13
Connection and exploded views
Tubing connections on pump head (Fig. 8)
Manual purge (Fig. 9)
HC 1 series description (Fig. 10)
HC 2 series description (Fig. 11)
HC 3 series description (Fig. 12)
HC 4 series description (Fig. 13)
Pump head ball and lip valves (Fig. 14)
3.0 MAINTENANCE
3.1 General maintenance comments
Regular maintenance is essential if the pump has to give good service over a long period.
The following advice should be strictly followed:
It is difficult to estimate the periods between maintenance operations, because of the pumps
operating conditions and the chemicals employed. It is therefore the basic responsibility of the
operator to check regularly the appearance and condition of the pump and to clean and service it
according to his findings
3.2 Periodic maintenance
Liquid’s level in the tank should be monitored regularly and the tank refilled a necessary to avoid
the running dry of the pump. Wet parts of the pump, foot valve, suction/delivery valves and
the head and diaphragm should be inspected and cleaned at least every 3 months. Where
very aggressive chemicals are being dosed, (Sodium Hypo chlorite is particularly difficult) this
period may need to be reduced and cleaning be carried out more frequently. If pumps are not
used for long periods, scale, sediment and encrustation deposits can build up causing the pump to
malfunction. We highly recommend careful maintenance of the valves by running them
under clean water after long periods of non use. Alternatively, if the pump has not been used
for long periods, before re-setting up the operations, we strongly recommend operating it for at
least 30 minutes with the foot filter immersed in clean water to flush the pump.
3.3 Basic maintenance procedures
Before doing any maintenance read with attention the technical and safety characteristic of the
dosing chemicals and follow the next procedures:
1 Turn off the pump and immerse the foot filter and the injection tube in clean water. Turn on the
pump to let the water go through the pump head. If there are some crystals to be cleaned follow
the next procedures:
2 Immerse the foot filter and the injection tube into an adequate solution to remove the crystals
(ex. Chloridric Acid for Sodium Hipochlorite crystals); let the pump work for some minute. Then
repeat the action with water and connect the pump to the plant.
ENGLISH
