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Hydraulic Connections
Check that the suction line does not exceed the maximum height of 1.5 m from the
tank bottom. Unscrew the pipe-wrench nut and remove the two protective caps from
fittings (in the case a pump head needs to be removed it is recommended to reuse
the protective caps to prevent any leakage from the pump body).
Note: If the product to be dosed is concentrated sulfuric acid, previously remove any
water from the pump and use polyethylene pipes.
All operations to tighten the pipe connections of the pumps must be done by hand
without using any tools (e.g. pliers squeeze tube) to avoid damaging the hydraulic
connections.
Warning! Before performing any kind of operation on the pump, carefully read the
HSDS of the chemical to be dosed in order to define the proper behaviors to be
followed and the personal safety equipment to be worn.
Suction Line
Unscrew the fixing nut of the connector located on the bottom left side of the pump
head and marked in the figure with an incoming arrow. Cut the transparent PVC
Crystal tube. Insert the fixing nut and the tube-wrench on the tube. Mount the tube on
the conic tube-holder of the suction connector pushing it until it reaches the stop
collar. Fix the tube by screwing the fixing nut onto the suction connector of the pump
head. Locate the PVC Crystal tube inside the tank and/or the suction lance. Unscrew
the fixing nut of the foot filter. Cut the transparent PVC Crystal tube. Insert the fixing
nut and the tube-wrench on the tube. Mount the tube on the conic tube-holder of the
foot filter connector pushing it until it reaches the stop collar. Fix the tube by
screwing the fixing nut onto the connector of the foot filter. Screw the foot filter onto
the suction lance (if used) and/or locate it in its working place.
Notes:
● The foot filter must be located at a minimum distance of 5 cm from the tank
bottom.
● If a dense product is dosed, it is recommended to remove the small inside
filter from the foot valve to facilitate suction.
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