VEAB VFL2-Ex, Инструкция по установке, эксплуатации и обслуживанию

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VFL2-Ex, VTL2-Ex, VRA2-Ex
3.7 The heater must be connected to the mains using
a permanent cable, and be connected to control equipment
that is approved for the risk area in question.
3.8 Use only cable connections with IP66 protection, or higher,
approved for Ex e or Ex d (not included).
3.9 The connector for external earth is placed closed to the
terminal blocks. The connector for the external equi-
potential is close to the cable entry points.
4.0 Maintenance and repairs
4.1 Make sure that there are no explosive gases in the area
around the heater, before commencing and during any
repairs and maintenance.
4.2 Follow any applicable regulations concerning work in
explosive gas environments.
4.3 If there is a need for replacement of the components, those
are to be ordered from VEAB Heat Tech AB.
The use of other components may affect the validity of the
certifications.
4.4 The heater elements of a VFL2-EX are mounted at the
bottom of the junction box, and can be replaced without
dismantling the frame from the duct system.
4.5 To maintain insulation of the heating elements, the power
step must be switched on for 24h, at least every six month.
4.6 No other specific maintenance is required except periodical
maintenance and function tests. See also section 3.6.
5.0 Overheating/Resetting
5.1 The heater is equipped with temperature limiters and
thermostat that is fail-safe, i.e. if the capillary tube should
rupture, the safety circuits are automatically tripped. This
safety function also means that the temperature limiter is
sensitive to shocks during transport. Before the heater is
used, perform a manual reset of the temperature limiter.
See figure 1 below.
If the temperature limiter with manual reset has tripped
during use, the following must be carried out:
1. Turn off the power supply.
2. Do a careful search for the cause that has tripped the
temperature limiter, and correct it.
3. When the cause has been corrected, reset the tempera
ture limiter in the junction box of the heater. If the
resetting is made through the lid, bolts/washers/gaskets
must be re-assembled with the correct torque, 9-10Nm.
See figure 1.
6.0 Markings and approvals
6.1 VFL2-Ex, VTL2-Ex, VRA2-Ex
6.2
6.3 Intertek Notified Body number: 0359
Report number: ITS10ATEX36956X
7.0 Wiring example
See appendix 1, page 10
SE
Återställningsarm, tryck för att
återställa.
GB Reset arm, push to reset.
Reset arm, push to reset.
Figure 1.
II 2 G Ex db eb mb IIC T3 Gb
Meets the requirements in EC/EFTA
Equipment group, II=other equipment
Equipment category, may be used in zone 1 and 2
Type of explosive atmosphere, G=gas
Explosion group
Temperature class: T3=surface temperature
max. 200°C
Equipment protection level (EPL)
Level of protection Encapsulation
Level of protection Increased safety
Level of protection Flameproof enclosure
European standard, approved equipment