PMT200A Series Dehydrator User Manual
Contents
1. 274 DE wm a EE hee EUER I e res Ab rm Tu EN en a 4 n Le ON OFF Switch Toggles unit condition ON and OFF gt m ie Mode Switch Toggles between modes PMT200A SERIES DEHYDRATOR USER MANUAL 2 3 Installing the Dehydrator 2 3 1 Wall Mounting See drill template 18 00526 001 200 WALL DRIL TEMPLATE 2 4 Power Connections Confirm your dehydrator electrical input matches the available power 115 VAC 230 VAC 50 60 Hz auto switching 200 82015 200 82315 2 4 1 units be connected into standard 15 Amp power receptacle of the proper voltage Make sure the power circuit is properly grounded Two power cords are supplied one 115 VAC American and one 230 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 Test the Dehydrator Turn the dehydrator ON and check the output ports on top of the unit to make sure air is flowing To do this make sure that corresponding shut off valve is open and the plugs are removed from the por2. is received the Andrew staff will work with you to pinpoint the possible cause of trouble If the pressurization equipment is suspect they will i 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 fax a Return Goods Authorization Sheet to you 6 3 Return Goods Instructions After you have contacted Andrew and received a Return Goods Authorization Number RGN you will need to take the following steps to send the faulty unit to a Repair Center make a copy of the Return Goods Authorization Sheet that was faxed to you write a brief description of the trouble you are encountering and attach this to the copy of the sheet pack the unit with at least 4 inches of protec tive packaging on all sides enclose the authorization sheet and trouble description within the box mark the outside of the box with the RGN return the box to the Repair Center address listed on the authorization sheet If you have saved the original packaging that came with the unit use it to return the dehydrator for repair 17 If a loaner unit of the same type was supplied by Andrew use the loaner unit box to return the original dehydrator 6 4 Repair Center Process The Andrew Dehydrator Repair Center will receive your unit and inspect it for any transport damage The uni
3. of 0 2 SCFM In addition to supplying the output air the reservoir tank also provides the dry air for the feedback loop The feedback loop is necessary to maintain the dryness of the membrane cartridge During normal operation the bleed air in the feedback loop will cause the pressure to slowly drop in the internal reservoir tank and the PMT200A compressor will cycle automatically These cycles will take place regardless of the system volume or condition of the transmission line the dehydrator is connected to The rate of these cycles however will vary When connected to a very tight system or the output is capped the dehydrator will cycle approximately every 60 minutes and maintain 5 0 psi system pressure when open to atmosphere the dehydrator will cycle approximately every 3 minutes while providing close to 0 2 SCFM of dry air A system that leaks will have a cycle time somewhere in between depending on the severity of the leaks The display will also reflect a pressure between 0 and 5 0 psi while the output flow is between 0 and 0 2 SCFM The pressure sensor senses pressure beyond the flow control orifice and will show the actual pressure in the transmission lines or to the distribution manifold During the initial pressurization of the transmission line the dehydrator will cycle every 2 to 4 minutes with the system at 0 psi pressure As the dehydrator pressurizes the system the cycle times will increase and the pressure wi
4. 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 Overhaul Kit PMT200A KIT OVRHL 6 1 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 Filter Element Replacement Kit PMT200A KIT ELMNT If the steps in the manual do not identify and remedy the problem then contact an Andrew Customer Service Center for 24 hour telephone assistance Record the Model Number e g PMT200A 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 in North America Filter Bowl Assemble Replacement Kit PMT200A KIT FLTRS 1 800 255 1479 in Europe 44 1592 782612 any Location to USA 708 349 3300 Filter Bowl Assemble and Dryer Tube Replacement Kit PMT200A KIT DRYER Solenoid Replacement Kit PMT200A KIT SOLND 16 PMT200A SERIES DEHYDRATOR USER MANUAL If you find it easier to describe your troubles by Fax then the following numbers are also available in North America 1 800 349 5444 Fax only in Europe 44 1592 782380 Fax only any Location to USA 708 349 5410 Fax only 6 2 Initial Steps by Andrew When your call or fax communication
5. there is excessive water refer to the troubleshooting section Replacement of the filter elements in the water filter and coalescing filter is covered in the overhaul section of this manual PMT200A SERIES DEHYDRATOR USER MANUAL 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 ground wire Check that an electrical safety ground is installed on the stud on top of the dehydrator This connection point is adjacent the power input connector lt is intended to be customer installed in the field Check the hour meter 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 2096 of its installed time check the systems for leaks Also check the time on the meter to determine if it is time to perform the 6000 hour overhaul 9 5 Parts Replacement Dehydrator Overhaul Andrew 2 Dehydrators are designed to give many years of trouble free service and require very minimal maintenance The dehydrator contains as a standard feature an hour meter that records compressor run hours To ensure continu
6. 60 cubic feet or 1700 liters in volume antenna and transmission line systems The dehydrators produce 50 F 45 C dewpoint dry air at an output rate of 0 2 cubic feet 1 4 liters per minute Each dehydrator consists of an electrically driven air compressor a membrane dryer assembly an automatic transmission line pressure sensing system and alarm outputs housed in a rigid metal chassis It is designed to mount directly to the 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 all filter elements are accessible from the top or front of the unit The PMT200A maintains transmission line pressures at 5 0 Ib in 34 kPa It is intended for standard microwave antenna applications and any other transmission line pressurization requirement that supports a medium pressure limit 1 3 Operation PMT200A Theory of operation The 2 series of DryLine dehydrators while similar in moisture removal technology operates differently than some of the DryLine series of dehydrators In order to provide a constant supply of dry air to small air volume systems and to maintain an acceptable dryness level in the product air stream a high pressure reservoir tank is utilized This reservoir tank is connected to a pressure regulator and orifice to yield a fixed output pressure of 5 0 psi and a nominal flow rate
7. PMI200A SERIES USER MANUAL Bulletin AEO1B A0523 001 Rev 18 NOV 05 SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 PMT200A SERIES DEHYDRATOR USER MANUAL TABLE OF CONTENTS General Information Introduction Description Operation Alarm Multiple Alarm Option Specifications Installation Unpacking and Inspection Controls and Displays Installing the Dehydrator Wall Mounting Power Connections AC Power Connecting Low Pressure Alarm Output Connecting Dehydrator to the Transmission Line Purging the Transmission Line Maintenance Regular Maintenance Preventive Maintenance Dehydrator Filter Element Replacement Annual Inspection Parts Replacement and Dehydrator Overhaul Service Restoration Notes Troubleshooting Problem Solution Table Schematic Diagram with All Option 82315 Schematic Diagram with Low Pressure 82015 Replacement Parts Customer Service Warranty gt CO CO CO CON NNN N OD CO CO 10 12 13 13 14 15 16 16 19 PMT200A SERIES DEHYDRATOR USER MANUAL 1 1 Introduction This manual contains the information you need to install operate and maintain your PMT200A Series DryLine amp dehydrator Please take the time to read this manual before attempting to operate or service the unit 1 2 Description 200 Series dehydrators provide dry air for pressurizing small up to
8. ator output port Tighten securely with a 9 16 wrench Be careful not to 2 Wait 15 minutes while the air absorbs over tighten Connect the other end of the polytube to moisture in the system then disconnect the transmission line the dehydrator from the transmission line and allow the air to vent Four air outputs are provided with individual shut off valves on the unit Make sure that the valve is in the 3 Repeat steps 1 and 2 twelve times to open position for each transmission line connection If purge the system one of the output connections is not used close the valve and leave the port capped PMT200A SERIES DEHYDRATOR USER MANUAL 3 0 Maintenance PMT200A Dehyarator 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 1 Regular Maintenance PMT200A Dehydrator will perform at an optimum if itis routinely checked for correct performance This checking generally consists of an annual inspection of the condition of the air intake filter and an overhaul after every 6000 hours of compressor operation Performance of these measures is sufficient to ensure continued reliable operation 3 2 Preventive Maintenance The annual maintenance of a PMT200A consists of a preventative maintenance inspection o
9. f the dehydrator and cleaning or replacement of the foam air intake filter These tasks can easily be performed in the field with the unit connected to the transmission line system and with only the front access door opened for maintenance 3 3 Dehydrator Filter Element Replacement Clean replace the air intake filter The air intake filter protects the compressor from contamination and dust Periodic cleaning replacement extents the life of the compressor To gain access to the element push in on the cover and rotate the housing approximately 1 4 turn CCW The filter is made of a fibrous material It should be replaced once a year or more frequently if the operating environment is very dusty CAUTION Do not apply oil or other chemicals to the filter element Make sure the element is seated completely in the housing and then replace the cover If a new element is used discard the old element 3 4 Annual Inspection Warning Electrical Hazard Unplug power cord before servicing unit Inspection includes checking for loose or damage hoses fittings and electrical connections Open the top panel or front door and verify that there is no water build up in the two filter bowls located inside the front cover of the dehydrator There may be some droplets of water in the filter bowels the lower portion of each bowl but there should be only a small amount of liquid in either bowl 1 ien If
10. ft blank 18 PMT200A SERIES DEHYDRATOR USER MANUAL TANDREW Andrew Corporation Small and Medium Capacity Dehydrator and Line Monitor System Three Year Warranty Seller warrants that Andrew MTOSO MT XT 300 50 200 ODPMT200 and 40525B series number Dehydrator and any Line Monitor System is transferred rightfully and with good title that it is free from any lawful security interest or other lien or encumbrance unknown to Buyer and that for a period of thirty six 36 months from the date of shipment or 3000 hours of actual run time whichever shall occur first such equipment will be free from defects in material and workmanship which arise under proper and normal use and service Buyer s exclusive remedy hereunder is limited to Seller s correction either at its plant or at such other place as may be agreed upon between Seller and Buyer of any such defects by repair or replacement with either a new unit or a factory reconditioned unit at no cost to the Buyer provided that the cost of any transportation in connection with the return of the equipment for the purpose of repair or replacement shall be borne by Buyer The provisions of this warranty shall be applicable with respect to any equipment which Seller repairs or replaces pursuant to it Expressly excluded from the terms of this warranty are defects caused by i faulty installation ii lack of proper inspection or maintenance ili and usage not in acco
11. ll rise until the dehydrator output is balanced with the system leak at which point the cycle times will stabilize 1 4 Alarms The PMT200A offers Low Pressure Excess Run and Power Fail alarms as a standard feature Alarm conditions are indicated on the display Alarms are output as a common summary alarm with a from C dry PMT200A SERIES DEHYDRATOR USER MANUAL contact The alarm is set for continuity on alarm 1 4 4 Multiple Alarm Option This optional assembly is designed to provide the additional High Humidity alarm to Andrew Dehyadrators All alarms are Form C dry contacts and are factory set for continuity at alarm mains power fail alarm opens at alarm This optional assembly will also indicate discrete alarms on the display and provide individual contacts and connections for discrete alarms The external alarm monitoring system supplied by others is connected to the terminal strip located on top of the cabinet A small slotted screwdriver is necessary to make the connections The connection to the alarm strip is as follows refer to Figure 1 for correct locations and colors of the wires on the terminal strip Figure 1 Term Function Wire Color 1 Power Fail Com Black 2 Power Fail Alarm Hed 3 Humidity Com Green 4 Humidity Alarm Brown 5 Excess Run Com Blue 6 Excess Run Alarm White 7 Low Press Com Grey 8 Low Press Alarm Orange Alarm Definitions Power Fail High Humidity Excess Run Lo
12. onnect the dehydrator dry air output from the waveguide system during the overhaul PMT200A SERIES DEHYDRATOR USER MANUAL Remove the compressor for overhaul To remove the compressor open the upper front panel of the unit 1 Disconnect compressor wiring from control board 2 Disconnect tubing from outlet of compressor S Disconnect drain tubing from outlet of solenoid 4 Remove screws holding compressor pan to chassis and remove pan compressor assy from chassis Follow the instructions included in the compressor overhaul kit When the overhaul is complete reinstall 3 6 Service Restoration RECOMMENDATION If the dehydrator overhaul process has taken more than a few hours it is recommended that the unit be run for one hour into the room to purge the membrane dryer and tank of any acquired moisture before reconnecting to the transmission line system 11 PMT200A SERIES DEHYDRATOR USER MANUAL Notes 12 PMT200A SERIES DEHYDRATOR USER MANUAL 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 Dehydrator display does not light unit does not run Low pressure alarm activated Compressor does not turn Filter bowls show excessive water 13 If the display light falls to light make sure
13. ous and reliable operation the dehydrator must be overhauled every 6000 hours of compressor operation The kit listed below contains all of the necessary parts to perform this overhaul The dehydrator overhaul kit includes parts to overhaul the compressor and critical components in the dehydrator that often become worn over time 10 IN CASE OF DIFFICULTY the dehydrator is not operating refer to Section 2 on Installation and Section 4 on Troubleshooting the unit Tools The following tools are used in the maintenance and overhaul procedures Adjustable open end wrench Allen wrench 5 32 2 Phillips screwdriver omall flat blade screw driver Overhaul Procedure When the PMT200A compressor run time reaches 6000 hours or a multiple of 6000 hours it is time to replace certain items in the compressor and the air path of the dehydrator These include the piston cups piston seals and head gaskets of the compressor the filter elements in the water and coalescing filters and the tube section connecting the compressor output to the water filter input Unit Shutdown and Removal In order to perform an overhaul on the PMT200A the unit must be turned off and removed from service As this is being done the low pressure alarm may active 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 disc
14. pens Mo 6l ti 13 Timer Connection P3 Compressor Voltage Timer Set 120v 4 Aux A B 1 FUSE Press Switch 5 amp 250V PS1 Figure 2 Output Pressure Output Connector 3 8 polytube Constant 5 0 PSI 5 compression Output capacity 12 0 SCFH 340liters h Dimensions 18 Wx17 5 7 total approx 0 2 SCFM 457mm x 444 5 W 5 6 liters m x 178mm D Output Dew Point 50 F 45 C or better Weight 36 1 2 lbs 16 55 kg Operating Temperature Range Low Pressure Alarm Electrical Input 34 to 4104 F 1 to 40 C 1 0 Ib in 6 9 kPa 115 230 VAC 50 60 Hz auto switching Optional Alarms High Humidity Alarm Set Point Excess Run Alarm Set Point Power Fail Alarm 7 5 RH factory set 10 minutes factory set loss of input power PMT200A SERIES DEHYDRATOR USER MANUAL 2 1 Unpacking and Inspection Open carton RENE dnd Mode 1 Displays pressure and total run hours Remove the top piece of corrugated packing Carefully remove the installation accessories and manual and dehydrator Check the dehydrator for shipping damage such as dents or loose parts 2 2 Controls and Displays Familiarize yourself with the controls and displays prior to installing or testing the dehydrator Mode 2 Displays pressure and total run hours flashes current condition Mode 3 Displays last ON and last OFF times rre E mm Eu
15. rdance with published ratings specifications or instructions The provisions of this warranty shall be applicable with respect to any equipment Seller repairs or replaces pursuant to it SELLER MAKES NO WARRANTY EXPRESS OR IMPLIED OTHER THAN AS SPECIFICALLY STATED ABOVE EXPRESSLY EXCLUDED ARE ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PURPOSE THE FOREGOING SHALL CONSTITUTE ALL OF SELLER S LIABILITY EXCEPT AS TO PATENT INFRINGEMENT WITH RESPECT TO THE EQUIPMENT IN NO EVENT SHALL SELLER BE LIABLE FOR SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES INSTALLATION COSTS LOST REVENUE OR PROFITS OR ANY OTHER COSTS OF ANY NATURE AS A RESULT OF THE USE OF EQUIPMENT MANUFACTURED BY THE SELLER WHETHER USED IN ACCORDANCE WITH INSTRUCTIONS OR NOT UNDER NO CIRCUMSTANCES SHALL SELLER S LIABILITY TO BUYER EXCEED THE ACTUAL SALES PRICE OF THE EQUIPMENT PROVIDED HEREUNDER No representative is authorized to assume for Seller any other liability in connection with the equipment 19 PMT200A SERIES DEHYDRATOR USER MANUAL This page was left blank 20
16. t will then be analyzed for troubles using the description you have supplied and the specialized experience the Center staff have with dehydrators If the unit is in warranty repairs are made at no charge and the unit will be returned to you by the same mode of transport as it was received If the unit is in warranty but no problems are found the unit will be thoroughly tested before being returned to you A nominal inspection fee will be charged for this service If your unit is out of warranty it will be inspected and you will be advised of the estimated cost of repairs before the Center proceeds with any work You may elect to scrap the unit or accept the estimated charge for repairs If you elect to scrap the unit you will be billed the nominal inspection fee If you elect repairs you Will be billed for the inspection fee parts consumed and labor necessary to do the repair 6 5 Loaner Units The Andrew dehydrator Repair Centers stock a limited number of loaner dehydrator units of both current and discontinued products These units while not new are still in excellent working order Loaners are available on a first come first served basis They are issued in conjunction with the original RGN and are invoiced at a nominal price You will need to request a second RGN to return the loaner unit A credit memo is issued by the Repair Center when a loaner is returned PMT200A SERIES DEHYDRATOR USER MANUAL This page was le
17. the unit is plugged in and power outlet is operating Check to assure that the fuse is OK Turn shut off valve to the off position and observe pressure gauge The pressure gauge line should read approximately 5 0 psi and the alarm should clear If alarm does not clear remove cover and verify tubing and wiring connections are secure With dehydrator isolated from transmission line observe pressure in transmission line If pressure drops use a leak detector solution to locate leaks in the transmission line Repair leaks if possible Check the display on the controller Toggle the ON OFF switch left of the display Ensure that the drain line tubing exiting the bottom of the unit is not clogged When the compressor cycles off air and moisture should flow out of the drain line into drain pan PMT200A SERIES DEHYDRATOR USER MANUAL HOLO3NNO2 TOHINOO LN mus c 14 PMT200A SERIES DEHYDRATOR USER MANUAL oO VN PB COMPRESSOR MT CONTROL E XS OF MOV 275 VAG 3 PLAGES 1 ORN YELSTRIP PMT200A SERIES DEHYDRATOR USER MANUAL The following is a list of the replacement kits for the 6 0 Introduction Series dehydrators Andrew 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
18. ts 2 5 Connecting the Alarm Outputs To connect the alarms locate the terminal block TB 1 on top of the unit PMT200A SERIES DEHYDRATOR USER MANUAL 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 Place alarm connection wires in proper terminals and u tighten the screw on the terminal block 2 Divide the system volume by the flow rate of the dehydrator 12 CFH to The relay contacts are rated at 2 A non inductive 30 determine the number of hours needed VDC for the purge cycle Optional alarms if purchased will also be located on 3 Open the far end of the transmission this terminal see section 1 4 for terminal numbers line 2 6 Connecting Dehydrator to the Transmission 4 Operate the dehydrator for three purge Line cycles CAUTION If it is not possible to open the far end of the transmission line follow these steps Check the antenna and transmission line system pressure rating before connecting the dehydrator to the system 1 Connect the dehydrator to the transmission line and pressurize the system The system pressure should Insert one end of the 3 8 polytube feed line tubing into reach 5 0 PSI the compression fitting on the dehydr
19. w Pressure Activates open when power is removed from the dehydrator This includes turning the power off at the switch Activates when system or dehydrator output humidity rise above 7 5 relative humidity At initial installation this alarm will continue to alarm until the system has been properly purged Factory strapped run time set in accordance with the normal run time for the dehydrator application Selectable times are 10 30 120 and 240 minutes with the 10 minute selection used on the PMT200A 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 Low Pressure Mains Power Excess Run High Humidity Factory settin Normally Open N O Multiple Alarms Factory settin Where To Reset TB3 on Control Board Where To Reset Normally Low Pressure Open N O jumper JP4 on A B alarm PCB Normally Power Fail Closed N C Jumper JP3 on B C Alarm PCB Normally Jumper JP1 on Open N O Run Alarm A B PCB Normally Jumper JP2 on Open N O Alarm PCB A B PMT200A SERIES DEHYDRATOR USER MANUAL 2 J4 5 Press Switch Humidity Sensor Main Power PS2 J P2 Power Selector Input AC A B DC B C Compressor Excess Alarm Timer 10 min 1 m3 ay d i Tm
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