Applicable Legislation And Standards; Risks And Limitations Of Product Use; Risks Associated With Operating In Explosive Atmospheres; Risks Associated With The Hydraulic Part Of The Valve - Argo-Hytos Rpex Gebrauchsanweisung

2.4 Applicable legislation and standards

The valve complies with the relevant requirements of legislation and standards:
Směrnice 2014/34/EU (harmonizované NV ČR 116/2016) Zařízení pro prostředí s nebezpečím výbuchu (ATEX)
IECEx OD 009 Operational Document
The following standards were used to assess the conformity of the electrical part:
CENELEC EN IEC 60079-0
Explosive atmospheres – Part 0: Equipment – General requirements
EN 60079-7, IEC 60079-7
Explosive atmospheres – Part 7: Equipment protection by increased safety „e"
EN 60079-18, IEC 60079-18
Explosive atmospheres – Part 18: Equipment protection by encapsulation „m"
EN 60079-31, IEC 60079-31
Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure „t"
The following standards were used to assess the conformity of the non-electrical part:
EN 1127-1
Explosive atmospheres – Explosion prevention and protection – Part 1: Basic concepts and methodology
ISO 80079-36
Explosive atmospheres – Part 36: Non-electrical equipment for explosive atmospheres – Basic method and requirement
ISO 80079-37
Explosive atmospheres – Part 37: Non-electrical equipment for explosive atmospheres – Non-electrical type of protection constructional safety „c",
control of ignition sources „b". liquid immersion „k"
EN ISO/IEC 80079-38
Explosive atmospheres – Part 38: Equipment and components in explosive atmospheres in underground mines

Risks and limitations of product use

3.

3.1 Risks associated with operating in explosive atmospheres

DANGER
DANGER
DANGER
3.2 Risk associated with the hydraulic part of the valve
DANGER
DANGER
WARNING
Page 8
Explosive atmosphere type and zone
The valve must not be used outside the specified range (see paragraph 1Product use ), in particular it is not
intended for equipment category M1group l (mines) zone 0 group II (gases) and zone 20 group III (dust).
Risk of explosion.
Surface temperature
When selecting the valve, the surface temperature requirement of the valve must be taken into account.
It must be min. 25 °C lower than the temperature necessary to initiate an explosion of an explosive
atmosphere of a given composition. If the initiation temperature is exceeded an explosion will occur.
Handling in an explosive atmosphere
It is forbidden to install, disassemble, repair or replace the valve in an exlosive atmosphere.
Risk of explosion.
Maximum operating pressure
The valve may be used for a maximum pressure of 350 bar in the ports P, A, B and 210 bar in portT.
If the maximum pressure is exceeded there is a risk of damage to the valve.
Exceeding the pressure value may cause the valve to rupture
I.e. exceeding 525 bar in ports P, A, B and 315 bar in port T.
Maximum hydraulic output
Section 4.6 of the product catalogue shows the operating limit curves for each type of spool valve. The
hydraulic performance is provided as the product of the working pressure and the flow rate. If the instant
power exceeds the curve limit, the valve may lose function . The spool is subjected to excessive hydrodynamic
forces, the valve will not stop and as a result ,control of the appliance will be lost.
Valve installation
The valve may only be mounted in the corresponding chamber. The seals must not be damaged. The valve must
be tightened with the specified tightening torque of 30 + 2 Nm. Otherwise, there is a risk of leakage of the
working fluid and pressure release of the valve. (For more details, see paragraph 7.2 Product installation)
Subject to change_SD1EX-A2(A3)_14088_1en_05/2022
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