Pressmain Limited, declare this
LSM LIQUID LEVEL SWITCH
MODELS:LSM, LSM-P3 & LSM-TT-B
when installed and used in accordance with the instruction manual provided is in conformity with
the following standards:
BS EN 60204-1:2006, BS 61000-6-1:2001, BS 61000-6-3:2001
following provisions of EEC Directives:
Low Voltage Directive 73/23/EEC and 93/68/EEC,
Electro Magnetic Compatability Directive 89/336/EEC with amendments 92/31/EEC.
12.11.04
I.D.Taylor, I.Eng.MIET. Director, AquaTech-Pressmain Limited.
AquaTech-Pressmain Limited
AGM House, London Rd, Copford, Colchester, Essex CO6 1GT UK
Telephone: [phone] Fax: [phone]