Leister LHS Operating Instructions Manual

Leister LHS SYSTEM
Air Heater

Please read operating instructions carefully before use and
keep for further reference.

GB

OPERATING INSTRUCTIONS

The Leister Air Heater type LHS SYSTEM are suitable for building into machines,
installations or appliances and are designed for continuous operation.

• Drying and heating processes of various types.

• Shrinking and welding packaging films and moulded parts.

• Heating conveyor ovens or heat tunnels.

• Activating and loosening solvent free adhesives and melt adhesives.

• Sterilizing packaging materials such as bottles, corks and containers.

• Separating and fusing synthethic fibres and fabrics.

• Soldering processes on thin metal parts.

• Speeding up mixing processes and dissolving foams which can arise during

mixing and filling operations.

• Welding thermoplastic materials.

• Removing plastic mould flash.

• Putting a shine on plastic surfaces.

APPLICATION

Leister Process Technologies, Riedstrasse, CH-6060 Sarnen/Switzerland

Tel. [phone] Fax [phone]

www.leister.com [e-mail]

LHS SYSTEM 20S
LHS SYSTEM 20L

LHS SYSTEM 40S
LHS SYSTEM 40L

LHS SYSTEM 60S
LHS SYSTEM 60L

®

Technical Data
LHS SYSTEM 20S 20L 40S 40L 60S 60L

Voltage V~ 100 – 230 200 – 230 100 – 230 3×230 – 3×440 3×230 – 3×480 3×230 – 3×480

Frequency Hz 50/60 50/60 50/60 50/60 50/60 50/60

Power
consumption kW 1.0 / 2.0 3.3 2.0 / 4.0 2.0 / 4.0 4.0 / 6.0 5.0 – 16.0

Air flow l/min. min. 100 min. 200 min. 200 min. 200 min. 300 min. 400

Temperature °C max. 650 max. 650 max. 650 max. 650 max. 650 max. 650

Ambient °C
temperature <65 <65 < 65 <65 <65 <65

Weight kg 0.55 0.65 0.85 0.95 3.15 3.65

Size mm 237×97×92 267×97×92 246×112×103 276×112×103 379×116×137 379 ×116×137
Mark of conformity ¬¬¬¬¬¬
Marl of approval ††††††

Certification scheme CCA CCA CCA CCA CCA CCA
Protection class I ‡‡
Protection class II ¶¶¶ ¶

2

Danger! When opening up the tool, live components and
connections are exposed. The mains plug must be removed
from the main socket before opening up the tool. Caution

separate source voltage.

Incorrect installation and use of air heaters can present
a fire and explosion hazard, particularly in the proximity of
flammable materials and explosive gases.

Do not touch the element housing and nozzle when hot
as they can cause burns. Do not point the hot air flow at
people or animals.

WARNING

The tool must be operated with supervision. Warmth can
reach combustible materials, which are out of sight.

The voltage rating stated on the tool should correspond
to the mains voltage.
IEC/EN 61000-3-11; Z

max

= 0.047

Ω

+ j 0.029Ω. If necessary,

consultate supply authority.

Protect the tool from dampness and wet.

100

480

CAUTION

The tool with protection class I should be earthed using a
protective conductor.

OPERATING Leister LHS SYSTEM

3

Installation

• When installing the tool, ensure that:

- only cold air is supplied

- no (hot air) back pressure develops

- the tool is not subjected to a hot air flow from another tool

• The tool is protected against mechanical vibration and shaking.

• Installation dimensions on pages 5, 6 and 7.

Air supply

• To protect the tool and the heat element, the stipulated minimum air flow must
under no circumstances fall short, and the maximum temperature (measured
at the hotest point 3 mm in front of the element housing) must also not be
exceeded. In the event that the minimum air flow falls short, the power must
immediately be disconnected.

• The air heater should only be supplied with air up to a max. 80°C.

• Pay attention to the direction of the airflow.

• Leister blowers must be used for the air supply (pay attention to the direction of
rotation and the electrical connection).

• For use in a dusty environment the tool should be fitted with a Leister stainless
steel filter on the air intake connection. Where a particularly critical dust problem
exists (eg metal, electrically charged or damp dust) special filters must be used to
avoid short circuiting of the tool.

Operation

• The tool must be connected by a qualified electrician in accordance with the
circuit diagram (Pages 5,6 or 7).

• Fit a nozzle appropriate to the use.

• It should be checked that the hot air can flow out freely, otherwise a back
pressure of hot air may damage the tool (danger of fire!).

• Attention: Keep to the minimum air flow according to the technical details
(Page 2).

• Switch on mains.

• Allow the tool to cool down after use.

Attention: Never operate tool without air supply!