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®
PT1250 Series
PT1250DC Series
PT1253R
PT1250 EX/AMS
PT1260EX Series
PT1280 Series
Heavy-Duty Pan/Tilts
Maintenance/
Service Manual
C373SM-A (8/01)
Pelco • 3500 Pelco Way, Clovis • CA 93612-5699 USA • www.pelco.com
In North America and Canada: Tel (800) 289-9100 or FAX (800) 289-9150
International Customers: Tel +1 (559) 292-1981 or FAX +1 (559) 348-1120
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CONTENTS Section Page IMPORTANT SAFEGUARDS AND WARNINGS................................................................4 DESCRIPTION ...................................................................................................................5 MODELS ....................................................................................................................5 OPTIONS ...................................................................................................................6
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LIST OF TABLES Table Page A PT1250 Series Mechanical Parts List ...............................................................10 B PT1250 Series Hardware List ...........................................................................13 C PT1250DC Series Parts List .............................................................................15 D PT1253R Mechanical Parts List ........................................................................17 E PT1253R Hardware List ......................
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IMPORTANT SAFEGUARDS AND WARNINGS Prior to installation and use of this product, the following WARNINGS should be observed. 1. Installation and servicing should only be done by qualified service personnel and conform to all local codes. 2. Unless the unit is specifically marked as a NEMA Type 3, 3R, 3S, 4, 4X, 6 or 6P enclosure, it is designed for indoor use only and it must not be installed where exposed to rain and moisture. 3. Only use replacement parts recommended by Pelco. 4. The installati
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DESCRIPTION All heavy duty pan/tilts can operate with loads up to 100 pounds (45.4 kg). Rugged high- torque motors with adjustable worm-gear final drives ensure long operational life and drift- free operation. All models are manufactured from cast and/or plate aluminum with all internal parts corrosion-protected steel or aluminum. The PT1250 Series and PT1280 Series are capable of auto/random scan operation with the addition of the Pelco solid-state auto/random scan joystick control. The PT1253R
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PT1250DC/PP Same as PT1250DC except supplied with position feedback modification. Requires preset control or control with AZL option (panel readout meters) PT1250DC/RAD Same as PT1250DC except supplied with radiation resistant wiring and 6 white epoxy paint. Low level radiation resistant up to 10 rads PT1253R PT1253R Heavy duty, indoor/outdoor pan/tilt, 120 VAC. Equipped with variable frame scan PT1250EX/AMS PT1250EX/AMS Heavy duty, indoor/outdoor pan/tilt, 120 VAC, Weather and dust-proof constr
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MAINTENANCE Inspect the pan/tilt unit every six months to ensure trouble-free operation and an extended product life. Harsh environments and/or continuous motion applications may require more frequent maintenance. Please read all of the instructions that follow before servicing the pan/tilt. To begin, remove the three screws on the front of the pan/tilt housing and lift the cover to gain access to the pan and tilt motor assemblies. TIGHTENING DRIVE CHAINS Check the pan and tilt drive chains for
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RESETTING POTENTIOMETERS IMPORTANT: Be very Models with Preset Positioning (PP) careful when resetting po- Models with preset positioning (PP) use potentiometer switches that are factory set to the tentiometer switches. Be full range of pan and tilt travel. Under normal operating conditions and at routine service sure that the pan/tilt has intervals they do not need adjusting. been centered between maximum pan and tilt travel, Should your pan/tilt require any work on the drive mechanism other t
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EXPLODED ASSEMBLY DIAGRAMS Figure 3. PT1250 Series Exploded Assembly Diagram (Mechanical Parts) Pelco Manual C373SM-A (8/01) 9
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Table A. PT1250 Series Mechanical Parts List Item Qty Description Part Number 11 Gasket 105010010 21 Pan spindle nut 10504017COMP 31 Thrust cap (except WT, RAD models) 10504076COMP 1 Thrust cap (WT and RAD only) 10504076WCOMP 41 Tilt gear 10504084COMP 51 Pan gear 10504089COMP 62 Bearing 10506009 72 Bearing 10506010 82 Grommet 125010000 94 Retainer clip 125010001 10 1 Pan chain assembly (except 220, FG, FGP models) 12501010COMP 1 Pan chain assembly (FG and FGP only) 12501020COMP 1 Pan chain asse
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Table A. PT1250 Series Mechanical Parts List (Continued) Item Qty Description Part Number 43 1 Tilt sprocket (except 220, FG models) 12504127COMP 1 Tilt sprocket (220 only) 12504227COMP 1 Tilt sprocket (FG only) 12504126COMP 44 2 Motor, 120 VAC (except 220 model) 12508110 2 Motor, 230 VAC (220 only) 12508115 45 2 Gear head (except 220 model) 12508111 2 Gear head (220 only) 12508114 46 1 Bottom plate 12504112ACOMP 47 1 Side plate, tilt side (except WT, RAD models) 12504115COMP 1 Side plate, tilt
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Figure 4. PT1250 Series Exploded Assembly Diagram (Hardware) 12 Pelco Manual C373SM-A (8/01)
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Table B. PT1250 Series Hardware List Item Qty Description Part Number A4 Screw, 1/4-20 x 1/2" ZH1/420X.500CH B5 Allen bolt, 1/4-20 x 5/8" ZH1/420X.625CS C4 Bolt, 1/4-20 x 3/4" ZH1/420X.750CH D6 Screw 1/4-20 x 1", flat-head, Phillips ZH1/420X1.00SFS E9 Split lock washer, 1/4" ZH1/4LWSSL F4 Set screw, 10-32 x 3/16" (except PP, WT models) ZH10-32X.187S 6 Set screw, 10-32 x 3/16" (PP and WT only) ZH10-32X.187S G8 Screw, 10-32 x 2 1/4", pan head, Phillips ZH10-32X2.25SPS H8 Nut, 10-32 ZH10-32NUTSH I
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Figure 5. PT1250DC Series Exploded Assembly Diagram 14 Pelco Manual C373SM-A (8/01)
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Table C. PT1250DC Series Parts List Item Qty Description Part Number 11 Gasket connector 105010010 21 Pin tapper #5 x 2" 105010017 31 Nut, pan spindle 10504017COMP 41 Thrust cap 10504076COMP 51 Gear tilt 10504084COMP 62 Thrust collar 10504085COMP 71 Gear, pan 10504089COMP 8– (Not used) 92 Bearing 10506009 10 2 Bearing 10506010 11 2 Mount limit pin 125010000 12 4 Clip retainer 125010001 13 1 Chain assembly, pan motor 12501000COMP 14 1 Chain assembly, tilt motor 12501001COMP 15 2 PC board assembl
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35 31 22 52 33 32 34 49 48 3 20 17 4 13 16 20 7 20 11 43 17 13 14 19 16 12 45 40 20 44 12 18 5 18 20 41 10 15 30 42 45 2 14 44 18 6 38 29 39 18 46 19 20 9 15 36 37 25 9 8 8 27 26 25 24 9 23 47 9 7 28 6 54 21 1 50 01172 Figure 6. PT1253R Exploded Assembly (Mechanical Parts) 16 Pelco Manual C373SM-A (8/01)
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Table D. PT1253R Mechanical Parts List Item Qty Description Part Number 11 Gasket, connector 105010010 21 Nut, pan spindle black no. 8 10504017COMP 31 Thrust cap 10504076COMP 41 Gear, tilt 10504084COMP 51 Gear, pan 10504089COMP 62 Bearing 6208-ZZ 10506009 72 Bearing FB1416-6 10506010 82 Mount grommet LOR00 125010000 94 Clip retainer 125010001 10 1 Chain, assy pan 12501010COMP 11 1 Chain, assy tilt 12501011COMP 12 2 Key, Woodruff #3 alloy 105010015 13 2 Gear, worm pan 105012010 14 2 Pan shaft 10
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Z B E BB AA Y J BB CC Z N M E F B H I K F F C N G T F H DD A I K E M M T E U C A W L G P L S P U T V U D S R 01173 Figure 7. PT1253R Exploded Assembly (Hardware) 18 Pelco Manual C373SM-A (8/01)
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Table E. PT1253R Hardware List Item Qty Description Part Number A4 Screw, 1/4-20 x .500 soc ZH1/420X.500CS B5 Bolt, 1/4-20 x 5/8" sock SS ZH1/420X.625CS C4 Bolt, 1/4-20 x 3/4" hex SS ZH1/420X.750CH D6 Screw, 1/4-20 x 1" flat phil SS ZH1/420X1.00SFS E9 Washer, split lock 1/4" SS ZH1/4LWSSL F4 Set screw, 10-32 x 3/16" soc knur blk ZH10-32X.187S G8 Screw, 10-32 x 2 1/4" phil pan SS ZH10-32X2.25SPS H8 Nut, hex 10-32 SS ZH10-32NUTSH I8 Washer, split lock #10 SS ZH10LWSSL J2 Washer, flat #8 SS ZH188X
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20 Pelco Manual C373SM-A (8/01) Figure 8. PT1250EX/AMS Exploded Assembly Diagram
