Dellmeco DME 15 R Series, Инструкция по эксплуатации

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49I DELLMECO I EODD DIAPHRAGM PUMPS
13.11. Back Flushing System (Option code BFE1, BFE2, BFE3)
A
pump equipped with the back flushing system (ball lift system) can be emptied along with an inclining discharge
line while being installed within the plant. It consists of a bypass-system in the side housings which can be activated
by manual valves (code BFE1, BFE2) or pneumatically (code BFE4, BFE5).
Pneumatic flushing system (code BFE4, BFE5) requires minimum air pressure 3 bar (valve is not attached to this
option).
Side housing O-rings are made of EPDM (code BF1, BF4) or PTFE (code BF2, BF5).
13.12. Pump Trolley (Option code T)
Using this device you can make your DELLMECO DME Pump mobile. The trolley is available for all pump sizes.
For more information please contact our Sales Department (
office@dellmeco.com ).
13.13. Bare-Shaft (Option code BS)
DME Series Pump with Bare-Shaft (BS) option means the pump is supplied without the drive unit (i.e., no electric
motor, coupling jaw and gearbox)
– please refer to the below picture of Plastic DME 15 R..-BS Pump:
In this case the drive unit has to be assembled by the customer in accordance with DELLMECO guidelines and local
safety regulations. However, DME Pump with BS Option cannot be provided with ATEX certification
– even if the drive
unit is assembled by the customer in compliance with all explosion-proof requirements.
13.14. ATEX Certificate (Option code ATEX)
Plastic DME Pumps manufactured in conductive PE and conductive PTFE can be adapted for installation and
use in potentially explosive atmospheres. This feature ensures the pump can safely transfer inflammable solvents,
alcohols and other volatile liquids without the danger of static electricity build-up (through grounding of non-metallic
pumps).
This also applies to all our DELLMECO Metal Series DME Pumps (made from Aluminium, Aluminium coated with
PTFE, Cast Iron, AISI 316 Industrial and AISI 316L Hygienic).
An appropriate combination of selected materials with the explosion-proof drive unit makes DELLMECO DME
Series Pumps suitable to work in explosive gas and dust environments without the risk of spark formation.
In the case of the DME Pump supplied with ATEX certification the final dimensions may vary from standard
versions (DME Series Pumps equipped with non-ATEX drive units) because the drive unit is specially designed for
ATEX environments. This is certified by the supplier and can only be assembled by DELLMECO.
It should also be noted that when an ATEX certificate is provided for the drive unit only and the customer adds
the pump, then the certificate is not valid for the complete unit. Only DELLMECO can provide the ATEX certificate
for the complete pump and drive unit.
II 2G IIB
T4…T3 Gb