Sky Elevator SKY 200-2 Scheda tecnica
INSTRUCTION, USE AND MAINTENANCE
OVERSPEED GOVERNOR
MANUAL FOR SKY 200-2
SKY 200-2
1
10KG
TENSION WEIGHT WITH HORIZONTAL
COUNTERWEIGHT
TYPE SKY-281
TYPE SKY 200-2
OPERATING INSTRUCTIONS
INDEX PAGE
1 GENERAL INFORMATION BEFORE BEGINNING THE ASSEMBLY 3
1.1 Descrpton, operaton mode
1.2 Responsblty and guarantee
1.3 Safety precautons 6
1.4 Workng nstructons on safety structural elements 6
1.5 Operatons schedulng 7
1.6 Type-plate, EC-certficaton mark, dentficaton
1.7 Consttuton of supply
2 ASSEMBLY 9
2.1 Assembly of the overspeed governor 9
2.1.1 Assembly n the engne room 9
2.1.2 Assembly on the top of the elevator shaft 10
2.2 Assembly of the rope of the overspeed governor/tenson weght wth counterweght 11
2.3 Electrc nstallaton of the safety swtches 13
3 SETTING UP OPERATIONS 14
3.1 Overspeed governor 14
3.2 Tenson weght wth counterweght 14
4 OPERATION TESTING 15
5 MAINTENANCE, CONTROL, REPAIR 16
5.1 Mantenance and control 16
5.2 Executon of repars 16
6 TECHNICAL DATA 17
6.1 Overspeed governor type SKY 200-2 17
6.2 Tenson weght wth counterweght 18
* SKY 200-2 = Bdrectonal nterventon
SKY 281 = Down drecton nterventon
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1 GENERAL INFORMATION BEFORE BEGINNING THE ASSEMBLY
1.1 DESCRIPTION, OPERATION MODE
The overspeed governor s a safety devce whch turns on when the allowed speed of the elevator car s excee-
ded.
If the elevator car, durng ts upward/downward run, exceeds ts nomnal permssble speed, (untl the trppng
speed s reached), the overspeed governor turns on and, n turn, releases – on the overspeed governor rope – a
brake mechansm, called safety gear, whch s located on the elevator car. The elevator car stops and s kept
back by the gudes.
The same overspeed governor (fig. 1) s made up of pulley wth:
- governor wheel (1) wth trapezodal undercut groove to house the overspeed governor rope
- test grooves for operaton tests (2)
- cam rm (3);
- eccentrc stop (4).
The rope, secured to the clamp of the safety gear and stretched by a weght, operates the governor wheel (1)
through ts own pressure n the trapezodal undercut groove.
Besde the trapezodal groove, a cam rm (3) wth eccentrc stop (4) s also mounted on the governor wheel.
Such rm allows the pendulum (6) to operate wth an upward/downward oscllatng moton, by means of a pul-
ley mounted on a ball bearng.
The pendulum s drawn to the cam rm by a preloaded tenson sprng, correspondng to the scheduled trppng
speed.
By reachng the trppng speed, the swng of the pendulum on the cam becomes so extended, that the osclla-
tng dog clutch (8) meets the perpheral gude of the eccentrc stop, where t s clamped.
A plate (5) appled on the pendulum operates the safety swtch (9) before the mechancal clampng of the pen-
dulum. Through t, the control power of the plant s swtched off.
Fg. 1
Overspeed governor
SKY 200-2
4
The overspeed governor can be suppled for the assembly n the engne room.
DISPOSITION IN THE ENGINE ROOM
Overspeed governor
Rope anchor
Safety gears
Control devce
Governor rope
For the assembly on the top of the elevator shaft, the overspeed governor must be easly accessble
from the outsde (e.g. through a mantenance door).
DISPOSITION ON THE TOP OF THE ELEVATOR SHAFT
5
Overspeed governor
Cosse
Governor rope
Governor console
Safety gears
Control devce
Mantenance door
1.2 RESPONSIBILITY AND GUARANTEE
These operatng nstructons are addressed to persons, who are well acquanted wth the assembly of eleva-
tors. Thorough knowledge of the elevator constructon and mantenance are necessary.
The firm P.F.B. declnes any responsblty for damages, dervng from not workmanlke or smlar actons, that
have not been carred out accordng to the followng operatng nstructons and that therefore may damage the
characterstcs of the product.
P.F.B.’s guarantee may not be vald f the component part s used n a dfferent way than that descrbed n these
nstructons.
For techncal securty reasons, t s not allowed:
• assemblng of wrong overspeed governors, or governors destned to other applcatons than the ntended one
• ntroducton of changes of any knd to the overspeed governor.
1.3 SAFETY PRECAUTIONS
Generally the fitters are themselves responsble for the safety of the work.
The observance and respect of all the safety regulatons n force and the legal rules are necessary to avod da-
mages to persons and to the product durng the assembly, mantenance and repar.
Instructons that should be partcularly consdered regardng safety and damage preventon are ponted out
wth the followng symbols:
ATTENTION! Indcaton of danger. It ndcates stuatons, that nvolve rsks for the persons and stres-
ses out behavoural procedures.
DANGER! Indcaton of danger of possble damages to the structural element and to ts component
parts (e.g.: mstakes n the assembly, etc.).
IMPORTANT! Indcaton of useful nformaton.
The followng operatng nstructons are an ntegral part of the whole plant. They must be kept n a protected
and easly accessble place (such as for nstance n the engne room).
1.4 WORKING INSTRUCTIONS ON SAFETY STRUCTURAL ELEMENTS
Overspeed governors belong to the safety structural elements group. It s absolutely necessary to observe the
rules and regulatons that refer to ths structural element, ncludng the nformaton gven n the operatng n-
structons.
For that reason, before begnnng to work on ths component part, the followng operatng must be
red and understood, n partcular wth regard to the chapter concernng “safety precautons”.
Safety devces need partcular attenton. Ther perfect functonng s essental for a safe operaton of the plant.
The regulaton of the safety devces, that can be set only after the assembly, must be carred out mmedately
after the assembly tself.
If safety devces are already preset at the factory, ther operatons have to be mmedately tested.
Should t be necessary to dsassemble the safety devces durng mantenance or repar, when termnated they
have to be mmedately reassembled and adequately tested.
In these nstructons, the followng safety devces are descrbed:
• safety swtch on the overspeed governor (adjusted n the factory)
• safety swtch on the tenson weght wth counterweght (only n the plants that are n conformty wth
EN81).
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1.5 OPERATIONS SCHEDULING
Before begnnng the assembly, t must be made clear, n one’s own nterests, whch are the constructonal con-
dtons and condtons relatng to the space avalable, n order to carry out the assembly works n a safety con-
dtons and followng a logcal order.
It s therefore advsable, consderng all the gven crcumstances, to mentally smulate the varous processes
before the assembly actvty s nconsderately or hastly undertaken.
On recept of the supply, t s necessary to check the goods, by comparng each sngle part wth the purchase
order, n order to verfy ther conformty and completeness.
The data contaned n the type-plate have to be compared wth the order.
1.6 TYPE-PLATE, TEST MARK, IDENTIFICATION
The type-plate of the OVERSPEED GOVERNOR s attached to the structure on the sde.
The retaler of the plant s responsble for t beng legble.
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2021
Sky Elevator
1.7 CONSTITUTION OF SUPPLY
Fg. 2
Tenson weght wth horzontal counterweght for the gude and
tenson of the rope (optonal wth safety swtch for the verson n
conformty to EN 81).
Fg. 1
Overspeed governor Type SKY 200-2
Abb. 1
Abb. 2
8
10KG
SKY 200-2
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2 ASSEMBLY
For all the assembly works n the engne room or n the elevator shaft, t should be made clear that:
The entrance nto the assembly area, resp. the executon of all works can be carred out only by skl-
led workers.
In partcular, the followng safety measures should be respected:
Fx the ant-fall protecton devce (workng platform, for safety of the persons);
- cover the hole n the floor;
- secure the assembly tools and other objects to avod falls;
- n case the works have to be executed n the elevator shaft, lock the doorways and attach the ap-
proprate warnng sgn.
2.1 ASSEMBLY OF THE OVERSPEED GOVERNOR
2.1.1 ASSEMBLY IN THE ENGINE ROOM
PREPARATION
The assembly of the overspeed governor occurs ether drectly on the floor n the engne room or on a support.
Floor and support must resst to a pressure of 25 kN
In the elevators n conformty to EN 81, the passng openngs of the rope should be kept as small as
possble and must be fitted wth safety rngs 50mm hgh.
For elevators n conformty to TRA, the same procedure s recommended.
Before the assembly takes place, t s necessary to fix an adequate safety rng on the floor.
If, after the assembly on the cement, a stone floor s lad down, ts heght should be consdered (fig. 1)
Safety rng
Stone floor
Shaft coverng
Fg. 1
27
ASSEMBLY STEPS
• If a support s used, first of all screw t on together wth the over-
speed governor (fig. 1).
• Place the overspeed governor on the passng openng of the ro-
pe and algn t wth the plumb lne to the brake devce, .e. the sa-
fety gear (fig. 2).
• Mark the drlled holes and place the nserts (the nserts must re-
sst to the operaton load of at least 2 kN).
• Fx the overspeed governor (fig. 3).
Fg. 1
Abb. 1
Fg. 2
Abb. 2
Fg. 3
Abb. 3
2.1.2 ASSEMBLY ON THE TOP OF THE ELEVATOR SHAFT
Safety measures, referrng to works on elevator plants, must be observed.
Mount the overspeed governor as shown n fig. 1 and 2 (or n an opposte way).
In case of assembly n the elevator shaft, the overspeed governor must be easly accessble from the
outsde (e.g. through an nspecton door for mantenance operatons).
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