Edgewater Networks 388CC, Owner Assistance Manual

Page: 394 / 395

Separate the 2 pump bodies. Remove the joint
ring (key 11), and inspect it. Replace the joint
ring if it is damaged or age hardened.
Thoroughly clean and de-scale all parts.
Remove shaft seal (only if leaking)
Grip the motor shaft between the motor (key 18)
and the adaptor plate (key 19), and turn the
impeller CLOCKWISE and remove it.
Remove the 4 nuts and washers (key 15 & 16)
from the motor studs, and keep them. Separate
the adaptor plate, together with the lower pump
body, from the motor.
Remove the 3 screws (key 19) that fasten the
adaptor plate to the lower pump body, and keep
them. Separate the adaptor plate from the lower
pump body.
Using a blunt instrument, carefully push out the
ceramic seal assembly (key 13) from the lower
pump body (key 14).
Fit new shaft seal
YOU MUST:
Have perfectly clean and dry fingers when you
handle the ceramic seal, or wear surgical gloves.
Take the stationary half of the new seal (white
ceramic face in rubber cup) and, with rubber cup
at the bottom, press it into the seal housing in the
lower pump body (Key 14) using your clean, dry
fingers only, leaving white ceramic face exposed.
Re-fasten the adaptor plate (key 17) to the lower
pump body (Key 14).
Re-fasten the adaptor plate, together with the
lower pump body, to the motor (key 18).
Carefully slide the rotating half of the ceramic
seal (black carbon face) down the motor shaft to
cover the white ceramic face.
Grip the motor shaft between the motor and the
adaptor plate, and re-place the impeller by
turning it ANTI-CLOCKWISE. Fasten the
impeller by hand only - do NOT use any tools or
leverage.
Re-assemble pump
Place joint ring (key 11) in position.
Re-fasten the upper pump body (key 10) to the
lower pump body (key 14), using the 9 screws
(key 20).
Refit pump assembly
Reconnect the Flush pump positive and negative
motor leads. Offer up the complete pump and
hoses assembly to the bowl and to the bowl
outlet.
Re-fasten the motor to the support block (key 5),
using a new support strap (key 4).
Re-fasten the inlet hose (key 8) to the bowl
outlet, with the hose clip (Key 9).
Re-fasten the 2 halves of the non-return valve
(key 23).
Hoses
Examine all hoses throughout their length for
chafe, kinks and splits under hose clips. Check
all hose clips for corrosion and replace worn or
damaged parts.
Reconnect all loose hose ends and secure
them with their hose clips.
Servicing - Testing
Open inlet and outlet seacocks (and secondary
valves if fitted).
Switch on power of replace fuse.
Use Touch Pad Controller as described on page
2, to check all functions, and then inspect for
leaks.
ON COMPLETION - CLOSE BOTH SEACOCKS!
TROUBLE SHOOTING
Bowl fills when not in use
Shut seacocks
Fit Vented Loops
Waste water re-appears in bowl
Check non-return valve (key 23)
Bowl does not empty
Open Outlet Seacock
Check non-return valve (key 23), Discharge
Hose or Outlet Seacock for blockage.
Remove pump and check for blockage
Water does not come in
Open Inlet seacock
Check Inlet hose connections are airtight
Check electrical connections to Solenoid Valve or
Rinse pump
CAUTION: Do NOT allow anything at all to
touch or fall onto the mating faces of the new
ceramic seal!
CAUTION: Do not apply flame to the hose. Do not apply
flame or heat to the plastic hose tails on the toilet, rinse
pump or solenoid valve. Do not use oils, greases or
synthetic lubricants. Do not apply sealing compounds to
any hose connections. Do not over tighten hose clips.
Any of these actions may result in cracking or
breakage of the plastic parts.
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