Xylem Jabsco 31820-0492 Manual De Instrucciones página 4

CAUTION
Pumps have thermal overload protected
motors. The motor will automatically shut off
as temperature rises due to an overload con-
dition. If the motor shuts off in this manner,
turn off electrical supply to pump. After a
cooling off period, re-start pump.
SERVICE INSTRUCTIONS
PUMP DISASSEMBLY
1. Remove power from pump. Open discharge valve to
relieve system pressure.
2. Push port clips back and disconnect plumbing from
pump.
3. Remove the four (4) pumphead screws.
4. Rotate pumphead until cam/bearing set screw is visible
through drain notch.
5. Loosen cam/bearing set screw and slide pump off mo-
tor shaft.
6. Separate upper housing, lower housing, and check
valve assembly as required.
PUMP ASSEMBLY
1. Install new outer piston in lower housing with piston
tops pointing away from motor.
2. Install new diaphragm in lower housing with the mold-
ed O-ring seals facing away from motor.
3. Insert each inner piston through the diaphragm into
outer piston.
4. Turn each piston until fully seated.
5. Secure cam/bearing assembly to outer pistons using 18
inch pounds (2.0 Nm) of torque.
6. Slide lower housing on motor shaft. Align set screw with
motor shaft indentation.
EXPLODED VIEW
Vue éclatée / Explosionszeichnung / Vista esplosa / Explosietekening / Sprängskiss / Vista explotada
7. Set screw MUST be positioned over shaft indentation
and secured tightly.
8. Check that ferrules are installed in upper housing and
O-ring is properly seated.
9. Install check valve assembly in upper housing and fit
upper and lower housings together.
Align pumphead with motor and tighten four (4) screws
10.
evenly using 25 inch pounds (2.8 Nm) of torque.
SWITCH REPLACEMENT
1. Remove power from pump. Relieve system pressure.
Disconnect inlet and outlet hoses.
2. Remove pressure switch cover and disconnect power
leads from switch.
3. Remove switch and switch diaphragm from pump by
removing two (2) switch mounting screws.
4. Replace switch diaphragm and switch. Reassemble in
reverse order.
5. Do not over tighten switch mounting screws.
OPTIONAL PORT KITS
30649-1004 30653-1004
1/2"-14 NPSM 3/4" Straight
Straight Hose Barb
Thread Viton Viton
Port Kits contain two ports with O-rings
4
30654-1004 30642-1004 30651-1004
1/2" Straight 3/4" Elbow 1/2" Elbow
Hose Barb 90° Hose Barb 90° Hose Barb
Viton Viton Viton