Cole Parmer WS-200 Series User manual

Cole-Parmer®
WS-200 Series
Water Stills
Instruction Manual
700668(ES)-CPB ISSUE 2.7

Contents
Location and Services 3
WS-200A-4 - Components, Assembly, Operation & Spares 4
WS-200AD-4 - Components, Assembly, Operation & Spares 9
WS-200A-8 - Components, Assembly, Operation & Spares 14
Distillate Collection & Reservoir System 19
Connection of Water Stills to Deionised and Pre-treated Water Supplies 20
Cleaning 22
Fault Finding 23
Circuit & Wiring Diagrams 24

3
In order to obtain the optimum performance from your new
Cole-Parmer Water Still careful consideration should be given to
the intended location and the availability of services such as water,
electricity and drain.
Please study the following notes before commencing installation.
Before Use
If the equipment is not used in the manner described in this
manual then its performance and operation will be impaired.
Cole-Parmer Water Stills are designed to operate under the
following conditions:
vFor indoor use only.
v Ambient temperature +5°C to +40°C.
v Altitude up to 2000m.
v Relative humidity not exceeding 80%.
v Mains supply voltage fluctuates not greater than ±10% of normal.
v Over voltage Category II IEC60364-4-443.
v Polluting degree 2 IEC664.
1. Bench Wall Mounting
Cole-Parmer Water Still models WS-200A-4 and WS-200A-8
can be either bench or wall mounted and a bracket is provided
for the latter purpose. A gap of at least 50cm should be left at
the right hand end of the unit to allow access to the heating
elements.
For reasons of weight, models WS-200AD-4 and WS-200A-8
are best bench mounted, but if it is desired to elevate the unit
then a stout shelf should be used.
2. Electricity Supply
N.B. The Cole-Parmer Water Still is classified as
“Permanently Connected Equipment” and should be
connected to the electricity supply by a qualified
electrician in the manner described in the electrical
installation section of this manual.
The Cole-Parmer Water Stills are available in three models,
WS-200A-4, WS-200AD-4 & WS-200A-8.
A suitable supply for the WS-200A-4 is rated at 3kW,
220-240v, 50/60Hz~ single phase. A suitable supply for the
WS-200AD-4 & WS-200A-8 is rated at 6kW, 220-240v,
50/60Hz~ single phase.
WS-200A-4 units should be connected to the mains supply via
a double pole 30mA Residual Current Breaker with over current
protection (RCBO) isolating circuit breaker rated at 15A.
WS-200AD-4 and WS-200A-8 units should be connected to the
mains supply via a double pole 30mA Residual Current Breaker
with over current protection (RCBO) isolating circuit breaker
rated at 32A.
If you have any doubts about the suitability of your supply,
consult a qualified electrician before installing your Cole-Parmer
Water Still.
3. Water Supply
A cold water supply is required for coolant and feed purposes.
This may be from the mains supply or a header tank having a
flow capacity of at least 1 litre/min. for the WS-200A-4 and 2
litres/min. for the WS-200A-8 and WS-200AD-4. The pressure
range should be within 3-100 p.s.i. (0.2–7 x 105Nm-2).
If the feed water quality is poor and likely to contain particulate
matter, such as rust or silt, it is advisable to fit a pre-filter unit
before the still.
4. Drain
A waste water drain is required. It is important that the
distance between the drain and the Water Still is kept as short
as possible to reduce the possibility of pressure build-up.
Similarly, the drain pipe from the still should fall straight,
without any kinks or bends, to allow an unimpeded flow. It is
also recommended that the unit is connected to properly earth
bonded water supplies and drainage systems.
5. Storage Tank
A suitable reservoir, the WR20 for instance, is required for the
collection of the distillate. This should be positioned beneath
the still ensuring that the distillate can flow into the reservoir
without hindrance.
6. Maintenance
The location of the still should facilitate easy access for routine
cleaning and maintenance. With regards to the latter, it is
recommended that a space of at least 50cm be provided on
the right hand side of the Water Still cabinet. This is to allow
the removal of the side cover and replacement of the heating
element.
Location & Services

4
Item Description Part
no. number
1 Perspex Screen M484
2 Boiler WBA
3 Funnel WF48
4 Condenser WC48/M2
5 Wall Mounting Bracket M510G
6 Green ‘Mains On’ Indicator 700691 (S)
7 White ‘On/Off’ Switch 700988 (S)
8 Amber ‘Reservoir Full’ Indicator 700987
9 White ‘Clean’ Switch 700988 (S)
10 Reservoir Pressure Switch WPS
11 Heaters Connector Terminal A4000/HTB
12 Water Flow Sensor Assembly I/A4000HK/1
Item Description Part
no. number
13 Solenoid Assembly A4000/SA
14 Mains Water Mini Valve Assembly 7001059 (S)
15 Reservoir Water Level Sensor WLS
16 Distillate Outlet Pipe (Bench Mounted) –
17 Cooling Water Pipe to Drain (16mm) –
18 Heater Assembly A4000/HA
19 Thermostat WT4
20 stopcock A4000/RCOCK
21 Distillate Outlet (Wall Mounted) –
22 Boiler Level Control WL48
23 Boiler Plastic Coupling WBC1
24 Boiler Retaining Spring 700007
List of Major Components – WS-200A-4
24 23
22 21
20
19
17
16
15
12
11
10
9
8
7
6
5
4
3
2
1
18
13
14
Lid
End
Plate
Fig. 1
WS-200A-4

WS-200A-4 Assembly
Your Cole-Parmer Water Still WS-200A-4 has been designed with
ease of assembly specifically in mind. Please study the installation
diagram and the enclosed DVD before commencing the installation.
Follow the sequence of instructions and do not connect the mains
electricity supply until directed.
1. From the outer packaging remove all the components including
the metal cabinet containing the glass boiler.
2. Before unpacking the individual components, identify them on
the check list below:
WS-200A-4 Unit containing boiler.
Condenser – WC48/M2
Heater – W48H
Boiler Level Control – WL48
Funnel – WF48
Reservoir Water Level Sensor – WLS
Output Hose Assembly – I/A4000HK/2
Hose Kit – I/WH48/1/B
Wall Mounting Bracket – M510G
3. Remove the perspex viewing screen (Fig. 1, item 1) from the
unit by lifting it up using the finger recess. Remove the internal
packaging carefully. Snip the temporary ties holding the boiler
retaining springs (Item 24).
4. Remove the end plate and lid by removing the retaining screws.
5. Ensure that the sealing O ring and the stabilising O ring are
correctly positioned on the vapour tube of the boiler. Fit the
condenser (Fig. 1, item 4) to the vapour tube ensuring that the
distillate outlet faces the front and the two water connections
are parallel to the unit Fig 1a. When slight resistance is felt
when fitting the condenser, press down slightly on the top
of the condenser until a gap of approximately 19mm exists
between the condenser and the boiler.
6. Take the 1m length of 8mm hose from hose kit I/WH48/1/B
and connect one end to the distillate outlet of the condenser
(Fig. 1a). Secure with a tie wrap. Pass the other end of the tube
through the cabinet hole, Fig. 1, item 21 if to be wall mounted,
or hole, Item 16 if bench mounted.
7. Take the boiler level control WL48 (Fig. 1, item 22). Remove the
end split nut and central part of the boiler plastic coupling (Item
23) leaving the other split nut in place, and the internal seal
in the boiler level control. Ensure the stopcock is fully closed
(screwed down).
8. Take the 16mm earth spigot located inside the WS-200A-4 and
place the 16mm tubing part of it into a beaker of hot water for
approximately 20 – 30 seconds; this will make the tubing more
supple. Connect the 16mm tubing to the boiler level control
(Item 22) drain connection (below the stopcock). Secure with a
tie wrap.
9. Take the 1m length of 16mm hose from hose kit I/WH48/1/B.
Place one end into a beaker of hot water for approximately
20 – 30 seconds. Thread the tube through hole (Fig. 1, item
17) until approximately 300mm of tubing is inside the cabinet.
Connect to the 16mm earth spigot and secure with a tie wrap.
10. Pull the 16mm hose back out of the cabinet until a gap of
approximately 5mm exists between the boiler level control and
the boiler connection.
11. Place the boiler plastic coupling split nut and central part onto
the boiler connection. Connect the boiler level control to
the boiler, ensuring that the internal seal of the boiler plastic
coupling is fitted inside the boiler connection and the boiler
level control connection. Tighten the boiler plastic coupling.
12. Loosen the black cap on top of the boiler level control. Fit the
funnel into the top of the boiler level control and tighten the
black cap.
13. Take the hose assembly I/A4000HK/2 and connect the end
marked ‘2’ to the top connection of the condenser. Connect
the other end marked ‘3’ to the boiler level control.
14. Identify the water flow sensor assembly (Fig. 1, item 12) inside
the cabinet. Connect the red connector marked ‘1’ to the
bottom connection of the condenser. It may be necessary to
slightly twist the condenser to release any kinks in the water
sensor assembly.
15. Remove the heater black cap and rubber ring from the boiler.
Place the black cap onto the heater until it is approximately
25mm from the electrical connectors end. Push the rubber ring
onto the heater and into the black cap.
16. Fit the heater into the boiler and screw on the black cap. When
the black cap is tight push the heater through the black cap
until the end of the heater sits in the nodule at the end of the
boiler.
Do not overtighten the screw cap as this may cause the
boiler to break, or push the heater in too far as this may
break the nodule.
Fig. 1b
5
Fig. 1a
Cooling water outlet
Distillate
Outlet
Condenser
Sealing o-ring
Vapour tube
Stabilising o-ring
PCB
Thermostat
Relay
NE
L
Heater
lead
Heater
Terminal
Blocks

6
17. Thread the two heater connectors through the hole into the
electrical control compartment and connect to the heater
terminal block. Brown to Brown, Blue to Blue, (Fig. 1b).
SAFETY: It could be possible to mis-locate the heater
crimps on to the heater terminal block tags. Ensure
that the heater crimps are properly located onto
the heater terminal block tags and fully locked on.
Attempt to pull the crimp off the tag to ensure full
attachment.
18. Refit the end plate and lid.
19. Move the unit to its working location. If it is to be wall
mounted use the mounting bracket (Fig. 1, item 5). Ensure a
space of at least 50cm to the right of the unit to allow access.
20. Connect the cold water supply to the mains water inlet. The
tubing selected should have a safe working pressure of at
least equal to the pressure of the water supply and should be
adequately secured with hose clips.
DO NOT TURN ON WATER SUPPLY
21. THIS EQUIPMENT MUST BE EARTHED!
Carry out the electrical installation. This should only be carried
out by a suitably qualified electrician.
I/A4000HK/1
I/A4000HK/2
I/WH48/1/B
16mm tubing x 1m - I/WH48/1/B
Solenoid
Condenser
Thermostat &
Thermostat Glass
Heater
Boiler
Level
Control
Funnel
Rotaflo Stopcock
1
2
3
Water Flow Switch
A4000 Installation Diagram
Boiler Mains Water
Inlet Mini
Valve
Electrics
Reservoir
Water Level
Sensor
8mm Earth Spigot
16mm Earth Spigot
To Distillate
Reservoir
To Drain
Thursday, 17 July 2014
WS-200A-4 Installation Dia-
gram
The WS-200A-4 is classed as permanently connected
equipment. The earth spigots should pass a high current (ie.
>200mA).
The equipment is supplied with 1.5m of flexible, triple
core, circular cable to the following specification:
1.5mm², to BS 6500 or equivalent and <HAR> or BASEC
approved.
Connection to the mains electrical supply should be via a
double pole 30mA Residual Current Breaker with Overcurrent
protection (RCBO) isolating circuit breaker switch with a
continuous current carrying capacity of 15A at 250V and
overcurrent of 15A.
DO NOT SWITCH ON ELECTRICAL SUPPLY.
22. Connect the reservoir water level sensor WLS (Fig. 1, item 15) to
the WS-200A-4 and secure with a tie wrap.
Place the glass pressure bell in the collection reservoir, following
the instructions given on page 19.
23. Operate the WS-200A-4 Waterstill as per Operating Instructions
and check for leaks.
24. Fit the Perspex viewing screen

7
WS-200A-4 Operation
The following instructions apply to the WS-200A-4 Water Still
where the water feed to the boiler is via the mains supply or a
header tank.
1. Before switching on either the mains electricity or water supply,
identify the control switches and indicator lights on the front of
the cabinet.
Green Light – When illuminated this shows that there is mains
supply voltage to the unit. Under no circumstances should the
cabinet end-panel be removed when this light is illuminated.
White ‘On/Off’ Switch – This is the primary switch for
controlling water and electricity inside the still. The switch
illuminates when pressed in the ON position.
Amber Light – When illuminated, this indicates that the
distillate collection reservoir is full as detected by the level
control.
White ‘Clean’ Light – This shuts off the heating element
but allows water to flow into the boiler when the still is being
commissioned or cleaned. When pressed in the CLEAN position
the switch illuminates.
2. Carefully check the following:
The appropriate electricity, water and drain services have been
provided. If in doubt, consult the LOCATION & SERVICES
SECTION of this manual.
The ON/OFF switch on the control panel is in the OFF position.
The CLEAN switch is pressed in the CLEAN position.
The stopcock on the boiler level control is closed.
The reservoir water level sensor is fitted to the distillate
collection vessel.
The dummy shorting plug is fitted to the boiler level control DIN
socket on the cabinet.
3. Ensure all earth leads are connected to the earth point.
4. Check all glassware for any damage.
5. Switch on the electricity supply – the green light illuminates.
6. Press the ON/OFF switch to the ON position – the switch will
illuminate.
7. Recheck that the CLEAN switch is in the CLEAN position and
illuminated.
8. Turn on the mains water supply and using the mini valve
assembly, adjust the flow rate to approximately 1 litre/min. This
can be achieved by observing the drain water from the boiler
level control and adjusting the mini valve assembly accordingly.
9. Check for water leaks.
10. Observe the boiler now filling with water to cover the heating
element. When water has reached the pre-set limit, the excess
will discharge to drain. Check the water drains freely and does
not back up into the boiler level control.
11. Switch the CLEAN button off by pressing it a second time. The
switch light goes out.
12. The heater will now warm up and eventually run at a red glow.
If the flow rate is insufficient, the heater will not switch on. This
will require adjustment of the mini valve assembly to be opened
further. After about 2 – 3 minutes of operation distilled water
will emerge from the outlet pipe falling into the collection
reservoir.
13. To avoid excess wastage of coolant water, make further
adjustments to the mini valve assembly. Slowly reduce the flow
rate until the flow control switch switches off the heater, then
increase the flow until the power is restored.
14. Refit the Perspex screen.
15. Safety Cut-Outs – All Cole-Parmer Water Stills are protected
by the following safety devices.
Flow Control Switch – Monitors the flow of coolant water
into the still and shuts off the heating element if the flow is
insufficient.
Thermostat Cut-Out – In normal operation the water within
the glass will be at 100°C. In single fault conditions, i.e. in
the event of water supply failure, the content will increase
to 112°C where upon a resettable thermostat will operate.
Once switched, the thermostat has to be manually reset. This
is achieved by unscrewing the black knob located inside the
cabinet and pressing the reset button.
Reservoir Control – Is positioned in the collection reservoir
and switches off both the electricity and water supplies when
the reservoir is full of distillate water. The water supply is shut
off after around 7 minutes after the reservoir is full to allow the
heating element to cool.
It is recommended that the operation of the flow switch and
reservoir control is checked on a regular basis.
a. Simulation of Mains Water Supply Failure
Turn off the mains water supply at the tap. This should switch
off the heating element. Turning the tap on again will switch
the heater on.
b. Simulation of Reservoir Full Condition
Lower the glass pressure bell of the reservoir water level sensor
into the distillate to a depth of 150mm. This will switch off the
heating element immediately and the cooling water after 7
minutes. Raising the bell will cause both to be switched back
on.
16. Switching Off – Push the CLEAN switch to the ON position.
Wait until the residual heat contained in the heating element
has dispersed and no boiling is evident. Turn off water supply.
Push ON/OFF switch to OFF position. Isolate from mains
electricity supply.

WS-200A-4 Spares
Boiler WB4
Funnel WF48
Condenser WC48/M2
‘Mains On’ Green Indicator 700691(S)
‘On/Off’ White Switch 700988(S)
‘Reservoir Full’ Amber Indicator 700987
‘Clean’ White Switch 700988(S)
Reservoir Pressure Switch WPS
Heater Terminal Block A4000/HTB
Solenoid Assembly A4000/SA
Water Flow Sensor Assembly and Hoses I/A4000HK/1
Condenser to Boiler level control Hose (Output Hose Assembly) I/A4000HK/2
Reservoir Water Level Sensor WLS
Mains Water Mini Valve Assembly 7001059(S)
Thermostat Glass Tube WTT48
Thermostat WT4
Boiler Level Control WL48
Boiler Plastic Coupling WBC1
Heater Assembly A4000/HA
Heater Assembly 220V A4000/HA220
Boiler Retaining Spring 700007
w Stopcock Assembly A4000/RCOCK
6 Way Electrical Terminal Block A4000/ETB
Ceramic Terminal Block A4000/CTB
5 DIN Socket Assembly A4000/DIN
Boiler Vapour Tube Sealing O Ring I/M502
Boiler Vapour Tube Stabilising O Ring I/QR38/24
Relay Assembly A4000/RA
PCB 700804(ES)
Distillate Output and Boiler Level Control Drain Hose Kit I/WH48/1/B
Wall Mounting Bracket M510G
Black Phenolic Screw Cap I/QC38/25
8

9
Item Description Catalogue
no. number
1 Perspex Screen M484
2 Boiler (2 off) WB4
3 Funnel WF48
4 Condenser (2 off) WC48/M2
5 Green ‘Mains On’ Indicator 700691(S)
6 White ‘On/Off’ Switch 700988(S)
7 Amber ‘Reservoir Full’ Indicator 700987
8 White ‘Clean’ Switch 700988(S)
9 Reservoir Pressure Switch WPS
10 Terminal Strip for Heaters A4000/HTB
11 Water Flow Sensor Assembly I/A4000DHK/1
12 Solenoid Assembly A4000/SA
13 Mains Water Inlet Valve Assembly 7001059(S)
Item Description Catalogue
no. number
14 Reservoir Water Level Sensor WLS
15 Distillate Outlet Pipe –
16 Drain Pipe from W4L2A –
17 Cooling Water Pipe to Drain (8mm) –
18 Cooling Water Pipe to Drain (16mm) –
19 Thermostat (2 required) WT4
20 Heater Assembly (2 required) A4000/HA
21 Boiler Level Control (rear) W4L2A
22 stopcock A4000/RCOCK
23 Boiler Level Control (front) WL48
24 Boiler Plastic Coupling WBC1
25 Retaining Springs 7000007
List of Major Components – WS-200AD-4
24 23 22 21 20
18
17
16
15
14
12
10
9
8
7
6
5
4
3
2
1
25
19
13
11
Lid
End
Plate
Fig. 2
WS-200AD-4

9. Fit the condenser to the vapour tube of the rear boiler ensuring
that the distillate outlet faces the front and the two water
connections are parallel to the unit. When slight resistance is
felt when fitting the condenser, press down slightly on the top
of the condenser until a gap of approximately 19mm exists
between the condenser and the boiler.
10. Pass the free end of the 8mm tubing through the hole (Fig. 2,
item 15).
11. Take the rear Boiler Level Control W4L2A and connect the 8mm
x 300mm vinyl tubing from hose kit I/WH48/3/B to the side arm
and tie wrap (Fig. 2b). Remove the end split nut and central
part of the boiler plastic coupling leaving the other split nut
on, and the internal seal in the boiler level control. Ensure the
stopcock is fully closed (screwed down).
12. Connect the tubing of the 8mm earth spigot hose assembly to
the drain of the rear boiler level control W4L2A and tie wrap.
13. Take the 8mm x 1m vinyl tubing from hose kit I/WH48/3/B and
connect to the 8mm earth spigot hose assembly in step 12 and
tie wrap. Pass the free end of the 8mm tubing through the hole
(Fig. 2, item 16).
14. Place the boiler plastic coupling split nut and central part onto
the rear boiler connection. Connect the boiler level control to
the boiler, ensuring that the internal seal of the boiler plastic
coupling is fitted inside the boiler connection and the boiler
level control connection. Tighten the boiler plastic coupling.
15. Connect the plug of the rear boiler level control to the DIN
socket connector.
16. Refit the front boiler. Refit the thermostat probe removed in
step 5.
17. Fit the condenser to the front boiler vapour tube ensuring
that the distillate outlet faces the front and the two water
connections are parallel to the unit. When slight resistance is
felt when fitting the condenser, press down slightly on the top
of the condenser until a gap of approximately 19mm exists
between the condenser and the boiler.
18. Connect the free end of the 8mm x 300mm tubing connected
to the rear boiler level control side arm, to the distillate outlet of
the front condenser (Fig. 2c).
19. Take the front Boiler Level Control WL48, remove the end
split nut and central part of the boiler plastic coupling leaving
the other split nut on, and the internal seal in the boiler level
control. Ensure the stopcock is fully closed (screwed down).
20. Take the 16mm earth spigot and place the 16mm tubing part
10
Fig 2b: Rear
Vent pipe
W4L2A
From distillate of first condenser
To drain
To boiler
level
socket
Condenser
distillate
outlet tube
Side arm
8mm Earth spigot
hose assembly
Lower drain
outlet
Water
flow
sensor
assembly
and hoses
2
1
3
WS-200AD-4 Assembly
Your Cole-Parmer Water Still WS-200AD-4 has been designed with
ease of assembly specifically in mind. Please study the installation
diagram and the enclosed DVD before commencing the installation.
Follow the sequence of instructions and do not connect the mains
electricity supply until directed.
1. From the outer packaging remove all the components including
the metal cabinet containing the glass boiler.
2. Before unpacking the individual components, identify them on
the check list below:
WS-200AD-4 Unit containing 2 boilers.
Condenser – WC48/M2 x2
Heater – W48H x2
Boiler Level Control (Front) – WL48
Boiler Level Control (Rear) – W4L2A
Funnel – WF48
Reservoir Water Level Sensor – WLS
Hose Kit – I/WH48/3/B
3. Remove the perspex viewing screen (Fig. 2, item 1) from the
unit by lifting it up using the finger recess. Remove the internal
packaging carefully. Snip the temporary ties holding the boiler
retaining springs (Item 25).
4. Remove the cabinet end plate and lid by removing the retaining
screws.
5. Withdraw the metal thermostat probe (Fig. 2, item 19) from the
glass tube inside the front boiler.
6. Remove the front boiler by releasing the retaining springs.
7. Ensure that the sealing O ring and the stabilising O ring are
correctly positioned on the vapour tube of the rear boiler
(Fig 2a).
8. Select 8mm tubing x 1m from hose kit I/WH48/3/B and connect
one end to the distillate outlet connection (Bottom) of one of
the condensers (Fig. 2a). Secure with a tie wrap.
Fig. 2a
Cooling water outlet
Distillate
Outlet
Condenser
Sealing o-ring
Vapour tube
Stabilising o-ring
Stopcock

SAFETY: It could be possible to mis-locate the heater
crimps on to the heater terminal block tags. Ensure that
the heater crimps are properly located onto the heater
terminal block tags and fully locked on. Attempt to pull
the crimps off the tags to ensure full attachment.
31. Refit the end plate and lid.
32. Move the unit to its working location. Ensure a space of at least
50cm to the right of the unit to allow access.
33. Connect the cold water supply to the mains water inlet. The
tubing selected should have a safe working pressure of at
least equal to the pressure of the water supply and should be
adequately secured with hose clips.
DO NOT TURN ON WATER SUPPLY
34. THIS EQUIPMENT MUST BE EARTHED!
Carry out the electrical installation. This should only be carried
out by a suitably qualified electrician.
The WS-200AD-4 is classed as permanently connected
equipment. The earth spigots should pass a high current (ie.
>200mA).
The equipment is supplied with 1.5m of flexible, triple
core, circular cable to the following specification:
4.0mm², to BS 6500 or equivalent and <HAR> or BASEC
approved.
Connection to the mains electrical supply should be via a
double pole 30mA Residual Current Breaker with Overcurrent
protection (RCBO) isolating circuit breaker switch with a
continuous current carrying capacity of 30A at 250V and
overcurrent of 30A.
These devices should be sited near to the equipment and clearly
marked ‘Disconnect device for Cole-Parmer Water Still’
DO NOT SWITCH ON ELECTRICAL SUPPLY.
35. Connect the reservoir water level sensor WLS (Fig. 2, item
14) to the WS-200AD-4 and secure with a tie wrap. Place the
glass pressure bell in the collection reservoir, following the
instructions given on page 19.
36. Operate the WS-200AD-4 Waterstill as per Operating
Instructions and check for leaks.
37. Fit the Perspex viewing screen.
11
Fig. 2d
PCB
Thermostat
(Rear)
Thermostat
(Front)
Relay
Relay
of it into a beaker of hot water for approximately 20 – 30
seconds; this will make the tubing more supple. Connect the
16mm tubing to the front boiler level control drain connection
(below the stopcock). Secure with a tie wrap.
21. Take the 1m length of 16mm hose from hose kit I/WH48/3/B.
Place one end into a beaker of hot water for approximately
20 – 30 seconds. Thread the tube through the hole (Fig. 2, item
18) until approximately 300mm of tubing is inside the cabinet.
Connect to the 16mm earth spigot and secure with a tie wrap.
22. Pull the 16mm hose back out of the cabinet until a gap of
approximately 5mm exists between the boiler level control and
the boiler connection.
23. Place the boiler plastic coupling split nut and central part onto
the boiler connection. Connect the boiler level control to
the boiler, ensuring that the internal seal of the boiler plastic
coupling is fitted inside the boiler connection and the boiler
level control connection. Tighten the boiler plastic coupling.
24. Locate the tube assemblies inside the cabinet and connect the
numbered connectors as follows:
1 – Bottom connection of rear condenser.
2 – Bottom connection of front condenser.
3 – Top connection of rear condenser.
4 – Top connection of front condenser.
5 – Front Boiler Level Control.
25. Pass the remaining length of 8mm tubing through hole (Fig. 2,
item 17).
26. Loosen the black cap on the boiler level control. Fit the funnel
into the top of the boiler level control and tighten the black
cap.
27. Remove the heater black cap and rubber ring from the rear
boiler. Place the black cap onto one of the heaters until it is
approximately 25mm from the electrical connectors end. Push
the rubber ring onto the heater and into the black cap.
28. Fit the heater into the boiler and screw on the black cap. When
the black cap is tight push the heater through the black cap
until the end of the heater sits in the nodule at the end of the
boiler.
Do not overtighten the screw caps as this may cause the
boiler to break, or push the heaters in too far as this may
break the nodule.
29. Repeat steps 27 & 28 for front heater.
30. Pass the electrical cables of the heaters up into the electrical
control compartment via the two orifices. Push the spade
connections onto the heater terminal block. Brown to Brown,
Blue to Blue (Fig. 2d).
Distillate
Vent
pipe
To W4L2A
level control
WL48
To drain
Fig. 2c
Front
To drain
Water flow
sensor
assembly
Stopcock
16mm Earth spigot
hose assembly
Outlet of
level control
4
2
1
5
WBC1
3
NE
L
Heater
lead
(front)
Heater
Terminal
Blocks
Heater lead (back)

12
Rotaflow Stopcock
3
I/A4000DHK/1
I/A4000DHK/2
I/WH48/3/B
Solenoid
Boiler
Level
Control
Rotaflo Stopcock
1
2
5
Water Flow Switch
A4000D Installation Diagram
Mains Water
Inlet Mini
Valve
Electrics
Reservoir
Water Level
Sensor
8mm Earth Spigot
8mm Earth Spigot
16mm Earth Spigot
To Distillate
Reservoir
To Drain
4
To Drain
16mm tubing x 1m - I/WH48/3/B
To Boiler
Level Socket
Funnel
Heater
Thermostat and
Thermostat Glass
Second Stage
Boiler Level Control
Front
Boiler
Rear
Boiler
I/WH48/3/B
8mm tubing x 1m - I/WH48/3/B
Restrictor
The following instructions apply to the WS-200AD-4 Water Still
where the water feed to the boiler is via the mains supply or a
header tank.
1. Before switching on either the mains electricity or water supply,
identify the control switches and indicator lights on the front of
the cabinet.
Green Light – When illuminated this shows that there is mains
supply voltage to the unit. Under no circumstances should the
cabinet end-panel be removed when this light is illuminated.
White ‘On/Off’ Switch – This is the primary switch for
controlling water and electricity inside the still. The switch
illuminates when pressed in the ON position.
Amber Light – When illuminated, this indicates that the
distillate collection reservoir is full as detected by the level
control.
White ‘Clean’ Light – This shuts off the heating element
but allows water to flow into the boiler when the still is being
commissioned or cleaned. When pressed in the CLEAN position
the switch illuminates.
2. Carefully check the following:
The appropriate electricity, water and drain services have been
provided. If in doubt, consult the LOCATION & SERVICES
SECTION of this manual.
The ON/OFF switch on the control panel is in the OFF position.
WS-200AD-4 Operation The CLEAN switch is pressed in the ON position.
The stopcocks on the front and rear boiler level controls are
closed.
The float switch on the rear boiler level control W4L2A is set at
the factory. However, check that this has not been disturbed
during transit. A rough check is that the distance from the top
of the large screw cap of the W4L2A to the top of the glass
guide tube should be approximately 15-20mm (Fig 2e).
Fig 2e
To boiler level
socket
Guide
tube
Float switch
Distillate feed
from front still To drain
15 - 20mm
Hose
assembly 2
WS-200AD-4 Installation Diagram

13
The reservoir water level sensor is fitted to the distillate
collection vessel.
The dummy shorting plug is fitted to the boiler level control DIN
socket on the cabinet.
3. Ensure all earth leads are connected to the earth point.
4. Check all glassware for any damage.
5. Switch on the electricity supply – the green light illuminates.
6. Press the ON/OFF switch to the ON position – the switch will
illuminate.
7. Recheck that the CLEAN switch is in the ON position and
illuminated.
8. Turn on the mains water supply and using the mini valve
assembly, adjust the flow rate to approximately 2 litre/min.
This can be achieved by observing the drain water from the
boiler level control and adjusting the mini valve assembly
accordingly.
9. Check for water leaks.
10. Observe that the front boiler is now filling with water to cover
the heating elements. When the water has reached the pre-set
limit, the excess will discharge to drain. Check the water drains
freely and does not back up into the boiler level control.
11. Switch the CLEAN button off by pressing it a second time. The
switch light goes out.
The heater on the front boiler will now warm up and eventually
run at a red glow. After a short time distilled water will emerge
from the outlet pipe. This should feed into the empty rear boiler
via the rear boiler level control WL42A.
12. Allow the rear boiler to fill with single distilled water (for
approximately 20 – 30 minutes), keeping an eye on the level.
Note that the heater of the second stage only comes on when
the level of single distilled water in the rear boiler is at about
the equator. It may be necessary to adjust the level of the float
switch of the rear boiler level control (WL42A) to achieve this
condition.
Lifting the guide tube increases the level at which the heating
element will switch on.
Lowering the guide tube decreases the level at which the
element will switch on.
Double distilled water ultimately flows from outlet pipe (Fig.
2, item 15). This should fall away from the still with no kinks,
restrictions or U bends.
13. To avoid excess wastage of coolant water, make further
adjustments to the mini valve assembly. Slowly reduce the flow
rate until the flow control switch switches off the heater, then
increase the flow until the power is restored.
14. Safety Cut-Outs – All Cole-Parmer Water Stills are protected
by the following safety devices.
Flow Control Switch – Monitors the flow of coolant water
into the still and shuts off the heating element if the flow is
insufficient.
Thermostat Cut-Out – In normal operation the water within
the glass will be at 100°C. In single fault conditions, i.e. in
the event of water supply failure, the content will increase to
112°C where upon a resettable thermostat will operate. Once
switched, the thermostat has to be manually reset. This is
achieved by unscrewing the black knob located inside the
cabinet and pressing the reset button.
Reservoir Control – Is positioned on the collection reservoir
and switches off both the electricity and water supplies when
the reservoir is full of distillate water. The water supply is shut
off around 7 minutes after the reservoir is full to allow the
heating element to cool.
It is recommended that the operation of the flow switch and
reservoir control is checked on a regular basis.
a. Simulation of Mains Water Supply Failure
Turn off the mains water supply at the tap. This should switch
off the heating element. Turning the tap on again will switch
the heater on.
b. Simulation of Reservoir Full Condition
Lower the glass pressure bell of the reservoir water level sensor
into the distillate to a depth of 150mm. This will switch off the
heating element immediately and the cooling water after 7
minutes. Raising the bell will cause both to be re-supplied.
16. Switching Off – Push the CLEAN switch to the ON position.
Wait until the residual heat contained in the heating element
has dispersed and no boiling is evident. Turn off water supply.
Push ON/OFF switch to OFF position. Isolate from mains
electricity supply.
WS-200AD-4 Spares
Boiler WB4
Funnel WF48
Condenser WC48/M2
‘Mains On’ Green Indicator 700691(S)
‘On/Off’ White Switch 700988(S)
‘Reservoir Full’ Amber Indicator 700987
‘Clean’ White Switch 700988(S)
Reservoir Pressure Switch WPS
Heater Terminal Block A4000/HTB
Solenoid Assembly A4000/SA
Water Flow Sensor Assembly and Hoses I/A4000DHK/1
Reservoir Water Level Sensor WLS
Mains Water Mini Valve Assembly 7001059(S)
Thermostat Glass Tube WTT48
Thermostat WT4
Boiler Level Control (Front) WL48
Boiler Level Control (Rear) W4L2A
Boiler Plastic Coupling WBC1
Heater Assembly A4000/HA
Heater Assembly 220V A4000/HA220
Boiler Retaining Spring 700007
Condenser to Boiler Level Control Assembly I/A4000DHK/2
w stopcock Assembly A4000/RCOCK
Relay Assembly A4000/RA
PCB 700804(ES)
6 Way Electrical Terminal Block A4000/ETB
Ceramic Terminal Block A4000/CTB
5 DIN Socket Assembly A4000/DIN
Boiler Vapour Tube Sealing O Ring I/M502
Boiler Vapour Tube Stabilising O Ring I/QR38/24
4 DIN Socket Assembly A4000D/DIN
Distillate Output and Boiler Level
Control Drain Hose Kit I/WH48/3/B
Black Phenolic Screw Cap I/QC38/25

14
Item Description Catalogue
no. number
1 Perspex Screen M484
2 Boiler WB8
3 Funnel WF48
4 Condenser (2 off) WC48/M2
5 Wall Bracket M510G
6 Green ‘Mains On’ Indicator 700691(S)
7 White 'On/Off' Switch 700988(S)
8 Amber ‘Reservoir Full’ Indicator 700987
9 White ‘Clean’ Switch 700988(S)
10 Reservoir Pressure Switch WPS
11 Terminal Strip for Heaters A4000/HTB
12 Water Flow Sensor Assembly I/A8000HK/1
13 Solenoid Assembly A4000/SA
Item Description Catalogue
no. number
14 Mains Water Inlet Valve Assembly 7001059(S)
15 Reservoir Water Level Sensor WLS
16 Distillate Outlet Pipe (Bench Mounted) –
17 Cooling Water Pipe to Drain (8mm) –
18 Cooling Water Pipe to Drain (16mm) –
19 Thermostat WT8
20 Heater Assembly (2 Required) A4000/HA
21 stopcock A4000/RCOCK
22 Distillate Outlet Pipe (Wall Mounted) –
23 Boiler Level Control WL48
24 Boiler Plastic Coupling WBC1
25 Retaining Springs 7000007
List of Major Components – WS-200A-8
25 24 23 22 20
18
17
16
15
13
12
10
9
8
7
6
5
4
3
2
1
19
14
21
11
Lid
End
Plate
Fig. 3
WS-200A-8

15
Your Cole-Parmer Water Still WS-200A-8 has been designed with
ease of assembly specifically in mind. Please study the installation
diagram and the enclosed DVD before commencing the
installation. Follow the sequence of instructions and do not
connect the mains electricity supply until directed.
1. From the outer packaging remove all the components
including the metal cabinet containing the glass boiler.
2. Before unpacking the individual components, identify them on
the check list below:
WS-200A-8 Unit containing boiler.
Condenser – WC48/M2 x2
Heater – W48H x2
Boiler Level Control – WL48
Funnel – WF48
Reservoir Water Level Sensor – WLS
Hose Kit – I/WH48/2/B
Wall Mounting Bracket – M510G
3. Remove the perspex viewing screen (Fig. 3, item 1) from the
unit by lifting it up using the finger recess. Remove the
internal packaging carefully. Snip the temporary ties holding
the boiler retaining springs (Item 25).
4. Remove the cabinet end plate and lid by removing the
retaining screws.
5. Ensure that the sealing O rings and the stabilising O rings are
correctly positioned on the vapour tubes of the boiler.
6. Fit one of the condensers (Fig. 3, item 4) to the left hand
vapour tube ensuring that the distillate outlet faces the front
and the two water connections are parallel to the unit. When
slight resistance is felt when fitting the condenser, press down
slightly on the top of the condenser until a gap of
approximately 19mm exists between the condenser and the
boiler (Fig. 3a).
7. Looking inside the cabinet, identify the vinyl tubing assemblies
fitted with numbered screw thread connectors. Make the
following connections:
WS-200A-8 Assembly Connect number 2 to the lower water inlet of the condenser.
Connect number 4 to the upper water outlet of the condenser
(Fig. 3b).
8. Fit the second condenser (Fig. 3, item 4) to the right hand
vapour tube ensuring that the distillate outlet faces the front
and the two water connections are parallel to the unit. When
slight resistance is felt when fitting the condenser, press down
slightly on the top of the condenser until a gap of
approximately 19mm exists between the condenser and the
boiler.
9. Looking inside the cabinet, identify the vinyl tubing assemblies
fitted with numbered screw thread connectors. Make the
following connections:
Connect number 1 to the lower water inlet of the condenser.
Connect number 3 to the upper water outlet of the condenser
(Fig. 3b).
10. From the hose kit I/WH48/2/B take the 1m length of 8mm
tubing fitted with the T piece.
11. Connect the 180mm length of tubing from the T piece to the
distillate outlet of the condenser on the left hand side. Secure
with a tie wrap.
12. Connect the 100mm length of tubing from the T piece to the
distillate outlet of the condenser on the right hand side.
Secure with a tie wrap.
13. Pass the free end of the tubing through:
The cabinet base (Fig. 3, item 22) if wall mounted.
The cabinet side (Fig. 3, item 16) if bench mounted.
14. Take the boiler level control WL48 (Fig. 3, item 23). Remove
the end split nut and central part of the boiler plastic coupling
(Item 24) leaving the other split nut on, and the internal seal
in the boiler level control. Ensure the stopcock is fully closed
(screwed down).
15. Take the 16mm earth spigot and place the 16mm tubing part
of it into a beaker of hot water for approximately 20 – 30
seconds; this will make the tubing more supple. Connect the
16mm tubing to the boiler level control (Item 23) drain
connection (below the stopcock). Secure with a tie wrap.
16. Take the 1m length of 16mm hose from hose kit I/WH48/2/B.
Place one end into a beaker of hot water for approximately 20
– 30 seconds. Thread the tube through hole (Fig. 3, item 18)
until approximately 300mm of tubing is inside the cabinet.
Connect to the 16mm earth spigot and secure with a tie
wrap.
17. Pull the 16mm hose back out of the cabinet until a gap of
Fig. 3a
Cooling water outlet
Distillate
Outlet
Condenser
Sealing o-ring
Vapour tube
Stabilising o-ring
1
2
4
3
5
Fig. 3b

28. THIS EQUIPMENT MUST BE EARTHED!
Carry out the electrical installation. This should only be carried
out by a suitably qualified electrician.
The WS-200A-8 is classed as permanently connected
equipment. The earth spigots should pass a high current (ie.
>200mA).
The equipment is supplied with 1.5m of flexible, triple core,
circular cable to the following specification:
4.0mm², to BS 6500 or equivalent and <HAR> or BASEC
approved.
Connection to the mains electrical supply should be via a
double pole 30mA Residual Current Breaker with Overcurrent
protection (RCBO) isolating circuit breaker switch with a
continuous current carrying capacity of 30A at 250V and
overcurrent of 30A.
These devices should be sited near to the equipment and
clearly marked ‘Disconnect device for Cole-Parmer Water Still’
DO NOT SWITCH ON ELECTRICAL SUPPLY.
29. Connect the reservoir water level sensor WLS (Fig. 3, item 15)
to the WS-200A-8 and secure with a tie wrap. Place the glass
pressure bell in the collection reservoir, following the
instructions given on page 19.
30. Operate the WS-200A-8 Waterstill as per Operating
Instructions and check for leaks.
31. Fit the Perspex viewing screen.
16
approximately 5mm exists between the boiler level control and
the boiler connection.
18. Place the boiler plastic coupling split nut and central part onto
the boiler connection. Connect the boiler level control to the
boiler, ensuring that the internal seal of the boiler plastic
coupling is fitted inside the boiler connection and the boiler
level control connection. Tighten the boiler plastic coupling.
19. Loosen the black cap on the boiler level control. Fit the funnel
into the top of the boiler level control and tighten the black
cap.
20. Connect the tubing connector number 5 to the boiler level
control (Fig 3b).
21. Take the remaining length of 8mm tubing from the 8mm
earth spigot and feed through the hole (Fig. 3, item 17).
22. Unscrew the two black plastic screw caps and rubber rings
from the boiler. Place the black caps onto the heaters until
they are approximately 25mm from the electrical connectors
end. Push the rubber ring onto the heaters and into the black
cap.
23. Fit the heaters into the boiler and screw on the black caps.
When the black caps are tight push the heaters through the
black caps until the end of the heaters sit in the nodules at the
end of the boiler.
Do not overtighten the screw caps as this may cause the
boiler to break, or push the heaters in too far as this
may break the nodule.
24. Thread the four heater connectors through the holes into the
electrical control compartment and connect to the heater
terminal blocks. Brown to Brown, Blue to Blue (Fig. 3c).
SAFETY: It could be possible to mis-locate the heater
crimps on to the heater terminal block tags. Ensure that
the heater crimps are properly located onto the heater
terminal block tags and fully locked on. Attempt to pull
the crimps off the tags to ensure full attachment.
25. Refit the end plate and lid.
26. Move the unit to its working location. If it is to be wall
mounted use the mounting bracket Fig. 3 (Item 5). Ensure a
space of at least 50cm to the right of the unit to allow access.
27. Connect the cold water supply to the mains water inlet. The
tubing selected should have a safe working pressure of at least
equal to the pressure of the water supply and should be
adequately secured with hose clips.
DO NOT TURN ON WATER SUPPLY
Fig. 3c
PCB
Thermostat
Relay
Relay
NE
L
Heater
lead
(front)
Heater lead (back)
Heater
Terminal
Blocks

17
I/A8000HK/1
I/A8000HK/2
I/WH48/2/B
16mm tubing x 1m - I/WH48/2/B
Solenoid
Condensers
Thermostat &
Thermostat Glass
Heaters
Boiler
Level
Control
Funnel
Rotaflo Stopcock
1
2
4
3
5
Water Flow Switch
Restrictor
Mains Water
Inlet Mini
Valve
Electrics
Reservoir
Water Level
Sensor
8mm Earth Spigot
16mm Earth Spigot
To Distillate
Reservoir
To Drain
To Drain
Boiler
WS-200A-8 Operation
The following instructions apply to the WS-200A-8 Water Still
where the water feed to the boiler is via the mains supply, or a
header tank.
1. Before switching on either the mains electricity or water
supply, identify the control switches and indicator lights on
the front of the cabinet.
Green Light – When illuminated this shows that there is
mains supply voltage to the unit. Under no circumstances
should the cabinet end-panel be removed when this light is
illuminated.
White ‘On/Off’ Switch – This is the primary switch for
controlling water and electricity inside the still. The switch
illuminates when pressed in the ON position.
Amber Light – When illuminated, this indicates that the
distillate collection reservoir is full as detected by the level
control.
White ‘Clean’ Light – This shuts off the heating element but
allows water to flow into the boiler when the still is being
commissioned or cleaned. When pressed in the CLEAN
position the switch illuminates.
2. Carefully check the following:
The appropriate electricity, water and drain services have been
provided. If in doubt, consult the LOCATION & SERVICES
SECTION of this manual.
The ON/OFF switch on the control panel is in the OFF position.
The CLEAN switch is pressed in the CLEAN position.
The stopcock on the front boiler level control is closed.
The reservoir water level sensor is fitted to the distillate
collection vessel.
The dummy shorting plug is fitted to the boiler level control
DIN socket on the cabinet.
3. Ensure all earth leads are connected to the earth point.
4. Check all glassware for any damage.
5. Switch on the electricity supply – the green light illuminates.
6. Press the ON/OFF switch to the ON position – the switch will
illuminate.
7. Recheck that the CLEAN switch is in the CLEAN position and
illuminated.
8. Turn on the mains water supply and using the mini valve
assembly, adjust the flow rate to approximately 2 litres/min.
This can be achieved by observing the drain water from the
boiler level control and adjusting the mini valve assembly
accordingly.
9. Check for water leaks.
WS-200A-8 Installation Diagram

18
10. Observe the boiler now filling with water to cover the heating
elements. When water has reached the pre-set limit, the
excess will discharge to drain. Check the water drains freely
and does not back up into the boiler level control.
11. Switch the CLEAN button off by pressing it a second time. The
switch light goes out.
12. The heaters will now warm up and eventually run at a red
glow. If the flow rate is insufficient, the heaters will not switch
on. This will require adjustment of the mini valve assembly to
be opened further. After about 2 – 3 minutes of operation
distilled water will emerge from the outlet pipe falling into the
collection reservoir.
13. To avoid excess wastage of coolant water, make further
adjustments to the mini valve assembly. Slowly reduce the
flow rate until the flow control switch switches off the
heaters, then increase the flow until the power is restored.
14. Refit the Perspex screen.
15. Safety Cut-Outs – All Cole-Parmer Water Stills are protected
by the following safety devices.
Flow Control Switch – Monitors the flow of coolant water
into the still and shuts off the heating element if the flow is
insufficient.
Thermostat Cut-Out – In normal operation the water within
the glass will be at 100°C. In single fault conditions, i.e. in the
event of water supply failure, the content will increase to
112°C where upon a resettable thermostat will operate. Once
switched, the thermostat has to be manually reset. This is
achieved by unscrewing the black knob located inside the
cabinet and pressing the reset button.
Reservoir Control – Is positioned on the collection reservoir
and switches off both the electricity and water supplies when
the reservoir is full of distillate water. The water supply is shut
off around 7 minutes after the reservoir is full to allow the
heating element to cool.
It is recommended that the operation of the flow switch and
reservoir control is checked on a regular basis.
a. Simulation of Mains Water Supply Failure
Turn off the mains water supply at the tap. This should switch
off the heating element. Turning the tap on again will switch
the heater on.
b. Simulation of Reservoir Full Condition
Lower the glass pressure bell of the reservoir water level
sensor into the distillate to a depth of 150mm. This will switch
off the heating element immediately and the cooling water
after 7 minutes. Raising the bell will cause both to be
re-supplied.
16. Switching Off – Push the CLEAN switch to the ON position.
Wait until the residual heat contained in the heating element
has dispersed and no boiling is evident. Turn off water supply.
Push ON/OFF switch to OFF position. Isolate from mains
electricity supply.
WS-200A-8 Spares
Boiler WB8
Funnel WF48
Condenser WC48/M2
‘Mains On’ Green Indicator 700691(S)
‘On/Off’ White Switch 700988(S)
‘Reservoir Full’ Amber Indicator 700987
‘Clean’ White Switch 700988(S)
Reservoir Pressure Switch WPS
Heater Terminal Block A4000/HTB
Solenoid Assembly A4000/SA
Water Flow Sensor Assembly and Hoses I/A8000HK/1
Condenser to Boiler Level Control Hose Assembly I/A8000HK/2
Reservoir Water Level Sensor WLS
Mains Water Mini Valve Assembly 7001059(S)
Thermostat Glass Tube WTT48
Thermostat WT8
Boiler Level Control WL48
Boiler Plastic Coupling WBC1
Heater Assembly A4000/HA
Heater Assembly 220V A4000/HA220
Boiler Retaining Spring 700007
Distillate Output and Boiler Level Control
Drain Hose Kit I/WH48/2/B
w Stopcock Assembly A4000/RCOCK
Relay Assembly A4000/RA
PCB 700804(ES)
6 Way Electrical Terminal Block A4000/ETB
Ceramic Terminal Block A4000/CTB
5 DIN Socket Assembly A4000/DIN
Boiler Vapour Tube Sealing O Ring I/M502
Boiler Vapour Tube Stabilising O Ring I/QR38/24
Black Phenolic Screw Cap I/QC38/25
Wall Mounting Bracket M510G

Each Cole-Parmer Water Still is supplied with a Reservoir Water
Level Sensor (WLS).
This automatically switches off the heating
elements and coolant water supply when
the distillate collection reservoir is filled
with distilled water.
Note that the control is fitted with a ‘delay
timer’ which switches off the coolant
water supply approximately 7 minutes after
the heating elements. This is to allow time
for the heaters to cool and for boiling to
cease.
The control also automatically switches on
the heating elements and coolant water
supply when the level of distillate in the
collection reservoir falls.
It is possible to fit the glass pressure bell of
the control to most types of reservoir and
container by means of a metal clip WFC/1
which is provided with the Reservoir Water
Level Sensor Assembly (WLS).
Alternatively, Antylia Scientific offer a purpose
designed reservoir collection system WR20 fitted with a special
adapter to hold the bell.
Fitting the Reservoir Control WLS to Collection Vessels
1. Position the distillate collection reservoir in a suitable location.
This should be below the Water Still so that the vinyl rubber
tubing transporting the distilled water from the still can fall
down to the reservoir without restrictions, kinks or U bends.
2. Take the Reservoir Water Level Sensor WLS and connect the
free end of the rubber tubing to the nozzle of the pressure
switch located on the side of the Cole-Parmer Water Still
cabinet. Secure with a tie wrap.
3. Use the metal clip to fit the glass pressure bell inside the
distillate collection reservoir.
4. Position the bell so that the open end is 140mm below the
desired distillate level.
Antylia Scientific offer a purpose designed reservoir system for the
collection of distilled water from your Cole-Parmer Water Still.
WR20 – A 20 litre glass reservoir complete with stopcock and
special lid.
WS20 – Reservoir stand, 43cm high for use with WR20.
The lid of the reservoir has a side arm for connection to the
distillate feed from the Cole-Parmer Water Still and a vent fitted
with a bacteriological filter to maintain the purity of the water. A
screw thread fitting is also provided to support the Reservoir
Water Level Sensor (WLS).
Location & Assembly
1. Locate the reservoir in a position which is below the level of
the Water Still.
2. Fit the drain cock to the lower ground glass socket of the
reservoir and secure with the plastic joint clip.
3. Take the bacteriological filter and connect this to the top of
the glass feed-pipe using the vinyl tubing provided. Fit the
feed pipe and filter into the reservoir lid via the large screw
cap fitting.
4. Fit the Reservoir Water Level Sensor (WLS) to the lid via the
small screw cap fitting. Note that the system of the glass
pressure bell should extend approximately 50mm above the
screw cap.
5. Place the assembled lid into the socket of the reservoir.
6. Take the rubber tubing from the Reservoir Water Level Sensor
(WLS) and connect to the small plastic nozzle on the side of
the Cole-Parmer Water Still cabinet.
7. Take the vinyl plastic tubing from the distillate outlet of the
Water Still and connect to the side arm of the feed pipe on
the reservoir lid. Ensure that the tubing falls down to the
reservoir without any restrictions, kinks or U bends.
Distillate Collection
& Reservoir System
WR20 & WS20
Reservoir System
To pressure switch
Water Still
Distillate
from
Water Still
50mm
Reservoir
water
level sensor
WR20
WR20
Reservoir
stand
19
140mm
Metal
Clip
Reservoir
Water
Level
Sensor
Nozzle of
Pressure
Switch

Connection of stills to deionised
and pre-treated water supplies
Many laboratories prefer to feed their Water Stills with deionised
or pre-treated water to obviate the need for boiler cleaning and
descaling.
Your new Cole-Parmer Water Still can be easily converted to a
deionised water feed by use of a simple accessory – the Water
Feed Conversion Kit, Part No A4000/WCK (WS-200A-4) or
A4000D/WCK (WS-200AD-4 & WS-200A-8). This kit permits the
still to operate with most types of deioniser and also piped
supplies of pre-treated water.
The sequence of operations to fit the kit is detailed below and
should be used in conjunction with the instructional video which
accompanies the kit. The video is also accessible on You Tube
(www.youtube.com/c/ColeParmerEssentials) or www.coleparmer.
com.
A4000/WCK
A4000D/WCK
Float Switch
Assembly
(I/WCK/01(E))
Jubilee Clip
(700198)
Earthed Pipe
Deioniser Kit
(I/WCK/02)
WS-200A-4
1. Ensure the unit is isolated from the mains.
2. Remove the perspex viewing screen, cabinet roof and cabinet
end panel.
3. Lift out the front switch panel from the cabinet groove by
unscrewing the countersunk screw at the top of the panel.
This will allow better access to the plumbing system.
4. Unscrew the tubing connector marked ‘3’ from the boiler
level control as shown in the WS-200A-4 Installation Diagram
on page 6.
5. Connect the splice (Sannar-004) to the tubing connector
marked ‘3’ disconnected in step 4.
6. Connect tubing assembly (I/WCK/05) to the other end of the
splice in step 5.
7. Thread the earth cable from tubing assembly (I/WCK/05)
through the access hole in bottom of the electrical
compartment and connect to the main earth point.
8. Thread the tubing from tubing assembly (I/WCK/05) through
the last hole on the side of the cabinet to the drain.
9. Take tubing assembly (I/WCK/02) and connect to the
deionised / pre-treated water solenoid, and secure with a
jubilee clip.
10. Connect the other end of the tubing assembly (I/WCK/02) to
the boiler level control.
11. Thread the earth cable from tubing assembly (I/WCK/02)
through the access hole in bottom of the electrical
compartment and connect to the main earth point.
12. Unscrew the black cap from the boiler level control and
remove the funnel and seal.
13. Fit the boiler level control black cap over the float switch
assembly (I/WCK/01(E)) and fit to the boiler level control
ensuring that the end of the guide tube locates in the well at
the base.
14. Remove the dummy plug from the DIN connector and
connect the float switch assembly connector.
15. Remove the dummy cap from the deionised / pre-treated
water inlet and fit the straight hose connector (700408).
16. Connect the straight hose connector (700408) to the outlet
of the deionised / pre-treated water supply. Note the tubing
selected should have a safe working pressure of at least equal
to the pressure of the water supply and should be
adequately secured with hose clips.
17. Refit the front switch panel.
18. Refit the perspex viewing screen, cabinet side panel and
cabinet roof.
WS-200AD-4
1. Ensure the unit is isolated from the mains.
2. Remove the perspex viewing screen, cabinet roof and cabinet
end panel.
3. Lift out the front switch panel from the cabinet groove by
unscrewing the countersunk screw at the top of the panel.
This will allow better access to the plumbing system.
4. Unscrew the tubing connector marked ‘5’ from the boiler
level control as shown in the WS-200AD-4 Installation
Diagram on page 12.
5. Connect the plug (Sannar-002) to the tubing connector
marked ‘5’ disconnected in step 4.
6. Take tubing assembly (I/WCK/02) and connect to the
deionised / pre-treated water solenoid, and secure with a
jubilee clip.
20
Plug
(Sannar-002)
Straight
Connector
(700408)
Earthed Pipe
Deioniser Kit
(I/WCK/02)
Tubing
Assembly
(I/WCK/05)
Float Switch
Assembly
(I/WCK/01(E))
Jubilee Clip
(700198)
Splice
(Sannar-004)
Straight
Connector
(700408)