MR050B SERIES DEHYDRATOR USER MANUAL
Contents
1. 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 6 4 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 at one of the numbers listed under contact numbers 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 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 on outside of the box Address the box to the following Ship To Address COMMSCOPE PRESSURIZATION SERVICE CENTER RMA XXXXXXX 11312 S PIPELINE RD EULESS TX 76040 6629 Please note Units received with Biological animal contamination will be returne2. 3 MR050B 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 awapps commscope com catalog andrew catalog aspx 6 1 Desiccant Kit MRO50B KIT DSCNT 0000 cs 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 5 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 follow 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 3
3. 49 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 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 depending 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
4. COMMSCSPE Andrew Solutions MRO50B SERIES DEHYDRATOR USER MANUAL Bulletin AE01B A0553 001 Rev N 2009 2012 CommScope Inc All rights reserved 12 12 MR050B SERIES DEHYDRATOR USER MANUAL Table Contents Section 1 General Information sss 22 cae wee eee bee xA dee RR mE 1 1 Introduction suu tae Dex LEN OD ew Va eA ore cy sce UR Wa v re 1 2 Big EMITTE 1 3 Operation 1 4 Alarms Figure 1 Summary Alarm Terminal Mag cux ue xr ud Eat Figure 2 Discrete Alarm Terminal Figure Control Board 1 5 Specifications MR050B Dehydrator Section 2 Installation 2 1 impacting and Insecta 2 2 Controls and Displays 2 2 1 Event Log Codes 2 3 Installing the Dehydrator i 2 3 1 19 Rack Mounting or set on shelf occ 24 Power Connections oos o o ooe dot ace ep rones des 2 4 2 Safety Ground IT P 243 Testthe Dehydrator 2 5 Connecting the Alarm Outputs DURUM E Wage ane ae aca red 2 6 Connecting Dehydrator to the Transmission Lie lug debent Takes at Bee esed 2 7 Purging the Transmission Line Section 3 Maintenance 3 0 Maintenance P 3 1 Preventive Maintenance id ud 3 2 Desiccant Canister Replacement 3 3 Annual Inspection eld dae E A Oe Ea uova 3 4 Check the electrical connections 3 5 Check the duty cycle die Ge ba lg we dae eed t
5. ctory 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 2 4 2 Safety Ground Open the far end of the transmission line Ensure an electrical safety ground is installed on 4 Operate the dehydrator for three purge the ground stud located adjacent to the power cycles input connector It is intended to be customer installed in the field to your halo grounding system 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 243 Test the Dehydrator Turn the dehydrator ON and check the output port on the rear of the unit to make sure air 5 2 Wait 15 minutes while the air absorbs flowing moisture in the system then disconnect the dehydrator from the transmission line and 2 5 Connecting the Alarm Outputs allow the air to vent 3 Repeat steps 1 and 2 twelve times to purge To connect the alarms locate the alarm output the system 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 p
6. d 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 RoHS Inquiries For inquiries on RoHS please contact the following CommScope Inc Corke Abbey Bray Co Dublin Ireland Attn Legal Department MRO50B SERIES DEHYDRATOR USER MANUAL 16
7. d 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 241 AC Power AC units can be connected into a standard 15 Amp power receptacle of the proper voltage via the power supply Make 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 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 satisfa
8. d maintain your MRO50B Series dehydrator Please take the time to read this manual before attempting to operate or service 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 MRO50B 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
9. ee 3 6 Parts Replacement 3 7 Unit Shutdown and Removal 3 8 Service Restoration 0 0 0 Section 4 Troubleshooting wed Sige a eS ee Problem Condition T cce Figure 4 MRO50B 31015 Wiring Diagram a liia e aure We e eo a as wee Figure 5 MR050B 31215 Wiring Diagram 12 Figure 6 Pneumatic Diagram 13 Section 5 Replacement Parts Sh Gee ans hoe ooo era Desiccant Kit MROSOB KIT DSCNT DTI Compressor Kit MRO50B KIT CPRSR 14 Section 6 Customer 14 6 0 Introduction 2 2 2 sss ls lle le s ss 4 6 1 In Case of Trouble 14 6 2 Initial Steps by CommScope sss 15 6 3 Repair Center Process sss 15 6 4 RoHS Inquiries 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 an
10. 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 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 See section 5 or 6 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 adva
11. is connected to the terminal strip located on the front of the unit A small slotted screwdriver is necessary to make the 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 TaN BLUE BROWN PINK WIRE FUNCTION REFERNCE WIRE TERMINAL COLOR ALARM FUNCTION s Green e PoweRrALCOM s 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 Al
12. kPa 0 3 and 0 5 psig It is intended for use with high performance microwave antennas and earth station antennas Operation 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
13. l of the alarms clear and reset automatically but can be manually reset in the display menus However if the alarm condition still exists the alarm will return immediately after being reset MRO50B SERIES DEHYDRATOR USER MANUAL USB P1 Vdc INPUT P2 MRO50B ONLY 115 Vac COMP OUTPUT MT PMT SERIES SOLENOID FILTER DRAIN MT PMT SERIES 48 Vac COMP OUTPUT P8 MRO50B ONLY NO NC SUM ALARM hi 27 HIGH PRESSURE SENSOR U2 LOW PRESSURE SENSOR U4 KEYPAD DISCRETE ALARMS J4 P9 Figure 3 Control Board 1 5 Specifications MR050B Dehydrator Cut Out Pressure kPa psig 3 5 0 5 Cut In Pressure kPa psig 2 0 3 Output capacity 85 SLPH 1 4 SLPM 3 0 SCFH 0 05 SCFM total approx Output Dew Point 36 C 33 F or better 1 to 40 C 34 to 104 F Operating Temperature Range 24 48 Vdc 115 240 Vac 50 60 Hz with ac to dc adapter Electrical Input Power Consumption 11 watts continuous Output Connectors Dimensions Net weight kg Ib Power Fail Alarm Excess Run Alarm Low Pressure Alarm High Pressure Alarm 3 8 polytube compression Height cm in 13 2 5 2 Width cm in 43 9 17 3 Depth cm in 20 3 8 0 7 26 16 Alarms loss of input power 10 minutes factory set factory set factory set MR050B SERIES DEHYDRATOR USER MANUAL FF Section 2 Installation 2 1 Unpacking and I
14. nce 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 RECOMMENDATION 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 requires access to potentially dangerous voltages and should only be performed by a licensed electrician Problem Condition Dehydrator display does not light unit does not run Low pressure alarm activated Compressor does not turn OFF 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 Figure 4 for summary alarm unit or figure 5 For discrete alarm unit Check to assure that the fuse i
15. nspection 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 Controls 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 SELECT 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 E Used to allow the user quick access to the system event log 2 2 1 Event Log Codes EV 0 Event Power Up EV 1 Event High Humidity Alarm EV 2 Event Excessive Run Time Alarm EV 3 Event Low Pressure Alarm EV 4 Event High Pressure Alarm EV 5 Event Compressor Fault EV 6 Event Log Cleared EV 7 Event Powering Down EV 8 Event Compressor Lifetime Eeprom Fail 2 3 Installing the Dehydrator 231 19 Rack Mounting or set on shelf MRO50B be mounte
16. olytube feed line tubing into the compression fitting on one of the dehydrator 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 MRO50B SERIES DEHYDRATOR USER MANUAL Section 3 3 4 Maintenance 3 0 3 1 3 2 3 3 Maintenance The MRO50B 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 suggested overhaul for every 6000 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 6000 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
17. s 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 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 See section 6 Check for leaks 10 MRO50B SERIES DEHYDRATOR USER MANUAL HOLS3HHV SNIN LH9T1 weibeiq SLOLE SOSOMIN 91 14 YJOSSIYANODO o qau DEA 9t cal va LW HOLIMS YIMOd ALIHM Q34 MOV1d Movia 11 MRO50B SERIES DEHYDRATOR USER MANUAL AVHO MOTI3A JONVHO Q34 Moviga N3349 ANId NYL 3LIHM Wav IV YOLSAYYV weibeiq SLZLE HOSOMIN S 91 14 55 e 9 A9V lg Q34 Q34 sal va HOLIMS H3MOd ev LV A9V lg 12 MRO50B SERIES DEHYDRATOR USER MANUAL wesbeig 91jeunaug 9 ainbi4 HOSN3S J3Y4NSSIYA en YJOSSIYANODO SNI LLIA avaHxing ONILLIA avaH xring LNdLNO YALSINVD 1NVI9IS30 318 VSOdASIO Q IO3INVW LAdLNO LYOd 1
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