FN-16 and FN-16A - QuebecTrain.com
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1. it FN 16 and FN 16A Flasher Relays 3 SM 3151 should be placed directly on the surface to lubricated After the oil drop has been applied the applicator rod should be wiped against the edge of the bottle opening to remove the surplus drops The rod should then be used to distribute the drop of oil over the bearing area of the pivot screws Any excess oil on the pivots shall be removed by just touching it with a lintless cloth Care should be taken not to cover the should not threaded portion of the screws with oil C Care shall be taken that the oiled parts are protected from dust from the time of oiling until the relay is sealed 2 ARMATURE A The armature should be located centrally in the bracket 1 e the distance from the side of armature to the bracket should be the same at the front of the relay as it is at the back making allowance for the end play specified in 2B B The end play of the armature should be not less than 010 in nor more than 015 in C The pivot screws should be tightened securely to bracket and after the armature air gap is set the armature bracket should be tightened securely to the central pole piece and the hex head nuts and bolts locked with the lock washers D The air gap in either extreme position should be set as closely as possible to a parallel value of 015 in At no point should the air gap be less than 013 or no more than 017 in E The armature stop pins should2. no case shall the number of washers on the common core be less than 6 after proper timing is obtained A maximum of 29 washers may be used if required NOTE Original timing can be restored in the field when required by removing copper washers from the common core In order to maintain the minimum required flash rate it is permissible to have less than 6 washers However when it becomes necessary to remove these washers indicating wear it is recommended the relay be shopped Union Switch amp Signal recommends no less than three washers to maintain minimum flash rate 7 MINIMUM OPERATING VOLTAGE After the timing adjustments check that the relay starts to operate at the minimum operating voltage for the proper relay resistance as given in Table 1 8 CLEANING A During Adjustment and Calibration extreme care should be taken to see that no foreign matter is carried to the assembly by tools or spacers After adjustment is completed the stop pins shall be cleaned by drawing a strip of clean white bond paper between the stops and the pole faces Spacers shall not be used between the stop pins after final cleaning with paper B Before Sealing the Relay a careful inspection shall be to insure removal of all dirt and loose particles from the inside of the relay FN 16 and FN 16A Flasher Relays 8 SM 3151 TABLEI Shop Adjustment Nominal Rating Normal Minimum Flashes Flashes Per Lamp Per Lamp Per Min 45 5
3. 5 Relay Resistance Operating Operating Ohms Volts Volts Per Min 4 5 4 5 1 0 1 2 45 55 200 200 6 8 8 0 E 500 500 10 0 12 0 45 55 FN 16 and FN 16A Flasher Relays SM 3151 18 F Hex Hd 3 Cap Ses 10750036 Cad ULL UMITIOSO Sh 241 8162 RECTIFIER BOARD N83 1055 IRON CA 51055 5H 98 held on with 178 20 I HEX HD CAP SCR UJOS0013 414510411 3401 1 4 LOCK WASHER UJO47775 amp 1 1 4 HEX BESION Sn Be Tag JAM NUT UJ048003 965410839 Approx 20 of Sp 228 8094 oR entra nn ann f h 176 red Sh 23778094 the top of the Coll to a g Nas ME e 5 Pr Ro Plaja Comp 3 21258094 3 ES UN ZESTIBCIISEInE Seal per T E Adjust Ar dap per Sp 697085 Ue T2988 Sh 207 7028 Sh 3838 03 gt 171303 Sh 1510 8078 3 198421 M BRIG TE D pra7izs awe i he Sh 3298406 SA 118 428 4 EL a a A gy eee ee e 142873 un2eciar lt A a mT ities eh Po Sn 8008088 2568098 ar TAR Mza 838 Aland pe S ESE p La N S TEIEISES Seayiey x fe 50 rs ae ee x ley oF 38 0303 mar in ARE heng IN y I LH ae CW 7 7987 _pCarrhel Contac umzlaBTE i 4264185 CY TA t 7 N el zu ay 54 1387828 k x u B Ha Nee a E ra ai NN Sh 2E52 438 Flat Ha 5 Mach Serer 8 0954 BASSES INC 2443 UM4S13 OIEA FN Hd E Mach e PS NAAA fee ree eee Soon I 4 047344 WET io 30 wiosene imzesise LEI 3 975 121 0148 gae gen TEREEETER Fl w
4. UNION SWITCH amp SIGNAL 8 645 Russell Street Batesburg SC 29006 Service Manual 3151 FN 16 and FN 16A Flasher Relays Installation Operation and Maintenance April 1997 C 1 84 75 356 5 COPYRIGHT 1997 UNION SWITCH amp SIGNAL INC An Ansaldo Signal Company PRINTED IN USA SM 3151 FN 16 and FN 16A FLASHER RELAY O OO K KK oR This service manual covers information for shop repair adjustment and calibration of FN 16 and FN 16A Flasher Relays with 2N 2R now obsolete and 4N 4R contacts The FN 16A differs from the FN 16 relay only in design of the lamp contacts which necessitates the use of a heavier armature counterweight and in that the armature supporting bracket is arranged to permit the armature to be assembled to the relay without removing the contact springs from the armature The lamp contacts on the FN 16 relay were designed only for AC loads while the lamp contacts on the FN 16A relay may be used for DC as well as AC lamp load The operating coils are equipped with a rectifier for suppression of radio interference originating in the self operating contacts The operating mechanism is designed to provide minimum wear at the armature pivots and core pins thus assuring that the rate of contact operation i e flashing rate remains above the AAR minimum value without any need of adjustment for many millions of operations Original timing can readily restored in the field when required by removing one or
5. contacts to close The minimum contact opening on the one side with the contacts just making on the other side should not be less than 020 in D Operating contacts FN 16 and FN 16A relays should be adjusted with a 041 in spacer between the armature stop pin and the pole face on the left side of the relay as viewed from the front with the relay in the normal position The left operating contact should be adjusted so that light is barely perceptible between the contact points and 040 in spacer should allow the contacts to close After adjusting the left operating contact the right operating contact should be adjusted so that light is barely perceptible between the contact points with a 060 in spacer under the left stop pin A 061 in spacer should the allow the right operating contact to FN 16 and FN 16A Flasher Relays SM 3151 close This adjustment provides for 020 in contact opening with either operating contact just making E The flexible connectors should be dressed so that on the operation of the armature there is no concentrated bending at any point especially near soldered ends The flexing should be distributed as much as possible over the whole length of the connectors The flexible connectors shall not touch the cover during operation after it is installed 4 CONTACT RESISTANCE A The contact resistance shall be measured on all contacts with armature against the stop pin Resistance measured shal
6. ermissible to adjust the contacts to just open with a 025 in spacer and to close with a 024 in spacer The contact springs and their stops shall be adjusted so that the springs have an initial pressure against the stops of 16 to 25 grams on the 4N 4R contact relays and 30 to 32 grams on 2N 2R contact relays The pressure shall be measured at the tip s in a direction perpendicular to the spring at the tips The stop shall be adjusted with its end as close as possible to the contact tips without interfering with the normal movement of the contact spring The lamp contacts with wedge to flat tips shall make over at least 25 of the contact line contact The minimum contact opening with contacts just making on the other side shall not be less than 058 in FN 16 and FN 16A Flasher Relays 5 SM 3151 BRIDGING OPENING 020 MIN FIG 1 RELAY OPERATING CONTACT FOR FN 16 AND FN 16A RELAYS BRIDGING OPENING 058 MIN FIG 2 FN 16A LAMP CONTACT BRIDGING OPENING O20 MIN FIG 3 FN 16 LAMP CONTACT C FN 16 relay lamp contacts should be adjusted with a 036 in spacer under the stop pin on the opposite side of the relay That is the right hand lamp contacts are adjusted by means of a spacer at the left hand stop pin and visa versa With this spacer the upper and lower contact tips should be in line and the light should barely be perceptible between the contact points A 001 in thinner spacer should allow the
7. ith Sealing War UI 790257 si n MA M 7382 8458058 UUM 212 39 UM 286558 Dh 843 0098 Kd UN 104074 i 8518064 7 UE MY 1 12 Sia si ja Lite CA 2 i Rare i EN FIN As IR Bey q Sh S106 SE WI7E 50 085 hi SAAD SS SHO 828s ES IFES SB For Ref only pp Ph apr til ERBEN Kalon Type F Rd HA Self IN BAR Reiny Tapping Sch UISZEEOT ACH 104065 Sh 846 8065 10 FN 16 and FN 16A Flasher Relays
8. l not exceed the values given in the following table Contact surfaces Ohms Silver to silver impregnated carbons 05 Silver to silver 03 5 BACK STRAP The back strap and tops of the cores should be clean and make good magnetic contact 6 TIME PERIOD ADJUSTMENT A After the contacts have been adjusted the adjustment to obtain exact timing shall be made as follows B Apply voltage as specified in table under Timing Test Volts for the proper relay resistance to the coil terminals of the relay Connect an on time meter Simpson TS 111 or equivalent to the right hand lamp contact and while relay is operating note the time of the closed circuit Then repeat the same test on a left hand lamp contact and compare the readings If the two time periods i e armature movements are not within 20 adjust the air gap by moving the adjustable shunt by increasing or decreasing the air gap between the shunt and the central pole piece to obtain proper balance Next count the number of operations per minute Armature operations shall be counted in cycles 1 e a left and right operation as one operation Thus operations counted are the same as Flashes per lamp per minute D Adjust the timing to meet the requirements in Table under Shop Adjustments FN 16 and FN 16A Flasher Relays 7 SM 3151 If necessary copper washers on the common core may be removed or added for specified flash rate In
9. more copper washers from the common core The core and coil assembly is so constructed that timing adjustments can be made without unsealing the relay or disturbing the relay adjustments All new and re manufactured flasher relays have a minimum of six 6 copper washers to allow for this field adjustments The flash rate on the FN 16 and FN 16A is 45 55 operations per minute Prior to 1979 the flash rate was 40 45 The minimum flash was increase by AAR at that time 1 OILING OF BUSHING HOLES AND PIVOTS For oiling trunnion screw pivots and bushings in the armature we recommend Special Instrument Oil US amp S part number J 041099 When using this oil the cap is turned carefully until free and then with drawing the applicator rod the rod shall be draw slowly across the edge of the bottle opening to remove any excess oil This rod shall be returned to the bottle without coming in contact with any foreign material It shall be wiped clean each time that there is suspicion of contamination and the bottle be closed promptly within its own cap IT IS VERY IMPORTANT THAT THE OILING BE PERFORMED AS FOLLOWS A The bushing holes in the armature shall be carefully examined to check that they perfectly clean and free from dust B The bearing area of the pivot screws shall be thoroughly covered with oil by means of the rod the rod being withdrawn from the bottle in such a manner as to leave a drop of oil on it Since this non spreading oil
10. strike as flatly as possible against the pole faces F The total stroke of the armature should be checked to see that it is 106 in 002 in A convenient means for checking this is to use two separate spacers 053 in thick placed one between each stop pin and pole face and at the inside edge of the stop pin 3 CONTACT ADJUSTMENTS A Before the contacts are adjusted all screws holding contact supports and contact members should be checked for tightness A check of the lamp control contact springs with wedge and flat tips and the relay control springs with spherical faced tips should also be to see that they occupy their correct relative position as shown in figures 1 2 and 3 Spacer used FN 16 and FN 16A Flasher Relays 4 SM 3151 under the armature stop pin during contact adjustment are to be held firmly by pressure applied to the armature between the stop and the pivots so as to bring the armature as close to the pole faces as play in the pivots will permit B FN 16A relay lamp contacts shall be adjusted with a 028 in spacer under the stop pin on the opposite side of the relay That is the right handed lamp contacts are adjusted by means of a spacer on the left hand side and visa versa With this spacer the upper and lower tips shall be in line and light barely perceptible between contact points A 001 in thinner spacer shall allow the contacts to close If necessary in order to obtain flasher frequency it is p
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