User`s Manual - du
Contents
1. 14 2 10 1 Location requirements 15 2 11 Pre start 15 2 11 1 Remote 15 2 11 2 Continuous process air fan Operation 15 2 11 3 Humidity control alternatives 15 2 11 4 Reactivation temperature 16 2 11 5 Control accuracy 16 2 12 Pre start checks AA 16 2 12 1 Pre Start Checklist 16 2 13 Airflow Check and Adjustment 17 2 13 1 17 2 13 2 Process fan speed control IP version 18 3 Operation 19 3 1 EE E 19 id 2Safelty ix use eec ett ead 19 3 9 QUICK Stop ote 19 3 4 Operating the 20 3 4 1 Initial start up Manual mode hha EE 20 3 4 2 Inital start up Automatic mode AUTO regulating to set point 20 3 4 3 Inital start up Automatic mode AUTO external control 8 55 Gontro PANG Service and Maintenance 41 Safety 4 2 Regular service and maintenance 4 3 Service indicator lamp 4 3 1 Filter change needed 4 3 2 Service requirements 4 4 Service and Maintenance Schedule Fault Finding eee es 5 1 General esee 52 S2. 38 7 Control system ACD 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters 7 4 7 Window 4 Motor status The set point is set in window 13 among basic settings see section 7 5 4 Window 13 Reactivation temperature Window 4 provides a quick overview as to whether the rotor as well as the process and reactivation fan motors are running On is denoted by 001 and Off by 000 4 MOTORS PROCESS FAN 001 REACT FAN 000 DRIVE MOTOR 000 Figure 7 9 window 4 PROCESS FAN Process fan REACT FAN Reactivation fan DRIVE MOTOR Drive motor for dehumidifier rotor 7 4 8 Window 5 Reactivation power 7 4 9 Window 6 Alarm Window 5 displays how much of the reactivation heater s total power is used at the time of reading specified in percent When the gas burner is used for reactivation it is vital to adjust the values in this window so that the min and max values are correct See separate supplementary document for adjusting max and min values for the gas burner See section 3 5 7 8 in the supplement 5 HEATER HEATER EFFECT 067 96 Figure 7 10 window 5 HEATER EFFECT Reactivation heater power being used Window 6 contains a number of alarm functions Each type of alarm is represented by a specific digit For a description of corrective actions for each alarm see chapter 5 Fault Finding The red lamp on the dehumidifier illuminates with a steady glow if an alarm is tri
3. Inspecting rotor housing replacing rotor gaskets if necessary Table 4 1 Service and maintenance schedule 190TEN 1041revC 4 Service and Maintenance 25 M Munters Dehumidifier ML17E MLT30E 5 Fault Finding 5 1 General The purpose of this chapter is to provide guidance in basic fault finding and provide instructions for corrective actions to remedy any faults Wiring diagrams can be useful when fault finding 5 2 Safety WARNING Adjustments maintenance and repairs must only be carried out by qualified personnel N 5 3 Fault Finding The red alarm lamp together with the ACD windows constitute the primary source of information for fault finding when an alarm has been triggered and the unit has stopped An alarm indicator is reset automatically once the problem that triggered the alarm has been rectified Go through the fault localisation list below before contacting Munters The list provides help in identifying types of faults that are easy to remedy without the assistance of specially trained personnel Always switch off the main power switch before removing the unit s panels Fault Symp tom Unit has stopped Indicators Lamps and display all off Possible cause Power supply failure Main power switch No 1 is in the 0 posi tion Fuses FU27 and FU28 have tripped Circuit Breaker QM25 tripped due to a wir ing fault Correctiv
4. number is often needed duting contacts with Munters 10 MUNTERS Software XX XXXX Sweden XXX XXXX Figure 7 11 Information window 40 7 Control system ACD 190TEN 1041revC Dehumidifier ML17E MLT3OE Munters 7 5 2 Window 11 Continual operation of process air fan In certain applications the process air fan can run continuously irrespective of whether or not dehumidifying is in progress This will function only when the dehumidifier is in the AUTO mode Continual process air operation is set in this window Press V or A to change the set value TE UP CONT PRO FAN 001 O NO 1 YES Figure 7 12 window 11 If continuous process ait operation is not selected the fan will function as normal This means that it will only work when dehumidification is needed 001 Yes continuous operation 000 Preset No not continuous operation 7 5 3 Window 12 Humidity control alternatives This window is used to program which type of humidity control is relevant A digit representing the seleted type see below is set in the window This setting determines which of the operating windows 1A 1C will be displayed in window mode 1 12 BEIS HUM CONTROL 0 Int 000 2 Contr Figure 7 13 window 12 000 Internally set set point set in window 1A 001 Externally set set point displayed in window 1B 002 External regulation of reactivation heater see window 1C 7 5 4
5. 39 02 488 1171 info munters it JAPAN Munters KK TOKYO 174 Tel 81 0 3 5970 0021 Fax 81 0 3 5970 3197 KOREA Munters SEOUL Tel 82 0 2 865 8771 Fax 82 0 2 865 8737 MEXICO Munters de Mexico S A de C V APODACA N L Tel 52 81 8262 5400 Fax 52 818262 5401 NETHERLANDS Munters Vochtbeheersing ALPHEN a d RIJN Tel 31 172 43 32 31 Fax 31 172 44 29 60 vochtbeheersing munters nl NEW ZEALAND Munters Pty Ltd AUCKLAND Tel 64 96 34 8241 Fax 64 96 34 8237 POLAND Munters Poland Sp zoo GDANSK Tel 48 58 320 01 00 Fax 48 58 320 01 19 dh munters pl SINGAPORE Munters Pte Ltd SINGAPORE Tel 65 6744 6828 Fax 65 6744 9585 SOUTH AFRICA Munters Pty Ltd JOHANNESBURG Tel 27 0 11 971 97 00 Fax 27 0 11 971 97 25 SPAIN Munters Spain SA MADRID Tel 34 91 640 09 02 Fax 34 91 640 11 32 marketing munters es SWEDEN Munters Europe AB SOLLENTUNA Tel 46 8 626 6300 Fax 46 8 754 8594 avfuktning munters se SWITZERLAND Munters AG ZURICH Tel 41 1 271 1013 Fax 41 1 271 1019 munters gl gmx ch THAILAND Munters Co Ltd BANGKOK Tel 662 645 2708 Fax 662 645 2710 UNITED KINGDOM Munters UK Ltd HUNTINGDON Tel 44 1480 432 243 Fax 44 1480 413 147 info munters co uk USA Munters Corporation AMESBURY Tel 1 978 241 1100 Fax 1 978 241 1214 www munters com
6. TIME Figure 7 17 P gain 42 7 Control system ACD 190TEN 1041revC Dehumidifier ML17E MLT30E Munters 7 5 7 Window 16 Integral time constant An integral time constant can be programmed in this window Time can be set between 0 and 999 seconds Press V or A to change the value 16 SETUP REGULATOR I HIME 2005 Figure 7 18 window 16 A 1 1 1 1 1 1 1 gt 1 1 a gt 2 1 i SET POINT aoe ers ee eee SE beggen zi 1 lt 1 W 1 a 1 gt 1 i INTEGRAL TIME 1 TOO SHORT B TOO LONG CORRECT DECREASED DEMAND TIME Figure 7 19 Integral time constant 190TEN 1041revC 7 Control system ACD 43 M Munters Dehumidifier ML17E MLT30E 8 HS21 Humidity transmitter 8 1 General When an ACD control system is delivered it comes with an HS21 humidity transmitter for fitting to a wall or duct The 521 is a 2 wire indicator that is placed where the humidity of the air is to be controlled See the instructions below for correct location In practice the HS21 works in a range of 0 99 RH Every transmitter is accurately calibrated before being sent out and so they do not require any further adjustment prior to installation 8 2 Installation and operation NOTE Never remove the dust filter from the transmitter s cover as the transmitter could easily be damaged without this protection 8 2 1 General recommendations The relative hum
7. automatically displayed when the extra set point regulates the dehumidifier For further information on connecting an extra set point see section 2 11 3 Humidity control alternatives 190TEN 1041revC 7 Control system ACD 37 M Munters Dehumidifier ML17E MLT30E 1D HUMIDITY HUMIDITY 048 RH SETV 2 050 RH Figure 7 6 window 1D HUMIDITY Actual Relative Humidity RH SETV2 Set Value 2 From this window you can only go back to the base window window 1A 1C from which you came Press button 7 4 5 Window 2 Runtime The runtime of the fans and reactivation heatet can be tead from window 2 The running hours remaining before the next scheduled maintenance service are also shown here see chapter 4 Service and Maintenance This window is solely for information No settings can be made in this window 2 RUNTIME PRO FAN 001890 h HEATER 001890 h SERVICE 001110h Figure 7 7 window 2 FANS Fan runtime HEATER Running hours reactivation heater SERVICE Running hours remaining to next recommen ded maintenance service 7 4 6 Window 3 Reactivation temperature A set point for reactivation air temperature can be specified This set point max value and current reactivation temperature can be read from this window 3 REACT TEMP R TEMP 1105C SETV TEMP 120 Figure 7 8 window 3 R TEMP Current reactivation temperature SETV TEMP Set value for reactivation temperature
8. components are rail mounted and are constructed of halogen free plastic The electrical system has been designed for up to 500 V and 60 C The ML series dehumidifiers conform to both harmonised European standards and to CE marking specifications When cold process air is to be dehumidified often in conjunction with a pre cooler condensate will readily form on the inlet side of the dehumidifier ML series dehumidifiers can therefore be supplied in an IP version in which the process air fan is encased in a specially insulated box so as to hinder the formation of condensation 6 3 Principle of operation 1 Process air 2 Dry air 3 Reactivation air 4 Wet air Figure 6 1 Operating principles The desiccant rotor structure comprises a large number of narrow and parallel air channels processed to a composite material that is highly effective in attracting and retaining water vapour 28 6 Dehumidifier design 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters The rotor is exposed in sectors to different airflows The airflow that is to be dehumidified is called process air 1 and passes through the largest sector of the rotor The moisture in the process air is deposited into the rotor structure and the process air will then leave the rotor as dry air 2 While the rotor rotates slowly the incoming process air always meets a dry rotor structure thus creating a continuous dehumidification process The airflow t
9. considerable heat can develop in the reactivation heater causing its high temperature protector to trip Components close to the heat could be damaged CAUTION The dehumidifier has been designed to operate at specific process airflows corresponding to the fan sizes installed and must not be directly connected to air conditioning systems 2 3 Moving the equipment The dehumidifier is delivered on a pallet and must be handled carefully All panel doors on the unit must be closed during transport Provided that the dehumidifier is still secured to its delivery pallet it can be moved using a fork lift truck Weight of the dehumidifier can be found in section 6 5 Dimensions and service Space requirements 190TEN 1041revC 2 Installation 9 Gei Munters Dehumidifier ML17E MLT3OE 2 4 Packaging and Delivery Inspection 1 Check the delivety against the packing list consignment note or other delivery documents and check that everything is included and nothing 15 damaged 2 Contact Munters immediately if the delivery is not complete in order to avoid installation delays 3 If the unit is to be put into storage prior to installation see section 2 5 Storing the Equipment 4 Remove all packing materials from the unit and check carefully to make sure that no damage has occurred during transport 5 Any visible damage must be reported in writing to Munters prior to the start of installation 2 5 Storing the Equipment T
10. in which the transmitter operates Clean the filter using a fine brush If this does not clean it sufficiently the filter must be replaced To do this unscrew the filter from the transmitter 8 5 Dimensions 190TEN 1041revC 8 HS21 Humidity transmitter 45 This page left intentionally blank AUSTRALIA Munters Pty NORTH ALBURY Tel 61 0 260 256 422 Fax 61 0 260 258 266 AUSTRIA Munters Luftentfeuchtung WIEN Tel 43 1 616 42 98 Fax 43 1 616 42 98 98 info munters co at BELGIUM Munters N V AARTSELAAR Tel 32 3 458 24 34 Fax 32 3 458 24 33 sales info muntersnv be BRAZIL Munters Brasil Sao Paulo Tel 55 0 11 505 40 150 Fax 55 0 11 505 40 883 CANADA Munters Inc MISSISSAUGA Tel 1 905 858 5851 Fax 1 905 858 9130 CHINA Munters Beijing Ltd BEIJING Tel 86 0 10 80 481 121 Fax 86 0 10 80 483 493 DENMARK Munters A S FARUM Tel 45 44 95 33 55 Fax 45 44 95 39 55 info munters dk DUBAI Munters Middle East DUBAI Tel 971 488 130 26 Fax 971 488 131 06 FINLAND Munters OY HELSINKI Tel 358 9 8386 030 Fax 358 9 8386 0336 info munters fi FRANCE Munters France SAS ARGENTEUIL Tel 33 1 34 11 57 57 Fax 33 1 34 11 57 58 dh munters fr Munters GERMANY Munters GmbH HAMBURG Tel 49 40 734 16 01 Fax 49 40 734 11 11 mgd munters mail de ITALY Munters S R L ASSAGO MI Tel 39 02 488 6781 Fax
11. regular service and maintenance is required to keep the dehumidifier in optimal condition so that it works most efficiently Service and maintenance interval lengths are primarily determinded by operating conditions and the environment in which the unit is installed For example if the process air contains a lot of dust preventative maintenance should be carried out at shorter intervals The same also applies if the dehumidifier works intensively Below is an example of an ordinary service and maintenance program see section 4 4 Service and Maintenance Schedule Besides commissioning the unit four different service programs A D should be implemented at different time intervals Alternatively the Service Department at Munters can propose a service program adapted to suit local conditions depending on how the unit is working and on the type of environment The ML dehumidifier has a service reminder indicator in the control system see below When installing and commissioning an estimate should be made of the number of operating hours to the next service This agreed value is programmed in by Munters personnel 4 3 Service indicator lamp 4 3 1 Filter change needed 4 3 2 Service requirements The yellow service lamp indicates that a filter change or a general service is needed When the yellow lamp lights follow these steps Choose window 6 in the control system to find out why the service lamp is lit If Service 0001 is
12. to reset the alarm once the fault has been corrected H the fault re occurs contact Munters Product Service Check that the drive belt has not snapped Reset QM21 Contact Munters Product Service Reset QM23 Contact Munters Product Service Leave the motor to cool down and rectify the cause Reset QM12 16 Check the frequency converter manual for type of error and remedy Contact Munters Product Service Replace filter Replace filter Check the function of the reactivation heat er Check and adjust the reactivation and pro cess see section 2 12 Airflow Check and Adjust ment Check the function of the humidistat and that it is connected in accordance with the manufacturer s recommendations see section 8 HS21 Humidity transmitter 190TEN 1041revC 5 Fault Finding 27 Gi Munters Dehumidifier ML17E MLT30E 6 Dehumidifier design 6 1 Product Description 6 2 IP version The ML Series desiccant dehumidifiers are designed to efficiently dehumidify the air in low moisture applications They are equipped with an encapsulated rotor unit The rotor casing is constructed of durable thermoset plastic and contains isolated sections that provide a precise balance for the dehumidification reactivation and heat recovery airflows Its ruggedly formed metal frame and access panels are manufactured of stainless steel The electrical control system conforms to EN60204 IEC204 standards The electrical
13. 08 756 608 1 Space for service Table 6 1 Dimensions and service space requirements 30 6 Dehumidifier design 190TEN 1041revC Gei Munters Dehumidifier ML17E MLT30E 6 6 Capacity Diagrams Approximate capacity in kg hr Please contact your nearest Munters office ot refer to Munters DryCad program for more detailed information The below figures are based on a nominal 1 1 airflow NOTE kg h kg h LLLIIVVALLLLLLT T P O ASAN AN AK YI TT IN IV IN TTT TTT TT tet et AAA H HH IK WITT kg h 2 Process air relative humidity RH moisture removed in kg hour 1 Process air temperature 3 Dehumidification capacity kg h 60 RH 14 40 RH i BRE 10 e Ke l z ET SR ae SR EH Figure 6 4 Capacity Diagrams 31 6 Dehumidifier design 190TEN 1041revC Gi Munters 6 7 Technical specifications The following data is applicable to units fitted with electric reactivation heatets Process air Figures quoted are nominal based on fan inlet temperature of 20 and an air density of 1 2 kg m3 Rated airflow m3 s Rated airflow m3 h Minimum available static pressure Pa Fan motor power kW 0 472 1700 300 2 0 Reactivation air1 Rated A
14. 7 Window 4 Motor status The heater is running see section 7 4 8 Window 5 Reactivation power Reactivation temperature rises see section 7 4 6 Window 3 Reactivation temperature The set point for relative humidity gradually rises and check that the unit switches off when the set point corresponds with the actual relative humidity Then reduce the set value one percent at a time and make a note of the set value at which the unit restarts The difference between the real RH value and the current set value is the regulation accuracy hysteresis for which the humidity control is set This value can be changed on display 11 Move the operating switch on the control panel to the 0 position In order for the reactivation heater to cool down the reactivation air fan and the drive motor continue to operate after the unit has shut down until the temperature of the heater falls below 50 C Check that the reactivation air fan and the drive motor stop when the reactivation temperature drops below approx 50 Adjust the desired set value of RH 3 4 3 Inital start up Automatic mode AUTO external control When the unit is controlled via an external input signal 0 10 V the following measures should be taken before first start up 1 Operate the main power switch to the 1 position and check the indication for power supply connected The ACD display should be illuminated Set the external input signal t
15. 90TEN 1041revC a163 Table of Contents Gei Munters 7 5 4 Window 13 Reactivation 8 2 Installation and operation 44 temperature sees 41 8 2 4 General recommendations 44 7 5 5 Window 14 Control accuracy 42 8 3 Connecting the humidity transmitter 44 7 5 6 Window 15 P gain 42 8 4 45 7 5 7 Window 16 Integral time 8 5 DIMENSIONS esses 45 CONSTANT esa acies 43 8 HS21 Humidity transmitter 44 8 1 ET E 44 iv Table of Contents 190TEN 1041revC Gei Munters Important user information Intended use of the equipment Munters dehumidifiers are intended to be used for the dehumidification of air All other uses of the equipment use which is contrary to the instructions given in this manual can cause personal injury and or machine damage Warranty and obligations The warranty period is 24 months 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 w
16. Fault indications The dehumidifier is controlled and monitored using the control panel located on the front of the unit see section 3 5 Control Panel The red lamp on the control panel lights to indicate the occurrence of a fault Window 6 of the control system see section 7 4 9 Window 6 Alarm shows which function caused the fault indication 1 Introduction 190TEN 1041revC Dehumidifier ML17E MLT3OE Gei Munters 2 Installation 2 1 General 2 2 Safety p P gt E The ML Dehumidifier is intended for indoor installation The unit is inspected and checked prior to leaving the factory to guarantee consistent quality and maximum reliability If the unit is to be put into storage prior to installation see section 2 5 Storing the Equipment WARNING Ensure that the mains power is disconnected from the dehumidifier prior to changing the orientation of the process and dry air connections WARNING Low voltage is permanently connected to the inlet main power switch of the unit In the event of adjustment maintenance or repair the unit front covers may only be removed by qualified personnel CAUTION The wet air ducting must always be insulated if there is a risk of freezing The wet air leaving the dehumidifier will due to high moisture content condense on the inside duct walls CAUTION The main power switch must only be used in an emergency to stop the unit Since the reactivation fan will also stop
17. T30E Munters HUMIDITY actual Relative Humidity in RH SET V 1 Set value Relative Humidity in RH 7 4 2 Window 1B External set point Window 1B is automatically displayed when the dehumidifier is regulated to a set point set outside of the unit via an external signal This window is solely for information No settings can be made in this window 1B HUMIDITY HUMIDITY 048 RH EXT SETV 050 96 RH Figure 7 4 window 1B HUMIDITY Actual Relative Humidity in RH EXT SET V External Set Value Relative Humidity in RH 7 4 3 Window 1C External control Window 1C is displayed if the dehumidifier s reactivation heater is controlled directly via an external input signal 0 10 V Input signal size 1s displayed in 0 1 V i e 3 3 V is displayed as 33 In practice 3 3 V means that 33 of the reactivation heater power is connected 1C CONTROL HUMIDITY 048 RH EXTERN CONTROL Signal 0 1V 033 Figure 7 5 window 1C HUMIDITY Actual relative humidity in RH EXTERNAL Voltage of input signal in units of 0 1 V CONTROL 7 4 4 Window 1D Extra set point If at certain times a higher relative humidity can be accepted an alternative set point can be programmed for such The set point is set in this window Press V or A to change the set value The unitis then controlled by the input signal from the humidity transmitter against the alternative set value which is called Set Value 2 here Window 1D is
18. User s Manual ML MLT 17E 30E Desiccant dehumidifiers ML17E MLT30E with electric heater for reactivation Applies to all units manufactured from week 37 2005 9 Munters 190TEN 1041revC Munters Europe AB 2005 Gei Munters Table of Contents Important user information 5 1 Introduction 7 1 4 General sese 7 1 2 About this manual 7 1 3 Safety and caution measures 7 L Marklngs siiui 7 1 5 Supervision of operation 8 1 6 Fault indications 8 2 nstallation ores 9 21 General 1 esee 9 2 2 lege te en 9 2 3 Moving the equipment 9 2 4 Packaging and Delivery Inspection 10 2 5 Storing the Equipment 10 2 6 Location requirements 10 2 4 ID ctlng e ERR 11 2 7 1 General recommendations 11 2 7 2 Ductwork for Outdoor Air Inlet 12 2 7 3 Ductwork for Wet Air Outlet 12 2 8 Precautionary measures for units using LI desiccant 14 2 9 Electrical Connections 14 2 9 1 Mains 14 2 10 External humidity transmitter
19. Window 13 Reactivation temperature A maximum value for reactivation temperature can be programmed in this window beween 100 C 140 C Press V or A to change the set value 13 SETUP SET VALUE R TEMP 120C 100 140 Figure 7 14 window 13 190TEN 1041revC 7 Control system ACD 41 Gi Munters Dehumidifier ML17E MLT30E 7 5 5 Window 14 Control accuracy 7 5 6 Window 15 P gain Control accuracy i e the difference hysteresis between activation and deactivation in automatic operating mode is set here Press V or A to change the set value A hysteresis value of 2 means that the unit will start when the sensor value is 2 percent above the set value and stop when the sensor value is 2 below the set value Example With a set value of 30 and hysteresis 2 the dehumidifier will start at 32 and stop when the Relative Humidity RH of the air has dropped to 28 The value can be set between 1 and 10 9 14 SETUP HYSTERESIS 4004906 1 10 Figure 7 15 window 14 A value between 0 and 9 for the proportaional band is set in this window 15 SETUP REGULATOR P GAIN 200 10021 Figure 7 16 window 15 Example to set the value 4 press V or A to change the value in the window to 400 400 4 gt E gt gt SET POINT H E 1 E 1 i i PROPORTIONAL BAND 1 u 1 1 1 A TOOBIG i B TOO SMALL C CORRECT DECREASED DEMAND
20. afety ecc 5 3 Fault Finding Dehumidifier design 6 1 Product Description 6 2 version 6 3 Principle of operation 6 4 Operating principles IP version 6 5 Dimensions and service space requirements 6 6 Capacity 6 7 Technical specifications 6 8 Unit s main components 6 9 Noise data teste eet Control system 7 4 General 2 eese 1 2 OWUCUICN cradle ZER Ae 7 3 Working with the AOD 7 4 Operating windows 1 6 7 4 1 Window 1 Internal set point 7 4 2 Window 1B External set point 7 4 8 Window 1C External control 7 4 4 Window 1D Extra set point 7 4 5 Window 2 Runtime 7 4 6 Window 3 Reactivation temperature 7 4 7 Window 4 Motor status 7 4 8 Window 5 Reactivation power 7 4 9 Window 6 Alarm 7 5 Basic settings Windows 10 16 7 5 1 Window 10 Information 7 5 2 Wlndow 11 Continual operation of process air fan 7 5 3 Window 12 Humidity control alternatives sss 1
21. arranty 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 Note The contents of this document 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 ot be transmitted in any form or in any matter without Munters written consent Please send any comments regarding the contents of this publication to Munters Europe AB Dehumidification Division Technical Publications Box 434 191 24 Sollentuna Sweden Tel 46 0 8 626 63 00 Fax 46 0 8 626 86 18 Munters Europe AB 2005 Safety In this publication hazardous activities are indicated and preceded by the common hazard symbol WARNING AN is used in this publication to indicate a possible danger that could lead to personal injury An instruction is normally given followed by a short explanation plus the possible effects if the instruction is not followed CAUTION N is used in this publication to indicate a possible danger that could lead to damage to the machine or other equipment and or cause environmental damage An instruction is normally given followed by a short explanation plus the possible environmental effect if the instruc
22. ately to serve their purpose Figures and tables are numbered in accordance with the actual chapter e g figure 1 3 is picture number 3 and is found in chapter 1 1 3 Safety and caution measures 1 4 Markings The contents of this manual include suggested best working practices and procedures These are provided for guidance only They are not intended to replace personal responsibility and or local safety regulations The dehumidifiers in the ML range are designed to meet the safety requirements directives and standards listed in the EC Declaration of Conformity We recommend that the user informs him herself about the use of safety symbols in this manual by reading the section Important User Information on the previous page Safety information in this manual is contained at the beginning of each of its chapters Figure 1 1 Location of the unit identification plate 190TEN 1041revC 1 Introduction 7 Gi Munters Dehumidifier ML17E MLT30E Gi Munters Type ML17E Fabr No 0537 190XXX XXXXX 3 400V 50Hz 31kw 18 21 5 kW IP54 C Munters Europe AB Figure 1 2 Main identification label example Explanation of Fabr no on the identification plate 05 year of manufacture 37 week of manufacture 190 XXXXX article number 1 5 Supervision of operation 1 6
23. cation The process fan can be set to operate continuously see section 7 5 2 WIndow 11 Continual operation of process air fan 2 11 3 Humidity control alternatives There are three different ways of controlling the dehumidifier when in the automatic operational mode see section 7 5 3 Window 12 Humidity control alternatives 1 The dehumidifier runs to an internally adjustable set point which is programmed via control system window 1A 2 The dehumidifier is regulated to an externally adjustable set point See display 1B The external set point comprises an analogue signal 0 10 V between terminal blocks 304 and 306 3 0 volts for example is set point 30 RH 3 The dehumidifier s heater is controlled from an external input signal 0 10 V see display 1C The external input signal at input 18 terminal block 306 controls the heater power regardless of the actual humidity load 3 0 volt for example means that the unit is being run at approximately 30 heating capacity If you can accept a different relative humidity level during certain times then it is possible regardless of which of these three control alternatives is selected to control the dehumidifier against an additional temporary internally adjustable set value designated set value 2 see section 7 4 4 Window 1D Extra set point Set value 2 is activated using a closing contact 190TEN 1041revC 2 Installation 15 M Munters Dehumidifier ML17E MLT30E which mi
24. ctivation air impeller Process air filter Reactivation air filter Rotor Upper rotor cover Lower rotor cover Rotor sealing ring Roller belt guide Drive belt Reactivation heater Drive motor Pulley belt drive Electrical control panel Figure 6 5 ML17 MLT30 Layout drawing version with electric reactivation heater 190TEN 1041revC 6 Dehumidifier design 33 M Munters Dehumidifier ML17E MLT30E 6 9 Noise data The following sound data refers to MLT30 Other sizes do not exceed these values Noise for Correction K dB at ISO band centre frequency Hz 63 125 500 1000 2000 10 13 20 22 Duct 1 1 Duct 2 3 20 20 19 Duct 3 5 17 20 21 2 1 Duct 4 25 31 31 Room 16 20 23 NOISE PATHS TO SURROUNDINGS 1 Ductwork for dry air 2 Ductwork for process air 3 Ductwork for reactivation air 4 Ductwork for wet air NOISE PATHS TO EQUIPMENT ROOM 75qB SYMBOLS L Total noise level dB rel 10 12 W L Noise powet level in octave band dB rel 10 12 W Kor Correction for calculating Ly Ly Ly Kop dB A Rated noise level at 100m room absorption 34 6 Dehumidifier design 190TEN 1041revC Dehumidifier ML17E MLT30E Munters 7 Control system ACD 7 1 General The dehumidifier is equipped with a programmable control system ACD There is a limited ability to adapt the system to meet special application needs
25. d A alarm no 1 is shown on display 6 The red lamp is on and display 6 is show ing A alarm no 2 A alarm no 3 A alarm no 4 A alarm no 5 A alarm no 6 A alarm no 8 A alarm no 9 11 The yellow lamp lights and display 6 shows Service no 1 Service no 2 Possible cause The high temperature cut out BT33 has tripped either due to an obstruction in the reactivation airflow or because the reactiva tion airflow has been set too low Rotor has stopped Reactivation fan is not working the circuit breaker has tripped some other cause Process air fan is not working the circuit breaker has tripped some other cause Over temperature in drive motor Reactivation heater is not working Frequency converter error IP version only Reactivation heater is faulty Reactivation filter clogged Process air filter clogged According to display no 3 the temperature rise across the reactivation unit is too low Reactivation and process airflows do not correspond to the rated airflows The humidistat is not working properly Table 5 1 Fault Finding Corrective Action Leave the unit to cool down Check that the air inlet outlet ducts and fil ters are free from obstructions and are not clogged with dirt Check and adjust the reactivation airflow see section 2 12 Airflow Check and Adjustment Investigate cause of alarm and rectify General Set the mode switch to 0
26. d reactivation air inlet ducts the process and reactivation airflows can be changed to the required setting 3 Start the dehumidifier for approximately eight minutes to allow the reactivation heater to reach its normal operating temperature See chapter chapter 3 Operation 4 Check that the temperature difference between the reactivation air display 3 and the input reactivation temperature is approximately 95 C tolerance 5 C If the temperature differential is outside the tolerance limit of 5 adjust the reactivation air damper in small steps allowing the temperature display to stabilize after each adjustment until the reactivation temperature reading is within the specified tolerances EXAMPLE Inlet air temperature 15 C Reactivation air temperature 110 C Temperature increase 95 C 190TEN 1041revC 2 Installation 17 Munters Dehumidifier ML17E MLT3OE 2 13 2 Process fan speed control IP version only The process air fan 1s controlled via a frequency converter that makes it possible to adjust air pressure and flow This 1s located behind the lower front panel For information on use and setting see the separate frequency converter manual 18 2 Installation 190TEN 1041revC Dehumidifier ML17E MLT3OE Munters 3 Operation 3 1 General Dehumidifiers ML17 MLT30 are equipped with a control panel containing main power switch mode switch display and indicator lamps The operating switch
27. displayed the reactivation filter must be changed If Service 0002 is displayed the process air filter must be changed Open the filter cover and change the filter If neither of the indicators mentioned above are shown in window 6 go to window 2 If window 2 shows Service 0000 or a negative value the dehumidifier has reached the number of operating hours where a general service is recommended Contact Munters service department 24 4 Service and Maintenance 190TEN 1041revC Dehumidifier ML17E MLT3OE Gei Munters Window 2 shows the number of operating hours until the next service is needed A minus sign before the number of hours indicates that the service should already have been carried out Below is an example of an ordinary service and maintenance program 4 4 Service and Maintenance Schedule Service Service level work operating time in hours Calendar time in months Inspection replace filter if necessary function controls Preventive inspection incl safety check Measuring capacity rotor inspection Replacing over temperature protection Inspect drive belt and backing rollers and replace if necessary Drive motor replacement Examining fans impellers motor bearings Examining electrical and control sys tems function check Calibrating the humidity control equip ment and the sensors Calibrating the temperature control equipment and the sensors
28. e In this position the unit will operate continuously full capa city There may be a brief delay before the unit starts When the mode switch is in the AUTO position the dehumidifier runs auto matically and is controlled towards an internally adjustable relative humidity set value or via an external input signal When the mode switch is in the 0 position the dehumidifier is switched off but may continue to run until it has cooled down White lamp RUN Illuminates when the unit dehumidifies Red lamp ALARM with a steady glow when an alarm has triggered Check window no 6 to see which alarm has triggered 22 3 Operation 190TEN 1041revC Dehumidifier ML17E MLT30E Munters Item Switch Indicator Function Yellow lamp SERVICE Illuminates when a filter change is required see section 7 4 9 Window 6 Alarm or when the dehumidifier has reached the number of operating hours at which maintenance should be carried out see section 7 4 5 Window 2 Runtime Table 3 1 Function of the Control Panel 190TEN 1041revC 3 Operation 23 Gei Munters Dehumidifier ML17E MLT3OE 4 Service and Maintenance 4 1 Safety N WARNING Adjustments maintenance and repair work may only be carried out by qualified personnel 4 2 Regular service and maintenance Munters dehumidifiers are designed for long term continual usage with a high degree of reliabilty As with all machinery
29. e Action Check power supply to the unit Operate the main power switch to the 1 position and check that the display is active and indicates the latest settings and that the three lamps are flashing as they do during lamp test Investigate the cause of the fault and rectify Reset fuses Investigate the cause of the fault and rectify Reset QM25 If the fault re occurs contact Munters Product Service The unitis The display There is no need for dehumidification AUTOmode is active If remote start is selected it has been Switch on the remote start switch and has switched off stopped The mode selector has been set to the Set the mode selector switch to the 100 AUTOautomatic position by mistake al position and check that the unit starts though no humidistat has been connected Humidistat fault AUTOmatic mode Set the mode switch to AUTOmatic mode and check the humidistat by seeing whether the dehumidifier starts when the humidistat set value is reduced to less than the value for the actual relative humidity RH Reset the humidistat set value after the check If necessary replace the humidistat 26 5 Fault Finding 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters Fault Symp tom Unit has stopped Unit has stopped Unit in opera tion Loss of per formance The dehu midifier is in operation but is not controlling the humidity Indicators The red lamp is on an
30. e humidity transmitter should be connected using the cable supplied If a longer cable is required use of the same cable type is recommended If the transmitter cable is longer than approx 100 metres there may be voltage drops that could affect the function of the humidity transmitter 14 2 Installation 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters 2 10 1 Location requirements 2 11 Pre start settings 2 11 1 Remote start The humidity transmitter should 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 must not be placed close to a heat source or so that is it is exposed to direct sunlight Before starting the dehumidifier for the first time a number of operating parameters must be set via the ACD control system see section 7 5 Basic settings Windows 10 16 Some features require connection to external equipment For wiring details refer to the wiring diagrams supplied with this unit The unit can be started and stopped externally with a switch connected between terminal blocks 307 and 308 To do so the link that is mounted as standard must be removed 2 11 2 Continuous process air fan operation The default setting is that the process fan starts automatically only when dehumidification is needed However continuous process airflow may be desirable even when there is no demand for dehumidifi
31. er is in position 0 i e there is no power supplied the window is dark No settings can be made during this time When the dehumidifier has mains power i e the main power switch is in position 1 the window is illuminated and the most recently used operating window 1 6 is displayed A small green lamp on the right hand side of the window flashes to confirm communication with the control system Illumination of the red lamp indicates a fault in the internal control network 7 4 Operating windows 1 6 Window for monitoring Some settings can be made here Window 1 which is the base window has three variants 1A 1B and 1C depending on which humidity regulation principle is selected for the dehumidifier The system automatically displays the window relevant to the selected type of humidity regulation Selection of humidity regulation principle is made in window 12 see section 7 5 3 Window 12 Humidity control alternatives 7 4 1 Window 1A Internal set point In most cases this is the starting window displayed when humidity transmitter HS21 is connected see chapter 8 This window shows current relative humidity and the set point the dehumidifier is set to work toward SETV 1 The set point is set in this window Press V or A to change the set value HUMIDITY HUMIDITY 048 RH SETV I 050 RH Figure 7 3 window 1A 36 7 Control system ACD 190TEN 1041revC Dehumidifier ML17E ML
32. ggered see section 3 5 Control Panel The alarm indicator goes out automatically when the cause has been rectified When an A alarm is triggered the dehumidifier stops If a filter alarm is triggered the dehumidifier continues working The dehumidifier is equipped with the following alarms 190TEN 1041revC 7 Control system ACD 39 Gi Munters Dehumidifier ML17E MLT30E A alarm Service A 00 A A Q N Excess temperature reactivation heater Rotor stop Reactivation fan Process air fan Drive motor Reactivation heater For gas heater only Frequency converter error IP version only 11 Contact Munters Dirty reactivation filter Dirty process air filter Maintenance required 7 5 Basic settings Windows 10 16 Note that all settings in windows 10 16 can only be made with the mode 7 5 1 Window 10 Information switch in position 0 Press gt lt to page forward or back between the different operating windows Page between different windows as described in section 7 3 Working with the ACD i e with buttons gt or lt To access the operating windows hold button lt depressed at least 3 seconds If you switch to operating windows 1 6 the most recently active window is displayed If a window is inactive for approx 30 seconds the programme returns to the most recently activated operating window The program version of the ACD Program is shown here This version
33. ght be a timer for example between terminal blocks 309 and 310 2 11 4 Reactivation temperature It is possible to set a maximum reactivation temperature It is pre set to 130 C see section 7 5 4 Window 13 Reactivation temperature 2 11 5 Control accuracy It is also possible to set the maximum difference between switching on and off so called hysteresis in display 14 The pre set value is 3 For more information see section 7 5 5 Window 14 Control accuracy 2 12 Pre start checks WARNING A The mains power supply is permanently connected to the main power switch in the unir Adjustments maintenance and repair work may only be carried out by qualified personnel 2 12 1 Pre Start Checklist The following checks are to be carried out before the dehumidifier is started for the first time 1 Ensure that the main power switch on the control panel is in the position 0 2 Check the air intake filters for damage and proper fixation and also check that all areas inside the unit are clean 3 Visually inspect all ducting and duct connections to make sure that all connections have been correctly installed and that there are no signs of damage to the system Also check that all ducts are free from obstacles blocking the air passage 4 Remove the lower front panel and check that none of the circuit breakers on the control panel has tripped For further details refer to the wiring diagrams provided with the unit 5 Check tha
34. hat is used to reactivate dry the rotor structure is called reactivation air 3 and is first heated Passing through the smallest sector of the rotor in the opposite direction to the process airflow the reactivation air removes the deposited moisture and leaves the rotor as wet air 4 watm moist ait 6 4 Operating principles IP version 1 Process air 2 Dry air 3 Reactivation air 4 Wet air Figure 6 2 Operating principles for IP version The operating principles are the same in the IP version but the process air inlet is designed to receive cold wet air 190TEN 1041revC 6 Dehumidifier design 29 M Munters Dehumidifier ML17E MLT30E 6 5 Dimensions and service space requirements Scaled and dimensioned AutoCAD drawings are available in Munters DryCAD program can be ordered from the nearest Munters office o agog _ 1 Process air inlet 2 Dry air outlet 107 3 Reactivation air inlet 4 Wet air outlet 0315 1 60 400 e E 62 Le 125 125 62 435 Dimensions in mm H J 956 608 956 6
35. he following is important if the dehumidifier is to be stored prior to installation Place the dehumidifier on a horizontal surface Do not remove the dehumidifier s packaging Protect the dehumidifier from physical damage Store the dehumidifier under cover and protect from dust frost rain and aggressive contaminants 2 6 Location requirements NOTE The dehumidifier 1s only intended for indoor installation Avoid installing the dehumidifier in a damp environment where there is a risk of water entering the unit or in a very dusty environment If in doubt seek advice from Munters Itis important that the intended installation site meets the location and space requirements for the equipment in order to achieve the best possible performance and trouble free operation For the unit and service dimensions see section 6 5 Dimensions and service Space requirements It is important both for maintenance and for service that the minimum dimensions for service access are complied with 10 2 Installation 190TEN 1041revC Dehumidifier ML17E MLT30E Munters 2 7 Ducting 2 7 1 General recommendations The connections for process and reactivation air are designed in accordance with the recommendations in ISO 7807 The rectangular duct connections contain tapped inserts for M8 screws NOTE The dehumidifier has been designed to operate at specific process airflows corresponding to the fan sizes installed and m
36. idity of the air RH is affected by the temperature In order to measure the air s relative humidity accurately the transmitter s bulb must therefore be located where the temperature is representative of the air that is to be measured This is why the location of the transmitter can be of crucial importance to the accuracy of the result of the measurement good result can be guaranteed by following the guidelines given below 1 Install the bulb where the humidity temperature and air pressure are all representative of the environment that is to be measured 2 Where a transmitter is mounted on a duct ensure that the airflow is at least 1 m s so that variations in the temperature detected quickly 3 Avoid placing the transmitter in the direct vicinity of heat sources cooling batteries warm or cold walls in direct sunlight or anywhere else where the temperature is not representative 4 The transmitter must be fitted with the bulb pointing downwards to prevent condensed water running into the transmitter If this is not possible it should be mounted horizontally 8 3 Connecting the humidity transmitter The humidity transmitter 15 connected to terminal blocks 301 302 and 303 see also the accompanying electrical circuit diagram 44 8 HS21 Humidity transmitter 190TEN 1041revC Dehumidifier ML17E MLT30E Munters 8 4 Maintenance The dust filter should be cleaned at regular intervals determined by the environment
37. in and snow from being drawn into the dehumidifier The air inlet must be located away from possible contaminant such as engine exhaust gases steam and harmful vapours To prevent the wet outlet air humidifying the reactivation inlet air the air inlet for reactivation must be located at least 2 m from the air outlet for wet ait See figure 2 7 Outdoor air inlet design Rectangular duct Round duct lt Wire netting mesh width Wire netting mesh width approx 10 mm approx 10 mm Figure 2 1 Outdoor air inlet design 2 7 3 Ductwork for Wet Air Outlet NOTE Wet air ducting should be manufactured in corrosion resistant material e g stainless steel aluminium or plastic and should be capable of withstanding temperatures of up to 100 C The wet air ducting must alvays be insulated if there is a risk of freezing The wet air leaving the dehumidifier will easily cause condensation on the inside of the duct walls due to the high moisture content Horizontal duct runs must therefore be installed sloping downwards away from the dehumidifier to allow for condensate drainage The slope should be a minimum of 2 cm per meter of duct In addition 5 mm drain holes 12 2 Installation 190TEN 1041revC Dehumidifier ML17E MLT30E Munters should be drilled at the lowest points in the ducting to prevent water accumulating in the duct see figure 2 2 Wet air outlet design Horizontal Vertical wet air
38. ing For more information refer to section 6 5 Dimensions and service space requirements To reduce noise and or vibration being transmitted along rigid ductwork good quality airtight flexible connections should be fitted e Ducts mounted directly onto the dehumidifier should be adequately supported to minimise the load and stress due to the weight and movement of the ducting e Dampers for balancing the airflows must be installed in the dry air outlet and reactivation air inlet ducts The correct airflows essential for 190TEN 1041revC 2 Installation 11 Gei Munters Dehumidifier ML17E MLT30E maintaining the operating efficiency of the unit To correct the airflow see section 2 73 Airflow Check and Adjustment For the IP version see section 6 2 IP version process ait pressure and flow are adjusted using the frequency converter of the process air fan In this case there is no need for a damper in the dry air duct The total resistance in the process and reactivation ductwork must not exceed the performance rating of the fans fitted in the dehumidifier For details of minimum available static pressure see section 6 7 Technical Specifications 2 7 2 Ductwork for Outdoor Air Inlet When bringing outside ambient air into the dehumidifier the opening to the inlet duct should be located sufficiently high above ground level to prevent the pick up of dust and debris The ducting should be designed to prevent ra
39. ir with very high relative humidity from inadvertently being drawn through the rotor and into the room This is particularly important when the process air is drawn from outdoors or the system has been fitted with a pre cooler 2 9 Electrical Connections 2 9 1 Mains Supply The unit is designed for 3 phase AC operation Each unit is supplied complete with all the internal wiring installed and configured in accordance with the specified voltage and frequency on the identification plate NOTE The supply voltage must not differ by more than 10 from the specified operating voltage The unit must be correctly earthed The mains power supply is connected directly to the main power switch in the unit The supply cable and main fuses must be dimensioned to suit the unit being installed For connection details refer to the zdentification plate and Electrical Circuit Diagram or refer to section 6 7 Technical specifications 2 10 External humidity transmitter The dehumidifier is supplied as standard with a humidity transmitter of type HS21 suitable for wall of duct mounting This is mounted externally and connected to a terminal block see the electrical circuit diagram supplied with the unit The humidity transmitter controls the dehumidifier when the operational mode switch is in the AUTO position i e automatic operation and also indicates the current Relative Humidity see section 2 77 Pre start settings To ensure functionality th
40. irflow m3 s Rated Airflow m3 s Minimum Available Static Pressure Pa Fan motor power kW 0 175 630 300 1 1 Rated Current Current Amps Phase 3 50 Hz 230V Current Amps Phase 3 60 Hz 230 V Current Amps Phase 3 50 Hz 380 V Current Amps Phase 3 60 Hz 380 V Current Amps Phase 3 50 Hz 400 V Current Amps Phase 3 50 Hz 415 V Current Amps Phase 3 60 Hz 440 V Current Amps Phase 3 60 Hz 460 V Current Amps Phase 3 60 Hz 480 V Current Amps Phase 3 50 Hz 500 V Reactivation Heater Temperature rise across heater Reactivation Heater Power KW 95 18 0 95 24 6 Other Technical Data Drive Motor Power W Air Filtration Standard Electrical protection standard dust and water resistant main casing Fan Motor Winding Insulation Class Drive Motor Winding Insulation Class High Temperature Cut Out C 10 G3 EU3 IP54 Class F Class F 160 5 10 G3 EU3 IP54 Class F Class F 160 5 Contactor Coil Voltage External potential free output contacts 230 V AC 2 A 50 V AC max Table 6 2 Technical specifications 32 6 Dehumidifier design Dehumidifier ML17E MLT30E 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters 6 8 Unit s main components o o Om KRW LES x A Process fan motor Process air impeller Reactivation fan motor Rea
41. o approx 10 V Operate the Mode switch on the control panel to the AUTO position Check that The white lamp illuminates to indicate that the unit is dehumidifying e The fans and drive motor have started see section 7 4 7 Window 4 Motor status Heater output is connected see section 7 4 8 Window 5 Reactivation power Reactivation temperature rises see section 7 4 6 Window 3 Reactivation temperature 190TEN 1041revC 3 Operation 21 M Munters Dehumidifier ML17E MLT30E 4 Reduce input signal voltage to approx 6 V Check that heater output is approx 65 5 Reduce input signal voltage to approx 3 V Check that heater output is approx 35 6 Reduce the voltage to 0 V and check that the heater power is completely switched off 7 Move the mode switch on the control panel to position 0 Check that the dehumidifier shuts down once reactivation temperature has dropped below 50 C Swich off remote start if it is engaged 3 5 Control Panel 5 Figure 3 1 Control Panel Switch Indicator Function 1 Main Power Switch When the main power switch is in the 0 position the unit is not powered beyond the switch When the main power switch is in the 1 position the dehu midifier can be started Control system ACD See chapter 7 for information about the functions of the control system Mode switch With the mode switch in the 100 position the dehumidifier will operate in manual mod
42. on the control panel has two operating positions 100 Full power position The dehumidifiers fans rotor and reactivation heater operate continuously at full capacity AUTO Automatic position The dehumidifier fans rotor and reactivation heater operate when the relative humidity exceeds the desired value the set point If remote start is connected the switch must be set to on see section 2 77 7 Remote start If continual process air operation is selected in the control system see section 7 5 2 W Indow 11 Continual operation of process air fan the process ait fan continues to tun even after the unit has stopped dehumidifying If the dehumidifier is regulated via an external input signal see section 7 4 3 Window 1 C External control the fans and drive motor start when the remote start switch is closed regardless of the existing relative humidity The reactivation heater is regulated via the input signal In the case of a power cut the dehumidifier will restart automatically when the power supply is restored 3 2 Safety CAUTION A To prevent damage to the fans the unit must not be run for longer than a few minutes prior to setting up the process and reactivation airflows For more information see section 2 13 Airflow Check and Adjustment CAUTION Failure to correctly adjust the process and reactivation airflows could cause the unit to malfunction 3 3 Quick stop The mode switch is used to start and stop the
43. outlet wet air outlet Downward slope away from dehumidifier Wet air Wire netting mesh widtl approx 10 mm Wet air PP Wire netting mesh width approx 10 mm 4 To condensate drain Figure 2 2 Wet air outlet design OS OS ON gt Ka i a Geck Omp LO M 3 Process air inlet Dry air damper Dry air outlet External filter box optional Reactivation air inlet Duct transition gt Wet air outlet Reactivation air damper A o Outlet duct wire netting Figure 2 3 Ducts required for installation The illustration on tbe left depicts the IP version with pre cooling 190TEN 1041revC 2 Installation 13 M Munters Dehumidifier ML17E MLT30E 2 8 Precautionary measures for units using LI desiccant rotor The dehumidifier comes standard with Munters high performance rotor HPS High Performance Silicia gel If the dehumidifier is delivered with LI rotor lithium chloride it is vital to prevent the desiccant rotor from becoming to greatly loaded with moisture when the dehumidifier is switched off Make sure that no air passing through the rotor has a relative humidity greater than 80 We recommend installation of an adjustment damper in the dehumidifier s process and reactivation air inlet This prevents a
44. t the incoming power supply voltage is correct and that the cables are correctly connected 6 Check that the humidity transmitter sensor have been correctly positioned in the room and have been properly connected to the unit see section 2 10 External humidity transmitter 7 Set the process and reactivation airflow dampers to the fully open position For the IP version the process air fan is run at high speed with the help of the frequency converter see section 2 13 2 Process fan speed control IP version only 16 2 Installation 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters 2 13 Airflow Check and Adjustment 2 13 1 General To obtain the design performance the dry air and reactivation airflow dampers must be correctly adjusted in accordance with the rated airflow see section 6 7 Technical specifications If necessary please contact Munters to obtain help to order the installation and adjustment of the dehumidifier The addresses and telephone numbers to Munters can be found on the back of this manual CAUTION Failure to correctly adjust the process and reactivation airflows could cause the unit to malfunction 1 The direction of rotation of the rotor must be checked after connection to the power supply Open the middle front panel Start the dehumidifier and check that the rotor is rotating clockwise i e in the same direction as the arrow 2 By adjusting the dampers installed in the dry air outlet an
45. that may arise The dehumidifier is delivered with the ACD system set to standard values These can normally be adjusted on site as part of the installation and start up process Munters ACD Figure 7 1 ACD unit 7 2 Structure ACD is made up a number of windows for operating no 1 6 and basic settings no 10 16 Normally the basic setting component is only used to set basic values in conjunction with the initial start up 7 3 Working with the ACD Figure 7 2 Push button functions 190TEN 1041revC 7 Control system ACD 35 Gi Munters Dehumidifier ML17E MLT30E Press gt or lt to page forward or back between the different operating windows Hold lt depressed for three seconds to shift to the window for basic settings Then press gt or lt to page forward or back between the different operating windows Press V or A to change the set value If you cannot make your way back to the starting point the unit must be switched off with the mode switch Once the unit has shut down completely switch off the main power switch and turn it on again to reset the system The buttons DEL ALT ESC OK are only used for basic programming and configuration of the control system and are not to be used for normal operation If the OK button is accidentally pressed go back by pressing ESC If the button is accidentally pressed go back by pressing again If the main power switch of the dehumidifi
46. tion is not followed NOTE Used to accentuate supplementary information that is required for problem free use or optimal use of the unit Conformity with directives and standards Munters dehumidifiers are designed and manufactured by an EN ISO 9001 accredited development and manufacturing organization The unit conforms with the specifications in the Machinery Directive 98 37 EEC the Low Voltage Directive 73 23 EEC as amended by Directive 93 68 EEC and the EMC Directive 89 336 EEC as amended by Directives 92 31 EEC and 93 68 EEC The standards applied are listed in the EC Declaration of Conformity 190TEN 1041revC Important user information 5 This page left intentionally blank Dehumidifier ML17E MLT30E Gei Munters 1 Introduction 1 1 General 1 2 About this manual Munters dehumidifiers are designed to dehumidify air efficiently Munters manufactures a wide range of dehumidifiers that are designed for different uses and applications Please contact your nearest Munters office if you have any questions regarding the installation of your dehumidifier For product data see chapter 6 Dehumidifier design This manual is written for the user of the dehumidifier and describes the installation operation maintenance and basic fault finding The information structure of the manual is built on numbered chapters and sections Contents on page 3 gives a quick overview The different chapters can be used separ
47. ue to run after the unit has been switched off until the reactivation temperature has fallen below approx 50 C 7 Check that the reactivation air fan and the drive motor stop once the reactivation temperature has fallen below approx 50 C A few minutes delay is quite normal 3 4 2 Inital start up Automatic mode AUTO regulating to set point In order to operate the unit in automatic mode to a desired set point a humidity transmitter must be connected If the system is equipped with remote start this switch must be closed The following applies regardless of whether the unit is regulated by a set point set via the unit display see section 7 4 7 Window 1A Internal set point display 1A external see section 7 4 2 Window 1B External set point display 1B or via an extra set point nighttime reduction see section 7 4 4 Window 1D Extra set point display 1D 1 Move the main power switch to the 1 position and check that the power connection indicator is displayed This consists of the ACD display being switched on and the small green light on the display unit flashing 2 Adjust the set value for the minimum possible relative humidity 3 Move the operating switch to the AUTO position Check that e The white lamp illuminates to indicate that the unit is dehumidifying 20 3 Operation 190TEN 1041revC Dehumidifier ML17E MLT30E Gei Munters 9 The fans and drive motor have started see section 7 4
48. unit in normal operation In case of an emergency use the main power switch on the dehumidifier see figure 3 5 Control Panel A CAUTION The main power switch shouid only be used to stop the dehumidifier in an emergency Since the reactivation fan will also stop considerable heat can build up in the reactivation heater causing its high temperature protector to trip which can cause damage to components close to the heater 190TEN 1041revC 3 Operation 19 M Munters Dehumidifier ML17E MLT30E 3 4 Operating the unit 3 4 1 Initial start up Manual mode 100 1 Move the main power switch to the 1 position and check that the ACD display is switched on 2 The three lamps should flash twice as a check on the lamp function 3 Move the operating switch to the 100 position Check that e The white lamp illuminates to indicate that the unit is dehumidifying The process and reactivation air fans have started see section 7 4 7 Window 4 Motor status The drive motor is operating see section 7 4 7 Window 4 Motor status 4 Allow the unit to operate for approximately 8 minutes to ensure that the operating conditions have stabilised Check that the temperature of the reactivation heater is rising see section 7 5 4 Window 13 Reactivation temperature 5 Move the operating switch on the control panel to the 0 position 6 In order to dissipate any residual heat the reactivation air fan and the drive motor will contin
49. ust not be directly connected to air conditioning systems NOTE The IP version see section 6 2 IP version does not have a process air filter Process air must therefore be connected to cold pre cooled and filtered air via a duct When installing ductwork between the dehumidifier and the inlet and outlet connections the following recommendations should be observed The length of ductwork should be kept as short as possible to minimise static air pressure losses To maintain performance all rigid process or reactivation air ductwork joints must be air and vapour tight The process ait ductwork should be insulated to prevent condensation from developing on the outside of the duct whenever the temperature of the air within the duct falls below the dewpoint of the ambient air through which the ductwork is routed The ducting must always be insulated when there is a risk of freezing The wet air leaving the dehumidifier will easily cause condensation on the inside of the duct walls due to the high moisture content This must be avoided by insulating the ducts Horizontal duct runs should be installed sloping downwards away from the dehumidifier to allow for condensate drainage On the wet air outlet ducting suitable condensate drains should be installed at low points in the ductwork See figure 2 2 Wet air outlet design e Ensure that access for operation and servicing is not restricted when designing and installing duct
Download Pdf Manuals
Related Search