®
PT480
Legacy® Series
Pan/Tilts
Maintenance/
Service Manual
C343SM (12/98)
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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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 resis-
tance 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.
CAUTION:
TO REDUCE THE RISK OF ELECTRICAL SHOCK,
DO NOT REMOVE COVER. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
Please thoroughly familiarize yourself with the information
in this manual prior to installation and operation.
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2.0 DESCRIPTION
The PT480 Legacy® Series 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. Pelco’s RediLINK™ connector makes it simple and quick for you 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
PT480-SL
PT480P with preset positioning capabilities.
PT480P with 360° pan rotation.
PT480SL/PP
PT480-24P
PT480-24P/PP
PT480-24SL
PT480-24SL/PP
PT480SL with preset positioning capabilities.
Medium-duty, indoor/outdoor pan/tilt, 24 VAC.
PT480-24P with preset positioning capabilities.
PT480-24P with 360° pan rotation.
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 parts 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 back-
lash 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
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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 check
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 hex 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 Techni-
cal 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 force the covers
into their latches.
d. Replace the screws in the covers.
G
H
Figure 1. Pan and Tilt Adjustments
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4.0 WIRING DIAGRAMS
Figure 2. PT480 Series Wiring Diagram
6
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5.0 EXPLODED ASSEMBLY DIAGRAMS
Figure 3. Exploded Assembly Diagram of Mechanical Parts
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Table A. Mechanical Parts List (Figure 3)
Item
Quantity
Description
Part Number
1
2
3
4
1
2
2
1
Cover, pan side
Ball stud
9044016COMP
PT180410000
9044011COMP
9048000
9048010
9048002
Ball stud bracket
Pan motor, 24 VAC
Pan motor, 120 VAC
Pan motor gearhead
Pan motor sprocket
Pan motor bracket
Tilt preset potentiometer
Tilt potentiometer bracket
Gear, 40 teeth
Gear, 52 teeth
Tilt limit ring
Tilt limit stop
Actuator, with insulator
5
6
7
8
9
10
11
12
13
14
1
1
1
1
1
1
1
1
2
90010023
9044009COMP
POTP010.0K*
9044014COMP*
9004018COMP*
28010016*
9004012COMP
1554050COMP
SWIJS138B
4
2**
4
15
Switch
SWI1SM1
2**
1
1
1
1
1
5
3
1
1
1
1
1
16
17
18
19
20
21
22
23
24
25
26
27
Upright, pan side
Bushing, pan side
9044002COMP
PT250010004
COND226S
9004015COMP
9004000COMP
90010002
90010001
90010024
90010006
26-pin, subminiature, D-type socket
Tilt shaft connector guide
Tilt shaft feed-through
Thrust washer, .030"
Thrust bearing
Thrust washer, .060"
Bronze bushing
Cross-brace uprights
Upright, tilt side
9044008COMP
9044001COMP
9001009
Worm gear, 40 teeth
9004024COMP***
9004025COMP****
90010022
9048000
9048010
9048001
9044010COMP
90010023
PCB9041120ASSY
9044017COMP
9004030COMP
5804006COMP*****
90010029
9044007COMP
1554049COMP*****
250010000***
28010000******
9004017COMP***
28
29
1
1
Sprocket
Tilt motor, 24 VAC
Tilt motor, 120 VAC
Tilt motor gearhead
Tilt motor bracket
Sprocket
Circuit board assembly, 24 VAC
Cover, tilt side
Pan spindle
Pan limit stop
Bronze bushing
Base
Pan limit stop
Slip ring
30
31
32
33
34
35
36
37
38
39
40
1
1
1
1
1
1
3
1
1
1
1
41
1
Preset gear, pan spindle
9004022COMP****
42
43
44
1
1
1
Pan potentiometer bracket
Gear, 56 teeth
Pan preset potentiometer
9004008COMP
90010020*
POTDARM010.0K***
POTP010.0K****
9004009COMP
5806005
5806003
5806002
90010008
45
46
47
48
49
2
4
8
4
2
Gear train nut
Bronze bushing
Thrust washer
Thrust bearing
Worm
*
PP models only
*** SL/PP model only
** All SL models
**** Non-360° PP models
Continued on next page
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Table A. Mechanical Parts List (Continued)
Item
Quantity
Description
Part Number
50
51
52
53
54
55
2
1
1
1
2
1
Gear train bracket
3-position bar nut
Sprocket
Pan spindle nut
Ball stud receiver
Grommet, 3/8" ID
Grommet, 1/4" ID
Wire clamp
9004005COMP
9004006COMP
90010022
9004019COMP
90010030
GRO2175
GRO2170**
56
1
9004020COMP*****
9004021COMP**
9004023COMP
15510000*****
1554051COMP*****
90010017
57
58
59
60
61
62
2
2
1
1
1
1
Eyelet service bracket
Snap ring
Pan limit switch bracket
Wave spring
Grommet
Worm gear
GRO2172N*****
90010009
The following items are not shown:
63
64
65
66
67
68
69
1
1
1
6
1
2
1
Pan chain assembly, 22 pitch
Tilt chain assembly, 28 pitch
2-position plastic connector
3-position plastic connector
6-position plastic connector
Cover labels
9041006ASSY
9041005ASSY
CON640428-2
CON640428-3
CON640428-6
LBL19000
Dust protector, 26-pin, subminiature,
D-type socket
90010025
70
71
72
73
1
37
1
37-pin connector plug (installed on cable)
Connector pins
Cable connector clamp
37-pin connector socket assembly
(loose equipment)
CON206305-1
CON66400-1
CON206138-1
1
CONA37S
Includes 37-position housing, boot,
sockets, cable clamp
*
PP models only
*** SL/PP model only
**** Non-360° PP models
***** Not on SL models
****** SL model
** All SL models
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Figure 4. Exploded Assembly Diagram of Hardware
10
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Table B. Hardware Parts List (Figure 4)
Item
Quantity
Description
Part Number
A
8
Motor mount hardware
Supplied with motor
and gearhead
B
C
D
E
F
3
1
11
8
Allen screw, 10-32 x .625-inch
Spindle mount gasket
Flat washer, #10
Allen screw, 8-32 x 3/8-inch
Split lock washer, #8
ZH10-32X.625CS
90010012
ZH204X436X60C
ZH8-32X.375CS
ZH8LWSSL
8
G
H
I
J
K
L
3
3
9
25
4
Screw, 2-56 x 3/8-inch, pan head, Phillips
Internal star washer, #2
Screw, 4-40 x 3/8-inch, pan head, Phillips
Internal star washer, #4
Screw, 8-32 x 1/4-inch, pan head, Phillips
Internal star washer, #8
ZH2-56X.375SRS
ZH2LWSIS
ZH4-40X.375SPP
ZH4LWSIS
ZH8-32X.250SPP
ZH8LWSIS
2
M
N
O
P
Q
R
S
T
8
12
3
2
2
6
8
8
Screw, 2-56 x 7/16-inch, pan head, Phillips
Screw, 6-32 x 1/2-inch, flat head, Phillips
Screw, 10-32 x 1/2-inch, flat head, Phillips
Screw, 4-40 x 5/8-inch, pan head, Phillips
Roll pin
Allen bolt, 1/4-20 x 1/2-inch
Flat washer, 1/4
Split lock washer, 1/4
ZH2-56X.437SPP
ZH6-32X.500SPS
ZH10-32X.500CFS
ZH4-40X.625SPP
ZHPIN3/32X3/4R
ZH1/420X1.50SS
ZH260X562X65C
ZH1/4LWSSL
U
V
W
X
Y
Z
2
2
14
2
2
Screw, 10-32 x .875-inch, gray
Thread sealing washer
Screw, 4-40 x .250-inch, pan head, Phillips
Screw, 6-32 x .375-inch, pan head, Phillips
Allen bolt, 1/4-20 x 3/4-inch
ZH10-32X.875GRY
PS3010002
ZH4-40X.250SPP
ZH6-32X.375SPP
ZH1/420X.750SS
ZH1/420X.750SFS
3
Bolt, 1/4-20 x 3/4-inch, flat head, Phillips
AA
BB
CC
DD
EE
FF
GG
HH
II
1
2
2
2
1
1
1
3
1
2
Self-tapping screw, 6-32
Roll pin
Allen screw, 4-40 x .250-inch
Dowel pin
Cover gasket
Tilt shaft gasket
Set screw, 6-32 x 3/16-inch
Split lock washer, #10
Spindle cover gasket
Cable clamp
ZH6-SAX.250CPP
ZHPIN3/32X3/8R
ZH4-40X.250SS
90010004
90410011
90010014
ZH6-32X.187S
ZH10LWSSL
90010003
LL
ZH8913
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6.0 WARRANTY AND RETURN INFORMATION
WARRANTY
Pelco will repair or replace, without charge, any merchandise proved defective in material or workman-
ship 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® Series products (multiplexers, server, and keyboard).
• 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®, Esprit®, ExSite™, and PS20 Scanners, including when used in continuous
motion applications.
• Two years on Esprit® and WW5700 Series window wiper (excluding wiper blades).
• 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™ Series distributed network-based video
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.
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 information:
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:
Service Department
Pelco
3500 Pelco Way
Clovis, CA 93612-5699
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:
Pelco
3500 Pelco Way
Clovis, CA 93612-5699 USA
If the goods are to be sent by a FREIGHT FORWARDER, send the goods to:
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.
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