Low pressure manifold and filter housing, To remove, Reassembly – Hale SMR-U User Manual

Page 14: Filter housing

Section 6

LOW PRESSURE MANIFOLD AND FILTER HOUSING

To Remove

Assuming that the gauge, thermal relief and foam connections have been
disconnected, it is necessary to remove the primer discharge pipe from the filter
housing to the pump body. Remove 8 off M8 bolts to remove the filter body. The
low pressure manifold is connected to the volute body by means of 4 off M10 bolts
surrounding the thermal relief valve and 2 M10 stainless steel socket head cap
screws inside the manifold casing (these 2 screws are fitted with bonded seals to
prevent leakage). The manifold may now be removed. The gasket between the
manifold and the filter housing will require renewal at this stage. The seal between
the volute body and manifold is an O ring.

The main outlets to the manifold (6 off) are sealed by means of O rings, seated in
grooves in the manifold faces.

Reassembly

When reassembling the manifold, all O rings should be replaced and Loctite 242
should be applied to all threads before refitting.

Filter Housing

The housing contains the primer disengagement filter, accessible from the front
panel area. This filter however, must not be removed whilst the pump is in
operation.

The flow across the filter is from outside to inside the cylindrical profile. The filter is
intended to restrict particle size in water entering the primer disengaging circuit.