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10. Shutdown
Before starting any maintenance and before prolonged downtime, drain the chemical
from the pump and rinse it out with a neutral medium.
CAUTION!
Excess chemicals must be disposed of in accordance with local rules and regulations.
Note the applicable accident prevention regulations and wear personal protective clo-
thing.
Goggles
Protective gloves
Protective suit
CAUTION!
Next the dosing pump must be disconnected from the power supply and secured to
prevent unauthorized restarting.
CAUTION!
The pressure must be relieved before disconnecting the discharge line from the pump
discharge valve so that chemicals will not spray out.
It is advisable to loosen the discharge and suction check valves in order to drain the
dosing head.
11.
Maintenance
Dosing pumps are produced according to the highest quality standards and have a
long service life. Nevertheless some parts are subject to wear and tear caused by its
running (e.g. diaphragm, valve seats, valve balls). To ensure a long operating life, visual
inspection is recommended regularly. Periodic maintenance protects the dosing pump
and system from unexpected downtime.
11.1
Lubricants
The diaphragm-dosing pump is designed to be maintenance friendly. The dosing pump’s
transmission is greased for life with a molybdenum-disulfide. Nonetheless the grease
has to be renewed after approx. 5000 hours of operation when under heavy operational
use such as under high environment temperatures and long running times. For this
purpose you can use for example: “Molykote BR plus” or „OKS400“.
NOTICE!
The dosing pump motor is not to be greased with oil!
11.2 Maintenance of storage
The motor shaft storage are ball holdings caulked and greased for life. The other anti-
friction bearings in the transmission as well as the plain bearing of the diaphragm insert
are greased with the operational lubricant.
NOTICE!
CAUTION!
CAUTION!
CAUTION!
