Operating instructions

Page 30
ProMinent
®
4 Start-up/Maintenance
WARNING
• For all metering pumps for metering inflammable media applies: Starting up and
emptying only supervised by a competent person.
IMPORTANT
Observe the safety notes provided in Section 1.
4.1 Start-up
All general guidelines in the accompanying ”General operating instructions ProMinent
®
motordriven metering pumps and hydraulic accessories” apply.
WARNING
Only EX pump: Please thoroughly read the chapter “Important Additions for Metering
Pumps in the EX Area” of the “General Operating Instructions ProMinent Motor Metering
Pumps and Hydraulic Accessories”!
4.2 Maintenance
WARNING
• Only EX pump: Please thoroughly read the chapter “Important Additions for Metering
Pumps in the EX Area” of the “General Operating Instructions ProMinent Motor Metering
Pumps and Hydraulic Accessories”!
• Only send the equipment for repair or maintenance in a cleaned condition and with the
liquid end flushed. However, should any safety precautions be necessary even after
careful draining and cleaning of the equipment, the required information must be listed
in the Safety Declaration!
The Safety Declaration forms part of the inspection/repair contract.
Maintenance or repair work will only be carried out if a Safety Declaration - correctly
and fully completed by an authorised and qualified member of the Operator’s staff -
is available.
A copy of the form is included in the “General operating instructions for ProMinent
motor-driven dosing pumps and hydraulic accessories” or can be downloaded at
www.prominent.com.
IMPORTANT
After loosening the liquid end screws (e.g. to change the valves or diaphragm), the screws
must be retightened clockwise to the specified tightening torque.
What requires maintenance?
• Secure fit of liquid end screws.
• Secure fit of metering lines (intake and delivery sides).
• Secure fit of head valve and intake valve.
• Leakage hole at end disc for moisture (indicates possible diaphragm failure).
• Operate pump continuously for a short period of time in order to check whether it delivers
correctly.
Maintenance intervals
General recommendation for maintenance intervals - every 3 months.
Shorter intervals are recommended if operated under load conditions (e.g. continuous operation).
The gear oil should be changed after approx. 5000 duty hours.
Gear oil ISO viscosity class VG 460, e.g. Mobil Gear 634,
ProMinent Order No. 555325 (Amount of oil approx. 0.5 l).
The metering diaphragm is a wearing part whose service life is dependent on following parameters:
• System backpressure.
• Operating temperature.
• Properties of medium to be metered.
The service life of the diaphragm is restricted in the case of abrasive media. In such cases, it is
recommended to check the diaphragm more frequently and to install a diaphragm failure monitor.
Start-up/Maintenance
BA_SI_036_06_10_EN.p65 08.06.2010, 11:38 Uhr30