Responsibility, Guarantee And Safety Precautions; Responsibility And Guarantee; General Information Before Beginning The Assembly; Description, Operation Mode - PFB SP50 Notice D'utilisation Et Entretien

1

RESPONSIBILITY, GUARANTEE AND SAFETY PRECAUTIONS

1.1

RESPONSIBILITY AND GUARANTEE

These operating instructions are addressed to persons, who are well acquainted with the assembly and
maintenance of elevators. Through knowledge of the elevator construction is necessary.
The firm P.F.B. takes no responsibility for damages, deriving from operations or actions, that have not been
carried out properly according to the following operating instructions and that therefore may damage the
characteristics of the product.
P.F.B.'s guarantee may not be valid if the component part is used in a different way other than that described in
these instructions.
For technical security reasons, it is generally no allowed:
• to use two different safety gear heads jointly;
• to combine different designs;
• to install wrong instantaneous safety gear blocks or blocks destined to other applications other than the
intended one;
• to introduce changes of any kind on the safety gear heads.
1.2 SAFETY PRECAUTIONS
Generally the fixers are themselves responsible for the safety of the work.
The observance and respect of all the safety regulations in force, and the legal rules, are necessary to avoid
damages to persons, and to the product during the assembly, maintenance, and repair.
ATTENTION! Indication of danger. This sign indicates situations, that involve risks for individuals and
points out procedures for behavior.
DANGER! Indication of danger of possible damages to the structural element and to its component
parts (e.g. : mistakes in the assembly, etc ... ) .
2

GENERAL INFORMATION BEFORE BEGINNING THE ASSEMBLY

2.1

DESCRIPTION, OPERATION MODE

The instantaneous safety gear block is a safety device working with wedge-shape engaging roller elements.
The operation takes place with the fastening to the overspeed governor rope.
By exceeding the allowed driving speed - through the overspeed governor and the fixing of the rope anchor
one or two hardened steel rollers (located on both sides of the guide rails) are set in motion by a lever linkage.
This motion occurs upwards, on an inclined level which narrows upwards. By touching the guide rail, the rollers
wedge with the supporting console and the guide to such an extent that an automatic stoppage takes place.
The elevator car is slowed down until it stops. According to its concept of operation, the maximum brake force is
immediately reached after the release, thus, producing an extremely short braking distance. After the stop,
despite dimension and load, the elevator car is held fast at the guide rails.
The release of the brake takes place by lifting the elevator car. The clamped rollers are pushed away from the
guide rail and restored to the starting position by means of the return springs located on the engaging linkage.
Therefore, both the safety gear heads must be perfectly synchronized, so that the stop takes place evenly. An
irregular brake operation causes severe distortions in the elevator car framework, not only by unnecessarily
straining the stability of the structure, but could also compromise the braking operation.
The safety gear blocks are provided with the homologation according to the rules and regulations for elevators
2014/33/EU, with the following EU-type-approval test numbers:
• type BP1 : TÜV EU-SG 515
• type BP1S : TÜV EU-SG 515
• type BP2 : TÜV EU-SG 516
• type BP3 : TÜV EU-SG 517
• type BP3S : TÜV EU-SG 517
• type BP100 : TÜV EU-SG 1035/1
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• type SP 50 : TÜV EU-SG 361
• type SP 50B : TÜV EU-SG 361
• type SP 60 : TÜV EU-SG 362