In addition to PAR toilets, the flush pump will also fit the Brydon Boy, Mansfield
(Sealand) 751, Raske & Van der Meyde RM69, and Taiwan Magnetics TMC 999 toilet models.
In order to install the Flush Pump on the following listed toilet models, the indicated
optional mounting flange must be installed on the pump assembly.
Toilet Model Configuration Flange Adapter Kits:
GROCO HC, Mansfield 750
2 Hole , Kit # 291250000
GROCO HE, GROCO HF
3 Hole Equilateral Triangle , Kit # 29080-0000
Raritan Compact, Raritan PH & PH II, Sealand 752
4 Hole Square Pattern , Kit # 29110-0000
Wilcox Crittenden, Head Mate 1460 C and Winner R4042C*
4 Hole Square Pattern, Kit #: 29128-0000
The Wilcox Crittenden Flange Kit includes a 90" discharge elbow and joker
valve which must be used in place of the original elbow and joker valve. The Winner toilet
requires minor repositioning of the discharge plumbing because the new discharge elbow
will be lower and about 4 inched further from the toilet bowl.
The pump may be installed on toilets which are mounted as high as 2 feet above the
vessel's waterline or on toilets below the waterline if the total cumulative discharge
head does not exceed 6 feet it will fit toilets with either a compact size bowl or large
household size bowl. Generally, the pump requires no modification or additions to the
existing plumbing which services the manual pump assembly However. if the discharge hose
rises and falls repetitively and the total of all rising segments (when added together)
exceeds 6 feet, it should be re-routed so the total cumulative rise is less than 6 feet.
If this can not be done, the electric flush pump should not be installed.
WARNING: HAZARD OF FLOODING. IF TOILET IS INSTALLED BELOW THE
WATERLINE OR MAY BE BELOW THE WATERLlNE AT ANY ANGLE OF HEEL OR TRIM, THE INSTALLATION
MUST INCLUDE VENTED LOOPS PROPERLY POSITIONED ABOVE THE WATERLINE. FAILURE TO DO SO MAY
RESULT IN FLOODING WHICH CAN CAUSE LOSS OF PROPERTY AND LIFE.
The pump is assembled at the factory with a base mounting flange (macerator housing) which
fits the PAR 29090-Series and 29120-Series toilets if the pump is to be installed on a PAR
59128-Series (Brydon Boy), Mansfield (Sealand) 751. Raske & Van Der Meyde RM69,
Simpson Lawrence 444, or Taiwan Magnetics TMC 999, it is necessary to replace the four
hole mounting flange with the three hold mounting flange supplied with the pump in order
to install the pump on other applicable toilets, an optional mounting flange must be
installed (see Application section).
To change the mounting flange. remove the four screws (on bottom of pump assembly) which
secure the mounting flange to the waste pump body Note the relative position of the long
and short screws.
Grasp the pump body, wear-plate and motor with one hand, holding them together as an
assembly. Then slide the mounting flange macerator housing off the pump body with the
other hand trying not to disturb the wear-plate and damage the paper gaskets. It may be
necessary to gently tap on the flange with a plastic mallet to start it sliding off the
If the gaskets are damaged, they should be replaced with new ones (provided) before
attaching the new mounting flange macerator housing. To do this insert a blunt rod dowel
into the discharge hole in the pump body and push it against the impeller to prevent the
motor shaft from turning. Unscrew and remove the chopper from the motor shaft. Lift the
wear-plate and gaskets from the pump body and clean any paper residue which may stick to
the wear-plate and body. Reassemble with new gaskets by reversing the procedure.
Before assembling the new mounting flange/macerator housing to the pump body, ensure the
discharge port O-Ring is properly positioned in the O-Ring groove of the pump body. Secure
the flange to the pump body with the two shorter screws and the pump assembly to the motor
with the two longer screws.
Before removing the manual pump, flush the toilet for sufficient time to ensure all waste
is thoroughly flushed from the discharge hose.
WARNING: HAZARD OF FLOODING. CLOSE INLET AND OUTLET SEACOCKS
PRIOR TO DISASSEMBLING TOILET. FAILURE TO DO SO CAN CAUSE FLOODING WHICH MAY RESULT IN
PROPERTY DAMAGE OR LOSS OF PROPERTY AND LIFE.
Remove the 3/4" inlet hose and toilet bowl link hose from the manual pump. Detach the
discharge elbow, flange and joker valve assembly from the pump cylinder. It should not be
necessary to remove the discharge hose from the elbow.
Remove the screws which secure the pump assembly to the toilet base and retain them to
reattach the electric flush pump. Remove the manual pump assembly and the base flapper
valve/gasket assembly with attached brass weight. The pump and flapper valve may be
disinfected and stowed away for emergency use should the vessel lose electrical power.
Before assembling the electric flush pump to the toilet base, attach the discharge elbow,
flange and joker valve to the flush pump discharge. Position the new pump base gasket
(provided) on the toilet base. Align the flush pump mounting flange with the toilet base
and secure it with the pump mounting screws.
Attach the 3/4" inlet hose to the inlet port (beneath the upper pump pointing down).
Do not connect the pump inlet to a pressurized water system. Attach the bowl link hose to
the flush pump discharge port (rear of upper pump pointing back). If the bowl link hose is
not long enough or is kinked, replace it with the length of hose provided with the flush
If the toilet is positioned below the waterline or may be below the waterline at any angle
of heel or trim, the plumbing must include vented loops positioned above the waterline. To
do this, remove the length of hose which connects the flush pump with the bowl. In
its place install a length of hose long enough to connect the flush pump to a vented loop
fitting positioned a minimum of 8 inches above the waterline. Connect the other side of
the vented loop fitting to the bowl inlet elbow.
In below waterline installations with the discharge hose connected to a thru-hull fitting,
the hose must rise up and be connected to a vented loop positioned a minimum of 8 inches
above the waterline and then continue on to the discharge seacock. The total rise of the
discharge hose, however, must not exceed 6 feet of head. If a vented loop fitting in the
discharge hose positioned at least 8" above the waterline results in a total
discharge head that exceeds 8 feet, the electric flush pump should not be installed.
The flush pump should be wired to the power source with an electrical circuit independent
of all other accessories. The total length of wire should be kept to a minimum and the
wire should be sized in accordance with the following electrical Specifications chart. The
wires, if not run through a conduit, should be supported every 18 inches with'
The entire circuit should be protected by an appropriate size circuit breaker or switch
panel located as close to the power source as possible.
Connect the red motor lead to positive and !he black motor lead to negative. When making
connections to the motor leads use only mechanical locking (crimp type) connectors or
equivalent and seal the connection with silicone or heat-shrink tube to protect it from
NOTICE: Do not run pump dry for more than ten seconds. To do
so may result in damage to the pump impeller.
To flush the toilet simply turn the large flush control knob clockwise to the flush
position. In the flush position the flush pump provides rinse water to the bowl while the
waste pump simultaneously macerates and discharges the waste. Hold it in the flush
position long enough to evacuate all waste.
To evacuate liquid from the bowl so it will not slosh while underway, turn the flush
control knob counterclockwise to the drain position. In the drain position the flush pump
will lower the liquid level to the bottom of the china bowl while incoming rinse water is
reduced to a minimum.
If the toilet bowl is empty, a small amount of water may be added to the bowl prior to use
by turning the flush control knob to the flush position. Use only household type toilet
tissue (not biodegradable paper) of your choice.
The waste pump is designed to handle waste and toilet tissue but will not handle sanitary
napkins, tampons or hard solid objects.
WARNING: HAZARD OF FLOODING. BEFORE PERFORMING ANY SERVICE
CLOSE ALL WASTE SYSTEM SEACOCKS. FAILURE TO DO SO MAY RESULT IN FLOODING WHICH CAN CAUSE
LOSS OF PROPERTY AND LIFE.
1. Disconnect the electrical power to the flush pump.
2. Detach the discharge elbow, flange and joker valve assembly.
3. Remove the inlet hose and toilet bowl link hose from the
4. Remove the screws that attach the flush pump to the toilet base and lift the pump
assembly from the base.
FLUSH PUMP DISASSEMBLY:
1. Remove the control knob screw and the control knob.
2. Remove the seven screws which attach the flush pump cover assembly to the pump body and
lift off the cover assembly and the cork gasket.
3. Lift the brass wear-plate and the flushing pump impeller out of the impeller bore.
4. Carefully lift the switch from the pump housing taking care not to lose the positioning
dowel pin and gently disconnect the red wire leads.
5. Using a blunt punch or small piece of dowel inserted in the inlet port, push upward on
the control valve assembly to dislodge it from the flush pump housing.
6. Remove the two screws which secure the flush pump housing to the motor and lift the
pump housing off the motor.
7. Through the impeller bore side of the pump housing, push evenly against the shaft seal
to press it out of the seal bore.
WASTE SYSTEM DISASSEMBLY:
1. Remove the flush pump to waste pump bleed tube.
2. Remove the four screws that secure the macerator housing and pump assembly together and
to the motor. Note that they are two different lengths with the longer screws securing the
pump assembly to the motor.
3. Grasp the waste pump body and motor then pull the macerator housing off the pump body.
4. Remove the O-Ring around the discharge port.
5. Grip the flat of the shaft where it has been exposed by the remove top pump assembly to
prevent it from rotating. Unscrew and remove the chopper and its lock washer.
6. Remove the wear-plate and two gaskets from the pump assembly.
7. Remove the pump body and impeller from the motor then withdraw the impeller from the
8. Through the impeller bore side of the pump housing, push evenly against the shaft seal
to press it out of the bore.
WASTE PUMP REASSEMBLY:
1. Press the lip seal into the seal bore of the pump body with the open side of the seal
facing the impeller bore.
2. Lubricate the impeller bore of the body and the motor shaft with petroleum jelly then
slide the pump body onto the shaft.
3. Slide the impeller onto the shaft and with a counter-clockwise motion push the impeller
into the impeller bore.
4. Position a new paper gasket, wear-plate and second paper gasket on the shaft against
the pump body.
5. Grip the flat of the shaft on the top end of the motor to prevent it from turning.
Install the chopper lock washer and the chopper on the bottom shaft.
6. Position the O-Ring in the O-Ring groove around the discharge port.
7. Slide the macerator housing onto the pump body and secure it with the two shorter
8. Position the discharge flange on the same side of the motor where the wire leads enter
the case and secure the pump assembly to the motor with the two longer screws.
FLUSH PUMP REASSEMBLY:
1. Press the lip seal into the bore of the pump body with the open side of the seal facing
the impeller bore.
2. Lubricate the impeller bore of the body and the motor shaft with petroleum jelly.
3. Slide the pump body onto the shaft and secure it to the motor with two screws. Slide
the impeller onto the shaft and with a clockwise rotary motion press it into the impeller
bore of the body.
4. Push the inlet control valve assembly into the cylinder above the inlet port.
5. Position the switch spring on the spring locator post. Insert the dowel pin in the
switch and slide the pin in its channel to position the switch. Connect the red power
leads to the switch.
6. Press the brass wear-plate into the impeller bore area ensuring the locator notch
aligns with the locator tab in the body.
7. Position the cork gasket over the top of the flush pump housing. Position the flush
pump cover on the housing and secure it with the seven long screws.
Hint: When installing screws, press firmly downward on the screw and rotate it
counterclockwise until you feel the thread "click" into its groove, then screw
it in until tight.
8. Position the control knob in its socket and secure if with one short screw. Install the
Electric Flush Pump Assembly on the toilet base by following instructions for
9. Attach the flush pump to waste pump bleed tube to the lower and upper bleed ports.
Ports: Inlet- 3/4" Hose Barb; Dishrag- Attach manual pump 1 1/2" discharge
Motor: Permanent magnet type with ball bearings on double ended stainless steel
Pumps: Two flexible impeller pumps mounted on
opposite ends of double ended motor.
Weight: 7 1/2 lbs. (3.4 kg)
Dimensions: 10 1/2" (267mm) high. 3-3/8" (86mm) wide. 5 7/8" (149mm) deep,
40" (1000mm) wire leads