MAINTENANCE MANUAL
GP/146/99. Issue 9. October 2005
PRIMING SYSTEMS Continued
FILTER in PISTON PRIMER TUBE
From WT serial number 2369 (mid-2003) the pump is fitted with a filter in the tube
that connects the suction tube to the piston primers. This is designed to protect the
piston primers from the ingress of debris, particles as small as a grain of sand, that
can hold the priming valve open and allow water and debris into the bore and piston
of the primers. The debris causes scoring and can lead to premature seal failure.
It is recommended that the filter be checked every 3 months or after each use from a
source that may be heavily contaminated.
The filter element can be removed by unscrewing the hexagonal head of the housing
with a suitable spanner (27mm). Thoroughly clean the filter in water before returning
to the housing and tightening.
The filter is available as a retrofit kit for pumps supplied before mid-2003. The kit
includes the filter, all the necessary connectors and a new length of priming pipe that
may have to be shortened to fit different variations of pump. Part number 60523
refers for the retrofit kit.
Primer filter
Unscrew this hexagonal cap to
remove and clean filter element
(27mm spanner).
For part numbers numbers please refer to
Parts Manual, Suction Tube Group
©Hale Products Europe LTD, Warwick
GP/146/99
WTmaint - Issue9. 10-2005October 2005
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