HAMMELMANN HDP 502 / S 1100-50, Руководство по эксплуатации, Страница: 294 / 311

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2.4 Safety instructions for installation work, inspection operation and maintenance
The operator is responsible to assure that all installation work, inspection, operation and maintenance must be
carried out by authorised and qualified specialist personnel, which is thoroughly familiarised with the pump operating
instructions and these supplementary operating instructions.
If necessary, additional explosion protection regulations must be considered.
3 Instructions concerning design of pump and accessories
3.1 General
The pumps and the accessories for installations in hazardous areas must comply with the relevant category of
mechanical and electrical equipment.
Some details are pointed out below:
3.2 Pump pressure containment components
For handling inflammable fluids, the pump pressure containment components must be made of ductile
material.
3.3 Coupling, coupling guard
The accident prevention regulations require, that pump drives must not be operated without a coupling guard. If a
customer specifically decides, not to include a coupling guard in our delivery, then the operator must provide such
coupling guard himself. The coupling must be selected and sized in accordance with the instructions of the coupling
manufacturer. It is important to make sure that the materials selected for coupling and coupling guard are non-
sparking in the event of mechanical contact. Sterling Fluid Systems scope of supply meets this requirement.
In hazardous areas coupling guards must be of non-sparking material, whereby the coupling material must be
considered.
3.4 Belt drives
Belts must include some electrically conductive material.
4 Instructions concerning installation and start-up of pump sets
In addition to the normal installation instructions, the specific criteria for explosion proof are listed below:
4.1 Coupling
The coupling must be installed, started-up and operated in accordance with the operating instructions of the
coupling manufacturer. Misalignment of the coupling may result in inadmissible temperatures at the coupling and
pump and motor bearings. It has to be ensured, that the half couplings are correctly aligned at all times.
4.2 Connection to power supply
Only a properly trained electrician must effect connection to the power supply. The available main voltage
must be checked against the data on the motor rating plate and an appropriate start-up method must be selected.
It is strongly recommend to use a motor protection device (motor protection switch).
In hazardous areas, compliance with national and local regulations form an additional requirement for
electrical connections.
4.3 Earthing
To eliminate risks due to electrostatic charging, the pump set must be earthed directly or through an earthing
line.
4.4 Belt drive
Belt-driven pump sets must always be earthed. The condition of the belts must be checked regularly.
HAMMELMANN Code no.: 04.03226.0769
Type 32-200