CTX BOMBAPRO PH-RX, Operatinginstructions And Maintenance

Page: 69 / 120

Whenever the pump is dismantled from the pipework, you will be well advised to replace the caps on the
connectors to avoid residual liquid being spilled. Before attaching the delivery hose to the plant, prime the metering
pump by going through the sequence shown in Fig. 8. Before finalizing the installation of the dis-charge hose, make
sure that the pump strokes will not cause it to move and bump into rigid bodies. In case of priming difficulties, use a
normal syringe to suck liquid from the discharge nipple while the pump is in operation, continuing until you actually see
the liquid rise in the syringe. Use a short length of suction hose to connect the syringe to the discharge nipple. In case
of a pump equipped with an air bleed valve, unscrew the air relief valve B up to all the air in the pump head will be out.
F) Try to keep both the suction and discharge hose as straight as possible, avoiding all
unnecessary bends.
G) Select the most appropriate injection point on a pipe of the plant to be treated and there fit a 3/8"
female steel gas thread connector (similar to BSPm). This connector is not supplied with the pump. Screw
the injection valve to the gas connector, inserting a gasket as shown in Fig. 9. Then connect the discharge
hose to the conical connector on the injection valve and fix it with the supplied tube nut G. The injection valve
also acts as no return valve by means of a cylinder sleeve (elastomer, standard supplied in Viton®).
Note : The sleeve D must not be removed.
Injection valve installation diagram
A - Pipework
C - Injection valve
M - Conical connector for attaching the discharge hose
N -
3/8" female steel gas thread connector
G - Hose tube nut
T - Polyethylene hose
D - Cylinder sleeve (no return valve)
Fig. 9
ENGLISH
69