MT SERIES DryLine® DEHYDRATOR USER MANUAL
Contents
1. 14 3 3 Shutdown Procedure 14 Section 4 Theory of 15 4 1 Dehydrator15 4 2 Dehydrator Control x sre dee cha suspa dae eid xus x dea deg EEG Figure 5 Door Schematic 16 Figure 6 Chassis 17 Section 5 Maintenance 18 5 1 Semi Annual Preventive Maintenance Inspection 18 5 2 Replace Compressor Air 16 Section 6 In Case of 19 MT Series DryLine Dehydrator User Manual Section 7 Section 8 Section 9 Parts Replacement and Dehydrator Overhaul Parts Replacement Unit Shutdown and Door and Panel Removal Replace Power Switch 2 2 2 Replace Circuit Breaker Replace Time Delay Module Replace Replace Heat 7 14 Specifications err Customer2. 1 8 NPT 1 PSIG AE01J 0174 009 System pop off valve 1 8 NPT 2 PSIG AE01J 0174 001 System pop off valve 1 8 NPT 3 PSIG AE01J 0174 011 Street Tee 1 8 NPT EFTGP 25522 26 MT Series DryLine Dehydrator User Manual Section 9 9 3 Customer Supprt 9 1 9 2 Introduction 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 9 4 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 Ifthe 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 MT500B 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 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 mws commscope com 27 I
3. Supprt Les RED che dee AU E sas bee God sss ACE RU 9 1 9 2 9 3 9 4 Filter Bowl Replacement Replace Water Filter Element 6000 hour Maintenance Replace Coalescing Filter Replace Cooling Fan sss sea hon Replace Alarm Board Replace Pressure Switch llli lll ll lla ls le se Introductio RE REPLIES a In Case of Trouble ia ss llo ee s exceed Rock wa s Wea Ged do qoe d Initial Steps by CommScope Repair Center 5 MT Series DryLine Dehydrator User Manual 1 1 Introducing New DryLine Dehydrator The CommScope DryLine MT1000 2000 Dehydrator are a new generation of pressurization equipment for antenna and transmission line systems They feature a new patented membrane separation drying technology the industry s best performance and reliability Each large DryLine dehydrator is a pressurization system built into a convenient chassis floor mounted package It is a self contained unit containing many components which in other systems are typically pieced together on site This Manual contains the information you need to install operate and maintain your DryLine MT Series dehydrator 1 2 Description DryLine dehydrator provide a s
4. function properly and you have the latest filter bowl assembly continue can result in damage to the transmission line to section 7 10 and 7 11 system 7 11 Replace Coalescing Filter Element 7 10 Replace Water Filter Element 6000 hour The coalescing filter is located downstream Maintenance from the water filter Its function is to remove any water fog which may still be present in the air leaving the water filter The coalescing filter traps any fine liquid water particles including aerosols and causes them to coalesce into larger droplets These droplets fall to the bottom of the bowl and are blown out and carried to the compressor head where they evaporate When ambient room air is compressed in the dehydrator compressor liquid water is formed This liquid water must be removed in order to allow the membrane dryer to function at its peak efficiency As the air exits the compressor it is cooled in the heat exchanger and then enters into the water filter The air swirls around the inside of the filter bowl separating the liquid To replace the filter element twist and remove water out on the sides of the filter bowl A5 the filter bowl from the cast housing Unscrew micron filter is also provided in the water filter the filter element from the cast filter housing and to prevent water droplets from exiting the filter replace with a new filter Do not attempt to clean This 5 micron filter also filters out any dust the filter elem
5. 0 212 6 1 8 194 0 18023 8 624 4 312 0 976 0 488 8 3 16 347 0 32236 15 424 7 712 1 748 0 874 Guideline Waveguide for UHF TV Pressurized to 2 Ib in 14 kPa GLW1350 994 92343 44 16 22 08 2 000 1 000 GLW1500 1227 113988 54 52 27 26 2 480 1 240 GLW1700 1576 146410 70 04 35 02 3 200 1 600 GLW1750 1670 155143 74 24 37 12 3 36 1 68 PressureRating These Line Types are for refernce only Please go Ib in2 kPa to commscope com and use the Pressurization Calculation program Caution Maximum pressure ratings for reference only uMx 459 465 611 and HPX12 6511Cand contact the antenna groupfor actual pressure P 186 Antennas have lowerpressure ratings Specificfeeds and pressure windows may ratings than the Antennasas indicated in havereduced pressure ratings the chart below 12 MT Series DryLine Dehydrator User Manual This page has been left blank on purpose 13 MT Series DryLine Dehydrator User Manual Section 3 3 2 Operation 3 1 Pressure Monitoring and Control Pressure Monitoring Points Dehydrator output pressure is monitored at the transmission line on all models by the Remote Sense port on the top of the unit CAUTION Do not operate the unit without the Remote Sense line connected this may cause an over pressure condition that may damage the waveguide 3 3 Dehydrator Duty Cycles The dehydrator is programmed at the factory to start when the output pressure of the dehydrator drop
6. C position All alarms are dry contacts and can be ganged together if a single alarm is desired Figure 4 Upper terminal strip 2 7 MT Series DryLine Dehydrator User Manual Connect to Power Supply 2 8 The MT Series can be plugged into a standard 20 amp power receptacle of the rated voltage Electrical connections require separate circuits when multiple dehydrators are installed Connect the dehydrator to a properly grounded power outlet Power is specified in Section 8 Physical Specifications Grounding Instructions This product should be grounded In the event of an electrical short circuit grounding reduces the risk of electric shock by providing an escape 29 path for the electric current This product is equipped with a cord having a grounding wire and a grounding plug It should be plugged into a properly installed outlet that is grounded in accordance with all local codes and ordinances Danger Improper installation of the grounding plug can result in a risk of electric shock If repair or replacement of the cord or plug is necessary do not connect the green grounding wire to either flat blade terminal Check with a qualified electrician or serviceman if you have any questions regarding grounding or if in doubt as to whether the product is properly grounded 2 10 Connection to a Halo Grounding System 10 grounding stud is located at the inside power entry area of the dehydrator chassis fo
7. COMMSCOPE MT SERIES DryLine DEHYDRATOR USER MANUAL Bulletin AEO1B A0496 001 Rev F 2008 2011 CommScope Inc All rights reserved 12 11 MT Series DryLine Dehydrator User Manual Table of Contents Section 1 General Information rt 4 1 1 New Dine Dehydrator eene es d 1 2 Description m 4 1 3 Introducing the DryLine Dehydrator 4 Section 2 Installation sa 5 2 1 Unpack we and Inspect for Sipping Damage 2 5 2 2 Perform Pre System Startup Test 5 2 3 Placing the Dehydrator raD Figure 1 Filter Bowls 5 2 4 Install Polyethylene Tubing Lines 6 2 5 Connection Procedure HEU 0 Figure 2 MT Series System configuration diagram Basic DEPT Figure 3 MT Series System diagram 8 2 6 Connect Alarm Wiring 9 Figure 4 Upper terminal strip Ex 2 7 Connect to Power Supply or Wu 2 8 Test the Unit E Bele he LIO 2 9 Connect to Dry Air Cable System esse e ee e en cee eee fO 2 10 Purging Procedure uos E EM E LL Section 3 Operation 2 diu 228 see Ges Kod oes Rar eee aoe ol 3 1 Pressure Monitoring and Control 14 3 2 Programming information
8. cess 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 28
9. e lower right side of the upper front door Disconnect the three wires and the two resistors from the module terminals carefully noting the location of each wire Remove hardware which secures the module to the chassis Remove relay and replace with a new module using existing hardware Reconnect the wires and resistors Replace Compressor Disconnect Wiring With the side doors removed remove the cover plate on the compressor covering the electrical connections Loosen the ground screw and remove the green wire from the connection box Disconnect the white wire terminal 1 and black wire terminal 2 from the motor connections The compressor should now be free of any electrical connections to the unit Disconnect Tubing Remove the milky white hose which runs from the compressor outlet to the heat exchanger inlet Again it may be necessary to cut the clamp and hose to remove it from the heat exchanger Using the old tubing as a template cut the replacement tubing to length using a sharp knife Remove the drip pan assembly from the head of the old compressor and remount it to the replacement compressor The compressor assembly should now be free of all tubing connections Compressor Remount and Reassembly Remove the bolts which secure the compressor to the back mounting plate Carefully remove the compressor assembly from the chassis Mount the compressor assembly to the back mounting plate using the existing hardware Do n
10. ent If it is necessary to clean the particles or other contaminants which would filter bowl use a mild soap and water solution lessen the efficiency of the membrane dryer and rinse with water Do not use solvents Reassemble the unit by reversing the above procedure Check for leaks by turning the unit on and applying a dilute detergent and water solution at the bowl housing seal and at the hose fittings which were reconnected If no leaks are found the unit is ready to return to service If leaks are located repair the leak and recheck for additional leaks Leaking fittings must be repaired or the unit will not function properly and can result in damage to the transmission line system 23 MT Series DryLine Dehydrator User Manual 7 12 Replace Cooling Fan The cooling fan ventilates the dehydrator enclosure thus cooling the compressor and the heat exchanger Failure of a fan can result in saturation of the membrane dryer and damage to the compressor To remove the fan disconnect the fan leads and remove the mounting hardware Install the replacement fan using the existing hardware Orientation of the ac power leads is not critical 7 13 Replace Alarm Board With the front door open on the dehydrator disconnect the wiring from the alarm board carefully noting the location of each connector Remove the hardware which secures the alarm board to the door panel Ins
11. eshooting Procedure Problem Condition Dehydrator on off switch does not light unit does not run Dehydrator on off switch does not light unit runs Dehydrator starts and stops before reaching sufficient line pressure Low pressure alarm LED illuminated Humidity alarm on display CAUTION The humidity sensor is light sensitive DO NOT remove it from the brass fitting when the dehydrator is powered up Excess run time alarm LED Illuminated Dehydrator turns on for only a few seconds and then shuts off Check the breaker adjacent to the on off switch if tripped white indicator exposed then reset breaker If on off switch light still fails to light make sure that unit is plugged in and the power outlet is operating If you still have no light unplug unit open the front door panel and check for loose connections Refer to wiring diagram for proper wire connection Disconnect ac power open front doors check for loose connections refer to the wiring diagram for proper connections Replace cover and reconnect ac power Replace on off switch if condition persists Check for leaks in the transmission lines or line tubing Check for kinks in line tubing Replace tubing where necessary Check remote sense line Make sure any isolation valve is wide open Isolate the low pressure condition by checking all fittings with soapy water Make sure that all system tubing is properly seated in the fittings Check fo
12. fibers The water vapor and a small amount of the air permeate through the filter walls leaving the exiting air with a reduced water vapor content of 45 C 50 F dewpoint The air that permeates through the fibers purges the water vapor out of the tubes vent ports This patented drying process contains no moving parts thus reducing maintenance and increasing reliability Dehydrator Control The ultra dry air exits the dehydrator at the top of the unit Low pressure High Humidity and Excess Run alarms are tapped into the air line within the dehydrator 15 MT Series DryLine Dehydrator User Manual 100g ainbi4 rav YOLIANNOD JIVA 182 10230 HOLIMS 33O NO 5 55344 1N3W313 YOSNAS ALIGIWNH HOLIMS 3905539 16 MT Series DryLine Dehydrator User Manual 2 sisseyy 9 n ly QION3 10S punoig sisseu o 100g NYO QION3 10S aNnOH9 SISSVHO KP o o Hm OIO T3A NHO YOLIANNOD 17 dnd MT Series DryLine Dehydrator User Manual Section 5 Maintenance 5 1 The dehydrator requires maintenance semiannually and after each 6000 hours of operation to ensure continued reliable operation Danger Service personnel should observe all safety regulations Do not perform maintenance on equipment without
13. first turning off the main power supply Under certain conditions dangerous potentials may exist when the main power supply controls are in the off position Only qualified technicians should attempt to effect maintenance or repairs on electrical equipment Semi Annual Maintenance The semi annual maintenance consists of a preventive maintenance inspection and replacement of the compressor air filter These tasks can be performed easily in the field as described below 6000 hour Overhaul A dehydrator overhaul is required after the compressor has run a total of 6000 hours as indicated on the compressor run time meter The dehydrator overhaul includes a compressor overhaul water filter high temperature tubing and hose clamps The dehydrator overhaul kit see Section 7 0 includes all the necessary parts and 5 2 instructions Or if you prefer CommScope offers a dehydrator overhaul service Contact CommScope Technical Service Telephone numbers are found in Section 9 Refer to Sections 7 9 7 10 and 7 11 for procedures to replace water filter elements In Case of Difficulty If the dehydrator will not operate or if there are other problems refer to the troubleshooting procedures in Section 6 Semi Annual Preventive Maintenance Inspection Inspection includes checking for loose or damaged hoses fittings and electrical connections Check the following items 18 Water Filter and Coalescent Filter and Elements Ve
14. leed back through the membrane dryer This air maintains the dryness of the membrane dryer As system air bleeds back through the dryer additional system moisture is continually removed lowering the system dew point even further The front panel gauge should reflect the system pressure Your system is now up and running at the factory programmed settings Connect the alarm wiring to the terminals on the inside of the unit Refer to the label on the alarm board or the schematic for the proper connections 11 MT Series DryLine Dehydrator User Manual Time to Purge 1000 ft 305 m Time to Pressurize to in Hours per 3 Volumes Operating Pressure In Hours Line Type Volumes Per 1000 ft 305 f pert000 ft MT1000 MT2000 MT1000 MT2000 HELIAX Coaxial Cable Pressurized to 5 Ib in 35 kPa 3 36 7 3410 1 64 0 82 184 092 4 69 9 6494 3 12 1 56 352 176 5 117 0 10870 5 20 2 60 588 294 HELIAX Elliptical Waveguide Pressurized to 5 Ib in 35 kPa EW34 25 0 2323 1 112 0 556 0 124 0 062 EW28 36 0 3345 1 6 0 8 0 360 0 090 EW20 60 5 5621 2 688 1 344 0 304 0 152 EW17 71 0 6596 3 156 1 578 0 356 0 178 Circular Waveguide Pressurized to 5 Ib in 35 kPa WG269 39 5 3670 1 756 0 878 0 200 0 100 WC281 43 1 3746 1 916 x 0 958 0 216 0 108 Rigid Transmission Line Pressurized to 5 Ib in 35 kPa 3 1 8 48 7 4524 2 164 1 082 0 244 0 122 4 1 16 84 0 7804 3 732 1 866 0 424
15. ll the isolation shutoff valves The valves when used on output lines allow the system to retain pressure while the system is removed for servicing Place each valve in line between each output and transmission line Do not install the Remote Sense and Output lines into a Tee Fitting into one port on the transmission line The dehydrator will not operate properly CAUTION Do not operate the unit with the Remote Sense line disconnected this may result in an over pressure condition Also be sure that any isolation valves are open before operating the unit MT Series DryLine Dehydrator User Manual MT Series System configuration diagram Basic This configuration shows proper hook up for sys tems when only a single waveguide is required in the system Remote Pressure Sense Line Isolation Shut off Valves Dehydrator Output Line MT Dehydrator Figure 2 MT Series System configuration diagram Basic Primary Large Wave Guide CAUTION Note To provide extra over pressure protection a Do not operate the Dehydrator with the secondary pop off valve may be added at this point system isolation valves closed or with the that is closely matched to the maximum system Remote Sense line disconnected Serious safe pressure See specification page for options damage to the wave guide due to over available pressure can occur 7 MT Series DryLine Dehydrator User Manual MT Series System configuratio
16. n diagram Multi Line This configuration shows proper hook up for systems when when more than a single wave waveguide is required in the system For larger systems an 8 output manifold can be added This diagram can also be used for hooking a DP 4A 001 or 6600D Series to the system Sense Line Isolation Shut off Valves Dehydrator Output Line MT Tee Dehydrator Fitting DP 4A 001 or 6600D or L6600D or LM400 Series Manifold Any other Monitor or Manifold can be used Outputs to other in this location to Wave Guides expand the system Figure 3 MT Series System configuration diagram Multi Line CAUTION Note To provide extra over pressure protection a Do not operate the Dehydrator with the secondary pop off valve may be added at this point system isolation valves closed or with the that is closely matched to the maximum system Remote Sense line disconnected Serious safe pressure See specification page for options damage to the wave guide due to over available pressure can occur 8 MT Series DryLine Dehydrator User Manual Function Terminal Symbol Open the front door and connect the alarm Common terminal block as shown figure 4 High Humidity Common Upper terminal strip HEN Low Pressure Common PowerFal Common If Normally Closed contacts are desired move the jumper on the PC boards to the N
17. ng time NOTE To clear the Excess Run alarm turn the power off and then on Shutdown Procedure When removing your dehydrator from service you may need a substitute dry air source Call CommScope Technical Service Telephone numbers are listed in Section 9 Before turning off the unit notify personnel that alarms may be activated To shut down the MT Series unit turn the ON OFF power switch to the OFF position and close the isolation shutoff valves located in the output input lines to retain system pressure Disconnect by unscrewing the poly tube compression fittings located at the top of the unit MT Series DryLine Dehydrator User Manual Section 4 Theory of Operation 4 1 4 2 Dehydrator The patented drying system begins at the compressor where filtered ambient air is compressed The compressed air is then cooled and condensed in the heat exchanger after which water droplets are separated in the water filter The saturated air then passes through a coalescing filter for the removal of additional water and then into the patented membrane cartridge where the remaining water is removed by pressure differential The water separated in the filters is blown to a pan on the head of the compressor and is evaporated by the heat of compression The flow of the water is controlled by a timer controlled solenoid The membrane tube separates moisture from air by a pressure differential across semipermeable
18. nitial 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 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 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
19. ns as one of the standard features a reading of overhaul kit listed below contains all necessary actual compressor run hours parts Alternatively you may send your dehydrator to CommScope for overhaul Three Year Recommended Dehydrator Spare Parts Part Number 1 Compressor Air Intake Filters 1 46173 1 bag of six 2 Compressor Air Intake Filters 1 46173 complete assembly housing w filter 4 Dehydrator Overhaul Kit Includes compressor 1 AE01K C0398 018 overhaul kit high temperature hose clamps Filter Bowl Assembly 5 0 0 01 AE01J A1978 650 6 Filter Water 5 0 AE01J A1978 601 Filter Coalescing 0 01 AE01J A1978 602 Check website for latest updates to manual and parts lists 21 7 1 7 2 7 3 7 4 7 5 MT Series DryLine Dehydrator User Manual Parts Replacement Procedures When the dehydrator run time reaches 6000 hours it will be necessary to rebuild the compressor and replace the hoses clamps water and coalescent filter elements The necessary parts and instructions are included in the over haul kit listed in Section 7 0 7 6 Following are procedures for replacement of the parts listed in Section 7 0 Unit Shutdown and Removal In order to perform parts replacement on the MT DryLine Dehydrator it will be necessary to turn off the unit and remove them from service As this is done one or more of the alarms may be 7 7 activated Personnel who may be monitoring these alarms sho
20. ot overtighten the mounting screws Reconnect the hoses clamps as supplied with the compressor replacement kit and wiring MT Series DryLine Dehydrator User Manual 7 8 Replace Heat Exchanger To replace the filter element twist and remove the filter bowl from the cast housing Unscrew the filter element from the cast filter housing and replace with a new filter Do not attempt to clean the filter element If it is necessary to clean the filter bowl use a mild soap and water solution The heat exchanger is located at right side of the unit under the side panel Under normal conditions the heat exchanger should not need to be replaced Replace it if the dehydrator has been dropped and rinse with water Do not use solvents or otherwise damaged such that the heat Reassemble the unit by reversing the above exchanger is leaking air procedure Check for leaks by turning the unit on and applying a dilute detergent and water 7 9 Filter Bowl Replacement solution at the bowl housing seal and at the hose Verify that you have the latest filter bowl fittings which were reconnected If no leaks are assembly as shown below If you do not have found the unit is ready to return to service If this filter bowl assembly you will need to replace leaks are located repair the leak and recheck this assembly with item 5 from the Three Year for additional leaks Leaking fittings must be Recommended Dehydrator Spare Parts list If repaired or the unit will not
21. ource of dry air 45 C 50 F dew point or drier for pressurizing large antenna and transmission line systems Output pressure is controlled nominal 13 79 to 41 37 kPa 2 to 6 psig Air pressure is generated by an air compressor and the air is dried by permeable separation of the water vapor through a membrane cartridge eliminating the use of timer controlled heaters solenoid valves desiccant towers and associated wiring providing greater reliability Internal alarm circuitry provides a High Humidity Power Fail user setable excess run alarm and a factory set Low Pressure alarm 1 3 Introducing the DryLine Dehydrator Section 2 Installation 2 1 2 2 2 3 MT Series DryLine Dehydrator User Manual Unpack Dehydrator and Inspect for Shipping Damage Carefully remove packing material Check the dehydrator for shipping damage such as dents or loose parts Open the dehydrator front door and check for loose wires hoses or components Refer to the wiring schematic Figure 5 and 13 for proper placement If there is damage or if there are any other problems contact CommScope Technical Service Telephone numbers are listed in Figure 1 Filter Bowls Customer Support Section 9 If everything looks correct close the dehydrator front door Perform Pre System Startup Test Make sure power switch is in the OFF position Plug the dehydrator into a proper electrical outlet Proper in
22. put power is defined in the specifications Section 8 Do not connect the air lines on the unit at this time Turn the dehydrator on The pressure gauge on the door should read 0 psig As the unit warms up check the filter bowls See Figures 1 to ensure condensate is being released and not building up in each bowl Check the pressure gauge at the top or bottom of the membrane tube Verify it is at 90 psig 5psig Adjust the valve if necessary to show 90 psig Check the air output port at the top of the unit to make sure that air is flowing out If problems exist review troubleshooting procedures in Section 6 or consult CommScope Technical Service If these items check out turn power switch off unplug the unit and close the dehydrator front door Placing the Dehydrator The DryLine MT Series dehydrator is designed as a floor standing unit The unit is shipped with the power cord and air lines placed through the top of the unit MT Series DryLine Dehydrator User Manual 2 4 Install Polyethylene Tubing Lines Output lines 4 with individual valves Pressure sense line Remote Sense 2 5 Connection Procedure Connect the Transmission Line Tubing Insert the tubing runs from the transmission lines into the fittings in the top panel marked Outlet Connect the Remote Sense Line Tubing Insert a single tubing run from the transmission line into the fitting in the top panel marked Remote Sense Insta
23. r direct connections to a halo grounding system where applicable Connect using a No 6 copper stranded wire terminated at the ground stud with a proper ring tongue crimp on terminal Plug and Outlet Configurations Make sure that the units are connected to an outlet having the same configuration as the plug Do not modify the plug If it will not fit the outlet have a proper outlet installed by a qualified electrician Do not use an adapter If the product must be reconnected for use on a different type of electric circuit qualified service personnel should make the reconnection 10 Test the Unit Turn on the dehydrator The solenoids on the filter bowls should vent then close after approximately 3 seconds The dryer tube should read 90 5 psig The front panel gauge should indicate O psig The power LED and compressor Run LED should be illuminated The Low Pressure alarm will clear when the system is above 0 5 psig The High Humidity alarm should clear after a few minutes of running the unit When the above alarm conditions are met the dehydrator is ready to be placed into service The Excess Run alarm condition may exist due to a continous run cycle because the unit is not connected to the system Connect to Dry Air Cable System Caution Check the system pressure rating before connecting the dehydrator to the transmission line system If the rating is below 5 Ib in2 35 kPa contact CommScope Customer Service To insu
24. r loose interface points and holes in the transmission lines Correct any conditions that exist where pressure is leaking If the condition persists call CommScope Technical Service for assistance Check the dehydrator for build up of water in the filter If there is a build up of water in the water filter bowl use a soapy water solution to check for leaky fittings in the dehydrator If no leak can be found the problem is probably with the compressor Rebuild kits for each dehydrator are specified in section 7 The unit may also be returned to CommScope for repair Contact CommScope Technical Service for further assistance Note Once the problem has been corrected run the dehydrator off line until the humidity alarm clears If the membrane dryer has been saturated this process can take up to 48 hours of continuous running Check the programming of the excess run time display as shown in section 3 2 Check system for leaks See troubleshooting section Low pressure alarm on LED illuminated Check the ac voltage supply to the unit 20 MT Series DryLine Dehydrator User Manual Section 7 Parts Replacement and Dehydrator Overhaul CommScope dehydrators have been designed to Notice To provide continuous reliable operation provide many years of trouble free service and will the dehydrator must be overhauled every 6000 require minimal maintenance The LCD display panel hours of compressor operation The dehydrator contai
25. re that all internal dehydrator components are properly dried operate the DryLine MT Series unit for at least 45 minutes prior to connecting the output air line to the primary waveguide If the transmission lines have not been purged take the following steps to dry the system otherwise proceed to Section 3 Operation Purging Procedure 1 Determine total volume of the pressurized dry air cable system to be connected to the dehydrator Refer to page 12 Times to Purge and Pressurize 2 Open the opposite end of the cable system from the dehydrator for purging 3 Operate the dehydrator after the initial 45 minute drying period to deliver dry air into the pressurized air system until a total of 3 volumes have been pumped through the entire system A Check the humidity in the system using the humidity alarm if so equipped Perform this check after the far end of the system has been closed and the system has been stabilized for at least 5 hours 9 Check cycle timing Compressor on time should be no more than 10 of off time for maximum life If not MT Series DryLine Dehydrator User Manual System may not be properly sized Or Leaks may exist Check using Snoop or detergent water Or Normal connector leakage may be greater than expected During the off cycle the dehydrator is designed to allow a small amount of system air to b
26. 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 while repairs are being performed If you feel you need a loaner please contact us at 817 864 4150 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 MT Series DryLine Dehydrator User Manual 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 XXXXXXX 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 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 pro
27. rify there is no water build up in the filter bowls If there is water refer to the troubleshooting procedures in Section 6 for corrective action Replacement of the water filter and coalescent filter and their associated elements and bowls is covered in the parts replacement section of this manual Refer to Section 7 Electrical Connections Check for loose or corroded electrical connections A loose terminal can cause erratic operation and unnecessary downtime Check the screw on and push on terminals and tighten as required Ground Wire Check for proper ground wire connection to protect operations personnel A green ground wire is attached between the power terminal strip and the dehydrator chassis The ground lug screw or stud nut must be tight to provide a proper ground Hour Meter Check the run time meter to determine the duty cycle of the dehydrator If the dehydrator has been running more than 10 of the time check for system leaks Also check to see if it is time to schedule the 6000 hour maintenance Replace Compressor Air Filter The air filter protects the compressor from contamination and extends the service life of the compressor It is made of open cell material and should be replaced every six months or more often if the dehydrator is located in a dusty environment Carefully pull off the filter cover and remove the filter element Install the new filter element and replace the filter cover being certain
28. s to 3 kPa 1 Ib in2 and stops when the pressure reaches 28 kPa 4 Ib in2 That is the recommended pressure range for most antenna and transmission line components which have a rating of 35 kPa 5 Ib in2 Some system components however have lower pressure ratings If this is the case please contact CommScope Customer service Hour Meter Display This shows the total run time for the compressor since it left the factory The total run time should be monitored to determine the duty cycle of the dehydrator and for compressor maintenance scheduling No adjustments are necessary and none are provided Alarm Conditions Alarm conditions except Excess Run are factory set and cannot be altered Alarm contacts are included in the unit and wiring terminals are located on the inside of the door When an alarm condition exists the normally open contacts are closed thereby activating a remote alarm not included Also the alarm condition will be displayed on the series of LEDs on the front panel 14 Programming information Excess Run Time Alarm Setting JP1 The dehydrator will signal an alarm condition when the dehydrator operates longer than the selected in minutes The alarm indicates that there is either a substantial leak in the system or that the dehydrator is not supplying a sufficient volume of dry air The initial factory setting is 120 minutes The alarm should be set for a time about twice the anticipated normal runni
29. tall the replacement alarm board by reversing the above process 7 14 Replace Pressure Switch With the front door open on the dehydrator disconnect the wiring from the pressure switch carefully noting the location of each lead Remove the hardware that secure the the switch to the panel Install the replacement switch by reversing the above procedure 24 MT Series DryLine Dehydrator User Manual This page has been left blank on purpose 25 MT Series DryLine Dehydrator User Manual Section 8 Specifications Specifications for Dehydrator MT Series Specifications for Dehydrator MT Series Output Pressure Range nominal 13 79 to 41 37 kPa 2 to 6 psig MT1000 28 SLPM 1 0 SCFM Output Flow Rate nominal MT2000 56 SLPM 2 0 SCFM better than Output Dow Point 45 C 50 F at 92 RH at 40 C 104 F 6 7 to Set point Range 201 mbar 0 1 to 0 3 Ib in2 240Vac 50 60Hz 0 03 Amps Standby 11 5 Amps Running 40 amps starting Electrical connections require separate circuits when multiple dehydrators are installed Output Air Connector 3 8 poly tube compression fitting Remote Sensing input 3 8 poly tube compression fitting height 114 94 45 25 width 41 91 16 5 depth 44 45 17 5 MT1000 58 97 130 MT2000 58 97 130 Over pressure limit internal 7 psig Pop off Valve Input Power Dimensions cm in Weight net nominal kg Ib Optional items System pop off valve
30. that it is completely seated To replace the filter housing unscrew the housing from the compressor head and replace with new filter housing MT Series DryLine Dehydrator User Manual Section 6 In Case of Difficulty If you experience difficulty with your dehydrator use the troubleshooting procedures described on the next page Perform the tests inspections and corrective actions corresponding to the problem in the order listed See System configuration diagram Basic or System configuration diagram Multi Line for piping connections and Door Schematic or Chassis Schematic for wiring Section 7 lists replaceable parts CommScope Technical Service If you cannot correct the problem or if there are other difficulties contact the CommScope Technical Service nearest you Telephone numbers are listed on Customer Support Section 9 Note Run the dehydrator to dry it out prior to connecting it to the system Run it until the high humidity alarm clears if so equipped The drying process should take about 45 minutes if the membrane dryer was not saturated If the membrane dryer was saturated drying may take up to 48 hours Caution High voltage exists inside the unit Disconnect the unit whenever performing troubleshooting operations 19 MT Series DryLine Dehydrator User Manual po M Troubl
31. uld be informed prior to the units being turned off It will also be necessary to close off the transmission lines connected to the dehydrator to avoid losing pressure in these lines Once these steps have been taken turn off the power to the unit disconnect the alarm connections and unplug the unit The units can now be moved to a suitable work area for parts replacement Door and Panel Removal Caution Disconnect electrical power from the unit before removing the doors Carefully loosen the screws in the front doors and swing them open Loosen the screws in the side panels and remove the side panels by lifting them away from the unit Replace Power Switch Disconnect the four terminals from the power switch carefully noting the location of each wire Compress the retainers on the switch and push the switch out the front of the chassis It may be necessary to rock the switch from top to bottom to remove it Replace switch by snapping it in place Reconnect the four wires Replace Circuit Breaker The circuit breaker is located on the upper front door of the dehydrator Disconnect the two terminals from the circuit breaker carefully noting the location of each wire 22 To remove the circuit breaker compress the retainers on both sides and push it through the front panel opening Replace circuit breaker snapping it in place Reconnect the two wires Replace Time Delay Module The Time Delay Mdule is located on th
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