Functioning - Wilo -Zeox FIRST Installation And Operating Instructions Manual

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CAUTION! Risk of product damages!
Never operate the pump dry. The system must be filled before starting the pump.
Grease lubricated rolling bearings are supplied with adequate grease ensuring a correct
functioning. In case of insufficient, contaminated or degraded grease due to incorrect
storage or inadequate transport, proceed to its replacement. This intervention, to be car-
ried on when pump is stopped, consists in removing the remaining grease through the
lower outlet holes and replace it with fresh one through the suitable greasers. Suggested
greaser frequency is every 2000-3000 working hours and, in any case, once a year with
grease NGLI2 consistence.
CAUTION! Risk of product damages!
An excessive quantity of grease could cause bearing overheating.
Fill pump and suction pipeline with water, ensuring that there are no air pockets. If possi-
ble, turn the shaft of the pump by hand acting from the coupling.
Start the pump with delivery gate slightly open, check that pump rotation is in the same
direction indicated by the arrow on the pump body. With pump running, open gradually
the gate to requested performances.
When pump is equipped with stuffing box seal, dripping must be of 20/60 drop/minute to
ensure cooling and good lubrication of the shaft. Adjust the flow releasing or tightening
slowly and gradually the nuts of the stuffing box flange.
CAUTION! Risk of damage of the installation!
Before stopping the set, close almost completely the delivery gate to avoid dangerous
water hammering.

8.2 Functioning

CAUTION! Risk of malfunction or product damages!
When respecting use limits, the pump will operate without vibrations or anomalous
noises.
Keep the operating conditions (capacity-pressure) within the values shown on the
plate.
The non-respect of these values always causes dangerous damages.
After starting check again the alignment of the pump set.
Every 1000 hours approx. it's necessary to check that operating data are respected; in
case of anomalies or variations of operating data refer to chapter 8 following relevant
suggestions.
Refer also to information reported on the motor/engine manual.
Installation and operating instructions Wilo-Zeox FIRST 33