Gerhardt Vapodest 20 User manual

Please read this instruction manual with care before you start operating the
system
Pleaseobservethesafetyinstructionsofthismanual,markedwith inorderto
avoidany dangerous handling!
Vap20
Orderno.: 7620
e5020/95 03.Jan.2006
InstructionManual
Vapodest 20

C. Gerhardt GmbH & Co. KG
2
VAPODEST20
Contents
Safety .......................................................................................... 3
Application as directed ................................................................ 3
Safety instructions ....................................................................... 3
1 Technical description........................................................ 4
Warranty conditions..................................................................... 4
Technical data ............................................................................. 4
Operating conditions................................................................... 5
2 Description of the system................................................. 6
Front view..................................................................................... 6
Rear view ..................................................................................... 8
3 Delivery............................................................................. 10
Check for transport damage ..................................................... 10
Parts list..................................................................................... 10
4 Assembly and installation................................................11
Setup ..........................................................................................11
Setting into operation ................................................................ 12
5 Programming the system............................................... 14
Keyboard ................................................................................... 14
Programming the Vapodest 20 ................................................. 17
On-line mode............................................................................. 19
6 Operation ......................................................................... 21
Safety instructions ..................................................................... 21
Priming the system ................................................................... 21
Test run ...................................................................................... 22
Distilling a sample .................................................................... 23
7 Error messages .............................................................. 24
8 Maintenance .................................................................... 26
Tubing diagram ......................................................................... 26
Spare parts and accessories.................................................... 28
Service and cleaning ................................................................. 30
Trouble shooting ....................................................................... 30
Disposal .................................................................................... 31

C. Gerhardt GmbH & Co. KG 3
Safety
Application as directed
Withthe Vapodest20 you havepurchased anautomaticdistillati-
on system for the steam distillation of Kjeldahl digestions and
associated distillations. Automatic NaOH addition.
Safetyinstructions
Make sure that no liquid gets into contact with cable connections
or the interior of the electrical parts of the unit!
Danger of electrical shock!
For repairs on electrical, electronic or mechanical parts please
alwayscontactyour agent’s service. Dont’t dorepairs by yourself!
Alwaysswitch off the apparatusat themainsandpull out theplug
before opening! Danger of electrical shock!
The Vapodest 20 must not be run in damp or hazardous location.
The maximum humidity allowed is 80 %, the maximum ambient
temperature must not exceed 40 °C!
The apparatus must not be exposed to aggressive vapours of
acids, alkalies or solvents.
The apparatus must be used according to this instruction manu-
al. It is not allowed to supply changes to the apparatus in order to
modify its application.
The instrument must be operated by a skilled or specially trained
staff!
SAFETY

C. Gerhardt GmbH & Co. KG
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VAPODEST20
1 Technicaldescription
Warrantyconditions
The Vapodest 20 is manufactured following the high quality gui-
delines of DIN EN ISO 9001.
On the basis of the C. Gerhardt conditions of warranty our pro-
ducts are guaranteedfor1 year, aslongas the apparatus isused
in accordance with the instructions mentioned in this manual.
Please note that the semi-consumable parts are excluded from
warranty.
Technical data
Voltage: .................... 230V AC,50Hz
Wattage: ................... 1600W
Cooling water: .......... about 3 litre per distillation minute
Cooling water
pressure .................. > 0,5 bar
Pumpcapacity:
-Diaphragm pump ... about 15 ml/s with water
about 10 ml/s with NaOH
-Peristaltic pump ..... about 10 ml/s with water
Storetank: ................ anysize, recommended:KAN20
Microcontroller: ........ Single-chip MCU
Display: .................... 5 x 7 LED
Program: .................. 1
Interface: .................. RS 485
Dimensions: ............ 440 x 690 x 340 mm(W x H x D)
Weight: ..................... 25 kg
Baud-rate: ................ 9600
Data-bits:.................. 8
Parity: ....................... No
Startbit: .................... 1
Stopbit: .................... 1
Mode:........................ Semi-Duplex
User: ........................ Maximum 32
Connection:.............. D-Sub 9-pin acc. to DIN 41 652
Warranty
Distillation
System
Interface

C. Gerhardt GmbH & Co. KG 5
Pin-assignment:....... 1 – shield
........ 2 – N/C
........ 3–Bdriver-Out/receiver-In
........ 4 – N/C
........ 5 – GND
........ 6 – VCC
........ 7 – N/C
........ 8–Adriver-Out/receiver-In
........ 9 – N/C
Operating conditions
Vapodest distillation systems can be run under normal laborato-
ryconditions.
For the connection to the tap (cold water) a fixed connection with
1/2 inch thread is needed.
TECHNICALDESCRIPTION
Pin-assignment

C. Gerhardt GmbH & Co. KG
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VAPODEST20
2 Descriptionofthesystem
Frontview
Structuralcomponentsand parts:
1.... Quickclamping device withwedge
2.... Kjeldathermdigestion tube, 250/100mlor flask,
500/750ml, with enlargedneckor KDD 400/800
3.... Holder for steam inlettubing
4.... PTFE-inlettubing, steam
5.... Viton-cone,macro or micro
6.... Clampingfor glassware
7.... Screw cap GL 18 with silicone seal
8.... PTFE-inlettubing, NaOH
9.... PP-distributorwith PP-threaded joint
10.... Distributionhead, glass
11.... Screw cap GL 32 with silicone seal
12.... Distillationcondenser
13.... Screwcap GL 14withplastic screw connection
14.... Display
15.... Keyboard,chemical-resistant
16.... Mainsswitch, green, illuminated
17.... Ventilationvalve
18.... Distillateoutlet tubing, silicone8/12 mm
19.... Erlenmeyerflask
20.... Platform
21.... Driptray
**.... Plexiglass protection door, top(notillustrated)
**.... Plexiglass protection door, bottom(notillustrated)
**.... New, plexiglass protection door,single(not illustrated)

C. Gerhardt GmbH & Co. KG 7
Fig.2.1:Front view Vapodest 20
DESCRIPTIONOFTHESYSTEM
S t e a m
N a O H
-
O n - l i n e R e s e t
P r o g R u n
+
T i m e
S t e p
V a p o d e s t
1 0
1
2
3
4
5
6
7
8
9
10
1211 13
16
17
18
19
20
21
14
15

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VAPODEST20
Rearview
Descriptionof the connections:
1.... Diaphragmpump for H
2
Osteam generator:
Connection pipe forPVC-tubing 4/7 mm
2.... Leveldetector:
Connectionsocket for diodeplug,3-pin
(level detector for set of tanks KAN 20)
3.... Mains cable with applianceplug
4.... Excesscurrent switch, 10A
Cutsoff in caseofexcessive current consumption
5.... RS485 interface
6.... Outletventilation tubing
7.... Excesspressure - steamoutlet
8.... Excesstemperature fuse
9.... Cooling water inlet withsieve:
Connectionthread3/4 inch for water inlettubing 10/17 mm
10.... Wateroutlet:
Connectionpipe for PVC-tubing 8/12mm
11.... Diaphragmpump for NaOH:
Connectionpipe for PVC-tubing 8/12mm

C. Gerhardt GmbH & Co. KG 9
A t t e n t i o n
B e f o r e o p e n i n g t h e a p p a r a t u s
p u l l o u t m a i n s p l u g !
E x c e s s t e m p e r a t u r e - s a f e t y d e v i c e
O v e r p r e s s u r e - s t e a m o u t l e t
P u m p f o r H
2
O
s t e a m g e n e r a t o r
o o l i n g w a t e r i n l e t
w i t h f i l t e r
W a t e r o u t l e t
L e v e l d e t e c t o r
P u m p f o r N a O H
1
0
M a i n s
11
Fig.2.2:Rear view Vapodest 20
DESCRIPTIONOFTHESYSTEM
4
5
6
2
3
1
7
8
9
10

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VAPODEST20
3 Delivery
Check for transport damage
Beforeassembling the instrumentpleasecheck if thecontentsof
the box is complete and intact!
Incase of anydamage, pleasenotify yourcarrier(post,rail, road)
andobtain an expert’sreport!
The exact contents of the delivery can be checked by the follo-
winglist.
Parts list
– Distillationsystem Vapodest 20, complete
– Tubingset:
1xWaterinlettube10/17mmwithconnectionsof1/2inchand
3/4 inch, 2m
1 x PVC tube 4/7 mm, 2 m
2 x PVC tube 8/12 mm, 2m
1 x PVC pipe 6 x 1 mm, 420 mm
1 x PVC pipe 10 x 1 mm, 420 mm
– 1 x Mains cable
– 1 x Kjeldatherm digestion tube 250 ml or 100 ml

C. Gerhardt GmbH & Co. KG 11
Installation
4 Assemblyandinstallation
Setup
Please observe the local water and waste regulations and those
of your public water supply enterprise!
Pleasenote that thelengthof the inletandoutlet tubing isrestric-
ted to 2 metres.
The appliance should be located on a fixed laboratory bench,
close to the cold water connection and a drain.
There should be sufficient space for the set of tanks below the
work bench.
Connect the water inlet tubing to a dedicated cold water tap.
The water pressure must be at least 0,5 bar in order to operate
the integrated pressure controller.
The Vapodest 20 comes completely preassembled. Please un-
pack the instrument with care!
1. Place instrument on work bench
2. Unpack accessories.
3. Place set of tanks for distilled water and sodium hydroxide
below the bench.
Makesure that the setof tanksare notplaced anyhigher thanthe
distillation unit!
4. Connect thepump tubes(connections aremarked atthe rear
of the apparatus) to the PVC-pipes of the chemical tanks:
– Inlet tubing sodium hydroxide (PVC-tubing 8/12 mm)
– Inlet tubing for distilled water steam generator
(PVC-tubing 4/7 mm)
5. Connect the water inlet tubing
- Connect water inlet tubing (pressure-proof tissue tubing
10/17 mm) to cooling water inlet and laboratory water supply
INSTALLATION
Tubing
connections

C. Gerhardt GmbH & Co. KG
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VAPODEST20
6. Connect the water outlet tubing:
– Connect water outlet tubing (PVC-tubing 8/12 mm) to con-
nection pipe at the rear and place in the drain.
Please check the nominal voltage on the type plate before con-
necting to the mains.
7. Mains connection
– Makesure that themains switchat thefrontof the instrument
is in position „0“
– Connect the mains cable to the rear appliance plug first
– Connect the mains cable to a shockproof socket
8. Use of the set of tanks KAN 20 (optional)
– Connectthe diode plugsofthe level detectorstothe distribu-
tion box and connect to the socket level detection (at rear)
– Blank off the remaining diode sockets of the distribution box
with the dummy diode plugs enclosed.
9. Excess current switch
– Before you first take the Vapodest into operation make sure
that the excess current switch at the rear is in position 1.
Setting into operation
Attention when working with acids and alkalies! Make sure you
observe the safety instructions concerning work with hazardous
materials!
Always close the plexiglass doors of the distillation unit before
operating!
1. Fill the set of tanks with chemicals:
–H
2
O distilled or demineralized
– NaOH 32 %
2. Turn on the water tap
3. Initial filling of steam generator
– When using the set of tanks KAN 20:
Press the key „+“ ((keep pressed), and switch on the instru-
ment
– When using other reservoirs:
Press the key „-“ (keep pressed), and switch on the instru-
ment

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Please note that these key combinations are only used for the
initialfilling ofthe steamgenerator. Forsubsequent operations
the instrument is switched on via the mains switch!
– Afterswitching the uniton thepump thatfillsthe steam gene-
ratorstartsimmediately, and the displayshows the error mes-
sage „E3“ (lack of water in the steam generator)
– Press key „Run“ (only for initial filling)
The steam generator is filled with water up to a preset level,
which then causes the pump to switch off.
4. Monitoring the status notice on the display:
The Vapodest 20 is now ready for operation.
INSTALLATION

C. Gerhardt GmbH & Co. KG
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VAPODEST20
5 Programmingthesystem
Keyboard
TheVapodest 20 canbe programmedandcontrolled via the key-
board of the control panel.
Entrykeyboard
Control LED
Controlkeyboard
Mains switch
Keyboard
Fig5.1: Control panel keyboard
Display
S t e a m
N a O H
-
O n - l i n e R e s e t
P r o g R u n
+
T i m e
S t e p
V a p o d e s t
1 0

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Display/Keys Meaning within program mode
Display program step
Time in seconds or minutes,
The Vapodest is delivered with the se-
cond-mode. In order to be able to switch
between the second- and the minute-
mode, please proceed as described:
- Press the key 'Prog' when turning on
the instrument - Display point flashes
Prog: check, memorize and
confirm programm
Run: Start data transfer in
synchronous mode (on-line activated))
„+“: Increasing actual value to
desired value
„-“: Decreasing actual value to
desired value
Reset:
Interruption of programming,
return to start position
Key On-line pressed:
Control LED illuminated,
RS 485 interface is activated
Programming status NaOH:
Control LED flashes
Programming status distillation:
control LED flashes
PROGRAMMING

C. Gerhardt GmbH & Co. KG
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VAPODEST20
Display/Key Meaning in Run mode
Display program step
Display point flashes
Time in seconds or minutes
Display program end
–
Run: Starting and repeating of program
–
–
Reset:
Interruption of program and return
to start position
On-line key pressed:
Control LED illuminated,
RS 485 interface is activated
Program step NaOH addition:
Control LED illuminated
Program step distillation:
Control LED illuminated

C. Gerhardt GmbH & Co. KG 17
Step Program status Time Confirmation
Start Start position
1 Addition NaOH Range:
0 to 30 s
Preset:
12 s
2 Reaction time Range:
0 to 999 s in
second-mode
or
0 to 99,9 min in
minute-mode
Preset:
0 s
ProgrammingtheVapodest20
EachVapodest undergoes apre-deliveryperformance test in the
qualityassurancedepartmentbeforeleavingC.Gerhardt.Onarri-
val the machine is supplied with the test program.
Ifyouwishtokeep this program, please confirmtheprogramsteps
with the „Prog“ key. If changes are required, please press either
the „+“ or „-“ keys at the relevant step, and then store with the
„Prog“key.
Programmingthe
distillationsystem
PROGRAMMING

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VAPODEST20
3 Distillation time Range:
0 to 999 s in
second-mode
or
0 to 99,9 min in
minute-mode
Preset:
0 s
3* Power Range:
40 to 100%
Preset:
100%
Prog. Start position
End
Programmingthe
distillationsystem

C. Gerhardt GmbH & Co. KG 19
On-linemode
TheRS485interfaceallowsqualityassuranceconformingtoISO/
GLP. It enables up to 32 different instruments (including other
makes)to be connectedbetween eachother.
Theon-line mode providesthe followingpossibilities:
1. Connection of personal computer for controlling and monito-
ringin conjunction withtheGerLab® user program.
2. ConnectionofPCforcontrollingandmonitoringinconjunction
with a customerised terminal program, i.e., Telix (MS-DOS),
Terminal(forWindows).Withtheassistance of the interface a
program,basedon the customers’ needs, canbe written, too.
3. Synchronousworkingofvariousequipment.Theprogramming
and controlling is effected via a system, which has been ap-
pointedsemimaster.
Theworkinginstructionsforthesynchronousmodeareas follows:
– Connectall instruments withtheinterface cables RS485
– Providethe last unitconnectedwith the terminatorAST
– Activate the on-line key of each instrument (control LED illu-
minated)
– Determine the semi master by pressing the keys „+“ (keep
pressed)and on-line (controlLED flashes)
Bypressingthis key-combination once more youcan return to the
simpleon-line position (Control LEDilluminated).
Synchronousmode
Controlvia PC
PROGRAMMING

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VAPODEST20
– Programmethe semi master asdescribed in theprevious pa-
ragraph
Afterhaving confirmed program step5 thefollowing isshown
on the display:
– Press the „Run“ key to initiate the data transfer from
thesemi master tothe connectedinstruments
– Aftertheterminationofthedatatransfertheprogrammingmode
automaticallyends, and thedisplayshows the startposition:
Further information about GerBus® and GerLab® can either be
optained from C. Gerhardt GmbH & Co. KG or our appointed
dealer!