Limitations For Use In Atex Environment; Speed Limitations; Maximum Pressure; Maximum Temperature - VERDER VERDERFLEX Dura D7 Instruction Manual

5 Limitations for use in ATEX
Environment
5.1

Speed Limitations

Maximum output
Pump Type
RPM
D5, D7, D10,
D15, D25 and 60 RPM
D35
D5, D7, D10,
-
D15 and D35
D25 -
79RPM @ 5 Bar
D45 59RPM @ 10 Bar
38RPM @ 16 Bar
47RPM @ 5 Bar
D55 38RPM @ 10 Bar
38RPM @ 16 Bar
Table 10 Dura 05-55 - Maximum /Minimum Output
5.2

Maximum Pressure

Pump Type
D5 and D7
D10 and D15
D25 and D35
D45 and D55
Table 11 Dura 05-55 - Maximum Pressure
5.3

Maximum Temperature

Maximum Medium
Pump Type
Temperature
D05-55 40°C
Table 12 Dura 05-55 - Maximum Temperature
5.4

Lightning Strike

End user to take provision that pump will be protected
against lightning strikes.
ATEX Instruction Manual
Dura 05-55
Minimum output
RPM
-
12.5 RPM
16.7 RPM
12.5 RPM
12.5 RPM
Maximum Discharge
Pressure BAR
8 BAR
12 BAR
16 BAR
16 BAR
Maximum Ambient
Temperature
40°C
Version 1.0v-07/2019
5.5

Ionising Radiation

Pump is not approved for use in radioactive area.
Standard, background radiation is permissible (< 50,000
Bq) Motor Protection.
5.6

Motor Protection

1. Motor must have PTCs fitted and correctly installed.
2. Motor must be protected by motor overload relays or
equivalent.
3. Motor must be protected in event of overload condi-
tion.
4. 'Ex' motors for vertical mounting (shaft down) should
be equipped with a Drip Cover (Impact Canopy) over
the Fan Cowl.
5.7

Pumped Media

The ATEX certification is only valid when pumping media
that is approved by Verder. Using the pump with media
that is not approved by Verder will make this certification
void.
5.8

Hose Material Limitation

The following hoses can be used on ATEX pumps
(when applicable):
NBR - Nitrile Rubber
NBR(F) - Nitrile Rubber (food grade)
EPDM - Ethylene Propylene Diene Monomer
NR - Natural Rubber
The following hoses cannot be used on ATEX
pumps:
CSM - Chlorosulfonated polyethylene
5.9 Limitation for Inserts that can
be used
The following inserts are suitable for use in an ATEX
environment:
Stainless steel
The following inserts cannot be used on ATEX
pumps:
PP - Polypropylene
PVDF - Polyvinylidene fluoride
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