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Let us introduce you: our electrical engineering department

Our electrical engineering department is associated with the mechanical engineering and development departments.

Abteilungsleiter: Jürgen Gaul

Let us introduce to you: our electrical engineering department

In the following article, we are pleased to present you our electrical engineering department.
Our electrical engineering department is associated with the mechanical engineering and the development departments. The key tasks consist of the design development and improvement of the electro-technical parts for our Freeze-Drying Systems, Loading and Unloading Systems, Freeze-Thaw Units and Leak-Detection Systems of our affiliated company HOF Prüfsysteme GmbH. Another main task is to plan upgrades and maintenance of existing systems of HOF or of other manufacturers.

HOF employees create GMP and standard compliant circuit documents needed for the construction, qualification and documentation of systems. Specifically, plant overviews, wiring diagrams, terminal diagrams, cable diagrams and parts lists are issued. Inspection plans for VDE measurements (VDE=German Electrical Engineering Association) made on the equipment and inspection plans for safety technology resulting from the risk analysis are also created.

Safety systems for freeze dryers are developed in accordance with the current guidelines and in close collaboration with the public monitoring institutions.

HOF control systems are designed and constructed so that they are safe and reliable to avoid any dangerous situation. It must be pointed out that they withstand any service conditions and external effects.

In a risk analysis, each danger point is identified by HOF departments (kind of danger, probability and extent) with the objective that, for each risk, a performance level PLr (required level of safety function) is determined. All safety-related parts (electrical, hydraulic, pneumatic, mechanical) are considered, regardless of the technology and energy used.

Furthermore, all other risks resulting from the use in the drying of solvent based products (ATEX) or biologically active products which might have influence on the protection of people, environment, product and machine, are considered, case-by-case, and are implemented in a conceptual framework.

HOF systems are safe and reliable: these are decisive features which are repetitively tested and targeted.

Another important aspect is the efficient use of energy and its optimization. The energy expenditure of consumers is recorded, analyzed and adapted with appropriate measures, by way of example to the process speed frequency optimization, start-up behavior or use of wasted heat through heat recovery. Our other aims are to comply with motors efficiency ratings (IE 3 / IE 4) and to improve them.

Fields of development currently focus on remote diagnosis and process-oriented video recording.

Review of ACHEMA 2015 - Sophisticated and successful!

At this year's international trade fair for process industry, HOF presented itself again to all regular and prospective customers with an attractive booth.

At this year's international trade fair for process industry, HOF presented itself again to all regular and prospective customers with an attractive booth.

3,813 exhibitors presented their products on 133.000m² exhibition space. With 166,000 visitors from 15 - 19 June 2015 in Frankfurt, ACHEMA has been a resounding success, a fact that was also affirmed by the organizers.

Many of our customers came to thoroughly acquaint themselves with new technologies, discuss current projects or simply look for a face-to-face contact.

HOF exhibited at its booth the following equipment: HOF MINILYO, HOF MASSANALYZER and an automatic loading and unloading system. In addition, its visualization programs “HOF LYOCOM” and “HOF FREEZE VIEWER Professional” were displayed on PC counters.

HOF’s innovative thinking was the main theme of the booth. Emphasis was made on our automatic loading and unloading systems, HOF SYNCHROFREEZE, the ecological thinking and technological know-how.

Customer service of HOF: The Number 1 for your installations

Our challenge is: a stable and reliable production for your daily business. To meet this demand, it is required to have a motivated and fit for service team and a pronounced and immediately available spare parts range.

[Translate to Englisch:] Holger Prinz - Abteilungsleiter Service

Our challenge is: a stable and reliable production for your daily business. To meet this demand, it is required to have a motivated and fit for service team and a pronounced and immediately available spare parts range.

With more than 40 employees in the service department and more than 60,000 items in our stock, we are fit for service 365 days a year. Thanks to our 24-hour emergency hotline, you can also reach us outside the regular business hours. If a problem occurs, we can work out a joint solution and plan the next steps by phone.

Whether you need spare parts, a repair or replacement of components, our short response times and tailor-made measures allow you to use your equipment again very shortly.
In case of software or control system problems, remote servicing can usually be carried out to determine the cause. Targeted interventions in the respective process step sequences enable to keep the current batch stable and reliable.

The holistic support service of your equipment has a special significance, regardless whether annual maintenance or case of failure.

(v.l.n.r.: Marco Lang, Abteilungsleiter Dr. Alexander Hof, Daniel Lotz, Gunnar Stadelmann)

Let us introduce our new department for ‚project coordination‘

In this article, we would like to present our newest department which started in the beginning of 2015: ‚project coordination‘.

Dr. Alexander Hof - Geschäftsleitung
Dr. Alexander Hof - Geschäftsleitung

In this article, we would like to present our newest department which started in the beginning of 2015: ‚project coordination‘.

Concerning project management, projects comprising freeze dryers as well as loading and unloading devices become more and more complex.

This means, the more complex or the more critical in terms of time a project is for our customers, the more complex are the requirements towards support, planning, documentation and transparency. In order to meet these increasing requirements, HOF is deploying a ‚project coordinator‘, in addition to the technical project leader. Together they form a team for our project management.

The project coordinator will accompany the final steps of the tendering stage and will be the primary contact person for the further course of the project all the way to the site acceptance test. He communicates internal and external topics, manages the interface to other supplying parties, updates the project status and the according timeline, and coordinates open points.

 

Overview of the general tasks:

  • Primary contact for our customers throughout the whole course of the project
  • External communication with the customer, as well as additional suppliers and service providers
  • Internal communication of information
  • Organization and structuring of project-specific documents (eg. minutes of a meeting, agenda, status, dispatch of documents, supplements, etc.)
  • Coordination of open points
  • Reporting to the management

HOF - We introduce our mechanical engineering department to you

The mechanical engineering department for freeze-drying is an important link between the sales department and the manufacturing department at HOF.

The fully equipment planning including installation plans and layouts, pressure vessel designs, manufacturing drawings of individual components and P&ID drawings are part of the project management’s field of responsibilities.

The mechanical engineering department for freeze-drying is an important link between the sales department and the manufacturing department at HOF.

The fully equipment planning including installation plans and layouts, pressure vessel designs, manufacturing drawings of individual components and P&ID drawings are part of the project management’s field of responsibilities.

The project management is subject to a continual improvement process with the aim of meeting the stringent requirements and due to the complexity of the installation in conjunction with the loading systems. The project manager is fully responsible for his project and accompanies it in the design phase, during the manufacturing and the delivery, up to the machine acceptance on-site. This operating process is very important to guarantee a continuous quality assurance.
 
Once we have designed and calculated a customer’s project at the tender stage, the first step in the project management is to create a functional specification. This task is performed by the sales department and the functional specification is transferred to the project manager. Then, we can start with the creation of the installation plan and the P&ID drawings for the plant. In parallel or immediately afterwards we can start with the manufacturing of the inner parts and the construction of the chamber and condenser vessels (chamber). Before we begin with the manufacturing of the actual main part, the chamber, it must be checked if the pressure vessel directive is applicable. Certificates of conformity, risk assessments and norms must also be taken into account.

The plant and its components are designed using the latest 3D software programs, although HOF has developed special design standards. The results of the engineering consist in documents such as drawings and parts lists. To ensure the correctness of the design documents, the corresponding design calculations are performed, such as strength calculations, thermal calculations, fluid dynamic calculations and other calculations. The drawings are checked by a second person before the acceptance is given to manufacturing (“four-eyes principle”). In conclusion, technical documentation and manuals are then drawn up.

If you have a question, please contact Mr.Hubert Sell      sellh@hof-sonderanlagen.de

The following tasks are part of the general tasks of our mechanical engineering department:

Project management and customer communication
Calculation and design of pressure vessels
Design of components and assemblies
Planning of piping systems
Planning of retrofits and modifications
Creation of P & ID flow diagrams
Preparation of technical documentation
Creation of risk analyses
Process calculations
Mechanical installation check
Project support during introduction into the building and installation

Just in time quality for demanding customers

A consistent implementation of the quality management is sine qua non and part of the corporate principle at HOF. Continuous quality controls in all areas do guarantee products that meet the highest requirements. Setting high standards for its own method of work is one of the prerequisites for HOF’s success.

This principle of Hans-Georg Hof is a daily matter of course, since the company HOF, whose product offering is in close contact with pharmaceutical products, attaches special importance to the reliability of production processes and to quality assurance.

For a successful partnership, a consistent implementation of the quality management system is sine qua non. It begins with purchasing and supply of parts: HOF pays attention to high quality standard "made in Germany". Continuous quality controls in all areas guarantee products that meet the highest requirements.

Quality controls of the incoming goods, mechanical external production components and basic materials are made using different methods of measurement. Our subcontractors are subject to regular inspections on different manufacturing levels according to international regulations, guidelines and customer specifications. On a regular basis, there are also internal controls at HOF within the scope of quality assurance. Hydraulic lines made by HOF are also tested according to international regulations and guidelines and customer specifications.

A measurement is made of the surface roughness of the components in contact with the product. Also, the dalta-ferrit content of base materials and welding seams is determined. Finished surfaces are examined by a dye penetrant inspection, in order to locate any possible pores or surface cracking. An endoscopic quality control of welding and hydraulic lines constructions is made.

The high expectation of its own method of work is one of the prerequisites for HOF’s success. The processes in the company are certified according to DIN EN ISO 9001:2008. Thus, the quality in the development and manufacturing of machinery and systems is ensured.

Customer benefits:

  • Assurance and enhancement of the required quality of the products
  • Continuous improvement of production processes
  • Alignment of products and processes to customer requirements

Shelves „made by HOF“

The shelves of a freeze-drying system are elementary components and thus essential part of the whole process. In order to meet its own requirements, “in-house” manufactured shelves for HOF freeze-drying systems are produced in the own shelf production department.

The shelves of a freeze-drying system are elementary components and thus essential part of the whole process.

Accordingly, HOF has put its focus on the shelves manufacturing. In order to meet its own requirements, “in-house” manufactured shelves for HOF freeze-drying systems are produced in the own shelf production department.
Certified welders and a redundant structure of the manufacturing machines ensure the required quality. In addition, the proven design ensures a homogeneous temperature distribution, regardless of whether there are shelves with 0,075 m2 for a laboratory equipment, or shelves with individual sizes of 2,8 m2 for a production plant .

According to the special machinery construction, each shelf package is individually designed following the customer demand and the respective available area. All production steps proceed following a specified guideline in order to keep a consistent quality. Controls of shelf welding seams in water bath and a measurement of the shelf areas with laser technology are here basically performed. Grinding operations are accurately monitored and the roughness is recorded. If necessary, X-ray tests or thermographic recordings of individual shelf areas can be carried out.

The 1st HOF technical forum –<br />a reflection with information and impressions

On the occasion of the 25th anniversary HOF Sonderanlagenbau held its 1st technical forum. Renowned specialists reported on latest research subjects and innovative applications during pharmaceutical production. To exchange first-hand practical knowledge, more than 100 attendees came to Lohra and turned this little town near Marburg to a central point for this highly specialized sector for this specific day.

Here you will find a review of the event with pictures and the german video

 

The information of our event appear shortly.

Important information about SCADA systems Lyocom I + II of Siemens

In 2015, the guaranteed availability of spare parts for Siemens S5 components will discontinue, for the components of the S5-135U series too. 

In 2015, the guaranteed availability of spare parts for Siemens S5 components will discontinue, for the components of the S5-135U series too.
From now on, we cannot ensure the supply of computer hardware for Lyocom I and II systems anymore. Therefore, since the company HOF can no longer ensure the availability of the spare parts, we now announce the termination of the support for the SCADA systems Lyocom I + II with effect from 31st of December 2015. This means that any changes to do at the systems after this date are then only possible in exceptional cases. In each individual case, it will be checked whether defective systems can be repaired or not. We will be glad to assist you in developing a concept for the migration of the system control.

Energy independence by means of own soft commodities

Current discussions about renewable energies reported in the daily media are also an important issue for our company. Expenses for electricity and heat for an office and production area of over 12,500 m² are considerable.

Current discussions about renewable energies reported in the daily media are also an important issue for our company. Expenses for electricity and heat for an office and production area of over 12,500 m² are considerable. Since sustainability is top priority in our corporate philosophy, HOF has been using a technology since the beginning of this heating season, so far unique in Germany. The company owner and hobby farmer Hans -Georg Hof is a pioneer in concluding the entire value chain by working straw into combustible to generate its own heat supply.

The straw-by product resulting from the cultivation of grain is worked into straw pellets during a complicated procedure in the family-owned pellet plant. The pellets are then burned in the special biomass boiler for CO2 neutral heat production. The ash obtained by burning is then further of use as an excellent fertilizer for agricultural areas.

The heating system itself has a modular design consisting of five 20 ft containers.
It is composed of the burning boiler with control system, the pellet storage on top, the laterally connected unit for flue gas cleaning and two large-sized buffers for heating water.

By means of this system, it was so far possible to heat successfully the 5,700 m² large part of the factory in Gladenbach-Mornshausen. The straw needed for this procedure is covered at 100 % by the family’s agricultural land. The pellet plant is operated thanks to a photovoltaic system installed in sufficient dimension, so that even the production of pellets happens in a self-sufficient way.
This newly established innovation is already widely approved and HOF is pleased to make this contribution to sustainability.

Any questions?