JS Pump RSD-400 Operating manual

RSD-400 - Maintenance Guide
Remove the 3 nuts and washers
from the RSD base
Keep these safe.
Remove the rubber
base to expose the
non return flap
valve and volute /
impeller area

Using a flat head
screwdriver, check to see
if the impeller is free to
turn.
If the impeller is bound or
feels restricted or gritty,
continue through these
steps.
Using a PH2 Philips
screwdriver, remove the
screws marked to
release the volute from
the pump.

Scrape out and
clean the volute from
all debris and build-
up.
The volute should be
smooth and flat.
Ensure that the o-
ring remains in place
around the outer
edge of the volute

Once the volute and
impeller are clean and
clear from the blockages
and debris.
Carefully reassemble the
pump, taking care to
ensure that the O-rings
are in place on the volute
and on the lower rubber
cup.