Buchi K-314 Manuel utilisateur

BÜCHI Distillation Unit K-314

Contents

Read these instructions thoroughly before you use the BÜCHI

Distillation Unit K-314. Store these instructions in the imme-

diate vicinity of the apparatus so that they may be consulted at

any time. The unit must only be connected to the mains and

switched on after having completed all necessary preparations.

Chapter 2 contains important safety information. Knowledge

of this is imperative for the safe operation of the Distillation

unit.

Subject to technical change without notice. No part of these

instructions may be reproduced in any form whatsoever or

processed, reproduced or disseminated by means of

electronic or optical systems without the express written

en, Version C (22 pages) Order No.

K-314 Operating instructions 96706

1 Scope of Delivery 2

2 Safety 3

2.1 Symbols 3

2.2 Requirements for the operator 3

2.3 Regulation use 3

2.4 Non-regulation use 3

2.5 General hazards 4

2.6 Safety measures 4

3 Function 6

3.1 Principle of operation 6

4 Putting into operation 7

4.1 Setup location 7

4.2. Unpacking 7

4.3 Water supply 7

4.4 Drain hose 8

4.5 Connection of the supply tanks 8

5 Operation 9

5.1 Control elements 9

5.2 Control elements and their function 9

5.3 Start-up Checklist 10

5.4 Supply tanks 10

5.5 Rubber bung and PTFE hose 10

5.6 Sample tube holder 11

5.7 Distillation outlet tube 12

5.8 Connection to the mains 12

5.9 Adjusting the cooling water flow 12

5.10 K-314 switching ON/OFF checklist 12

5.11 Carrying out the Kjeldahl distillation 13

5.12 Cleaning the unit 13

5.13 Malfunctions 14

6 Maintenance 15

6.1 General information and preparations 15

6.2 Maintenance: daily, weekly 15

6.3 Rubber bung and PTFE hose 15

6.4 Cleaning the feeding pump 16

6.5 Changing glass parts 16

6.6 Customer service 16

6.7 Main fuses 17

6.8 Checking the unit 17

7 Taking out of operation 18

7.1 Storage/Transport 18

7.2 Disposal 18

8 Replacement parts 19

9 Appendix 20

BÜCHI Distillation Unit K-314

1 Scope of Delivery

1 Scope of delivery

Fig. 2: Enclosed parts

Fig. 1: General view

Accessories:

1 Sample tube 500 mL 26128

1 Rack for 4 sample tubes 500 mL 16951

1 Special rubber bung for 16890

Tecator/Gerhardt glasses

1 Handle with cam for 26109

Tecator/Gerhardt glasses

1 Indicator acc.Sher, 100 ml 03512

Table 3: Accessories

Description Order No.

Versions:

220 - 240V 50/60 Hz

K-314 complete 37961

Table 1: Versions

Enclosed parts:

1 Digestion tube 03904

1 Distillate outlet tube complete 26301

1 Pair of glass tongs 02004

1 Drip tray 26290

1 Water supply complete 10992

3 Nyflex hose ø 14/8 mm to 1,5 m 04113

2 Silicone hose ø 9/6 mm to 1,5 m 04133

2 Flow-through tube ø 8/6 mm 26058

1 Hose clamp 22352

1 NaOH tank 10 L, complete 26112

1 Water tank 10 L, complete 26113

1 Mains cable Type CH 10010

Typ Schuko 10016

Type GB 17835

Type AUS 17836

Type USA 33756

1 Operating instructions

German 96705

English 96706

French 96707

Italian 96708

Spanish 96709

Table 2: Enclosed parts

BÜCHI Distillation Unit K-314

2 Safety

The apparatus has been built in accordance with state-of-

the art technology and recognized safety regulations.

Nonetheless risks and dangers can arise from the

apparatus:

• If the apparatus is operated by insufficiently trained

personnel.

• If the apparatus is not used as directed.

2.1 Symbols

Stop

Information on dangers which can lead to serious damage

to property, to severe or life-threatening injuries.

Warning

Information on dangers which can lead to damage to health

or property.

Please note

Information on technical requirements. Noncompliance can

lead to faults, inefficiency and production losses.

2.2 Requirements for the operator

The unit is only to be used by laboratory and specialist

personnel and other persons, who, because of their training

or professional experience, are able to assess the dangers

which can result while operating the equipment.

Personnel without this training or persons who are in training

require thorough instruction. These operating instructions

are the basis.

2.3 Regulation use

The unit is conceived and built as a piece of laboratory

equipment. Its regulation use is the distillation of steam

volatile substances.

2.4 Non-regulation use

Any use other than those listed as well as any use which

does not correspond to the technical data is a misuse. The

operator bears sole risk for eventual damage related to

such use.

In particular the following uses are not allowed:

• operation in explosion-prone areas

• operation with samples that can explode or ignite due to

impact, friction, heat or sparking.

2 Safety

BÜCHI Distillation Unit K-314

2.5 General hazards

General hazards arise from:

• Hot acids and bases

• Combustible gases or vapors in the immediate vicinity

of the apparatus

• Damaged glassware

• Location of the apparatus to close to the wall (see

section 4.1 Set up location)

• Hot surfaces

Except for authorized repair personnel it is forbidden to remove

covers using commercially available tools.

The device must not be put into operation with damaged

glass parts.

Contact with electrically live parts presents a danger to life

and limb!

2.6 Safety measures

The distillation unit K-314 is equipped with a protective

door, which must be closed during operation.

The wearing of personal safety equipment such as safety

glasses, gloves and lllllaboratory coats is necessary.

As a necessary part of the distillation unit K-314, this

instruction manual must at all times be available to the

operating personnel at the location where the apparatus is

being used. This also applies to the further editions in other

languages which may be ordered seperately.

The fusion processing glass must only be removed with

pliers because of danger beeing burnt.

Modifications

Any modifications on the apparatus itself or on replacement

or accessory parts, and any use of replacement or

accessory parts other than those listed in these operating

instructions is permissible only with the express written

approval of Büchi Labortechnik AG.

Responsibilities of the operator

The operator is responsible for providing proper instruction

for his staff. For that purpose, these operating instructions

may also be ordered in other languages.

The operator must inform the manufacturer immediately of

any and all events relevant to product safety that arise

during his operation of the apparatus.

If assuming that a safe operation is not possible any more

the unit must be put out of operation and secured against

unintended further operation.

2 Safety

BÜCHI Distillation Unit K-314

2 Safety

It is to be assumed that a safe operation is not possible

any more

• if the unit is visibly damaged,

• If the unit is not functioning any more

• after long storage under anfavourable conditions,

• after being transported under difficult conditions.

The unit must not be operated with combustible substances.

If you need the assistance of Büchi Service, it is required

to indicate and declare eventually remaining dangerous

substances (e.g., as defined in EC guidelines L 360, 1976/

79 or VBG 16) in or on the apparatus for reason of on-the-

job safety or pollution control.

BÜCHI Distillation Unit K-314

3 Function

The distillation unit K-314 is suitable for determining nitrogen

using the Kjeldahl and Devarda methods..

. Other steam

distillations (e.g., of alcohol) can also be carried out easily.

3.1 Principle of operation

햲Sample tube

햳Splash protection

햴Cooler

햵Distillate outlet tube

햶Receiving vessel

햴

햵

햳

햶

햲

Fig. 3: Principle of operation K-314

BÜCHI Distillation Unit K-314

4 Putting into operation

4.1 Setup location

The distillation unit must be installed on a stable, clean and

flat base.

For reasons of safety, a gap of at least 30 cm must be left

open between the back of the machine and the wall or

other objects. Never place any containers, chemical

products or other equipment behind the distillation unit.

4.2 Unpacking

The original package must be kept for possible later

transport.

If the package has been damaged, check the machine

carefully for broken glass or damage to the housing.

Make certain that the socket voltage is the same as that

shown on the machine nameplate. Always connect the

machine to an earthed (grounded) socket. This avoids risks

due to an internal defect.

4.3 Water supply

The distillation unit K-314 is delivered with 3 Nyflex high-

pressure hoses intended for the following connections:

• cooling water inlet

•H

2O supply tank

• NaOH supply tank

Connect the cooling water connector to the mains water tap.

The standard sleeve nut has an R 1/2” thread (Fig. 4).

Accessories:

Reducer 1/2" 3/8" Art.No. 11289

Reducer 1/2" 3/4" Art.No. 11290

Cooling water inlet (1):

Shorten the Nyflex hose to the optimum length, connect it

to the water connector, and secure it with a hose clamp.

Connect the other end of the hose to the cooling water

inlet nipple.

Cooling water outlet (2):

Shorten the silicone hose [9/6 mm] to the optimum length

and connect it to the cooling water oulet nipple (OUT

nipple). Direct the open end into the drain.

Check

The cooling water must flow through the cooling unit from

the bottom to the top.

Make sure that the hose drains freely. No kinks! No airtraps

in the hose!

Fig. 4: Standard sleeve nut (premounted)

Fig. 5: K-314 rear

햲햳

BÜCHI Distillation Unit K-314

4 Putting into operation

Fig. 7: Connection supply tanks

4.4 Drain hose (3)

Make sure that the hose drains freely. No kinks! No airtraps

in the hose!

4.5 Connection of the supply tanks

• Connect the Nyflex hose to the flow-through tube

• Unscrew the small tank cap and stick it on the flow-

through tube

• Insert the flow-through tube with the tank cap on into

the tank until it reaches the stop

• Tighten the tank cap

• Connect the hose from the water tank to the K-314

(H2O nipple)

• Connect the hose from the sodium hydroxide tank to

the K-314 (NaOH nipple

• Fix the hose nozzle in place on the large tank cap.

The supply tanks must not be any higher than the unit

itself, nor any lower than 1 meter below it.

ca. 456

026660

026058

004113

026411

Fig. 6: Drain hose arrangement

BÜCHI Distillation Unit K-314

5 Operation

Fig. 8: Arrangement and designation of the control and display elements

5.1 Control elements

햲Main switch

햳Pressure switch for adding the sodium hydroxide

solution

햴Steam tap

햵Digestion tube

햶Rubber bung with PTFE hose

햷Sample tube holder

햸Distillate outlet tube with PTFE hose

햹Receiver plate

햺Drip tray

햻Protective door

햽Connection nipple for cooling water inlet hose (IN)

햾Connection nipple for cooling water outlet hose (OUT)

햿Connection nipple for sodium hydroxide solution

(NaOH)

헀Connection nipple for water (H2O)

헁Connection nipple for drain

헂Mains connector with 2 fuses 20x5,10 AT

5.2 Control elements and their function

I / O After switching on the distillation unit, it takes

about 90 seconds before the unit is ready for

operation.

Before switching on, check that the supply tanks

and/or the hoses are filled with reagents.

NaOH Sodium hydroxide adding switch.

The alkali is dosed in as long as the switch is

pressed.

Steam Steam on / off.

Switching the distillation on and off manually.

Fig. 10: Control elements and their function

Fig. 9: Arrangement and designation of the connection nipples

햴

햳

햲

햷

햶

햵

햺

햻

햹

햸

햿

헀

헂헁햽햾

I/O

NaOH

Steam

BÜCHI Distillation Unit K-314

5 Operation

5.3 Start-up checklist

The first time that the distillation unit is started up, there is

a penetrating odor. This smell, however, is of no importance.

It occurs when the heater pipe and the isolation become

warm. No overheating of the steam generator is possible.

5.4 Supply tanks

Fill the supply tanks. This can be done, for example, using

a bent funnel (Item No. 16662) or a footpump. The reagents

are forwarded within the K-314 unit by suction.

To ensure optimum long-time operation, the steam generator

must only be operated on distillated or deionized water!

Advantages:

1. No cleaning of the steam generator is necessary

2. The blank values can be kept under control.

Never supply the steam generator from a building distilled

water distribution pipe!

5.5 Rubber bung and PTFE hose

Check that the rubber bung and the PTFE hose are still properly

fitted, especially after they have been subjected to stresses

during transport or otherwise.

Mounting instruction:

If the PTFE hose has become loose, hold it with a piece of

sandpaper and refit it without kinking.

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