Toxic And/Or Dangerous Liquid Dosage; Assembling And Dismantling The Pump - Astralpool EXACTUS Serie Normas Para La Instalacion, Uso Y Mantenimiento

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1.5 - TOXIC AND/OR DANGEROUS LIQUID DOSAGE

To avoid risk from contact with the hazardous liquids or toxic fumes, always adhere to the notes in this instruc-
tion manual:
Follow the instructions of the dosing liquid manufacturer.
Check the hydraulic part of the pump and use it only if it is in perfect condition.
Use only the correct materials for the tubing, valves and seals to suit the liquid to be dosed; where possible
shield the tubing with PVC conduit.
Before disconnecting the metering pump, make sure to flush out and neutralize the pump head with the
proper reagent liquid.

1.6 - ASSEMBLING AND DISMANTLING THE PUMP

1.6.1 - ASSEMBLY
All metering pumps are normally supplied fully assembled. For greater clarity, please consult the exploded view
of the pump appended at the end of the manual, which shows all the pump details and a complete overview of
all the pump components. These drawings are in any case quite indispensable whenever defective parts have
to be re-ordered. For the same purpose, the appendix also contains other drawings showing the hydraulic parts
(pump head and valves).
1.6.2 - DISMANTLEMENT
Proceed as follows before you dismantle the pump or before performing any other operation on it:
1. Disconnect the pins from the mains or by means of a two poles switch with 3 mm minimum distance between
the contacts. (Fig. 4).
2. Relieve all the pressure from the pump head and injection tube.
3.
Drain or flush all dosing liquid from the pump head. This operation can also be done with the pump discon-
nected from the plant by turning the pump upside-down for 15 to 30 seconds and without connecting the
tubing to the nipples: if this operation is not possible, dismount and remount the pump head using the four
mounting screws. (Fig. 11).
This operation calls for special attention, and you should therefore consult the drawings in Appendix and
Chapter 1.4"RISKS" before you commence work.
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