Product training

High-quality products require competent sales advice and regular, professional maintenance. So that our sales and service partners can acquire these skills, we regularly organise seminars- and product trainings. These are very practical and provide participants with the skills needed to independently enter the market as qualified and competent GIS partners.


Here you will find answers to frequently asked questions and tips & tricks about our products.

General terms

What does IP protection class mean?

The degree of protection designation is always shown by the letter pair IP appended by two digits. These indicate the degree of protection of a casing with regard to contact and foreign bodies (first digit) and moisture or water (second digit). You will find more details here:

What does ATEX mean?

ATEX is a widely used synonym for the ATEX directives of the European Union. The term ATEX is derived from the French abbreviation for "ATmosphère EXplosibles".  The directive currently includes two directives in the field of explosion protection, namely the ATEX product directive 2014/34 / EU and the ATEX operation directive 1999/92 / EC. GIS electric chain hoists provide protection against dust or gas and have barometric pressure and temperature monitoring in the casing. System errors lead to immediate interruption of operation (in case of gas intrusion or a pressure drop). Available for the zones 22 (D) and 2 (G).

Chain hoists + trolleys

What is a contactor control?

GIS electric chain hoists are fitted with a 42 V contactor control as standard. In the control switch, which controls the operating current (high voltage), only low voltage current flows.

Electric chain hoist low headroom version GPK

What is a low-headroom version?

The GIS electric chain hoist with chain deflection for obtaining lifting height. Suitable for particularly low ceilings.

What is a synchronised hoist?

2 GIS electric chain hoists are electrically and mechanically connected for absolutely synchronous lifting. Suitable for long and bulky loads.

What is a Handy chain model?

The GIS electric chain hoist for quick and effortless positioning of loads. The control unit is used to operate the chain hoist and simultaneously to guide the load with one hand.

What is a Handy telescope model?

The GIS electric chain hoist for quick and exact positioning of loads. The control unit is used to operate the chain hoist and simultaneously to guide the load with one hand. Suitable for eccentric loads.

Are electric chain hoists from GIS suitable for outdoors use?

The GP / GPM series feature as standard protection class IP 65 (dust-tight and protected against water jets), which allows outdoor use without any problems.

Can you recommend an electric chain hoist that is very quiet?

Thanks to its 3-stage gear with helical teeth, the GIS electric chain hoist GPM250 from the new GP series is very quiet with 65 db (measuring distance 1 m) compared to other commercially available chain hoists.

electric chain hoist for outdoor use in sewage treatment plant

What capacities are single-phase electric chain hoists suitable for?

GIS single-phase electric chain hoists can be used for a lifting capacity of 2000 kg. For maximum capacities the hoisting speed is reduced to 2 m/min. Power driven trolleys in 1 phase design are available for the electric chain hoists.

Electric chain hoists on aerial cableway

What is the temperature range for the use of electric chain hoists?

GIS electric chain hoists in the standard version are suitable for the temperature range - 15° to + 50°. For ambient temperatures below the minimum and above the maximum special versions are used.

What are the advantages of profile-steel chains?

In comparison with traditional round-steel chains, profile-steel chains as used with the electric chain hoist GPM and GP have a significantly higher safety factor which reduces the wear out and extends the service life.

Motorised trolley for the electric movement of goods

Are trolleys equipped with a fall protection?

All GIS manual and electric trolleys are equipped with an integrated fall and climbing protection made of solid cast steel, as well as an intervention protection.

Suspension monorails with curves for goods transport

Can GIS trolleys manoeuvre around curve radii?

GIS trolleys type GHF and GMF can be equipped with support rollers for smooth cornering. Detailed information on the curve radius can be found on the dimensional drawings of the trolleys.

Tips & tricks: Lubrication of the chain

Regular lubrication of the chain can extend the service life by the factor 20 - 50. It is important to lubricate the chain also between the chain links. A commercially available lubrication can be used here.

Tips & tricks: Preventing diagonal pull

The diagonal pull of loads (> 4°) should be avoided, since the chain and the chain guide are excessively worn out in this way, which can affect the safety of the system.

Tips & tricks: Wrong running direction of the chain hoist

The electric chain hoist is electrically incorrectly connected and needs to be properly connected by authorised staff.

Overhead travelling crane with electric chain hoist in external warehouse

Tips & tricks: Outdoor operation

As a standard, our electric chain hoists GPM and GP are suitable for outdoor operation due to protection class IP65. In addition, it is recommended to install a protective cover above the electric chain hoist to protect it against weather influences.

Tips & tricks: Protecting the control cable

Never pull the control cable to move the electric chain hoist, even when a strain-relief cable is installed. The control cable could be damaged or pulled out. Dislocation of the chain hoist must be carried out with a load hook.

Push trolley for outdoor application and use in food production

Tips & tricks: Trolley with plastic rollers

Should the standard steel rollers be too loud or should they transmit noise into the building, we recommend plastic rollers (up to maximum 1250 kg). For more soundproofing solutions please contact our sales team.

Motorized trolley for outdoor application and use in food production

Tips & tricks: Trolley with stainless rollers

In case of aggressive acids or alkalis in your working environment, we recommend a corrosion-resistant electric chain hoist and a trolley with corrosion-resistant rollers.

Crane systems

Crane system with electric chain hoist for the transport of metal beams

What is a low headroom bridge?

To optimise the overall height the cross member (crane bridge) is built between the crane rails.

Chain hoist is optimally integrated into the crane and offers maximum lifting height

What is a saddle?

Height optimization for double crane bridge with elevated electric chain hoist.

What is a bend?

GISKB bends with 30° or 45° are used for flexible alignment while joining different workstations.

What is a slide switch?

GISKB sliding switch points are used to connect two or more lines. They are adjustable mechanically or electrically.

What is a turntable?

The GISKB turntable allows a 90° change of direction in a confined space. The rotation takes place mechanically or pneumatically. 

What is a freestanding system?

Instead of mounting to the ceiling or the roof structure the crane tracks and the crane bridge can be mounted on the longitudinal and transverse members of a supporting structure


What is an electric tug?

Electrically operated trolley with frequency converter - drive for GISKB hollow profiles.

What is a rolling apparatus?

Manual trolley for GISKB hollow profiles.

Which hollow profiles are better - steel or aluminium?

Crane systems with hollow steel are less expensive to run smoothly thanks to plastic rollers and are also suitable for larger span widths of the crane bridge. Aluminium hollow profiles are used for lighter loads up to 630 kg. They offer excellent smooth running characteristics improved handling at higher ergonomics and thus shorter cycle times.

Do crane systems have to be checked on a regular basis, and if so by whom?

Cranes and hoists are safety-relevant equipment whose perfect technical condition is a basic prerequisite for accident-free operation. As the operator of crane systems and other lifting equipment, you are obliged (according to BetrSichV or DGUV) to have them inspected by an expert as required, but at least once a year, depending on the conditions of use and the operational conditions. The manufacturer's inspection instructions in the operating manuals must be observed.

Neither the ceiling nor the existing upper construction are able to carry the load of a crane system. Are there alternatives to the installation of a crane system?

By means of free standing steel columns, a crane system can be built from the bottom (free standing system). Depending on the area, which a crane has to cover, a slewing wall crane or a slewing pillar cranes is an economic alternative.

Overhead travelling crane with intermediate structure in cheese production

Do you also have crane solutions for the food industry?

For the food industry, the chemical industry or for waste water treatment plants, where special demands are placed on corrosion resistance, profiles can be used in a hot-dip galvanized version. All screws and components are as standard galvanized. The hoists can be supplied in a corrosion-resistant version.

Is it possible to lift loads outside of the suspension points of the crane system?

To cover confined areas the GISKB crane systems can be designed as special versions with telescopic or overhang devices. This allows the user to move loads beyond the crane runway.

Crane system with synchronous electric chain hoists for lifting long goods

Tips & tricks: Electric relocation of loads

The manual relocation of loads in steel beams, particularly in case of repetitive goods handling, can be very tedious. In such cases we recommend the installation of an electric tug. It enables continuous electric moving and can also be retrofitted in existing crane systems. This can also reduce inconvenient swinging of the load

Crane system for synchronous lifting transports long iron bars

Tips & tricks: Sagging control switch interferes with load

Instead of a control switch use a radio control or an ideal control system in order to operate the crane system from a safe distance. 

Vacuum handling systems

What is a high-pressure - vacuum device?

In the high-pressure - vacuum device (Type GH) a high vacuum of about 80-90% is created in a deep volume flow.  It is exclusively suitable for air-impermeable goods such as glass, metal, plastic or stone.

What is a low-pressure - vacuum device?

In the low-pressure - vacuum device (Type GN) a high vacuum of about 30-90% is created in a deep volume flow. It is suitable both for airtight goods as well as for light air-permeable porous goods or goods such as wood panels or beams, concrete slabs or cardboard.

What is an ejector - vacuum device?

The ejector - vacuum device works according to the Venturi principle and is a high - pressure vacuum device. It is suitable for the vertical transport of glass and other air-impermeable goods.

Slewing pillar crane with vacuum lifter lifts table

What is a turning device?

GIS turning devices are vacuum - handling systems with which panels or doors can be infinitely turned 180°.

What is a vacuum-handling device?

The hose - vacuum handling system sucks and lifts the load. It is used for repetitive, fast and stepless handling of cardboard, sacks, barrels, containers etc. up to 300 kg.

Can easily permeable goods such as wooden panels be transported using vacuum?

With the vacuum hoists GN with side channel seal which generates a high volume flow, also slightly air-permeable or porous loads can be transported.

A wooden panel is lifted, turned and moved by means of a vacuum lifter


Can vacuum hoists turn or tilt panels?

For the vacuum-hoisting systems GN and GH turning and/or tilting is available as an option.

A fully assembled window is lifted from the work table by crane and brought to the transport trolley

Does GIS have a cost-efficient solution for the vertical transportation of glass panels?

Assuming that a compressed air supply is present, the device GHGE is a cost effective solution for the vertical transport of air-impermeable materials such as glass, metal and plastic.

What are the advantages of vacuum-lifting systems from GIS in comparison with competing products?

By our customers with the central control unit it is especially appreciated that the vacuum generation as well as all hoists and movements can be controlled. This simplifies operation, as it is not necessary to work with two independent control units.

Is there an alternative to vacuum-lifting devices when it comes to lifting heavy and bulky wooden panels?

For the vertical transport of panels of all kinds up to a load capacity of 250 kg (gripper opening 0 - 60 mm), the use of a gripper plate in combination with a GIS electric chain hoist is an inexpensive alternative. The panel gripper is particularly suitable for limited ceiling height.

Systems + components

Crane system for the efficient storage and retrieval of panels and pallets in the warehouse

What is a shelf storage operation unit?

GIS shelf storage operation units with vacuum unit or lifting device are used for the efficient storage and retrieval of panels and other goods in and out of shelves.

What is an roving pendent and when is it used?

In crane systems with roving pendents, the control switch is operated in a C-rail parallel to the crane track and can be moved independently of the load. It is used mainly in big and bulky loads where the crane operator wants to move independent of the load. 

What is a frequency inverter?

A frequency inverter changes the mains frequency to a voltage with a different frequency. This enables a soft start for travelling or lifting movements. Frequency converters are available for electric chain hoists, trolley drives and crane controls.

Transporting window frames with GIS overhead travelling cranes

When is the use of a frequency inverter recommended?

The frequency inverter is particularly suitable for oscillating free transportation and for precise positioning of loads. Through the soft start the whole crane system is also protected, which increases the service life of all components subject to significant wear.

What is a radio remote control?

Radio remote control for wireless operation of all hoisting and other movements. available for electric chain hoists and complete crane systems.

A plastic container is gently lifted by the GIS electric chain hoist and transported from the ground floor to the stage on the ground floor.

When is the use of a remote control recommended?

For large and bulky goods or when transporting the load in poorly or not accessible workspaces, we recommend using a remote control. This can conveniently control up to six travelling and lifting movements from a safe distance.