MR050B SERIES DEHYDRATOR USER MANUAL
Contents
1. Parts Replacement lle ss 3 7 Unit Shutdown and Removal 3 8 Service Restoration 00 NNNNNDADDDDD 0 Section 4 Troubleshooting ets Kae Se he Bee Sue de Lan wen DO Problem Condition kis a kd aid hi iba death dad gee ned doe ota 10 Figure 4 MRO50B 31015 Wiring Diagram m as a ll Le de dub Wowk Ge bye koli ee a ime 1 2 Figure 6 Pneumatic Diagram 13 Section 5 Replacement Parts ee Cie Desiccant Kit MROSOB KIT DSCNT LIKE EP Compressor Kit MRO5OB KIT CPRSR 14 Section 6 Customer Service dans sus ted xA SES d s due s sec 6 0 Joh ib 244 068 224 ATH ih AIR Phase poissi der aa 6 1 In Case of Trouble ooo 4 6 2 Initial Steps by CommScope 15 6 3 Repair Center Process 15 MRO50B SERIES DEHYDRATOR USER MANUAL Section 1 General Information 1 1 1 2 Introduction This manual contains the information you need 1 3 to install operate and maintain your MRO50B Series dehydrator Please take the time to read this manual before attempting to operate or service2. and packing materials to return your unit Otherwise we have factory packing materials available for a nominal fee Enclose a completed copy of this form inside the box and clearly mark your Company Name and RMA XXXXXXX on outside of the box Address the box to the following Ship To Address COMMSCOPE PRESSURIZATION SERVICE CENTER RMA 11312 S PIPELINE RD EULESS TX 76040 6629 Please note Units received with Biological animal contamination will be returned unrepaired or scraped after notification and you will be invoiced for inspection and freight CONTACT NUMBERS If you have any questions about the repair process or status of your unit please contact us directly through one of the following methods Telephone below TEL 817 864 4150 817 864 4155 FAX 817 864 4179 MRO50B SERIES DEHYDRATOR USER MANUAL 16
3. COMMSCOPE MRO50B SERIES DEHYDRATOR USER MANUAL Bulletin AE01B A0553 001 Rev M 2009 2012 CommScope Inc All rights reserved 04 12 MRO50B SERIES DEHYDRATOR USER MANUAL Table Contents Section 1 General Information aa das eds eus ace he tds ae ne da ache nu 1 1 Introduction i oue 44 244 Seu a oO Dae due AU Ur ie Gui ent Ree WT A 1 2 VDESEMPUONE xr A ee aed die Ua e date CT tion 1 3 Operation 1 4 Alarms Figure 1 Summary Alarm Terminal Mag Sanne Figure 2 Discrete Alarm Terminal mea Figure 3 Control Board 1 5 Specifications MR050B Dehydrator Section 2 Installation A 2 1 Unpacking and Inspection 2 2 Controls and Displays 2 3 Installing the Dehydrator 2 3 1 19 Rack Mounting or set on shelf Dp 24 Power Connections 4 204 sus eee a he Ah durs FP ee OUR UR 2 4 2 Safety Ground ar ku ats Sa t t t a TL 2 43 Testthe Dehydrator 2 5 Connecting the Alarm Outputs due de NE MAC dad ee gui TT doe 2 6 Connecting Dehydrator to the Transmission Line 2 7 Purging the Transmission Line Section 3 Maintenance 3 0 Maintenance ji 3 1 Preventive Maintenance Ee 3 2 Desiccant Replacement lll lll ll ll 3 3 Annual Inspection PM 00000000 00 3 4 Check the electrical connections vl a ce D as dae 3 5 Check the duty cycle men nee naa anu aaa naa 44 3 6
4. HJ BLACK WHITE i RED COMPRESSOR Figure 4 MR050B 31015 Wiring Diagram 11 MR050B SERIES DEHYDRATOR USER MANUAL AVAD MOTIJA 395NVHO Q3 H9v14 N33H9 ANId NMOYJ4a anid NYL 813 35 4 wesbeiq BUHIM GLZLE AOGONN S 91n614 YJOSSIYAANOD 12 MRO50B SERIES DEHYDRATOR USER MANUAL 4ALSINVO INVOOIS3G 318 VSOdASIO ONILLIA 8 weibeig 2neuineug 9 31N l4 YOSNAS dHnssasud MOT 8 LAdLNO 140d y 13 MRO50B SERIES DEHYDRATOR USER MANUAL Section 5 Section 6 Replacement Parts Customer Service Go to commscope com eCatalog for the most current 6 0 Introduction parts available for your dehydrator http www commscope com Product Catalog market wireless 6 1 Desiccant Kit MRO50B KIT DSCNT ZZ m 0000 VIP Compressor Kit MRO50B KIT CPRSR 14 CommScope provides in warranty and out of warranty repairs as well as dehydrator and compressor overhauls from several Repair Centers Coordination of these services is provided through the nearest Sales Office or Customer Service Center The Center is also prepared to help you with the following Technical Assistance Troubleshooting Repairs Loaner Units Spare Parts Installation Materials System Accessories In Case of Trouble The first step you should take if trouble develops using a dehydrator is to read the operators manual and fo
5. MENDATION Verify unit operates normally and return to Service MRO50B SERIES DEHYDRATOR USER MANUAL Section 4 Troubleshooting If you experience difficulty with your dehydrator use the troubleshooting procedures described below Caution Electrical troubleshooting reguires access to potentially dangerous voltages and should only be performed by a licensed electrician Problem Condition Solution If the display light fails to light make sure the unit is plugged in and power outlet is operating If you still have no light unplug the unit remove the unit cover and check for loose connections Refer to the wiring diagram for proper connections Check to assure that the fuse is OK Check to assure that proper ac voltage is being supplied to the input Plug the unit output with finger and observe pressure gauge The pressure gauge line should read approximately 0 5 psig and the alarm should clear If alarm does not clear remove cover and verify tubing and wiring connections are secure Dehydrator display does not light unit does not run Low pressure alarm activated If the pressure does not remain constant after plugging the output apply leak detector to isolate the leak in the dehydrator exercise care when applying solution not to wet wiring or electronics If the problem persists contact CommScope Customer Service Compressor does not turn OFF Check for leaks 10 MRO50B SERIES DEHYDRATOR USER MANUAL
6. ding upon model number Warranty details are available on our web page If your unit falls within its warranty period inspection and repairs will be performed at no charge and the unit will be promptly returned to you If a warranty unit is deemed no problem found an inspection fee and freight will be charged to the customer OUT OF WARRANTY REPAIR We will inform you with the cost of repair and obtain your approval to proceed with repairs or if you elect not to have the unit repaired your instructions on disposition of your unit When repairs are complete we will return your unit and invoice you for the inspection charge materials used for the repair and labor applied to complete the repair If you elected not to repair the unit we will invoice you for the inspection and freight charge if unit is to be returned LOANER UNITS Loaner units are available from the repair center to maintain your system 15 while repairs are being performed If you feel you need a loaner please contact us at 817 864 4160 A P O for the full value of the unit must be issued prior to shipment Also contact us when the loaner is ready to be returned so that we can issue a NEW RMA number to identify your return and create the appropriate credit to your account Damages to loaner will be deducted from the P O PACKING INSTRUCTIONS Pack your unit securely for shipment to the Repair Center If you received a loaner unit we suggest you use the box
7. e sure the power circuit is properly grounded Two power cords are supplied one 115 Vac American and one 240 Vac International CAUTION Proper electrical connection is required It is suggested a licensed electrician be contracted to connect the AC wiring to the unit if it is connected directly to the mains Failure to properly connect the power wires could result in a dangerous electrical shock hazard CAUTION This unit is designed for connection to a single phase power source Connection to a 3 phase power source will cause significant damage to internal components MRO50B SERIES DEHYDRATOR USER MANUAL White stripe wire 2 4 2 Safety Ground Ensure an electrical safety ground is installed on the ground stud located adjacent to the power input connector It is intended to be customer installed in the field to your halo grounding system 2 4 3 Test the Dehydrator Turn the dehydrator ON and check the output port on the rear of the unit to make sure air is flowing 2 5 Connecting the Alarm Outputs To connect the alarms locate the alarm output terminal block on the front of the unit See section 1 4 for alarm location 2 6 Connecting Dehydrator to the Transmission Line CAUTION Check the antenna and transmission line system pressure rating before connecting the dehydrator to the system Insert one end of the 3 8 polytube feed line tubing into the compression fitting on one of the dehydrat
8. ggested overhaul for every 3000 hours of compressor operation 3 5 Preventive Maintenance The annual maintenance of a MRO50B consists of a preventative maintenance inspection of the dehydrator These tasks can easily be performed in the field with the unit connected to the transmission line system In addition to the annual inspection a complete overhaul is recommended every 3000 hours or sooner if local conditions warrant Desiccant Canister Replacement As the desiccant becomes saturated over time it will change from blue to pink or orange to green When the desiccant is exhausted there will be a degradation of performance In order to replace the desiccant simply turn the unit off disconnect 3 6 the desiccant canister from the pneumatic lines and replace the entire canister Annual Inspection Inspection includes checking for loose or damaged hoses fittings and electrical connections Remove the desiccant canister and verify that there are no leaks in the pneumatic lines 3 7 Warning Electrical Hazard Unplug power cord before servicing unit Check the electrical connections Check the screw at the power input connector to ensure that the ac power cord is securely terminated Check the screw in alarm terminals to ensure that all wire connections are tight A loose or damaged connection may result in erratic operation and unnecessary downtime Refer to the troubleshooting section if an electrical
9. he connections Refer to Figure 1 and 2 for correct locations and colors of the wires on the alarm terminal strip MRO50B SERIES DEHYDRATOR USER MANUAL BLACK WHITE RED WIRE TERMINAL COLOR WHITE Figure 1 Summary Alarm Terminal AQQ WHITE LOO TAN es OO BLUE OO BROWN DO PINK WIRE FUNCTION REFERNCE WIRE TERMINAL COLOR ALARM FUNCTION s Green sumo 8 voer PoweRrALCOM s rep POWERFALNC Figure 2 Discrete Alarm Terminal Alarm Definitions Summary Activates when the High Pressure only indicated on summary contacts Excess Run and or Low Pressure alarms are triggered The summary alarm does not report Power Fail Power Fail Activates open when power is removed from the dehydrator This includes turning the power off at the Switch Excess Run Factory strapped run time set in accordance with the normal run time for the dehydrator application Selectable times are 1 10 30 120 and 240 minutes with the 10 minute selection used on the MROSOB as the default setting Low Pressure If system pressure falls below the low pressure trigger point factory set on the MRO50B the low pressure alarm sensor will activate an alarm contact This alarm is an indication of a significant system leak or a dehydrator failure Note All of the alarms clear and reset automatically but can be manually reset in the display menus However if the alarm condition still e
10. llow the trouble isolating procedures given in it If the steps in the manual do not identify and remedy the problem then contact an CommScope Customer Service Center for 24 hour telephone assistance Record the Model Number e g MRO50B and Serial Number from the product label as you will be asked for these when you call Two main locations are currently available to help COMMSCOPE 3 Westbrook Corporate Center Suite 900 Westchester IL 60154 USA From North America Telephone 1 800 255 1479 Fax U S A 1 800 349 5444 International Telephone 1 779 435 6500 Fax Number 1 779 435 8579 Web Access Internet www commscope com Email prc commscope com 6 2 6 3 MRO50B SERIES DEHYDRATOR USER MANUAL Initial Steps by CommScope When your call or fax communication is received the CommScope staff will work with you to pinpoint the possible cause of trouble If the pressurization equipment is suspect they will ask for your unit Model Number and Serial Number e check the warranty status of the unit advise the availability of a loaner unit provide an estimate of the cost for inspection and repairs if the unit is out of warranty fax a Return Material Authorization Sheet to you Repair Center Process A method of Payment must be provided prior to issuing of RMA regardless of warranty status IN WARRANTY REPAIR Most CommScope pressurization products carry a warranty of one to three years depen
11. ntrols and Displays Default password is 1111 Familiarize yourself with the controls and displays prior to installing or testing the dehydrator Keypad Controls Advances display scrolls ahead to the next display or program mode with out changing the values in the microprocessor memory Numerically increase displayed settings in display window When depressed longer than 1 2 second scrolling will occur at a faster rate Numerically decrease displayed settings in display window When depressed longer than 1 2 second scrolling will occur at a faster rate Enters into the microprocessor memory the values displayed in the window and advances display scrolls ahead to the next program or display mode Used to allow the user quick access to the system event log 2 3 Installing the Dehydrator 2 3 1 19 Rack Mounting or set on shelf MRO50B can be mounted in standard 19 inch equipment rack mounted to a wall with ear s or placed on an optional shelf 2 4 Power Connections Confirm your dehydrator electrical input matches the available power Ensure an electrical safety ground is installed on the ground stud located adjacent to the power input connector It is intended to be customer installed in the field to your halo grounding system 115 Vav 60 Hz 240 Vac 50 Hz 24 Vdc 48 Vdc 2 4 1 AC Power AC units can be connected into a standard 15 Amp power receptacle of the proper voltage via the power supply Mak
12. or output ports Tighten securely with a 9 16 wrench Be careful not to over tighten Connect the other end of the polytube to the transmission line Note If the transmission lines have not been purged continue with section 2 7 Otherwise proceed to section 3 2 7 Purging the Transmission Line Air in the transmission line system must be replaced with dry air to ensure satisfactory operation of the transmitted signal 1 Determine the total system volume 2 Divide the system volume by the flow rate of the dehydrator 3 0 SCFH to determine the number of hours needed for the purge cycle Open the far end of the transmission line Operate the dehydrator for three purge cycles If it is not possible to open the far end of the transmission line follow these steps 1 Connect the dehydrator to the transmission line and pressurize the system The system pressure should reach 0 5 psig 2 Wait 15 minutes while the air absorbs moisture in the system then disconnect the dehydrator from the transmission line and allow the air to vent 3 Repeat steps 1 and 2 twelve times to purge the system MR050B SERIES DEHYDRATOR USER MANUAL Section 3 3 4 Maintenance 3 0 3 1 3 2 3 3 Maintenance The MR050B Dehydrator requires relatively little maintenance to ensure satisfactory operation over long periods of time This section outlines the recommended annual preventive maintenance for the unit and the su
13. peration MRO50B series dehydrators include a compressor color indicating desiccant high and low pressure sensors and a low pressure alarm sensor When system pressure falls to a preset low limit the low pressure sensor activates the compressor Air is channeled through a desiccant canister where moisture is adsorbed The air exits the drying canister at 40 C 40 F dew point It is then channeled directly to an internal 4 port manifold When system pressure reaches a preset high limit the high pressure sensor shuts off the compressor A check valve prevents system dry air from retreating back through the compressor If system pressure falls significantly below the low pressure trigger point the low pressure alarm sensor will activate an alarm contact This alarm is an indication of a significant system leak or a dehydrator failure Alarms The MRO50B offers Low Pressure and Excess Run alarms as a standard feature Indicated on a summary alarm connection The discrete alarm option includes Low Pressure Excess Run and Power Fail alarms which report through discrete contacts Alarm conditions are indicated on the display The alarms are Form C dry contacts and have connection options for Normally Open NO or Normally Closed NC configuration The external alarm monitoring system supplied by others is connected to the terminal strip located on the front of the unit small slotted screwdriver is necessary to make t
14. problem is encountered Check the duty cycle Check the hour meter on the front panel to determine the duty cycle of the dehydrator If the dehydrator has been running for more than 10 of its installed time check the systems for leaks Parts Replacement When the MRO50B dehydrator unit is in need of service the main components are simply replaced The compressor desiccant canister and control module are all meant to be replaceable parts The parts can be purchased from CommScope for field replacement or the unit can be sent to the repair center for component replacement Unit Shutdown and Removal In order to perform an overhaul on the MRO50B the unit must be turned off and removed from service As this is being done the low pressure alarm may activate through a reporting alarm system Personnel monitoring such an alarm should be notified in advance so that they are aware of the fact that service is being performed It is also necessary to disconnect the dehydrator dry air output from the waveguide system during the overhaul MR050B SERIES DEHYDRATOR USER MANUAL pucu Remove the chassis top and front panels for overhaul 1 Unplug the unit from the power supply 2 Follow the instructions included in the compressor replacement kit When the replacement is complete reinstall 3 8 Service Restoration RECOM
15. the unit This appliance is not intended for access by the general public This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Description 1 4 Series dehydrators provide dry air for pressurizing small up to 280 liters or 10 cubic feet in volume antenna and transmission line systems The dehydrators produce 40 C 40 F dew point dry air at a nominal rate of 1 4 liters 0 05 cubic feet per minute up to a total of 8495 liters 300 cubic feet on a single desiccant canister Each dehydrator consists of an electrically driven air compressor a desiccant canister an automatic transmission line pressure sensing system and alarm outputs housed in a rigid metal chassis It is designed to mount directly to the rack directly on a wall or as a free standing unit The front panel features a control interface with display for alarms and pressure For easy serviceability power connections alarm output connections and the desiccant canister are easily accessible from the front of the unit The MRO50B maintains transmission line pressures between 2 0 and 3 4 kPa 0 3 and 0 5 psig It is intended for use with high performance microwave antennas and earth station antennas O
16. xists the alarm will return immediately after being reset MRO50B SERIES DEHYDRATOR USER MANUAL USB NOT IN HIGH PRESSURE USE SENSOR U2 Vdc INPUT P2 MRO50B ONLY 115 Vac COMP OUTPUT MT PMT SERIES LOW PRESSURE SENSOR U4 SOLENOID FILTER DRAIN MT PMT SERIES P6 AC an 48 Vac COMP OUTPUT SUM ALARM KEYPAD DISCRETE ALARMS ONLY J4 P9 Figure 3 Control Board 1 5 Specifications MR050B Dehydrator Cut Out Pressure kPa psig 3 5 0 5 Output Connectors 3 8 polytube compression Cut In Pressure kPa psig 2 0 3 Dimensions Height cm in 13 2 5 2 Width cm in 43 9 17 3 Output capacity 85 SLPH 1 4 SLPM Depth cm in 20 3 8 0 3 0 SCFH 0 05 SCFM total approx Net weight kg Ib 7 26 16 Output Dew Point 36 C 33 F Alarms or better Operating Temperature 1 to 40 C Power Fail Alarm loss of input power Range alt E Excess Run Alarm 10 minutes factory set Electrical Input 24148 Vdc 115 240 Vac 50 60 Hz Low Pressure Alarm factory set adopter High Pressure Alarm factory set Power Consumption 11 watts continuous MR050B SERIES DEHYDRATOR USER MANUAL FF w Section 2 Installation 2 1 Unpacking and Inspection Open Carton Remove the top piece of foam packaging Carefully remove the installation accessories manual and dehydrator Check the dehydrator for shipping damage such as dents or loose parts 2 2 Co
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