Munters dehumidifiers are intended to be used for the
dehumidification of air. All other uses of the equipment,
or use which is contrar y to the instructionsgiven in
this manual, can cause personal injury and/or machine
damage.
Warrantyandobl
Thewarrantyper
equipment left o
in writing. The
including fre
whichhave fai
manufacture.
has undergon
the specifica
include pro
warranty pe
accordance
specify th
informati
see the se
It is a condition of the warranty that the unit for the full
warranty period is serviced and maintained bya qualified
Munters engineer or Munters approvedengineer.
Access to specific and calibrated test equipment is
necessary. The service and maintenance must be
documented for the warranty to be valid.
Always
faults
incor
e unit type and manufacturing number. This
on is stamped on the unit identificationplate,
ction Marking.
contact Munters for service or repair. Operating
can occur if the unit is maintained insufficiently or
rectly.
iod is valid from the date the
ur factory,unless otherwise advised
warranty is limited to a free exchange
e freight of the faulty unit or components,
led as a result of faulty quality or defects in
Munters guarantees that the unit supplied
e thorough testing to ensure that it meets
tions given here. All warranty claims must
of that the fault has occurred within the
riod and that the unit has been used in
with the specifications. All claims must
igations
Note!
The contents of this publication can be changed without
prior notice. This publication contains information
which is protected by copyright laws. No part of this
publication may be reproduced,stored in a system for
information retrieval or be transmitted in any form, in
any manner without Munters’ written consent. Please
send any comments regarding the contents of this
publication to:
Munters Europe AB
Technical Documentation
P O Box 1150
SE - 164 26 KISTASweden
e-mail: t-doc@munters.se
Safety
In this publication h azardous activities are indicated and
preceded by the common hazard symbol.
Twopeopleoracranecanmovethedehumidifier. See the instructions below
2 peopleHoist/crane
Lift as shown belowLifting using a c argo strap
Dehumidifier MKD-series
The wheels are positioned such that the machine can be pulled upstairs without damage to the cabinet or
stairs.
1.6Stacking
Max. two dehumidifiers should be stacked on top of eachother. Press the handle of the lower dehumidifier
to the bottom before stacking. The handle then fits a notch on the upper dehumidifier.
1.7Operationprinciple
The following describes the air flow through the dehumidifier:
1.A fan draws in humid air through a filter to the dehumidifier
2.The air is cooled down and humidity/water drops are led down to the water tank
3.The air is reheated by the operation of the dehumidifier (approx. increase in temperature is +5 °C)
3Introduction190TEN-1071-C1304
Dehumidifier MKD-series
Due to the repeated air circulation thr
whereby achieving rapid but gentle d
sensor is connected.
1.8Maincomponents
ough the dehumidifier, the air humidity is continuously reduced
rying. The dehumidifier will operate continuously if not a humidity
1Handle
2Supply air inlet with PPI filter behind the grill
3Water tank (MK30D-MK60D)
4Control panel
5Powercable
6Dryairoutlet
7Wheels
1.9Watertank(MK30D-MK60D)
Water is collected in the water tank. Alternatively, you can also setup the dehumidifier for permanent
drainage with the adapter for hose connection . When the water tank is full, the dehumidifier shuts off
automatically. Operationof the unit is not possible while the water tank is removed.
190TEN-1071-C1304Introduction4
Dehumidifier MKD-series
1.10 Driptray(MK90D)
The drip tray catches condensation and is fitted with an outlet branch that has a 1/2" tapping (enclosed)
5Introduction190TEN-1071-C1304
Dehumidifier MKD-series
2Installation
Place the dehumidifier
■in the middle of a room if possible to ensure good air circulation
■where air can be sucked in freely through the filter and blownout on the opposite side
■with a minimum distance on the supply air side from a wall of about 600 mm. The minimum distance on
the dry air side should be 3 m
■away from any source of heat e.g. a radiator
In addition, ensure that windows and doors are closed in the room to be dehumidified.
2.1Electricalconnection
The dehumi
10A fuse o
190TEN-1071-C1304Installation6
difier is complete with cable and plug and ready for connection to a 230V/50Hz socket with a
r a 16A circuit breaker.
Dehumidifier MKD-series
2.2Connectionofhumidistat
The connection socket for the humidistat is located at the power cable entry.
The humidistat shall be mounted 1–1.5 m. above the floor and positioned so that it is not exposed directly to
dry air from the unit or incoming moist air from opening and closing doors. It may not be placed close to a
heat source or so that it is exposed to direct sunlight. The humidistat shall be a single stage humidistat and
connected so that the controlling circuit closes as relative humidity increases. The connecting cable shall be
screened and have copper conductors with a minimum cross-section area of 2 x 0.75 mm2.
2.3Remotesignals
If an external alarm or run signal is required use terminal 24 and 25 which are connected by an electronic
relay. The run signal to be connected at terminal 22 and 23. If an error occurs there is no longer connection
and the alarm will start. Max 24V DC and 1,5mA.
7Installation190TEN-1071-C1304
Dehumidifier MKD-series
3Operation
3.1Controlpanel
All functions are controlled from the integrated control panel.
1Display
2 Function keys
3 Status
indicators
1
2
4 Main switch
3
4
Main functions
■Manual or auto operation (built-in adjustable hygrostat).
■External hygrostat socket.
■.Display of temperature, relative air humidity, hours and kWh consumption
■Hour counter and kWh consumed without 230V connection.
■Adjustable service interval counter.
Operation described in the user guide in this manual.
190TEN-1071-C1304Operation8
3.2Switchingon/off
The table below showsoperation of the on/offfunction and display texts
KeyDisplay
ON constant operation
INT HYG ON operation controlled by internal hygrostat
INT HYG STOP if internal hygrostat set point is reached
EXT HYG ON operation controlled by external hygrostat
EXT HYG STOP if exter nal hygrostat set point is reached
Switch off
Dehumidifier MKD-series
The green LED indicates active dehumidification
9Operation190TEN-1071-C1304
Dehumidifier MKD-series
3.3Internalhygrostatoperation
StepKeyFeedback
Press and
hold
HYG SET RHxxx% - will flash for 5 seco
switch to internal hygrostat con
set point is reached, the displa
trolled operation with set point (once the
ywillshowINT HYG STOP).
nds. The dehumidifier will then
Press +/- briefly to set the RH% value in during t he above5 second period.
The new value will be saved after a further 5 second period after the last
key is pressed
PressHYG OFF- will flash for 5 seconds. The dehumidifier will then switch to
constant operation
3.4Externalhygrostatoperation
If an external hygrostat is connected, the machine will automatically switch over to using it. Any adjustment
of the set point must now be made on the external hygrostat. (once the set point is reached, the display will
show EXT HYG STOP)
190TEN-1071-C1304Operation10
Dehumidifier MKD-series
3.5Hourcounter
The built in hour counter logs the total number of operating hours (cannot be reset) and the numberof
hours left until the next service, which can be adjusted. The service hour counter is disabled upon delivery.
StepKeyFeedback
Press and
hold
SERVICE xxxxh shows the number of hours to the next authorised
service. This value is saved automatically after 5 seconds of flashing, and
the function will activate if not already activated. When the set number
of hours for service intervals has expired, the display will switch to
SERVICE.Press + /- briefly to set a new service value. The new value will
be saved 5 seconds after the last key is pressed
Press +/- briefly to set a new service value. The new value will be saved 5
seconds after the last key is pressed
PressSET SERVICE OFF- deactivates the service timer function
11Operation190TEN-1071-C1304
Dehumidifier MKD-series
3.6Displaytexts
The table below shows how to operate the operating information functions
KeyFeedback
XXºCshows the current room temperature
Actual RH% shows the actual relative air humidity
value measured
XX kWh, shows total energy consumption.
Cannot be reset
xxxxh shows the t
for the machine.
otal number of operating hours
Cannot be reset
190TEN-1071-C1304Operation12
Dehumidifier MKD-series
3.7Textdisplayswhennotconnectedto mains
The machine has a built-in battery to allow reading text displays when not connected to the mains. The
following texts can be read when not connected to the mains:
Key
hold down
and
press once
hold down
Feedback
Displays total energy consumption in kW h.
Shows total number of operating hours for the dehumidifier
press once
13Operation190TEN-1071-C1304
Dehumidifier MKD-series
3.8Replacingthememorybattery
If the hour counters cannot be read when disconnected from mains, it is probably due to flat memory
battery. Replacement procedure:
WARNING!
Alwaysdisconnectfromthemainsbeforechangingbattery
Action
1Slacken the screws on both side of the
control panel, and carefully lift the
panel up using the top edge
2Cut the cable tie holding the battery. Replace the battery, using a new cable tie max. 2.5 mm wide.
Use Alkaline AAA batteries
on pag
e 22.
only Illustration of PCB with battery included in the wiring diagram
190TEN-1071-C1304Operation14
Dehumidifier MKD-series
3.9Errormessages
An overwiev of possible err ors which prevent normal operation.
3.9.1MK30D-MK60D
ErrormessagesIllustrationCauseRemedy
Yellow light on centre
LED with emptying
symbol and FULL on
display. Seeemptying
guide below, or check
pump outlet
Red light on right
warning LED HIGHTEMP on display
Red light on right
warning LED
AMBIENT TEMP
on display
Water container is full
or fault on water pump
(accessory)
Pressure or temperature
in high pressure element
too high
Room temperature out
of normal range
See emptying guide
below, or check pump
outlet
Check filter and
dehumidifier for dirt
in airways
Place the dehumidifier in
the specified temperature
range, between 3°-32ºC
Red light on right
warning LED
SENSOR FAILon
display. One of the
internal sensors is
defective. Use the +/keys to toggle between 3
possible errors
Red light on right
warning LED LPSTOPon display
SENSOR FAIL
1: EVAP FAIL
Evaporator
Requires an authorised
service technician
thermometer defective
2: COND FAIL
Condenser
Requires an authorised
service technician
thermometer defective
3: ROOM FAIL
The internal room
Requires an authorised
service technician
thermometer is
defective
Leak in cooling circuitRequires an authorised
service techn ician
15Operation190TEN-1071-C1304
Dehumidifier MKD-series
3.9.2MK90D
ErrormessagesIllustrationCauseRemedy
Red light on right
warning LED HIGHTEMP on display .
Red light on right
warning LED HIGHTEMP on display
Red light on right
warning LED
AMBIENT TEMP
on display
Water container is full
or fault on water pump
(accessory)
Pressure or temperature
in high pressure element
too high
Room temperature out
of normal range
See emptying guide
below, or check pump
outlet
Check filter and
dehumidifier for dirt
in airways
Place the dehumidifier
in the specified
temperature range,
between 3°-32°
Red light on right
warning LED
SENSOR FAILon
display. One of the
internal sensors is
defective. Use the +/keys to toggle between 3
possible errors
SENSOR FAIL
1: EVAP FAIL
Evaporator
thermometer defective
2: COND FAIL
Condenser
thermometer defective
3: ROOM FAIL
The internal room
thermometer is
defective
Requires a n authorised
service technician
Requires a n authorised
service technician
Requires a n authorised
service technician
Red light on right
warning LED LP
Leak in cooling circuitRequires a n authorised
service technician
STOPon display
190TEN-1071-C1304Operation16
Dehumidifier MKD-series
4MaintenanceandService
The unit includes mechanical and electrical parts and the unit is often placed in a rough environment where
the components are exposed to different climate conditions. Therefore the unit will need preventive
maintenance on a regular basis.
Proper maintenance of the unit is necessary in order to achievetrouble-free operation. This section contains
description of the recommended monthly and annual maintenance.
CAUTION!
Alwaysdisconnectthepowerc
4.1Monthlypreventivemaintenance(MK30D-MK60D)
Followthis procedure to carr y out the monthly preventive maintenance:
1Open the front grill by tilting it outwards
2Removethefilter. Either rinse it with lukewarm soapy water or vacuumclean it if the filter is only
a little dir ty. Change the filter if it is very dirty.
If the dehumidifier will not restart, contact Munters. This also applies if the machine runs without
condensing any water. There may be a fault on the cooling c ircuit which will require a service technician
MuntersLtd
Air Treatment
Pathfinder Place 10Ramsay Cour t
Hinchingbrooke Business Park
Huntingdon PE29 6FY
Cambs
United Kingdom
Tel: +44 1480 432243
Fax: +44 1480 413 147
info@munters.co.uk
http://www.munters.co.uk