Munters MK30D User manual

Originalinstructions
User´sManual
MK30D,MK45D,MK60D,MK90D
Dehumidifier
Coolingunit
190TEN-1071-C1304 ©MuntersEuropeAB2013

Importantuserinformation
Intendeduseofequipment
Munters dehumidifiers are intended to be used for the
dehumidification of air. All other uses of the equipment,
or use which is contrary to the instructions given in
this manual, can cause personal injury and/or machine
damage.
Warrantyandobligations
Thewarrantyper
iod is valid from the date the
equipment left our factory, unless otherwise advised
in writing. The warranty is limited to a free exchange
including free freight of the faulty unit or components,
which have failed as a result of faulty quality or defects in
manufacture. Munters guarantees that the unit supplied
has undergone thorough testing to ensure that it meets
the specifications given here. All warranty claims must
include proof that the fault has occurred within the
warranty period and that the unit has been used in
accordance with the specifications. All claims must
specify the unit type and manufacturing number. This
information is stamped on the unit identification plate,
see the section Marking.
It is a condition of the warranty that the unit for the full
warranty period is serviced and maintained by a qualified
Munters engineer or Munters approved engineer.
Access to specific and calibrated test equipment is
necessary. The service and maintenance must be
documented for the warranty to be valid.
Always contact Munters for service or repair. Operating
faults can occur if the unit is maintained insufficiently or
incorrectly.
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 KISTA Sweden
e-mail: [e-mail]
Safety
In this publication hazardous activities are indicated and
preceded by the common hazard symbol.
WARNING!
isusedinthispublicationtoindicateapossibledangerthat
couldleadtopersonalinjury. Aninstructionisnormallygiven,
followedbyashortexplanation,plusthepossibleeffectsif
theinstructionisnotfollowed.
CAUTION!
isusedinthispublicationtoindicateapossibledangerthat
couldleadtodamagetothemachineorotherequipment
and/orcauseenvironmentaldamage. Aninstruction
isnormallygiven,followedbyashortexplanation,plus
thepossibleenvironmentaleffectiftheinstructionisnot
followed.
NOTE! Usedtoaccentuatesupplementaryinformation
thatisrequiredforproblem-freeuseoroptimaluseofthe
unit.
ii Importantuserinformation 190TEN-1071-C1304

Tableofcontents
Importantuserinformation ............... ii
Intendeduseofequipment ........... ii
Warrantyandobligations ............. ii
Note! ................................... ii
Safety .................................. ii
Tableofcontents ........................... iii
1 Introduction ................................. 1
1.1 General ................................ 1
1.2 UnpackingoftheunitsMK30D-
MK60D ................................. 1
1.3 Unpackingoftheunit(MK90D) ....... 1
1.4 Marking ................................ 2
1.5 Transportofthedehumidifier ......... 3
1.6 Stacking ................................ 3
1.7 Operationprinciple .................... 3
1.8 Maincomponents ..................... 4
1.9 Watertank(MK30D-MK60D) ......... 4
1.10 Driptray(MK90D) ..................... 5
2 Installation ................................... 6
2.1 Electricalconnection .................. 6
2.2Connectionofhumidistat ............. 7
2.3 Remotesignals ....................... 7
3 Operation .................................... 8
3.1 Controlpanel .......................... 8
3.2 Switchingon/off ....................... 9
3.3 Internalhygrostatoperation .......... 10
3.4 Externalhygrostatoperation ......... 10
3.5 Hourcounter ........................... 11
3.6 Displaytexts ........................... 12
3.7 Textdisplayswhennotconnectedto
mains ................................... 13
3.8 Replacingthememorybattery ....... 14
3.9 Errormessages ....................... 15
3.9.1 MK30D-MK60D ................ 15
3.9.2 MK90D ......................... 16
4 MaintenanceandService ................. 17
4.1 Monthlypreventivemaintenance
(MK30D-MK60D) ..................... 17
4.2 Monthlypreventivemaintenance
(MK90D) ............................... 17
4.3 Annualpreventivemaintenance
(MK30D-MK90D) ..................... 18
5 Troubleshooting ........................... 19
6 TechnicalSpecification .................... 20
6.1 DimensionsMK30D-MK60D ......... 20
6.2 DimensionsMK90D .................. 20
6.3 Technicaldata ......................... 21
7 Wiringdiagrams ............................ 22
7.1 MK30D-MK60D ....................... 22
7.2 MK90D ................................. 24
8S
parepartlists .............................. 26
8.1 MK30D-MK60D ....................... 26
8.2 MK90D ................................ 28
190TEN-1071-C1304 Tableofcontents iii

Dehumidifier MKD-series
1Introduction
1.1 General
The Munters MKD-series dehumidifiers are available in four (4) different sizes and they can easily be moved
to locations where dehumidification of air is required.
WARNING!
Itistheresponsibilityoftheoperatortoreadandunderstandthisservicemanualandotherinformationprovided,
andtousethecorrectoperatingprocedures.
Read the entire manual before the initial start-up of the dehumidifier. Awareness of the correct operating
procedure for the machine and its safety devices is important, to avoid damage or injury.
1.2 UnpackingoftheunitsMK30D-MK60D
WARNING!
Ifthedehumidifierhasbeenlaiddownduringtransport,itisimperativethatyouplaceitinuprightpositionforat
least1hourbeforeputintoservice!
Follow these steps to unwrap the unit and make it ready for use
1 Open the cardboard box in the top
2 Tilt the box with the handle and wheels towards the floor
3 Pull the handle of the dehumidifier and wheel the dehumidifier out of the box still lying down
4 Tilt the dehumidifier to an upright position
5 Loosen the knobs, pull the handle up to the desired height and retighten the knobs
6 Remove the protective foil on the control panel
1.3 Unpackingoftheunit(MK90D)
WARNING!
Ifthedehumidifierhasbeenlaiddownduringtransport,itisimperativethatyouplaceitinuprightpositionforat
least1hourbeforeputintoservice!
1Unwr
ap and lift the box from the dehumidifier
2Li
ft the dehumidifier clear of the pallet
3C
onnect the drain outlet stub which is supplied with the dehumidifier
1Introduction 190TEN-1071-C1304

Dehumidifier MKD-series
1.4 Marking
MK30D-MK60D: The identification plate is placed behind the bucket inside the dehumidifier.
MK90D:The identification plate is placed at the side of the dehumidifier
D
D
3-32
190TEN-1071-C1304 Introduction 2

Dehumidifier MKD-series
1.5 Transportofthedehumidifier
NOTE! Observelocalworkingenvironmentrulesasregardsheavylifting
Twopeopleoracranecanmovethedehumidifier. See the instructions below
2 people Hoist/crane
Lift as shown below Lifting using a cargo strap
The wheels are positioned such that the machine can be pulled upstairs without damage to the cabinet or
stairs.
1.6 Stacking
Max. two dehumidifiers should be stacked on top of each other. Press the handle of the lower dehumidifier
to the bottom before stacking. The handle then fits a notch on the upper dehumidifier.
1.7 Operationprinciple
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)
3Introduction 190TEN-1071-C1304

Dehumidifier MKD-series
Due to the repeated air circulation through the dehumidifier, the air humidity is continuously reduced
whereby achieving rapid but gentle drying. The dehumidifier will operate continuously if not a humidity
sensor is connected.
1.8 Maincomponents
1Handle
2 Supply air inlet with PPI filter behind the grill
3 Water tank (MK30D-MK60D)
4 Control panel
5 Power cable
6Dryairoutlet
7Wheels
1.9 Watertank(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. Operation of the unit is not possible while the water tank is removed.
190TEN-1071-C1304 Introduction 4

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)
5Introduction 190TEN-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 blown out 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.
2.1 Electricalconnection
The dehumidifier is complete with cable and plug and ready for connection to a 230V/50Hz socket with a
10A fuse or a 16A circuit breaker.
190TEN-1071-C1304 Installation 6

Dehumidifier MKD-series
2.2 Connectionofhumidistat
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.
2.3 Remotesignals
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.
7Installation 190TEN-1071-C1304

Dehumidifier MKD-series
3 Operation
3.1 Controlpanel
All functions are controlled from the integrated control panel.
1 Display
2 Function keys
3 Status
indicators
4 Main switch
1
2
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-C1304 Operation 8

Dehumidifier MKD-series
3.2 Switchingon/off
The table below shows operation of the on/offfunction and display texts
Key Display
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 external hygrostat set point is reached
Switch off
The green LED indicates active dehumidification
9Operation 190TEN-1071-C1304

Dehumidifier MKD-series
3.3 Internalhygrostatoperation
Step Key Feedback
Press and
hold
HYG SET RHxxx% - will flash for 5 seconds. The dehumidifier will then
switch to internal hygrostat controlled operation with set point (once the
set point is reached, the display will show INT HYG STOP).
Press +/- briefly to set the RH% value in during the above 5 second period.
The new value will be saved after a further 5 second period after the last
key is pressed
Press HYG OFF- will flash for 5 seconds. The dehumidifier will then switch to
constant operation
3.4 Externalhygrostatoperation
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-C1304 Operation 10

Dehumidifier MKD-series
3.5 Hourcounter
The built in hour counter logs the total number of operating hours (cannot be reset) and the number of
hours left until the next service, which can be adjusted. The service hour counter is disabled upon delivery.
Step Key Feedback
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
Press SET SERVICE OFF- deactivates the service timer function
11 Operation 190TEN-1071-C1304

Dehumidifier MKD-series
3.6 Displaytexts
The table below shows how to operate the operating information functions
Key Feedback
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 total number of operating hours
for the machine. Cannot be reset
190TEN-1071-C1304 Operation 12

Dehumidifier MKD-series
3.7 Textdisplayswhennotconnectedtomains
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 Feedback
hold down
and
Displays total energy consumption in kWh.
press once
hold down
Shows total number of operating hours for the dehumidifier
press once
13 Operation 190TEN-1071-C1304

Dehumidifier MKD-series
3.8 Replacingthememorybattery
If the hour counters cannot be read when disconnected from mains, it is probably due to flat memory
battery. Replacement procedure:
WARNING!
Alwaysdisconnectfromthemainsbeforechangingbattery
Action
1 Slacken the screws on both side of the
control panel, and carefully lift the
panel up using the top edge
2 Cut the cable tie holding the battery. Replace the battery, using a new cable tie max. 2.5 mm wide.
Use Alkaline AAAbatteries only Illustration of PCB with battery included in the wiring diagram
on page 22.
190TEN-1071-C1304 Operation 14

Dehumidifier MKD-series
3.9 Errormessages
An overwiev of possible errors which prevent normal operation.
3.9.1 MK30D-MK60D
Errormessages Illustration Cause Remedy
Yellow light on centre
LED with emptying
symbol and FULL on
display.Seeemptying
guide below, or check
pump outlet
Water container is full
or fault on water pump
(accessory)
See emptying guide
below, or check pump
outlet
Red light on right
warning LED HIGH
TEMP on display
Pressure or temperature
in high pressure element
too high
Check filter and
dehumidifier for dirt
in airways
Red light on right
warning LED
AMBIENT TEMP
on display
Room temperature out
of normal range
Place the dehumidifier in
the specified temperature
range, between 3°-32ºC
SENSOR FAIL
1: EVAP FAIL
Evaporator
thermometer defective
Requires an authorised
service technician
2: COND FAIL
Condenser
thermometer defective
Requires an authorised
service technician
Red light on right
warning LED
SENSOR FAIL on
display. One of the
internal sensors is
defective. Use the +/-
keys to toggle between 3
possible errors
3: ROOM FAIL
The internal room
thermometer is
defective
Requires an authorised
service technician
Red light on right
warning LED LP
STOPon display
Leak in cooling circuit Requires an authorised
service techn ician
15 Operation 190TEN-1071-C1304

Dehumidifier MKD-series
3.9.2 MK90D
Errormessages Illustration Cause Remedy
Red light on right
warning LED HIGH
TEMP on display .
Water container is full
or fault on water pump
(accessory)
See emptying guide
below, or check pump
outlet
Red light on right
warning LED HIGH
TEMP on display
Pressure or temperature
in high pressure element
too high
Check filter and
dehumidifier for dirt
in airways
Red light on right
warning LED
AMBIENT TEMP
on display
Room temperature out
of normal range
Place the dehumidifier
in the specified
temperature range,
between 3°-32°
Red light on right
warning LED
SENSOR FAIL on
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
Requires an authorised
service technician
2: COND FAIL
Condenser
thermometer defective
Requires an authorised
service technician
3: ROOM FAIL
The internal room
thermometer is
defective
Requires an authorised
service technician
Red light on right
warning LED LP
STOPon display
Leak in cooling circuit Requires an authorised
service technician
190TEN-1071-C1304 Operation 16

Dehumidifier MKD-series
4 MaintenanceandService
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 achieve trouble-free operation. This section contains
description of the recommended monthly and annual maintenance.
CAUTION!
Alwaysdisconnectthepowercablefromtheunitbeforedoinganypreventivemaintenance!
4.1 Monthlypreventivemaintenance(MK30D-MK60D)
Follow this procedure to carry out the monthly preventive maintenance:
1 Open 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 dirty. Change the filter if it is very dirty.
3 Clean the water tank
4 Remove the two screws in each side and tilt the jacket outwards about 30º
5 Lift the jacket up and clear of the dehumidifier
6 Clean the evaporator coil by brushing with a soft brush and vacuum-clean/compressed air. Mount
the jacket and put the water tank back in place Note! Check that the water tank is fitted correctly
4.2 Monthlypreventivemaintenance(MK90D)
Follow this procedure to carry out the monthly preventive maintenance:
1 Open the front grill by tilting it outwards
2Removethefilter. Either rinse it with lukewarm soapy water or vacuum clean it if the filter is only a
little dirty. Change the filter if it is very dirty
3CleanthedriptrayNote !When you refit the drip tray, make sure that the back edge of the drip tray
rests on the edge inside the dehumidifier.
4 Remove the two screws in each side and tilt the jacket outwards about 30°
5 Lift the jacket up and clear of the dehumidifier
6 Clean the evaporator coil by brushing with a soft brush and vacuum-clean/compressed air
7 Mount the jacket
17 MaintenanceandService 190TEN-1071-C1304