Table of Contents
Advertisement
Advertisement
Table of Contents
Related Manuals for Buchi K-435
Summary of Contents for Buchi K-435
-
Page 3: Table Of Contents
Remote Control Operation 5.6 Malfunctions Maintenance Please read these operating instructions carefully before using 6.1 General the Digestion Unit K-435. Keep these instructions in the 6.2 Upkeep proximity of the apparatus so that you can consult them 6.3 Seals immediately whenever necessary. -
Page 4: Supplied Materials
1 Scope of delivery Digestion Unit K-435 Scope of delivery Description Order code Version: K-435 standard 230 V 50/60 Hz 38130 Table1: Apparatus models Enclosed parts: 4 Digestion tubes 37377 2 Racks 26730 2 Upper insulation plate 26736 2 Suction module, complete... -
Page 5: Safety
Digestion Unit K-435 2 Safety Safety The apparatus is manufactured according to state-of-the-art technology and recognized safety regulations. Nevertheless, using this apparatus can lead to certain risks and dangers: • If the apparatus is used by inadequately trained personnel. • If the apparatus is not used according to these instructions. -
Page 6: Improper Use
These operating instructions must be regarded as an integral part of the Digestion Unit K-435 and be available at all times to operating personnel at the place of operation of the apparatus. - Page 7 Digestion Unit K-435 2 Safety Modifications Modifications of the apparatus or of spare parts or accessories as well as the use of spare parts or accessories other than those mentioned in these operating instructions is allowed only with the prior written permission of BÜCHI Labortechnik AG.
-
Page 8: Function
3 Function Digestion Unit K-435 Function The Digestion Unit K-435 is suitable for digestions using boiling concentrated sulfuric acid within a temperature range of up to approximately 370° C. Functional Principle Digestion glasses Heating Suction module Hose for water jet pump or to Scrubber B-414... -
Page 9: Installation
This will avoid risks due to internal defects. Connection to Power Supply Before the K-435 is turned on for the first time, ensure that the power supply voltage corresponds to the voltage given on the apparatus plate. -
Page 10: Hose Connections
The Scrubber B-414 220 V, 240 V can be connected directly to the K-435 with a connecting cable (Art. No. 14738). However, care must be taken that the voltage of the scrubber corresponds to the voltage of the K-435. -
Page 11: Operation
Digestion Unit K-435 5 Operation Operation Operational features Main switch Heat regulator Warning light for heating Power supply connection with fuse Power socket for Scrubber B-414 Connection for B-436 Figure 5: Placement of controls and operational elements on the front... - Page 12 5 Operation Digestion Unit K-435 Hot, caustic sulfuric acid is used for the operation of this apparatus. For this reason, protective goggles must be worn at all times when using this apparatus or working in its immediate proximity. Close unused connections with plug caps (Art.
-
Page 13: Conducting Kjeldahl Digestion
• Place the suction module with the mounted seals over the digestion glass holder.. Figure 10: Operation of K-435 • Turn on scrubber or water jet pump before any gases form. Conducting Kjeldahl Digestion in Remote Control Operation •... -
Page 14: 5.6 Malfunctions
5 Operation Digestion Unit K-435 5.6 Malfunctions Malfunction Possible Cause Correction Heating elements 1. Apparatus is not connected to - Connect the apparatus to the power supply do not heat power supply 2. Apparatus is turned off - Turn off apparatus 3. -
Page 15: Maintenance
Digestion Unit K-435 6 Maintenance Maintenance General The casing of the Digestion Unit K-435 is made of metal and covered with an acid-resistant coating. To avoid damage to this synthetic coating, any acid drops should be wiped away with a damp cloth. -
Page 16: Changing O-Rings
6 Maintenance Digestion Unit K-435 Changing O-Rings • Cut through the damaged washer with a knife of scalpel • Remove the glass holder • Draw the new washer over the suction module (cf. photo) • Replace glass holder and secure with washer Ç... -
Page 17: Taking Out Of Operation
Digestion Unit K-435 7 Taking out of operation Taking out of operation Any dangerous substances must be removed and the apparatus must be cleaned thoroughly. This avoids any risk that persons could be injured by contact with dangerous substances. Storage/Transport After it has been cleaned, return the apparatus to the original packaging for storage and transport. -
Page 18: Replacement Parts
Digestion Unit K-435 8 Replacement parts Replacement parts Only original accessories and spare parts from BÜCHI guarantee that the apparatus will function properly and safely. Spare parts and accessories from other manufacturers may be used only with the express permission of the manufacturer. -
Page 19: Appendix
Digestion Unit K-435 9 Appendix Appendix Technical Data Measurements (width x height c depth) 275 x 600 x 570 mm Voltage 230 V ± 10%, 50/60 Hz Connected value 2200 Watt Power input 10 Ampère Weight (net) approx.. 20,9 kg... -
Page 20: Fcc Requirements
9 Appendix Digestion Unit K-435 9.3 FCC requirements (for USA and Canada) English: This equipment has been tested and found to comply with the limits for a Class A digital device, pusuant to both Part 15 of the FCC Rules and the radio interference regulations of the Canadian Department of Communications. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. -
Page 21: Declaration Of Confirmity
Digestion Unit K-435 9 Appendix Declaration of confirmity... - Page 22 BÜCHI Labortechnik AG CH-9230 Flawil 1 / Switzerland T +41 71 394 63 63 F +41 71 394 65 65 www .buchi .com Quality in your hands...
Need help?
Do you have a question about the K-435 and is the answer not in the manual?
Questions and answers