®
PT480
Legacy® Series
Pan/Tilts
Maintenance/
Service Manual
C343SM (12/98)
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
CONTENTS
Section Page
1.0 GENERAL..................................................................................................3
1.1 IMPORTANT SAFEGUARDS AND WARNINGS ...............................3
2.0 DESCRIPTION ..........................................................................................4
2.1 MODELS............................................................................................4
3.0 MAINTENANCE.........................................................................................4
4.0 WIRING DIAGRAMS .................................................................................6
5.0 EXPLODED ASSEMBLY DIAGRAMS .......................................................7
6.0 WARRANTY AND RETURN INFORMATION ...........................................12
LIST OF ILLUSTRATIONS
Figure Page
1Pan and Tilt Adjustments ...................................................................5
2 PT480 Series Wiring Diagram ...........................................................6
3 Exploded Assembly Diagram of Mechanical Parts ............................7
4 Exploded Assembly Diagram of Hardware .......................................10
LIST OF TABLES
Table Page
A Mechanical Parts List (Figure 3) ........................................................8
B Hardware Parts List (Figure 4)..........................................................11
REVISION HISTORY
Manual Date Comments
C343SM 12/98 Original version.
2 Pelco Manual C343SM (12/98)
1.0 GENERAL
1.1 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. The weight of the camera/lens and enclosure shall not exceed 20 lb (9.07 kg)
– subject to specific pan/tilt unit.
3. Only use replacement parts recommended by Pelco.
4. After replacement/repair of this unit’s electrical components, conduct a resistance measurement between line and exposed parts to verify the exposed
parts have not been connected to line circuitry.
5. The installation method and materials should be capable of supporting four
times the weight of the enclosure, pan/tilt, camera and lens combination.
The product and/or manual may bear the following marks:
This symbol indicates that dangerous voltage constituting a
risk of electric shock is present within this unit.
This symbol indicates that there are important operating and
maintenance instructions in the literature accompanying this
unit.
CAUTION:
RISK OF
ELECTRIC SHOCK.
DO NOT OPEN.
TO REDUCE THE RISK OF ELECTRICAL SHOCK,
DO NOT REMOVE COVER. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
CAUTION:
Please thoroughly familiarize yourself with the information
in this manual prior to installation and operation.
Pelco Manual C343SM (12/98) 3
2.0 DESCRIPTION
The PT480 Legacy® Ser ies pan/tilt units are designed for medium-duty, indoor/
outdoor use.
Only the EH4700L Legacy® Series environmental enclosures can be mounted on
the pan/tilt units. P elco’s RediLINK™ connector makes it simple and quic k for y ou to
install an enclosure. The weight of the enclosure with camera and lens must not
exceed 20 pounds (9.07 kg).
You can easily remove the clamshell covers from the sides of the pan/tilt units to
access all internal parts without having to remove the camera enclosure. This makes
it easy to service the units and to adjust the pan and tilt limit stops.
2.1 MODELS
The PT480 Series consists of the following models:
PT480P Medium-duty, indoor/outdoor pan/tilt, 120 VAC.
PT480P/PP PT480P with preset positioning capabilities.
PT480-SL PT480P with 360° pan rotation.
PT480SL/PP PT480SL with preset positioning capabilities.
PT480-24P Medium-duty, indoor/outdoor pan/tilt, 24 VAC.
PT480-24P/PP PT480-24P with preset positioning capabilities.
PT480-24SL PT480-24P with 360° pan rotation.
PT480-24SL/PP PT480-24SL with preset positioning capabilities.
3.0 MAINTENANCE
If you need to remove the enclosure, protect the RediLINK™ connector area against
moisture, dust, dirt, etc. Failure to do so could result in a bad connection. Also,
damage to the pan and tilt unit or enclosure could occur when power is turned on.
The following servicing should be done every six months with average use.
1. Remove the PT480’s outer casing.
a. Remove the Phillips screw on each side of the pan and tilt unit.
b. Place your hands under the cover halves. Exert a strong, upward force
to release the covers from their internal latching devices.
c. Pull the cover halves away from the pan and tilt unit. Set the covers down
or hang them by the eyelets inside the covers. (The wire and hook on
which to hang the covers is not provided.)
2. Inspect the gaskets around the cover, tilt shaft, and spindle for damage.
3. Refer to Figure 1. It shows the par ts locations of the tilt assembly. Look for
similar orientations of parts when adjusting the pan assembly.
4. Check the backlash adjustment.
Backlash is the slack or binding in a pan and tilt base mount. Determine backlash by lifting the maintenance assembly, grasping the base, and wiggling it.
There should not be any play or binding between the gear (A) and worm drive
(B). Play or binding indicates a backlash problem.
• One backlash problem involves a worm and worm gear connection loose
enough to cause slipping or tight enough to cause binding.
• The second involves a too-loose or too-tight chain, usually causing symp-
toms similar to the worm and worm gear problem–slipping or binding.
4 Pelco Manual C343SM (12/98)
a. Verify that the worm drive (B) is fully seated in the worm gear (A). If it is not:
(1) Locate the worm-driven gear for either the pan or the tilt motor link-
age. Loosen the three hex screws (F) holding the worm in place,
but leave enough thread in place to hold the assembly on the mount.
(2) Using your thumbs, gently move the worm forward or pull the as-
sembly back from the worm gear to either tighten or loosen the gear
spacing to the worm gear. Move the base of the pan and tilt to chec k
the adjustment.
(3) If you get movement in the base, press a finger down in the middle
of the worm assembly. If you get no movement in the base, use
your thumb and forefinger to pull the worm assembly back until you
get movement.
(4) When the spacing is correct, tighten the hex screws. Start with the
middle screw to ensure proper spacing.
(5) Remove the screw (C) in the gear train nut (D).
(6) Tighten the gear train nut to remove any play.
(7) Line up the hole in the gear train nut with the nearest hole in the
gear train bracket (E).
(8) Replace the screw.
b. Refer to Figure 1. Adjust chain tension, if needed:
(1) Locate the pan or tilt motor on the assembly . Loosen the he x screws
(H) that hold the motor to its mounting bracket. Depending on which
motor assembly you are adjusting, there will be either three (pan) or
four (tilt). (Only two screws are shown in Figure 1.)
(2) Using a screwdriver, pry the motor down (at G) to tighten for the
correct chain tension. (You should not be able to freely move the
motor with your finger, nor should it be so tight that it will not move
at all as this usually leads to binding.)
(3) Tighten the hex screws.
c. Using a controller, you should now be able to move the PT480 without
looseness or binding. If you have any problems, contact Pelco’s Technical Support Department.
5. Lubricate the chains. Use a Teflon chain lubricant, such as TriFlon™.
6. Replace the covers.
a. Grasp one cover half in each hand and position the covers on each side
of the pan and tilt unit.
b. Bring the two cover halves together, aligning the two pins in one cover
half with the mating holes in the other cover half.
c. When the cover halves are together, press downward to f orce the cov ers
into their latches.
d. Replace the screws in the covers.
G
H
Figure 1. Pan and Tilt Adjustments
Pelco Manual C343SM (12/98) 5
4.0 WIRING DIAGRAMS
Figure 2. PT480 Series Wiring Diagram
6 Pelco Manual C343SM (12/98)
5.0 EXPLODED ASSEMBLY DIAGRAMS
24
62
23
22
21
20
19
18
60
17
16
13
12
11
10
9
8
7
6
5
4
15
14
15
14
59
58
39
61
54
38
36
55
56
35
21
22
21
37
27
40
53
52
46
51
50
41
3
2
1
57
47
45
46
44
48
49
42
43
34
33
28
31
30
29
32
25
26
Figure 3. Exploded Assembly Diagram of Mechanical Parts
Pelco Manual C343SM (12/98) 7
Table A. Mechanical Parts List (Figure 3)
Item Quantity Description Part Number
11Cover, pan side 9044016COMP
22Ball stud PT180410000
32Ball stud bracket 9044011COMP
41Pan motor, 24 VAC 9048000
51Pan motor gearhead 9048002
61Pan motor sprocket 90010023
71Pan motor bracket 9044009COMP
81Tilt preset potentiometer POTP010.0K*
91Tilt potentiometer bracket 9044014COMP*
10 1 Gear, 40 teeth 9004018COMP*
11 1 Gear, 52 teeth 28010016*
12 1 Tilt limit ring 9004012COMP
13 2 Tilt limit stop 1554050COMP
14 4 Actuator, with insulator SWIJS138B
2**
15 4 Switch SWI1SM1
2**
16 1 Upright, pan side 9044002COMP
17 1 Bushing, pan side PT250010004
18 1 26-pin, subminiature, D-type socket COND226S
19 1 Tilt shaft connector guide 9004015COMP
20 1 Tilt shaft feed-through 9004000COMP
21 5 Thrust washer, .030" 90010002
22 3 Thrust bearing 90010001
23 1 Thrust washer, .060" 90010024
24 1 Bronze bushing 90010006
25 1 Cross-brace uprights 9044008COMP
26 1 Upright, tilt side 9044001COMP
27 1 Worm gear, 40 teeth 9001009
28 1 Sprocket 90010022
29 1 Tilt motor, 24 VAC 9048000
30 1 Tilt motor gearhead 9048001
31 1 Tilt motor bracket 9044010COMP
32 1 Sprocket 90010023
33 1 Circuit board assembly, 24 VAC PCB9041120ASSY
34 1 Cover, tilt side 9044017COMP
35 1 Pan spindle 9004030COMP
36 3 Pan limit stop 5804006COMP*****
37 1 Bronze bushing 90010029
38 1 Base 9044007COMP
39 1 Pan limit stop 1554049COMP*****
40 1 Slip ring 250010000***
41 1 Preset gear, pan spindle 9004017COMP***
42 1 Pan potentiometer bracket 9004008COMP
43 1 Gear, 56 teeth 90010020*
44 1 Pan preset potentiometer POTDARM010.0K***
45 2 Gear train nut 9004009COMP
46 4 Bronze bushing 5806005
47 8 Thrust washer 5806003
48 4 Thrust bearing 5806002
49 2 Worm 90010008
* PP models only *** SL/PP model only
** All SL models **** Non-360° PP models
Pan motor, 120 VAC 9048010
9004024COMP***
9004025COMP****
Tilt motor, 120 VAC 9048010
28010000******
9004022COMP****
POTP010.0K****
Continued on next page
8 Pelco Manual C343SM (12/98)
Table A. Mechanical Parts List (Continued)
Item Quantity Description Part Number
50 2 Gear train bracket 9004005COMP
51 1 3-position bar nut 9004006COMP
52 1 Sprocket 90010022
53 1 Pan spindle nut 9004019COMP
54 2 Ball stud receiver 90010030
55 1 Grommet, 3/8" ID GRO2175
56 1 Wire clamp 9004020COMP*****
57 2 Eyelet service bracket 9004023COMP
58 2 Snap ring 15510000*****
59 1 Pan limit switch bracket 1554051COMP*****
60 1 Wave spr ing 90010017
61 1 Grommet GRO2172N*****
62 1 Worm gear 90010009
The following items are not shown:
63 1 Pan chain assembly, 22 pitch 9041006ASSY
64 1 Tilt chain assembly, 28 pitch 9041005ASSY
65 1 2-position plastic connector CON640428-2
66 6 3-position plastic connector CON640428-3
67 1 6-position plastic connector CON640428-6
68 2 Cover labels LBL19000
69 1 Dust protector, 26-pin, subminiature,
70 1 37-pin connector plug (installed on cable) CON206305-1
71 37 Connector pins CON66400-1
72 1 Cable connector clamp CON206138-1
73 1 37-pin connector socket assembly
Grommet, 1/4" ID GRO2170**
9004021COMP**
D-type socket 90010025
(loose equipment) CONA37S
Includes 37-position housing, boot,
sockets, cable clamp
* PP models only *** SL/PP model only ***** Not on SL models
** All SL models **** Non-360° PP models ****** SL model
Pelco Manual C343SM (12/98) 9
Figure 4. Exploded Assembly Diagram of Hardware
10 Pelco Manual C343SM (12/98)
Table B. Hardware Parts List (Figure 4)
Item Quantity Description Part Number
A8Motor mount hardware Supplied with motor
B3Allen screw, 10-32 x .625-inch ZH10-32X.625CS
C1Spindle mount gasket 90010012
D11Flat washer, #10 ZH204X436X60C
E8Allen screw, 8-32 x 3/8-inch ZH8-32X.375CS
F8Split lock washer, #8 ZH8LWSSL
G3Screw, 2-56 x 3/8-inch, pan head, Phillips ZH2-56X.375SRS
H3Internal star washer, #2 ZH2LWSIS
I9Screw, 4-40 x 3/8-inch, pan head, Phillips ZH4-40X.375SPP
J25Internal star washer, #4 ZH4LWSIS
K4Screw, 8-32 x 1/4-inch, pan head, Phillips ZH8-32X.250SPP
L2Internal star washer, #8 ZH8LWSIS
M8Screw, 2-56 x 7/16-inch, pan head, Phillips ZH2-56X.437SPP
N12Screw, 6-32 x 1/2-inch, flat head, Phillips ZH6-32X.500SPS
O3Screw, 10-32 x 1/2-inch, flat head, Phillips ZH10-32X.500CFS
P2Screw, 4-40 x 5/8-inch, pan head, Phillips ZH4-40X.625SPP
Q2Roll pin ZHPIN3/32X3/4R
R6Allen bolt, 1/4-20 x 1/2-inch ZH1/420X1.50SS
S8Flat washer, 1/4 ZH260X562X65C
T8Split lock washer, 1/4 ZH1/4LWSSL
U2Screw, 10-32 x .875-inch, gray ZH10-32X.875GRY
V2Thread sealing washer PS3010002
W14Screw, 4-40 x .250-inch, pan head, Phillips ZH4-40X.250SPP
X2Screw, 6-32 x .375-inch, pan head, Phillips ZH6-32X.375SPP
Y2Allen bolt, 1/4-20 x 3/4-inch ZH1/420X.750SS
Z3Bolt, 1/4-20 x 3/4-inch, flat head, Phillips ZH1/420X.750SFS
AA 1 Self-tapping screw, 6-32 ZH6-SAX.250CPP
BB 2 Roll pin ZHPIN3/32X3/8R
CC 2 Allen screw, 4-40 x .250-inch ZH4-40X.250SS
DD 2 Dowel pin 90010004
EE 1 Cover gasket 90410011
FF 1 Tilt shaft gasket 90010014
GG 1 Set screw, 6-32 x 3/16-inch ZH6-32X.187S
HH 3 Split lock washer, #10 ZH10LWSSL
II 1 Spindle cover gasket 90010003
LL 2 Cable clamp ZH8913
and gearhead
Pelco Manual C343SM (12/98) 11
6.0 WARRANTY AND RETURN INFORMATION
WARRANTY
Pelco will repair or replace, without charge, any merchandise proved defective in material or workmanship for a period of one year after the date of shipment.
Exceptions to this warranty are as noted below:
• Five years on FT/FR8000 Series fiber optic products.
• Three years on Genex
• Three years on Camclosure® and fixed camera models, except the CC3701H-2, CC3701H-2X,
CC3751H-2, CC3651H-2X, MC3651H-2, and CC3651H-2X camera models, which have a five-year
warranty.
• Two years on standard motorized or fixed focal length lenses.
• Two years on Legacy®, CM6700/CM6800/CM9700 Series matrix, and DF5/DF8 Series
fixed dome products.
• Two years on Spectra
motion applications.
• Two years on Esprit
• Eighteen months on DX Series digital video recorders, NVR300 Series network video recorders, and
Endura™ Series distributed network-based video products.months on DX Series digital video
recorders, NVR300 Series network video recorders, Endura
products, and TW3000 Series twisted pair transmission products.
• One year (except video heads) on video cassette recorders (VCRs). Video heads will be covered for a
period of six months.
• Six months on all pan and tilts, scanners or preset lenses used in continuous motion applications
(that is, preset scan, tour and auto scan modes).
Pelco will warrant all replacement parts and repairs for 90 days from the date of Pelco shipment. All
goods requiring warranty repair shall be sent freight prepaid to Pelco, Clovis, California. Repairs made
necessary by reason of misuse, alteration, normal wear, or accident are not covered under this
warranty.
Pelco assumes no risk and shall be subject to no liability for damages or loss resulting from the
specific use or application made of the Products. Pelco’s liability for any claim, whether based on
breach of contract, negligence, infringement of any rights of any party or product liability, relating to the
Products shall not exceed the price paid by the Dealer to Pelco for such Products. In no event will
Pelco be liable for any special, incidental or consequential damages (including loss of use, loss of
profit and claims of third parties) however caused, whether by the negligence of Pelco or otherwise.
The above warranty provides the Dealer with specific legal rights. The Dealer may also have additional
rights, which are subject to variation from state to state.
®
Series products (multiplexers, server, and keyboard).
®
, Esprit®, ExSite™, and PS20 Scanners, including when used in continuous
®
and WW5700 Series window wiper (excluding wiper blades).
™
Series distributed network-based video
If a warranty repair is required, the Dealer must contact Pelco at (800)289-9100 or (559) 292-1981 to
obtain a Repair Authorization number (RA), and provide the following infor mation:
1. Model and serial number
2. Date of shipment, P.O. number, Sales Order number, or Pelco invoice number
3. Details of the defect or problem
If there is a dispute regarding the warranty of a product which does not fall under the warranty
conditions stated above, please include a written explanation with the product when returned.
Method of return shipment shall be the same or equal to the method by which the item was received by
Pelco.
RETURNS
In order to expedite parts returned to the factory for repair or credit, please call the factory at (800)
289-9100 or (559) 292-1981 to obtain an authorization number (CA number if returned for credit, and
RA number if returned for repair).
All merchandise returned for credit may be subject to a 20% restocking and refurbishing charge.
Goods returned for repair or credit should be clearly identified with the assigned CA or RA number and
freight should be prepaid. Ship to the appropriate address below.
If you are located within the continental U.S., Alaska, Hawaii or Puerto Rico, send goods to:
If you are located outside the continental U.S., Alaska, Hawaii or Puerto Rico and are instructed to
return goods to the USA, you may do one of the following:
If the goods are to be sent by a COURIER SERVICE, send the goods to:
If the goods are to be sent by a FREIGHT FORWARDER, send the goods to:
Service Department
Pelco
3500 Pelco Way
Clovis, CA 93612-5699
Pelco
3500 Pelco Way
Clovis, CA 93612-5699 USA
Pelco c/o Expeditors
473 Eccles Avenue
South San Francisco, CA 94080 USA
Phone: 650-737-1700
Fax: 650-737-0933
® Pelco, the Pelco logo, Spectra, Esprit, Genex, Legacy, and Camclosure are registered trademarks of Pelco.
™ Endura and ExSite are trademarks of Pelco. © Copyright 1998, Pelco. All rights reserved.
12 Pelco Manual C343SM (12/98)
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