Linea Rotobomba 500T0800 Owner'S Manual Download Page 5

Electrical / Operation

5

To change or check tank pre-charge pressure:
1. Turn off power to the pump.
2. Close the suction line valve from the storage tank.
3. Open a faucet to drain pressure from the tank.
4. Use an air pressure gauge (same as used on automo-

bile tires), and check the air pressure from the air fit-
ting on top of the tank.

The tank pre-charge pressure should always be 0.138 Bar
(2 PSI) 

less than the cut-in (start) pressure (see Table I,

Page 4).

Changing Pressure Switch Settings 

The pressure switch is pre-set to 2 / 3.4 Bar (30 / 50 PSI).
The pressure cut-off (pump-stop pressure) can be
changed if required. 
To change cut-off (pump stop) and cut-on (pump start)
pressure together:
1. Turn off power to the pump.
2. Remove the cover to the pressure switch.

3. Turn pressure-adjustor #1 clockwise to increase both

cut-off and cut-in pressure. Each turn will change the
pressure setting 0.17 Bar (2.5 PSI). Turn the adjustor
counterclockwise to lower the pressure setting.

4. To raise only the cut-off pressure, turn pressure adjus-

tor #2 clockwise. Each turn will change the pressure
setting 0.17 Bar (2.5 PSI). Turn the adjustor counter-
clockwise to lower the pressure setting.

Checking Pressure Adjustment

1. After changing the pressure setting, put the cover on

the pressure switch.

2. Apply power. 
3. If the pump does not start up, open a faucet to drain

water from the pressure tank. 

4. Watch the pressure gauge and note at what pressure

the pump starts. 

5. Close the faucet.
6. Watch the pressure gauge and note at what pressure

the pump stops.

7. If additional adjustments need to be made, refer to

the previous procedure.

PRIMING / OPERATION

Never run pump dry

. Running pump with-

out water may cause it to overheat, damaging the seal
and possibly causing burns to persons handling the
pump. Fill the pump with water before starting.

Never run the pump with the discharge

closed. To do so can boil water inside the pump, causing
hazardous pressure in the unit, risk of explosion, and
possibly scalding persons handling the pump.

Cistern Installation

1. Remove the priming plug from the priming port. Fill

the pump from the tee and let it vent through the
port. Fill all piping between the pump and the water
source and make sure that all vertical suction piping
is full. 

2. Replace all priming plugs (use teflon tape). 
3.

Power on!

Start the pump. If you don’t have water in

2 minutes, stop the pump and remove the fill plugs.
Refill the pump and piping. You may have to repeat
this several times in order to remove all the trapped
air from the piping. A pump lifting water 15’ (4.5m)
may take as long as 15 minutes to prime.

Attach Po

w

er

W

ires Here

Press

u

re

Adj

u

stor #1

Press

u

re

Adj

u

stor #2

Attach Gro

u

nd

W

ire Here

Figure 4 – Pressure Switch.

Priming 
Tee

Figure 5 – Prime the Pump.

Summary of Contents for Rotobomba 500T0800

Page 1: ...er operating installation or maintenance assistance Call 1 262 728 5551 2006 RPX797 Rev 4 4 06 OWNER S MANUAL Household Water Pump System Models 500T0800 and 500T1000 293 Wright St Delavan WI 53115 Ph...

Page 2: ...uttered and properly lighted store properly all unused tools and equipment Keep visitors at a safe distance from the work areas Pump body may explode if used as a boost er pump unless relief valve cap...

Page 3: ...the tinaco to the inlet of the pump This line must be without leaks and the same size or larger than the pump inlet size 3 Install a shut off valve in the suction line from the tinaco This will allow...

Page 4: ...own Either wire can connect to either terminal 4 Attach the pressure switch cover Checking Tank Pressure The pressure tank is pre charged with air pressure This must be adjusted when first installed a...

Page 5: ...Apply power 3 If the pump does not start up open a faucet to drain water from the pressure tank 4 Watch the pressure gauge and note at what pressure the pump starts 5 Close the faucet 6 Watch the pres...

Page 6: ...he system by running it through one complete pumping cycle to make sure it works To do this open a faucet and bleed off pressure until the pump starts Close the faucet and when the pressure in the sys...

Page 7: ...be needed over 16 5M to water setup to deliver water to deliver water Pump does not Water level in well is lower than A deep well jet will be needed if your well is more than 16 5M deliver water to fu...

Page 8: ...tionary 1 111P0510 111P0510 6 Impeller 1 101P1150 101P1150 7 Diffuser 1 101P0710 101P0710 8 O Ring 1 111P0490 111P0490 9 Venturi 1 101P0740 101P0740 10 O Ring 1 111P0560 111P0560 11 Nozzle 1 101P0720...

Page 9: ...496SRS Key Part No 19 Gallon 35 Gallon No Description Used Tank Tank 1 Bladder Vinyl 1 U20 13 U20 9 2 Cover Flange 1 U31 446P U31 446P 3 Flange Nut 3 U36 202BT U36 202BT 4 Air Valve with Cap 1 U212 16...

Page 10: ...ts at PENTAIR WATER s choice Buyer agrees to pay all labor and shipping charges associated with this warranty and to request warranty service through the installing dealer as soon as a problem is disc...

Page 11: ...funcionamiento instalaci n o mantenimiento de la bomba Llame al 1 262 728 5551 2006 RPX797 Rev 2 13 06 MANUAL DEL USUARIO Sistema de bomba de agua para el hogar Modelos 500T0800 y 500T1000 293 Wright...

Page 12: ...os visitantes a una distancia segura de las reas de trabajo El cuerpo de la bomba puede explotar si se utiliza como bomba de sobrepresi n a menos que se instale una v lvula de desahogo que sea capaz d...

Page 13: ...ta l nea no debe tener fugas y debe ser del mismo tama o o m s grande que el tama o de la entrada de la bomba 3 Instale una v lvula de cierre en la l nea de aspiraci n del tinaco Esto permitir el mant...

Page 14: ...i n de aire Esto debe ajustarse cuando se instala por primera vez y luego revisarse peri dicamente El interruptor de presi n est preestablecido a 2 3 4 bar 30 50 PSI La presi n de carga previa del tan...

Page 15: ...ne en funcionamiento abra un grifo para drenar el agua del tanque de presi n 4 Observe el indicador de la presi n y verifique a qu pre si n se pone en funcionamiento la bomba 5 Cierre el grifo 6 Obser...

Page 16: ...se deber detener NOTA Inspeccione el sistema haci ndolo marchar por un ciclo completo de bombeo para verificar su funcionamien to Para hacerlo abra un grifo y descargue la presi n hasta que la bomba s...

Page 17: ...ocasionando una fricci n excesiva El tama o de la tuber a es muy peque o Punto filtrante obstruido Se necesitar un chorro para pozos profundos si la profundidad de su pozo es mayor que 16 pies 5 m al...

Page 18: ...7 Difusor 1 101P0710 101P0710 8 Anillo o 1 111P0490 111P0490 9 Venturi 1 101P0740 101P0740 10 Anillo o 1 111P0560 111P0560 11 Boquilla 1 101P0720 101P0720 12 Anillo o 1 111P0480 111P0480 13 Rolanda 4...

Page 19: ...ue de tanque de N de la Parte Cant 20 galones 30 galones 1 cisterna 1 U20 13 U20 9 2 reborde de la cubierta 1 U31 446P U31 446P 3 tuerca del reborde 3 U36 202BT U36 202BT 4 v lvula de aire con tap n 1...

Page 20: ...ar los pro ductos defectuosos a juicio de PENTAIR WATER El comprador acepta pagar todos los cargos de mano de obra y de env o asociados a esta garant a y solicitar el servicio bajo garant a a trav s d...

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