Assembly and operating instructions
REMKO LTE 50, 60, 80
Dehumidifier
0153-2017-07 Edition 1, en_GB
Read the instructions prior to performing any task!
Read these operating instructions carefully before commissioning / using this device!
These instructions are an integral part of the system and must
always be kept near or on the device.
Subject to modifications; No liability accepted for errors or misprints!
Installation and operating instructions (translation of the original)
Table of contents
1 Safety and usage instructions............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Identification of notes...................................................................................................................... 4
1.3 Personnel qualifications.................................................................................................................. 4
1.4 Dangers of failure to observe the safety notes................................................................................ 4
1.5 Safety-conscious working............................................................................................................... 4
1.6 Safety instructions for the operator................................................................................................. 5
1.7 Safety notes for installation, maintenance and inspection work...................................................... 5
1.8 Unauthorised modification and changes......................................................................................... 6
1.9 Intended use................................................................................................................................... 6
1.10 Warranty........................................................................................................................................ 6
1.11 Transport and packaging............................................................................................................... 6
1.12 Environmental protection and recycling........................................................................................ 6
2 Technical data........................................................................................................................................ 7
2.1 Unit data.......................................................................................................................................... 7
3 Design and function.............................................................................................................................. 9
3.1 Air dehumidification - general note.................................................................................................. 9
3.2 Unit description............................................................................................................................. 12
4 Assembly............................................................................................................................................. 14
4.1 Setting up the unit......................................................................................................................... 14
4.2 Unit transport................................................................................................................................. 14
5 Electrical wiring................................................................................................................................... 15
5.1 General notes................................................................................................................................ 15
5.2 Electrical wiring diagram............................................................................................................... 15
6 Commissioning................................................................................................................................... 16
7
Condensate removal........................................................................................................................... 21
8 Troubleshooting and customer service............................................................................................ 24
9 Shutdown............................................................................................................................................. 25
10 Care and maintenance........................................................................................................................ 26
10.1 Care and maintenance................................................................................................................ 26
10.2 Maintenance protocol.................................................................................................................. 28
11 Exploded view of unit and spare parts............................................................................................. 29
11.1 Exploded view of the unit LTE 50/60/80...................................................................................... 29
11.2 Spare parts list LTE 50/60/80...................................................................................................... 30
12 Index..................................................................................................................................................... 32
3
REMKO LTE
1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before commissioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
.
liability
Keep this operating manual and the refrigerant
data sheet near to the units.
1.2 Identification of notes
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by symbols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or material and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recommendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, operation, maintenance, inspection and installation must
be able to demonstrate that they hold a qualification which proves their ability to undertake the
work.
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger
cause serious injury.
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury
, which if not avoided may be fatal or
WARNING!
.
1.4
Dangers of failure to observe the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
In particular, failure to observe the safety notes
may pose the following risks:
n The failure of important unit functions.
n The failure of prescribed methods of mainte-
nance and repair
n Danger to people on account of electrical and
mechanical effects.
.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
4
1.6 Safety instructions for the operator
The operational safety of the units and components is only assured providing they are used as
intended and in a fully assembled state.
This unit can be used by children above the age of
8, as well as by people with impaired physical,
sensory or mental capabilities or a lack of experience and knowledge if they are supervised or have
received instruction in the safe operation of the
unit, and if they understand the associated potential hazards. Children must never play with the
device. Cleaning and user maintenance must not
be carried out by unsupervised children.
n The units and components may only be set up,
installed and maintained by qualified personnel.
n If the mains power supply line of this unit is
damaged, this must be replaced by the manufacturer or their customer services department
or a similarly qualified person in order to avoid
any hazard.
n Do not operate units or components with
obvious defects or signs of damage.
n The units may not be installed or operated in
explosive environments.
n The units must not be installed or operated in
atmospheres containing oil, sulphur
salt.
n The units must be installed upright and in a
stable position.
n The units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
n All housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects. An unobstructed air inlet and air outlet
must be guaranteed at all times.
n The units must not be covered during opera-
tion.
n Never stick foreign objects into the units.
n The units must not be transported while they
are running.
n The units must only be transported when the
condensate container is empty and the evaporator is dry.
n All electrical cables on the outside of the units
must be protected against damage (e.g. by animals etc.).
n Before each change of location, the conden-
sate container must be emptied.
n The units must be inspected by a service tech-
nician to ensure that they are safe to use and
fully functional at least once yearly. Visual
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.
, chlorine or
NOTICE!
Extensions to the connection cable must only
be conducted by authorised specialist electricians, taking into consideration the unit power
consumption, cable length and local use.
NOTICE!
W
ork on the refrigerant system and on the electrical equipment must only be conducted by a
specially-authorised specialist!
1.7 Safety notes for installation, maintenance and inspection work
n Appropriate hazard prevention measures must
be taken to prevent risks to people when performing installation, repair
cleaning work on the units.
n The setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
n If the mains power supply line of this unit is
damaged, this must be replaced by the manufacturer or their customer services department
or a similarly qualified person in order to avoid
any hazard.
n The units must be installed upright and in a
stable position.
n The units must not be exposed to direct jets of
water, e.g. pressure washers etc.
n Safety devices may not be modified or
bypassed.
n The units and components may only be set up,
installed and maintained by qualified personnel.
n Do not operate units or components with
obvious defects or signs of damage.
n The units may not be installed or operated in
explosive environments.
n The units must not be installed or operated in
atmospheres containing oil, sulphur, chlorine or
salt.
n The units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
n All housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects. An unobstructed air inlet and air outlet
must be guaranteed at all times.
, maintenance or
5
REMKO LTE
n All electrical cables on the outside of the units
must be protected against damage (e.g. by animals etc.).
n The units must be inspected by a service tech-
nician to ensure that they are safe to use and
fully functional at least once yearly
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.
. Visual
1.8 Unauthorised modification and changes
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety
use of other parts may invalidate liability for
resulting consequences.
. The
1.9 Intended use
The units are designed exclusively for drying and
dehumidification purposes in industrial or commercial situations on the basis of their structural design
and equipment. The units must only be operated
by appropriately instructed personnel.
Any different or additional use is a non-intended
use. The manufacturer/supplier assumes no liability for damages arising from non-intended use.
The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.
The threshold values specified in the technical
data must not be exceeded.
1.10 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative complete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "General business and delivery conditions". Furthermore, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
1.11 Transport and packaging
The devices are supplied in a sturdy shipping con-
. Please check the equipment immediately
tainer
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.
WARNING!
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
1.12 Environmental protection and recycling
Disposal of packaging
All products are packed for transport in environmentally friendly materials. Make a valuable contribution to reducing waste and sustaining raw materials. Only dispose of packaging at approved
collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufacture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not disposed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner
cling specialists or at collection points.
, e.g. using certified firms and recy-
6
2 Technical data
2.1 Unit data
Unit type LTE 50 LTE 60 LTE 80
Operating range, temperature °C 3 to 32
Operating range, humidity % RH 40 to 100
Dehumidification capacity max. l/day 51 62 80
at 30 °C / 80% RH
(DER)
1)
45.2 54.0 70.1
l/day
l/day
at 20 °C / 70% RH
(DER)
1)
25.6 31.9 40.7
l/day
at 10 °C / 60% RH
Max. airflow volume
(DER)
m3/h
1)
8.0 10.1 12.3
380 465 490
Condensate container capacity l 10.0
Compressor / condenser - design Rotary piston
Refrigerant
2)
R410A
Refrigerant quantity g 420 540 750
Power supply V/Hz 230/1~/50
Max. rated current consumption A 2.86 3.61 4.01
Max. power consumption kW 0.63 0.76 0.91
At 20 °C / 70% RH kW 0.48 0.60 0.68
Customer-provided electrical protection A 16
Type of connection Y
Enclosure class IP20
Sound pressure level LpA 1m
3)
dB(A) 49 53 52
Electronic start safeguard Series
Operating hours counter Series
Power meters Series
Hot gas defrosting Series
Hygrostat Series
Room temperature sensor Series
Condensate pump, built-in Option
Hose length (condensate pump) m
5 (10 4))
Delivery height (condensate pump) m 5
For more, see the next page.
7
REMKO LTE
Unit type LTE 50 LTE 60 LTE 80
Dimensions
Depth mm 512
Width mm 540
Height mm 795
Height incl. transportation bracket mm 945
Weight kg 38.5 40.0 45.0
EDP no. 618500 618600 618800
EDP no. Unit with condensate pump 618505 618605 618805
1)
(DER) = Dehumidification output figure in accordance with DIN EN 810
2)
Contains greenhouse gas according to Kyoto protocol.
3)
Noise level measurement DIN 3744 - KL 2
4)
Max. permissible hose length
W
e reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
8
A
B
3 Design and function
3.1 Air dehumidification general note
The correlations occurring when air is dehumidified
are based on physical laws. These are depicted
here in graphical form in order to provide you with
a brief overview of the principles of air dehumidification
The use of REMKO air dehumidifiers
n Even if windows and doors are well insulated,
water and moisture are still capable of penetrating thick concrete walls.
n The water required for setting in the production
of concrete, mortar and plaster etc. may only
fused after 1-2 months.
be dif
n Even moisture trapped in the masonry after
high-water or a flood is released very slowly.
n The same is also true of moisture contained in
stored materials for example.
The moisture (water vapour) released from parts of
a building or materials is absorbed by the surrounding air
increases, which ultimately gives rise to corrosion,
mould, rot, peeling of paint and other unwanted
damage. By way of example, the diagram below
shows the corrosion rate of metal in different levels
of humidity.
. As a result, the moisture content
1. By heating and air exchange: The air in the
room is heated in order for moisture to be
removed and then this air is fed outside. All
of the energy that is involved is lost together
with the moist air that is released.
2. By air dehumidification: The moist air that is
present within an enclosed space is continuously dehumidified in accordance with the
condensation principle.
With regard to energy consumption, air dehumidification has one distinct advantage:
Energy expenditure is limited exclusively to the air
volumes present. The mechanical heat that is
released by the dehumidification process is fed
back into the room.
NOTICE!
Under normal use, the air dehumidifier uses
approximately 25% of the energy that is
required for the "heating and ventilating" principle.
Fig. 1: Corrosion rate in relation to relative humidity
A: Corrosion rate
B: Relative humidity [%]
It is evident that the corrosion rate below 50% relative humidity (RH) is low
gible.
The corrosion rate increases significantly above
60% RH. This threshold for damage as the result
of humidity also applies to other materials, such as
powdery substances, packaging, wood and electronic units.
Buildings may be dried in a variety of ways:
9
, and below 40% is negli-
REMKO LTE
Relative air humidity
Our ambient air is a gaseous mixture which always
contains a certain volume of water in the form of
water vapour
per kg of dry air (absolute moisture content).
1m3 of air weighs approx. 1.2 kg at 20 °C
Depending on the temperature, each kg of air is
only capable of absorbing a certain volume of
water vapour. Once this capacity has been
reached, the air is referred to as "saturated" and
has a relative humidity (RH) of 100%.
Relative humidity is understood to mean the ratio
between the current quantity of water vapour in the
air and the maximum possible quantity of water
vapour at the same temperature. The ability of the
air to absorb water vapour increases as the temperature rises. I.e. the maximum possible (absolute) water content becomes greater as the temperature rises.
Temp.
°C 40% 60%
. This volume of water is specified in g
Water vapour content in g/m
at humidity of
3
Drying materials
Building materials and structures are capable of
absorbing considerable volumes of water
brick 90-190 l/m³, heavy concrete 140-190 l/m³ and
limestone 180-270 l/m³. The drying of moist materials such as masonry is effected as follows:
The moisture moves from the inside of the material
to its surface.
, such as
-5 1.3 1.9
+10 3.8 5.6
+15 5.1 7.7
+20 6.9 10.4
+25 9.2 13.8
+30 12.9 18.2
°C 80% 100%
-5 2.6 3.3
+10 7.5 9.4
+15 10.2 12.8
+20 13.8 17.3
+25 18.4 23.0
+30 24.3 30.3
Fig. 2: Drying damp masonry
n Evaporation occurs on the surface = T
of water vapour to the ambient air
n The air containing water vapour is constantly
circulated through the REMKO air dehumidifier.
The air is dehumidified and, slightly heated,
leaves the unit in order to re-absorb water
vapour
n In this way, the moisture contained in the mate-
rial is reduced gradually
The material is dried!
The accumulated condensate is collected in the
unit and drained of
f from there.
ransfer
Fig. 3: Extracting and collecting condensate
10
Functional principle of the air dehumidifier
2
1
A
B
C
a
As it flows through or over the evaporator, the air stream is cooled to dew point. The water vapour condenses, and is collected in a condensate trap from where it is drained of
f.
Fig. 4: Functional principle of the air dehumidifier
1: Evaporator
2: Condenser
A: Air temperature
The condensation of water vapour
Because the capacity for the maximum possible
volume of water vapour increases as the air is
heated, the volume of water vapour contained
remains constant and so relative humidity falls.
In contrast, because the capacity for the maximum
possible volume of water vapour decreases as the
air is cooled, the volume of water vapour contained
remains constant and so relative humidity
increases. If the temperature continues to fall, the
capacity for the maximum possible volume of water
vapour is reduced so much so that it is ultimately
equal to the volume of water vapour contained in
.
the air
This temperature is referred to as the dew point. If
the air is cooled to below dew point, the volume of
water vapour in the air will become greater than
the maximum possible volume of water vapour. At
this point, the water vapour begins to precipitate. It
then condenses to water. Humidity is then
removed from the air.
B: Air direction
C: Humidity
a: Progression
Examples of condensation include steamed-up
window panes in winter, or the moisture on the outside of a cold drinks bottle.
As the relative humidity of the air increases, so too
does the dew point, making it easier for the temperature to fall below it.
Condensation heat
The energy transferred to the air from the condenser consists of:
1. the amount of heat derived beforehand in the
evaporator
2. the electrical drive energy
3. the condensation heat released by the lique-
fying of the water vapour
.
11
REMKO LTE
Energy must be supplied when liquid is converted
into a gas. This energy is designated as evaporation heat. It does not cause any increase in temperature, but is required to convert a liquid into a
gas. Conversely
liquefied, this is designated as condensation heat.
The amount of energy from evaporation heat and
condensation heat is the same.
For water, this is: 2250 kJ/kg (4.18 kJ = 1kcal)
From this it is evident that the condensation of
water vapour causes a large quantity of energy to
be released. With drying operations, a heat cycle is
created, whereby heat is consumed for evaporation and released for condensation.
Generally speaking, the time required for the
drying process is not only dependent on the
output of the unit, but is determined to a greater
extent by the speed at which the material or
building section loses its moisture.
, energy is released when gas is
3.2 Unit description
The units have been designed for universal and
straightforward air dehumidification.
Their compact dimensions allow the unit to be
transported and set up with ease.
The units operate in accordance with the condensation principle and are equipped with a hermetically sealed refrigerant system, low-noise and lowmaintenance fan, operating hours and energy
counter as well as a connection cable with plug.
Fully-automatic electronic controller
container with integrated overflow protection in
addition to connection ports for direct condensate
drainage help to ensure continuous fault-free operation.
The units conform to the fundamental health and
safety requirements of the appropriate EU stipulations. The units are dependable and offer ease of
operation.
Locations at which units are used
The units are used in all locations, where dry air is
a must and where economic consequential
damage (such as that caused by mould) must be
prevented.
, a condensate
The units may be used for the drying and dehumidification of areas such as:
n New buildings, industrial buildings
n Basements, storage rooms
n Archives, laboratories
eekend homes, caravans
n W
n Bathrooms, wash rooms and changing rooms
etc.
Operating sequence
Switching on the unit puts the electrical control into
operation. The green "COMP
on the control panel illuminates. Due to an automatic pressure equalisation, the units start with a
time delay of around 10 seconds.
The fan extracts the moist room air through the
dust filter, evaporator and the condenser behind.
Heat is removed from the room air on the cold
evaporator. The air is then cooled to below dew
point. The water vapour contained in the room air
is then deposited as condensate or rime on the
evaporator fins.
If the temperature sensor here measures a pre-set
minimum, it activates a timer with a 30 minute
delay. If the evaporator temperature stops
increasing during this period, the cooling cycle
switches to hot gas defrosting after the timer cycle.
The fan remains out of operation during the
defrosting phase.
As soon as the rime (ice) has been defrosted and
the temperature at the probe has increased, the
unit switches back to normal dehumidification
mode.
If the room temperature is sufficiently high, the surface of the fins will not be cold enough for rime formation to occur, rendering defrosting unnecessary.
Therefore, the air dehumidifiers work economically.
The cooled and dehumidified air is re-heated by
the condenser (heat exchanger), and blown back
into the room through the outlet grille. The processed, dry, heated air then re-mixes with the room
air.
Continuous circulation of the room air through the
unit gradually reduces the relative humidity (% RH)
in the room to the desired humidity level.
Depending on the room temperature and the
humidity, only 30-40% electrical energy is required,
in accordance with the output of the unit.
. ON" indicator light
12
21
4
3
5
A
B
Fig. 5: Air dehumidification operating principle
A: Dehumidified room air
B: Moist room air
1: Fan
2: Condenser
3: Evaporator
4: Compressor
5: Condensate container
13
0,5 m
0,5 m
REMKO LTE
4 Assembly
4.1 Setting up the unit
For the best economic and safe use of the units,
the following notes must be followed in full:
n The units must be set up in an upright and
level position, to ensure that the condensate
can drain freely
o ensure optimum air circulation, the units
n T
should be set up in the centre of the room,
where possible
n It must be ensured that the air can be sucked
in on the front of the unit and blown out of the
rear of the unit without obstruction
n Observe a minimum clearance of 50 cm from
walls at all times
n Units must never be set up in the immediate
vicinity of heaters or other sources of heat
n The room being dried or dehumidified must be
closed to the surrounding atmosphere
n Air circulation is improved if the unit is set up
approx. 1 m above the ground
n Avoid having opened windows and doors etc.,
and avoid frequent entry to or exit from the
room as much as possible
n If the units are to be used in dusty environ-
ments, appropriate care and maintenance
measures should be taken in accordance with
the relevant conditions
n The output of the unit is entirely dependent on
the conditions inside the room, room temperature, relative humidity and observance of the
set-up instructions
n The units may not be used in environments
containing a great deal of dust or chlorine, or in
places with atmospheres containing ammonia
NOTES:
– Keep windows and doors closed!
– Keep at least 0.5 m away from walls.
– Maintain adequate clearance from heaters
or other sources of heat.
4.2 Unit transport
For easy transportation, the units are equipped
with 2 large wheels and an ergonomic transportation handle and protective frame. This can also be
dismantled easily if required.
When transporting the units, observe the following:
1. Before each change of location, switch of
the unit and remove the power plug from the
mains socket.
2. Drain the condensate container
3. Only transport the units in an upright position
where possible.
4. If the unit was transported on its side, you
must wait 1 hour with the unit in an upright
position before switching on.
.
f
Fig. 6: Setting up the unit
NOTICE!
Beware of dripping condensate. After switching
of
f the units, the evaporator may continue to
defrost under the influence of the ambient temperature.
WARNING!
The mains cable must never be used as a pull
cord or fixing device.
14
5 Electrical wiring
~
A
B
21 4
3
5 6 7 8 9
1 2 3 4 5 6 7 8
PE
PE
PE
10
C
PE L N
11
12
PE
5.1 General notes
n The units are operated with 230 V / 50 Hz
alternating current
n The electrical connection is made using a built-
in mains cable with earthed safety plug
WARNING!
The electrical connection to the units must be
made at feed-points with residual current
devices in accordance with VDE 0100, Section
704. When installing the units in extremely
damp environments such as laundry rooms,
showers etc., the unit must secured with a
residual current device provided by the customer in accordance with the regulations.
5.2 Electrical wiring diagram
n Extensions to the connection cable may only
be carried out by authorised electricians, subject to the length of the cable, connected load
of the unit and taking into consideration how
the unit is used at its location
CAUTION!
All cable extensions must only be used in fully
un-reeled or reeled of
f condition.
Fig. 7: Electrical wiring diagram
A: Control board
B: Display circuit board
C: Optional
1: Power supply
2: Compressor
3: Solenoid valve
4: Fan motor
5: Evaporator probe
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
15
6: Condenser probe
7: Water stop probe
8: RESET button
9: Humidity probe
10: Fuse 3.15A 250V
11: Mains adapter
12: Condensate pump
REMKO LTE
6 Commissioning
Before commissioning the unit or if local requirements dictate, the air-inlet grille and air-outlet grille
must be checked for contamination.
NOTICE!
A contaminated grille or filter must be cleaned
or replaced immediately
Important notes prior to commissioning
n All extensions to the electrical connection must
be of a suf
used fully rolled out or unrolled.
n Never use the power supply connection cable
as a pull cord.
n After being switched on, the units operate fully-
automatically until switched off by the float
when the condensate container is full.
n The condensate container must be inserted
properly.
n In order to prevent damage to the condenser,
the units are equipped with a mechanism that
prevents the compressor from being immediately switched back on after it is switched off
The compressor does not switch back on
until after a waiting time of ca. 1 minute!
ficient cable size and must only be
.
Starting the unit
Start the unit as follows:
1. Plug the unit's power plug into a properly
installed and fused mains socket (230V/50
Hz).
If you connect the dehumidifier to the mains,
the unit should be switched of
ating). The segment display and LED indicators illuminate for 3 seconds (the humidity
display shows "88" and the hour counter display shows "88888.8"). After that the segment display for the humidity [3] shows the
environmental humidity and the display for
the operating hours counter and the energy
counter [6] shows the operating hours
counted for the compressor.
2. Actuate the "ON/OFF" key
The green "COMP. ON" indicator light illuminates. The unit switches on with a time delay
of around 10 seconds and then runs in continuous operating mode.
The unit will now operates fully-automatically
until the desired relative humidity (% RH) has
been reached or until the unit is switched off
by the float when the condensate container is
full. In this case, the red "FULL TANK" indicator light illuminates.
f (not oper-
.
NOTICE!
In room temperatures below 10 °C and relative
humidity below 40%, economical use of the unit
can no longer be guaranteed.
Automatic restart after power failure:
If the electrical power fails or if the power plug is
pulled out during operation, the unit switches off.
When the unit is switched back on again or if the
power plug is put back in again the unit starts up
again automatically after a safety delay time of 70
seconds.
16
Control and display panel:
2 14
3
56
789101112
1
2
3
Fig. 8: Control panel
ON / OFF key:
After actuating the ON / OFF key whilst switched
of
f, the unit starts as soon as the humidity in the
room (RH) is 4% higher than the target value set
for the humidity in the room. The start sequence is:
Fan motor ON → solenoid valve ON 10 seconds
and then OFF → compressor ON. If the room
humidity is lower than the target value set for the
humidity in the room, then the "COMP. ON" indicator flashes and the unit is in standby mode (not
operating).
If the ON / OFF key is actuated during operation,
the unit and the COMP ON" display switch off. The
ON / OFF delay time of the compressor is 1
minute.
SET HUMIDITY - Desired humidity setting:
After the unit is switched on, the target room
humidity can be adjusted up or down by pressing
the arrow keys. As soon as the room humidity reaches the target humidity set, the compressor and
the fan motor stop. The target room humidity set is
displayed for 3 seconds during the adjustment and
then reverts to the current measured room
humidity
.
NOTE:
If the humidity lies below the target humidity set
(i.e.: rRH <-3%), the compressor and the fan
motor stop. If the humidity is higher than the target
humidity set (i.e.: rRH >+4%), the unit restarts
with a 3 minute delay
.
Example: If the target humidity = 50% RH, but the
room humidity is 47% RH, then the compressor
and fan motor stop and the "COMP. ON" indicator
flashes (standby display!). While the room humidity
rises to 54% RH, the unit restarts with a 3 minute
delay time in accordance with the start function
sequence.
The target room humidity value must be set within
3 seconds by pressing the up arrow or down arrow
keys. Then the current room humidity is displayed
again.
Segment display for humidity
, room temper-
ature and malfunction code:
The standard display is the current measured room
humidity. The humidity value to be changed is displayed for 3 seconds by pressing one of the arrow
keys [2] to set the target room humidity. If the
ROOM TEMP key is pressed, the current measured room temperature is shown in the display for
5 seconds and then the display automatically
switches back to the current measured room
humidity.
n If the unit is restarted it reverts to the pre-
vious setting
n The adjustment steps for the target humidity
are 5% ( RH) per key press. The adjustment
range for the target humidity should lie
between 30% and 70% ( RH)
17
4
5
6
7
8
9
REMKO LTE
Function or situation Segment display
Power plug is plugged in, the unit is
switched of
f
Current measured room humidity is displayed
The unit starts Current measured room humidity is displayed
During the adjustment of the target room
The target room humidity set is displayed
humidity
Upon actuation of the ROOM TEMP. Key
The current measured room temperature is
displayed for 5 secs
Is a malfunction is present Error code is displayed
Room temperature key (RT) - T
o display the
room temperature:
By actuating the "ROOM TEMP." key, the red RT
°C indicator illuminates and the current room temperature is displayed for 5 seconds in the segment
display [3]. Then the current measured room
humidity appears again automatically.
COMP
. ON INDICATOR:
If the compressor is running, this indicator is illuminated. If the compressor is stops, the indicator
flashes.
The unit has a 3 minute restart delay for the compressor as a safety function. This means that the
compressor requires 3 minutes to restart after it
has stopped due to having reached the target
COUNTED key - to display the electrical
power consumed or the compressor run-time
room humidity set. The "COMP. ON" indicator
flashes during the 3-minute protection period
counted:
By actuating the "COUNTED" key
, the "kWh" indicator illuminates and the electrical power (kW) consumed by the unit is displayed in the segment display [6].
Actuating the "COUNTED" key again switches off
the "kWh" indicator and the operating hours (h) of
the compressor are displayed in the segment display [6].
DEFROST INDICA
If the temperature of the evaporator (Te) is <= 1 °C
and the compressor runs for more than 5 minutes,
the DEFROST indicator flashes and the 30-minute
delay timer for the defrost function starts.
Defrost function: Compressor still ON, fan motor
OFF, solenoid valve ON, DEFROST indicator illuminates. If the temperature of the evaporator (Te)
TOR:
is >= 3 °C then the defrost function stops and the
Segment display - display of the electrical
power consumed or the compressor run-time
counted:
In standby mode, the current compressor run-time
(h) is displayed in the segment display [6] or
, by
actuating the "COUNTED" key, the electrical power
consumed (kWh).
The segment display [6] shows the operating hours
of the compressor or the electrical power consumed by the unit. The display shows values from
"0.0" to "99999.9"
DEFROST indicator extinguishes.
Function of the unit after defrost: Compressor ON,
fan motor ON, solenoid valve OFF, DEFROST indicator off
"CHECK" indicator:
If there is an abnormal situation (malfunction), the
CHECK indicator [9] illuminates or flashes. If the
temperature probe (T
e or Tc) or the humidity probe
is defective, the unit switches off and the indicator
light [9] illuminates. Then the error code (E1, E2,
E4 or E5) is displayed in the segment display [3]. If
the water tank is full (FULL TANK), the indicator
light (CHECK) flashes.
If the temperature of the condenser (Tc) is over
50 °C while the unit is running, the indicator light
(CHECK) flashes.
There are two types of protective function for the
Tc over-temperature (50 °C):
18
10
11
12
If Tc is >50 °C and the compressor runs within 5
minutes, the unit switches of
f and the error code
"E3" is shown in the segment display [3] and the
CHECK indicator [9] flashes. In this case, the fault
cannot be reset with a key press. The unit power
plug must be removed from the socket so that the
unit is completely de-energised. Then, the dehumidifier can be restarted after a restart delay of 70
seconds.
If Tc is > 50 °C and the compressor runs over 5
minutes, the compressor stops but the fan motor
continues to run for a further 30 minutes. The segment display flashes with fault code E3 during this
time. After 30 minutes the unit is restarted for
normal function with the previous setting.
NOTE:
n Within this 30 minute protective period, the
"ON / OFF" key can be pressed in order to
switch the unit of
f. If the "ON / OFF" key is
then pressed, the unit restarts after a delay
time of 1 minute.
RT °C INDICATOR:
If the "ROOM TEMP" key is pressed, the RT indicator [10] illuminates for 5 seconds.
"FULL T
ANK" DISPLAY:
If the water tank is full the "FULL TANK" and
"CHECK" indicators illuminate. The compressor
and the fan motor are automatically switched off at
this time.
In order to reset the messages described, the condensate water must be removed from the water
tank. Then the water tank must be properly
inserted back into the unit. After that the unit will
start again after a 3 minute delay time.
If the unit is switched off while the "FULL TANK"
and "CHECK" indicators are illuminated, both indicators switch off.
If the unit is switched on, but is in standby mode
(i.e.: room humidity is lower than the target room
humidity set), the compressor and the fan motor
are switched off and the "COMP. ON" indicator illuminates. If the water tank is full at this time, the
"FULL TANK" and "CHECK" indicators flash.
kWh INDICA
TOR:
By actuating the "COUNTED" key, the "kWh" indicator illuminates and the electrical power in kW
consumed by the unit is displayed in the segment
display [6].
19
REMKO LTE
Function table:
Functions
A Comp. ON LED OFF Flashes ON ON ON OFF
B Check LED OFF OFF OFF OFF OFF Flashes
C Defrost LED OFF OFF OFF Flashes
D Full Tank LED OFF OFF OFF OFF OFF Flashes
E Solenoid valve OFF OFF
F Fan motor OFF OFF
Power plug
inserted
OFF
(no opera-
tion)
Operating status: Unit
operating or in standby
Standby
(no opera-
tion)
r RH <-3%
The unit
starts
r
RH >+4%
ON
for 10 sec.
then OFF
ON
after
10 sec.
Defrost function
30 min. timer
expires if
e<=1 °C
T
OFF
ON
After the
30 mins.
defrost timer
function has
passed
ON
If
T
e >=3 °C,
then OFF
ON
If
T
e >=3 °C,
then OFF
OFF
If
T
e >=3 °C,
then ON
Full tank
function
OFF
OFF
OFF
G Compressor OFF OFF
Humidity seg-
H
ment display [3]
Operating
hours / power
I
consumption
segment display [6]
Operating hours or power consumption are displayed
(changeover by actuating the "h/kWh" key)
ON
after
10+0.5 sec
Current room humidity is displayed
ON ON OFF
20
7 Condensate removal
A
B
Depending on the air temperature and the relative
humidity
densate container either continuously or only
during the defrosting phases.
A float is located inside the condensate container.
In the event that the container is full, the float will
activate a water stop switch which will switch off
dehumidification mode.
To guard against accidental stops caused by water
sloshing around etc., this switch does not activate
until after a time delay of 10 seconds. The unit will
switch off and the red "TANK FULL" indicator light
on the control panel will flash.
In order to empty the condensate tank, proceed as
follows:
1. Actuate the "ON/OFF" switch.
2. Remove the filled condensate tank. T
, condensed water will drip into the con-
o do
this, lift the container slightly using the
embedded recessed grip and then pull it
carefully forwards and out.
NOTICE!
5. Close the pouring opening [B] and carefully
insert the condensate container back into the
unit.
6.
NOTICE!
After being emptied, the condensate container incl. float must be checked for
damage, contamination etc.
Switch the unit on again with the "ON/OFF"
key .
Beware of dripping condensate. After switching
of
f the units, the evaporator may continue to
defrost under the influence of the ambient temperature.
3.
Place the container carefully outside the unit
and pull of the sealing cover [A] of the
pouring opening [B].
4. Pour the water into a drain.
NOTICE!
The units are only fully functional if the condensate container is inserted properly
Unit operation with hose connection
The hose connection is implemented directly on
the 12 mm Ø screw-in hose nozzle that is placed
on the top edge of the condensate tank when
shipped.
Connect the hose as follows:
1. Remove the condensate tank.
2. Remove the screw-in hose nozzle from the
place-holder [D] and swap this for the sealing
screw in the 3/8" inside thread [C]. Then
tighten the screw-in hose nozzle hand-tight.
Ensure that the connection is sealed!
3. Plug hose with inside diameter 12 mm onto
the screw-in hose nozzle and secure this with
a hose clamp to prevent it slipping off.
4. Then fit the condensate tank back into place.
Ensure that there are no kinks in the hose!
.
21
C
D
E
F
REMKO LTE
Unit operation with condensate pump
(optional)
The condensate tank with integrated pump has two
magnetic contacts [E] on the rear to establish the
electrical connection with the unit. If the unit is supplied with power
at the contacts on the unit side. This provides the
power supply for the condensate pump.
, 12 V DC is continuously present
Fig. 9: Detailed view
Fig. 10: Placeholder
Fig. 11: Sealing screw
Fig. 13: Condensate tank at the rear
The following steps should be carried out for unit
operation with condensate pump:
1. Remove the condensate tank.
2. Plug the hose supplied onto the pass-though
hose nozzle [F] fitted previously and secure
this with a hose clamp to prevent it slipping
of
f.
3. Ensure that the connection is sealed.
4. Fit the condensate tank back into place. The
pump is immediately ready for use. If the
water level in the condensate tank is suf
ciently high, this starts to pump out the water.
Ensure that there are no kinks in the hose!
fi-
Fig. 12: Screw-in hose nozzle
In unattended permanent operating mode, the condensate should preferably be drained into a lowerlevel drain. If using a collection container (pan,
bucket, etc.), the unit must be placed at a correct
height.
Fig. 14: Condensate tank and hose
NOTICE!
Unit operation with condensate pump is only
possible with units that were shipped with the
pump installed.
22
NOTICE!
If the condensate pump runs for an extended
period of time, the condensate tank must be
checked for contamination at regular intervals.
Unit operation with a condensate tank without
pump is possible at any time.
23
REMKO LTE
8 Troubleshooting and customer service
The unit and components are manufactured using state-of-the-art production methods and tested several
times to verify that they function correctly
detailed in the list below. Please inform your dealer if the unit is still not working correctly after all function
checks have been performed!
Operational malfunctions
Malfunction Remedial measures
Check the setting of the "ON/OFF" switch. The green "COMP. "ON" indicator must illuminate
Check the power supply and the power fuse provided by the customer
230V/1~/50 Hz
The unit does not start
Check the power plug and the cable for damage
. However, if alarms should occur, please check the functions as
The red CHECK (malfunction)
indicator light illuminates
The unit runs but does not
form any condensate
Check the level and correct seating of the condensate tank
Check the setting of the desired humidity. The pre-set value must be lower
than the relative humidity in the room
The cooling cycle is overloaded or overheated (see "CHECK" indicator
Ä
on page 18)
Before starting the unit again, first identify the cause of the malfunction.
(see "CHECK" indicator
Check the room temperature. The operating range of the unit is between
3 °C and 32 °C
Check humidity of the air, min. 40% RH required
Check the dust filter for contamination and clean or replace if necessary
Check the evaporator and condenser fins for contamination and clean if
necessary
Check the evaporator for ice or rime formation. If ice has formed, check the
functionality of the automatic defrost and the temperature sensor
If the unit fails to function correctly after the checks have been carried out,
contact an authorised specialist
Ä
on page 18)
WARNING!
ork on the refrigerant system and on the electrical equipment must only be conducted by a specially-
W
authorised specialist!
24
Display of error codes
1
Error codes are displayed in the segment display [1].
Fig. 15: Segment display
Error code description:
Error code Error description
E1 Evaporator temperature probe (Te) defective
E2 Condensate temperature probe (Tc) defective
E3 Compressor runs within 5 minutes and the condenser temperature (Tc) > 50 °C
E3 flashes Compressor runs over 5 minutes and the condenser temperature (Tc) > 50 °C
E4 Humidity/temperature probe (hygrostat) defective (room humidity measured > 100% RH)
E5 Humidity/temperature probe (room temperature Rt)
9 Shutdown
Actuate the "ON/OFF" key, the "COMP. ON" indicator must extinguish.
If the units are inactive for longer periods, disconnect them from the mains power supply
Empty the condensate container and dry with a
clean cloth.
Beware of dripping condensate!
When storing the unit, cover with a plastic sheet/
foil if necessary and store in an upright position in
a sheltered and dry location.
To save space when storing, the units can be
stacked on top of one another (max. two units
stacked on top of each another). For this purpose,
they are equipped with rubber pads on the base
plate.
.
Fig. 16: Stacking with max. 2 units
NOTICE!
The units must be protected against falling
down and unauthorised access after stacking.
25
REMKO LTE
10 Care and maintenance
10.1 Care and maintenance
General notes
Regular care and maintenance is fundamental
to a long service life and fault-free operation of
the unit.
All moving parts have a low-maintenance permanent coat of lubricant. The refrigerant system is
designed as a hermetically sealed system and may
only be repaired by a specialist.
DANGER!
Before undertaking any work on the units, the
mains plug must be removed from the mains
socket.
n Observe the regular care and maintenance
intervals
Cleaning the dust filter
NOTICE!
Check the inlet and outlet grille and the dust
filter for contamination on a regular basis.
Pull the protection grid forwards and then remove
upwards.
Then remove the dust filter which has now been
released. Light contamination of the dust filter may
be remedied with careful blowing or suction.
Heavier contamination may be remedied by rinsing
the filter in a lukewarm (max. 40 °C) soap solution.
Finally
, always rinse the filter carefully with clear
water and allow to dry!
Before refitting the dust filter, ensure that its fully
dry and that no damage has been sustained.
NOTICE!
Heavily contaminated dust filters must be
replaced with new parts. Only original replacement parts may be used.
NOTICE!
Check the inlet and outlet grille for contamination on a regular basis.
n In accordance with the operating conditions,
the units must be checked as and when
required, but at least once per year
cialist to ensure that they are in a condition that
is safe to use
n Keep the units free of dust and other debris
n Only clean the units with a dry or moistened
cloth
n Never subject to direct jets of water
(e.g. pressure washers etc.)
n Never use abrasive or solvent-based cleaners
n Even with heavy contamination, use only suit-
able cleaners
, by a spe-
The units may only be operated with the dust filter
in place.
26
C
Cleaning the units
The unit housing must be opened to allow the
inside of the unit to be cleaned and to provide
access to electrical components.
NOTICE!
Adjustment and maintenance work may only be
carried out by authorised qualified technicians.
1. Loosen the two fastening screws [C].
2. Lift up the service flap and unhook the top
lugs.
4. Clean the evaporator fins, for example with a
lukewarm soap solution (or similar).
NOTICE!
When cleaning the exchanger
must be taken because the fine aluminium fins
bend very easily.
5. Never subject to direct jets of water
6. Rinse with clean water to remove any
remaining soap.
7. Clean the internal surfaces of the unit and
the fan blade.
8. Clean the condensate trap and the connection nozzle.
9. Once cleaning has been completed, the unit
should be dried. T
electrical components!
10. Re-install all dismantled components in
reverse order
11. Carry out a unit function check and electrical
safety check.
ake particular care with
.
, particular care
.
3. Clean the condenser fins by blowing, with
suction or using a smooth brush.
WARNING!
An electrical safety check must be carried out in
accordance with VDE 0701 after any work on
the units.
27
REMKO LTE
10.2 Maintenance protocol
Unit type:
--------------------------------
010203040506070809101112131415161718192
Unit cleaned - outside -
Unit cleaned - inside -
Fan blade cleaned
Fan housing cleaned
Condenser cleaned
Evaporator cleaned
Fan function checked
Air-inlet grid with filter cleaned
Unit checked for damage
Safety devices checked
All fastening screws checked
Electrical safety check
Unit number:
---------------------------------------
0
Test run
Comments: ...................................................................................................................................................
.............................................................................................................................................................................
01. Date: .............
...............................
Signature
06. Date: ............
...............................
Signature
11. Date: ............
...............................
Signature
16. Date: ............
...............................
Signature
02. Date: .............
...............................
Signature
07. Date: .............
...............................
Signature
12. Date: .............
...............................
Signature
17. Date: .............
...............................
Signature
03. Date: .............
...............................
Signature
08. Date: .............
...............................
Signature
13. Date: .............
...............................
Signature
18. Date: .............
...............................
Signature
04. Date: .............
...............................
Signature
09. Date: .............
...............................
Signature
14. Date: .............
...............................
Signature
19. Date: .............
...............................
Signature
05. Date: .............
...............................
Signature
10. Date: .............
...............................
Signature
15. Date: .............
...............................
Signature
20. Date: .............
...............................
Signature
Unit to be maintained only by authorised specialists in accordance with the statutory regulations.
28
11 Exploded view of unit and spare parts
5
6
4
3
2
1
7
8
9
10
11
12
13
14
15
16
17
19
18
20
21
22
23
24
25
26
27
28
29
30
31
25
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
50
51
52
53
54
49
11.1 Exploded view of the unit LTE 50/60/80
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
29
REMKO LTE
11.2 Spare parts list LTE 50/60/80
No. Designation LTE 50 LTE 60 LTE 80
1 Lock for sealing flap
2 Air-inlet grille
3 Dust filter
4 Unit housing
5 Control panel
6 Filter grill, interior
7 Evaporator fin package cpl.
8 Top separating panel
9 Transportation bracket
10 Side covering, right
11 Support frame
12 Fan blade
13 Engine mounting cpl.
14 Drive clutch
15 Fan motor
16 Hose clamp 3/8" x 12 mm with O-ring
17 Condensate container cpl.
18 Taper plug
19 Magnetic float compl.
20 Dry filter
21 Humidity / temp. probe cover
22 Humidity / temp. probe
23 Humidity / temp. probe holder
24 NTC evaporator probe
25 NTC condenser probe
26 Condensate tank slide rail (left, right)
On request by providing the
serial number
27 Condensate guide panel (left, right)
28 Magnetic contact retaining plate
29 Pump mains power unit with magnetic contact and cable
30 Fastening plate for water stop switch
31 Water stop switch (reed contact)
32 Side covering, left
33 Hub cover cap
34 Wheel screw
30
No. Designation LTE 50 LTE 60 LTE 80
35 Wheel
36 Wheel
37 Triangular bracket
38 Condensate tank fastening plate
39 Base plate
40 Compressor, cpl.
41 Solenoid valve
42 Coil for solenoid valve
43 Housing cover
44 Operating condenser
45 Control board
46 Switch cabinet housing
47 Rear wall, housing parts
48 Stand
49 Rubber stopper, stand (2 pieces / set)
50 Strain relief
51 Axle
52 Axle fastening plate
53 Rubber stopper, base plate (4 pieces / set)
54 Mains cable with plug
Spare parts not illustrated
Sealing screw with O-ring
Magnetic float brake
O-ring
Condensate tank with pump cpl.
Tank pass-through
On request by providing the
serial number
On request by providing the
serial number
Check valve
Hose 1m
To assure the correct delivery of spare parts, please always provide the unit type with its corresponding
serial number (see name plate).
31
REMKO LTE
12 Index
A
Air dehumidification, description ............. 9
Automatic restart after power failure ......... 16
C
Care ................................. 26
Care and maintenance ................... 26
Clean dust filter ......................... 26
Clean units ............................ 27
Cleaning the dust filter ................... 26
Cleaning the units ....................... 27
Commissioning ......................... 16
Condensate removal ..................... 21
Condensate trap, function ................. 1
Condensation heat ...................... 11
Condensation of water vapour ..............11
Control and display panel: .................17
Customer service ....................... 24
1
D
Display of error codes .................... 25
Disposal of equipment .....................6
Drying materials ........................ 10
E
Electrical wiring ......................... 15
Electrical wiring diagram .................. 15
Environmental protection ...................6
Error codes, display and description ......... 25
Exploded view drawing ................... 29
Exploded view of the unit ................. 29
L
Locations for use ........................12
M
Maintenance ........................... 26
Malfunction ............................ 24
O
Operating sequence ..................... 12
Operational malfunctions ..................24
Ordering spare parts ..................... 30
R
Relative air humidity ..................... 10
S
Safety
Dangers of failure to observe the safety
notes ............................... 4
General ............................. 4
Identification of notes ................... 4
Instructions for the operator .............. 5
Note for inspection work .................5
Note for installation work ................ 5
Note for maintenance work .............. 5
Personnel qualifications ................. 4
Safety-conscious working ................4
Unauthorised modification ...............6
Unauthorised replacement part manufacture . 6
Setting up the unit ....................... 14
Shutdown ............................. 25
Spare parts list ......................... 30
Starting the unit .........................16
T
Transporting the unit ..................... 14
Troubleshooting and customer service ....... 24
U
Unit transport .......................... 14
W
Warranty ............................... 6
Water vapour content .................... 10
Water vapour, condensation ............... 11
32
33
REMKO LTE
34
Consulting
Thanks to intensive training,
our consultants are always
completely up-to-date in terms
of technical knowledge. This has
given us the reputation of being
more than just an excellent,
reliable supplier:
REMKO, a partner
helping you find solutions to
your problems.
Distribution
REMKO offers not just a well
established sales network both
nationally and internationally, but
also has exceptionally highlyqualified sales specialists.
REMKO field staff are more than
just sales representatives: above
all, they must act as advisers to
our customers in air conditioning
and heating technology.
SFlbCustomer Service
Our equipment operates
precisely and reliably. However,
in the event of a fault, REMKO
customer service is quickly at
the scene. Our comprehensive
network of experienced dealers
always guarantees quick and
reliable service.
REMKO INTERNATIONAL
… and also right in your neighbourhood!
Make use of our experience and advice
We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!
REMKO GmbH & Co. KG
Air conditioning and heating technology
Im Seelenkamp 12 D-32791 Lage
Postfach 1827 D-32777 Lage
Telephone +49 5232 606-0
Telefax +49 5232 606-2 60
E-mail info@remko.de
Website www.remko.de
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