High Performance Vacuum Pump
Model 15401/15601/15603/15605/15607
Operating Manual .........................................2
Bombas de Vacío de Alto Rendimiento
Modelo 15401/15601/15603
Manuel del Operador....................................8
Pompe à Vide à Haut Rendement
Modèle 15401/15601/15603
Manuel d’utilisation .....................................16
Hochleistungs-Vakuumpumpe
Modelle 15401/15601/15603
Bedienungsanleitung ..................................24
T able of contents
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CoolTech® high performance
vacuum pumps ................................................... 2
Pump components .............................................. 3
Warnings............................................................. 3
Before using your vacuum pump ....................... 4
To use the gas ballast feature ............................ 5
To shut down your pump after use .................... 5
To maintain your high vacuum pump ................. 5
Vacuum pump oil ........................................... 5
Oil change procedure .................................... 5
Cleaning your pump....................................... 5
Motor Lubrication ........................................... 5
Troubleshooting guide ........................................ 6
Failure to start..................................................... 6
Oil leakage ..................................................... 6
Failure to pull a good vacuum ....................... 6
®
CoolTech
Replacement parts ............................................. 7
Warranty coverage ............................................. 7
Out of warranty .............................................. 7
pump specifications .......................... 6
For use on A/C-R systems
using CFCs, HCFCs and HFCs
in conjunction with mineral oil,
ester oil, alkylbenzene oil and
PAG oil as lubricants. Not for
use with ammonia or lithium
bromide systems. Not for use
with flammable refrigerants.
Operating Manual
CoolTech® high performance
vacuum pumps
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Congratulations on purchasing one of Robinair’s
top quality CoolTech
has been engineered specifically for air conditioning and refrigeration service, and is built with
Robinair’s proven offset rotary vane for fast,
thorough evacuation.
You’ll appreciate these key features...
Iso-Valve
Allows the pump to be shut off while still connected to the A/C-R system, which is handy for
checking rate of rise. With the valve handle in the
“Open” position, the pump is open to the system
being evacuated. In the “Close” position, the
pump is isolated from the system. This minimizes
pump oil pulled into the pumping module, making
start-up easier and reducing wear and tear on the
pump components.
High vacuum rating
The two-stage, offset rotary vane design provides
powerful, quiet high vacuum capability and
assures moisture removal, while the high
pumping capacity reduces evacuation time.
Lifetime Filtration
The intake filter prevents foreign matter from
entering the pumping chamber, and an internal
exhaust filter separates oil vapor from the
exhaust flow.
Directed exhaust
The exhaust is expelled through the handle to
direct it away from the service technician.
Gas ballast
A precise amount of atmospheric air is introduced
into the pump, preventing condensation of
moisture vapor and helping maintain the purity of
the pump oil. By using the gas ballast, the pump
operates more efficiently and pump life is
extended.
Sure-grip handle
The one-piece, molded handle makes it easy to
carry the pump to and from job sites, and the
handle stays cool to the touch during operation.
Compact design
Your pump measures approximately 40 cm long,
while aluminum housing and offset rotary vanes
keep the pump weight low, making it easy to
carry.
TM
®
vacuum pumps. Your pump
2
Operating Manual
Pump components
1. Intake Fitting
2. Gas Ballast Valve (located
beside handle base)
3. Oil Fill Port
4. Sight Glass
5. Die-Cast Aluminum Housing
6. Oil Drain
7. Molded Polycarbonate Base
8. Iso-Valve
from the system
9. Powerful, High Torque Motor
10. Power Switch
11. Through-The-Handle Exhaust
12. Sure-Grip Handle
TM
— Isolates the pump
Warnings
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When working with refrigerants, goggles should
always be worn. Contact with refrigerants may
cause injury.
Improper use or connections may cause
electrical shock hazards. Read and follow the
instructions carefully and take precautions to
avoid electrical shock hazards. Be sure that all
associated devices are properly grounded before
energizing circuits.
The normal operating temperature will cause
certain external portions of the pump to be hot to
the touch. Do not touch the pump housing or
motor during operation.
NOTICE: Airborne Noise Emissions
This equipment has been tested for airborne noise emission per
the Council Directive for Machinery (89/392/EEC) Section 1.7.4
Instructions — Essential Health and Safety Requirements.
Sound levels do not exceed 80dB(A) actual value.
3
Before using your vacuum pump
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In all cases, motors are designed for operating
voltages plus or minus 10% of the normal rating
(see SPECIFICATIONS).
1. Check to make certain the voltage and
frequency at the outlet match the specifications on the pump motor decal. Check the
ON-OFF switch to be sure it is in the OFF
position before you plug the pump into an
outlet. Check to be certain the gas ballast
valve is closed. Remove and discard the
exhaust plug from the end of the pump’s
handle.
2. The pump is shipped without oil in the
reservoir. Before starting the pump, fill with
oil. Remove the OIL FILL cap (black plastic
plug directly in front of the handle) and add
oil until oil just shows in the bottom of the
sight glass. The approximate oil capacity of
the pump is 375 milliliters.
3. Replace the OIL FILL cap and remove the
cap from one of the inlet ports. Turn the IsoValve to OPEN. Turn the motor switch to
ON. When the pump runs smoothly, turn the
Iso-Valve to CLOSED and replace the cap
on the inlet port. This may take from two to
30 seconds depending on the ambient
temperature. After the pump runs for
approximately one minute, check the sight
glass for proper oil level — oil should be
even with the sight glass OIL LEVEL line.
Add oil if necessary.
When the pump is running, the oil level should be
even with the line on the sight glass. Underfilling
will result in poor vacuum performance. Overfilling can result in oil blowing from the exhaust.
Your pump is now ready to evacuate air conditioning and refrigeration systems. Follow normal
service procedures and the A/C-R manufacturer’s
instructions for connections to the system.
Operating Manual
CAUTION! Before connecting your vacuum pump
to an A/C-R system, remove refrigerant from the
system in an accepted manner. Damage to the
pump may occur if evacuation is started while
the system is under high pressure. Robinair
recommends use of our Refrigerant Recovery
and Recycling equipment.
Wiring Instructions:
The CoolTech vacuum pump features dual
voltage ranges. Before operating the pump, read
and follow these rewiring instructions (if necessary) to be sure your pump is wired for the
appropriate voltage.
CAUTION! Unplug the unit before beginning
any service work. Improper use or connections can cause electrical shock. Only
qualified personnel should perform service
work.
The CoolTech vacuum pump is factory wired for a
high voltage range of 220 to 250 volts. To wire
the switch for a low voltage range of 110 volts to
115 volts, follow these steps.
1. Disconnect the unit from the AC power
source before proceeding.
2. Loosen the screws on the plate at the rear of
the motor, and carefully move the plate aside
to clear the opening.
3. Disconnect the leads and reconnect for low
voltage, following the diagram and chart.
(High voltage connections are also shown
if you want to rewire at some time.)
4. Check to see that all connections are
secure and that there are no short circuits.
Be sure the grounding connector is properly
connected.
5. Re-install the plate on the rear of motor with
the screws which were loosened in Step 2.
IMPORTANT: Check for short circuits using a
continuity tester before reconnecting to the AC
power source.
4
NOTE: EXTERNAL POWER LEADS ARE ALWAYS
3
2
5
6
1
4
CONNECTED TO TERMINALS 1 AND 4.
- EMERSON -
INTERNAL VOLTAGE CONNECTION
MOTOR
LEAD VOLTAGE
WHITE 4 3
LOW HIGH
3BROWN 6
VOLTAGE
INST0350
Emerson MotorsGeneral Electric Motors
To use the gas
ballast feature
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To maintain your high
vacuum pump
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Moisture from the A/C-R system that is carried
into the pump as a vapor tends to condense into a
liquid and combine with the vacuum pump oil.
When moisture contaminates the pump oil, it
reduces the pump’s ability to reach its ultimate
deep vacuum level.
The gas ballast valve purges a small amount of
atmospheric air through the exhaust chamber.
This extra volume of air mixes with the vapor from
the refrigerant system to prevent condensation
and to help exhaust moisture in the form of vapor
from the pump.
To use the gas ballast, start the pump and open
the gas ballast valve until the system has reached
approximately 1000-3000 microns. Close the
valve to allow the pump to pull down to its
ultimate vacuum level. The gas ballast valve is
located beside the handle, opposite the inlet
fitting.
The gas ballast valve may be opened or closed at
any time during pump operation. It is fully open at
two turns counterclockwise.
NOTE:
Robinair recommends the use of a
thermistor vacuum gauge to most accurately
measure vacuum levels.
To shut down your
pump after use
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To help prolong pump life and promote easy
starting, follow these procedures for shutdown:
1. Close the manifold valve between the pump
and the system.
2. Turn the Iso-Valve to the CLOSED position.
3. Remove the hose from the pump inlet.
4. Turn the pump power switch to OFF, then
return the Iso-Valve to the OPEN position for
a few seconds to relieve any vacuum inside
the pump.
5. Cap the inlet port to prevent any contamination or loose particles from entering the port.
For maximum performance, Robinair recommends
changing vacuum pump oil after each use.
Vacuum pump oil
The condition and type of oil used in any high
vacuum pump are extremely important in determining the ultimate attainable vacuum. Robinair recommends the use of our Premium High Vacuum Pump
Oil. This oil has been specifically blended to maintain
maximum viscosity at normal running temperatures
and to improve cold weather starts.
Robinair Premium High Vacuum Pump Oil is
available in handy quart containers or in convenient gallon containers. Order by part number:
13203 — Quart (shipped 12 quarts per case)
13204 — Gallon (shipped 4 gallons per case)
Oil change procedure
1. Be sure the pump is warmed up.
2. Remove the OIL DRAIN cap. Drain contaminated oil into a suitable container and dispose
of properly. Oil can be forced from the pump
by opening the inlet and partially blocking the
exhaust with a cloth while the pump is
running. Do not operate the pump for more
than 20 seconds using this method.
3. When the flow of oil has stopped, tilt the
pump forward to drain residual oil.
4. Replace the OIL DRAIN cap. Remove the OIL
FILL cap and fill the reservoir with new
vacuum pump oil until the oil just shows at the
bottom of the sight glass. The approximate oil
capacity of the pump is 375 milliliters.
5. Be sure the inlet ports are capped, then turn
ON the pump. Allow it to run for one minute,
then check the oil level. If the oil is below the
sight glass OIL LEVEL line, add oil slowly
(with the pump running) until the oil reaches
the OIL LEVEL line. Replace the OIL FILL
cap, making sure the inlet is capped and the
drain cap is tight.
6. If the oil is badly contaminated, you may need
to flush your pump. To flush, remove the
pump drain cap and start the pump. Slowly
pour a small quantity of new pump oil through
the oil fill inlet.
Repeat this procedure as required until the
contamination is removed. Replace the OIL
DRAIN cap and refill the reservoir to the proper
level with fresh pump oil (see Step 4).
Cleaning your pump
Clean the pump with soap and water only. Do not
use commercial cleaners that contain degreasing
agents that can damage polycarbonates. The
pump handle and base are made of Lexan, one of
the toughest polycarbonate plastics available.
However, it is sensitive to degreasing agents.
*Lexan is a registered trademark of General Electric
Motor Lubrication
After three years of normal service or one year of
heavy-duty service, add oil annually. Use electric
motor oil or SAE 10 oil.
Operating Manual
5
T roubleshooting guide
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Your CoolTech pump has been designed for
dependable use and long life. If something should
go wrong, however, the following guide will help
you get the pump back into service as quickly as
possible.
If disassembly of the pump is required, please
check your warranty. The warranty may be
voided by misuse or customer tampering which
results in the pump being inoperable.
Failure to start
Check the line voltage. Robinair pumps are
designed to start at
o
C. At extremes, however, switching between
0
the start and run windings may occur. When
starting the pump in cold temperatures, be sure
the Iso-Valve and inlet port are open to free air.
Oil leakage
1. Be sure the oil is not a residual accumulation
from spillage, etc.
2. If leakage exists, the module cover gasket or
the shaft seal may need replacing. Follow the
instructions supplied with the seal replacement kit, part number 15367. If leakage
exists in the area of the drain plug, you may
need to reseal the plug using a commercial
pipe thread sealer.
Failure to pull a good vacuum
1. Be sure the Iso-Valve on the pump is in the
OPEN position and the gas ballast knob is
tightly sealed.
2. Be sure the vacuum gauge and all connections are in good conditon and leak-free.
You can confirm leakage by monitoring the
vacuum with a thermistor gauge while
applying vacuum pump oil at connections or
suspected leak points. The vacuum will
improve briefly while the oil is sealing the
leak.
3. Be sure the pump oil is clean. A badly
Operating Manual
contaminated pump may require several oil
flushes. See OIL CHANGE PROCEDURE.
4. Be sure the oil is at the proper level. For
maximum pump operation, the oil must be
even with the OIL LEVEL line on the sight
glass when the pump is running. See OIL
CHANGE PROCEDURE. Do not overfill —
operating temperatures will cause the oil to
expand so it will appear at a higher level than
when the pump is not running. To check the
oil level, start the pump with the inlet capped.
Check the oil level in the sight glass. Add oil
if necessary.
+10% line voltage (loaded) at
U.S Patents 4,523,897; 5,209.653. Other U.S.
and Foreign Patents Pending.
6
CoolTech ® pump
specifications
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Frequency Range ................................... 50-60 Hz
Free Air Displacement ....................... 4 cfm/60 Hz
................................................. 94 l/m @50 Hz
............................................... 113 l/m @60 Hz
Stages................................................................. 2
Motor Speed ............................1425 rpm @50 Hz
............................................1725 rpm @60 Hz
Voltage Range .......................................110-115V
..........................................................220-250V
Factory Micron Rating .........................20 microns
Approximate Oil Capacity ........................... 400 ml
Weight...........................................................15 kg
Width ...................................................... 14.29 cm
Height ....................................................... 24.6 cm
Length .......................................................... 40 cm
Intake ..................................
Min. Starting Temp. (at 90% Voltage)............. 0oC
Motor Size ...........0.25kW (
Operating Temp. ............................................ 68oC
Frequency Range ................................... 50-60 Hz
Free Air Displacement ....................... 6 cfm/60 Hz
............................................... 142 l/m @50 Hz
............................................... 170 l/m @60 Hz
Stages................................................................. 2
Motor Speed ............................1425 rpm @50 Hz
............................................1725 rpm @60 Hz
Voltage Range .......................................110-115V
..........................................................220-250V
Factory Micron Rating .........................20 microns
Approximate Oil Capacity ........................... 400 ml
Weight....................................................... 15.2 kg
Width ...................................................... 14.29 cm
Height ....................................................... 24.6 cm
Length .......................................................... 42 cm
Intake ..................................
Min. Starting Temp. (at 90% Voltage)............. 0oC
Motor Size....... 0.375 kW (1/2 HP) Capacitor Start
Operating Temp. ............................................ 68
Note:
1. All motors are internally protected (automatic
reset).
2. Operating temperatures are typical for
normal operating conditions.
3. Model 15603 has a bipolar side grounded plug.
4. 15405 & 15605 have an Australian plug.
Because of ongoing product improvements, we reserve the right to
change design, specifications, or materials without notice.
Model 15401
1
/2” and 1/4” SAE MFL
1
/3 HP) Capacitor Start
Model 15601/15603/15605
1
/2” and 1/4” SAE MFL
o
C
12
13
14
11
9
8
10
7
6
5
4
15
3
Operating Manual
16
INST0026
Model 15607 Specifications
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Voltage Range 220V
Frequency Range 50 Hz.
Free Air Replacement 142 l/m
Stages 2
Motor Speed 1425 rpm
Factory Micron Rating 20 microns
Approximate Oil Capacity 400 ml
Weight 15 kg.
Width 14.29 cm.
Height 24.6 cm.
Length 42 cm.
Intake 1/2"and 1/4"
SAE MFL
Min. Starting Temp. at 90% Voltage 0oC
Motor Size .37kW (1/2 hp)
Capacitor Start
Operating Temperature 68oC
Replacement parts
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15607/
15605/
15601/
Part Figure 15401 15603
Oil Drain Cap (6) 1 40572 40572
Oil Drain Kit
(includes No. 1) 2 48116 48116
Module Cover Kit
(includes No. 2, 4 and 5) 3 15337 15337
Oil Fill Cap
(includes No. 7) 4 15371 15371
Intake Fitting
(includes No. 9 and 10) 8 15364 15364
Intake Cap (2),
1
/2” SAE MFL 9 41135 41135
17
INST0026
Warranty co verage
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2
1
Robinair CoolTech® vacuum pumps are warranted against defects in material and workmanship for one year of normal use from the date of
purchase. See your distributor for warranty
details.
Out of warranty
A pump which is no longer covered by the oneyear warranty period and which fails to operate
properly should be returned to the distributor with
a full written explanation of the problem. The
distributor may suggest returning the pump to the
factory. Before returning an out-of-warranty
pump, review all maintenance procedures to
avoid an unnecessary return. Replacement parts
are available for doing your own service.
Replacement parts
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15607/
15605/
15601/
Part Figure 15401 15603
Intake Cap (6),
1
/4” SAE MFL 10 41139 41139
Vent Bolt
(includes O-rings) 11 15338 15338
Handle, Power Cord
and Switch Assembly 12 15466 15466
Motor 13 15465 15665
Coupling 14 48103 48103
TM
Iso-Valve
Assembly 15 15368 15368
Base and Foot Assembly 16 15369 15369
Pump Assembly, less motor
(includes No. 3 and 6) 17 15547 15548
Seal Replacement Kit
(not shown) -- 15367 15367
7
Contenido
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Bombas de vacío de alto rendimiento CoolTech®8
Componentes de la bomba ................................ 9
Advertencias ....................................................... 9
Antes de utilizar su bomba de vacío ................ 1 0
Para utilizar el balasto de gas .......................... 11
Para apagar la bomba después de utilizarla.... 1 1
Para mantener su bomba de alto vacío ........... 12
Aceite de la bomba de vacío ....................... 1 2
Procedimiento para cambios de aceite ....... 12
Limpieza de la bomba.................................. 12
Lubricación de motor ................................... 12
Guía para la resolución de problemas ............. 1 3
Fallas de arranque ....................................... 13
Fugas de aceite ........................................... 13
Vacío deficiente ........................................... 13
Repuestos......................................................... 14
Cobertura de la garantía .................................. 14
Período de garantía ..................................... 14
Especificaciones de las bombas
CoolTech
®
......................................................... 15
Para los sistemas A/C-R que
utilizan los CFC, HCFC, y HFC
en combinación con aceite
mineral, aceite de éster, aceite
aiquilbenceno y aceite PAG
como lubricantes. No para uso
con sistemas de amoníaco o
bromuro de litio. No para uso
con refrigerantes combus-
tibles.
Manual del Operador
Bombas de vacío de alto
rendimiento CoolT ech
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Felicitaciones por su compra de una bomba
de vacío CoolTech
Robinair. Su bomba ha sido diseñada específicamente para servicios de aire acondicionado
y refrigeración y está construida con el álabe
rotatorio compensado de la Robinair para tener
una comprobada evacuación rápida y completa.
Ud. va a apreciar estas características...
Iso-Valve
Permite que la bomba se cierre mientras está
conectada todavía al sistema de A/C-R, lo cual
es conveniente para controlar el ritmo de
aumento. Con el mango de la válvula en la
posición “Open,” la bomba está abierta al sistema
que está siendo evacuado. En la posición
“Close,” la bomba está aislada del sistema. Esto
minimiza la cantidad de aceite de la bomba
llevado al módulo de bombeo, facilitando el
arranque de la bomba y disminuyendo el
desgaste de sus componentes.
Alto vacío nominal
El diseño del álabe rotatorio compensado de dos
etapas ofrece una capacidad de alto vacío
poderosa, pero silenciosa, y asegura la
eliminación de la humedad, mientras que la
fuerte capacidad de bombeo reduce el tiempo de
evacuación.
Filtración durante la Vida Util
El filtro de entrada evita que materias extrañas
entren a la cámara de bombeo, y un filtro interno
de escape separa el vapor de aceite del flujo de
escape.
Escape dirigido
El escape se expulsa a través del mango para
dirigirlo en sentido contrario al técnico de
servicio.
Balasto de gas
Una cantidad precisa de aire atmosférico se
introduce en la bomba, previniendo la condensación del vapor de humedad y ayudando a mantener la pureza del aceite de la bomba. Al utilizar
el balasto de gas, la bomba opera con mayor
eficiencia y se extiende la vida de la bomba.
Mango de agarre seguro
El mango moldeado de una sola pieza hace que
sea fácil de transportar la bomba a diferentes
lugares de trabajo, y no se calienta durante la
operación.
Diseño compacto
Su bomba mide aproximadamente 40 cm de
largo, y la caja de aluminio y álabes rotatorios
compensados aligeran el peso de la bomba,
haciéndola fácil de llevar.
TM
®
de óptima calidad de
®
8
Manual del Operador
Componentes de la bomba
1. Conectador de la Entrada
2. Válvula de Balasto de Gas (ubicada al lado
de la base del mango)
3. Puerto para el Llenado de Aceite
4. Tubo Indicador
5. Caja Moldeada de Aluminio
6. Drenaje de Aceite
7. Base Moldeada de Policarbonatos
8. Iso-Valve
9. Potente Motor de Alto Torque
10. Interruptor Eléctrico
11. Escape por el Mango
12. Mango de Agarre Seguro
TM
— aísla la bomba del sistema
Advertencias
○○○○○○○○○○○
Cuando se trabaja con refrigerantes, siempre se
debe usar gafas protectoras. El contacto con
refrigerantes puede causar daños a su persona.
El uso o conexiones inadecuados pueden crear
situaciones de peligro de shock eléctrico. Lea y
siga las instrucciones cuidadosamente y tome
precauciones para evitar estos peligros.
Asegúrese de que todos los dispositivos
asociados estén adecuadamente conectados a
tierra antes de pasar energía a los circuitos.
La temperatura normal de operación hará que
ciertas porciones externas de la bomba se
calienten. No toque la caja de la bomba o el motor
durante su operación.
NOTICIA: Emisiones Aerotransportadas de Ruido
Este equipo ha sido probado para emisiones aerotransportadas
de ruido según la Directiva del Consejo para Maquinaria (89/392/
EEC), Sección 1.7.4 Instrucciones — Requisitos Esenciales de
Salud y Seguridad. El nivel de ruido no sobrepasa el valor
actual de 88dB(A).
9
Antes de utilizar su bomba de vacío
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En todos los casos, los motores están diseñados
para voltajes de trabajo con una variación del
+10% del valor nominal (ver ESPECIFICACIONES).
1. Asegúrese de que el voltaje y la frecuencia
en la salida se conformen con las especificaciones en la calcomanía del motor de la
bomba. Revise el interruptor (ON-OFF) para
asegurar que está en la posición de OFF
antes de enchufar la bomba. Verifique que la
válvula de balasto de gas esté cerrada.
Saque y bote el tapón de escape del mango.
2. La bomba se envía sin aceite en el
reservorio; antes de arrancarla, hay que
llenarlo de aceite. Saque la tapa OIL FILL
(un tapón hecho de plástico negro que está
directamente al frente al mango) y agregue
aceite justamente hasta que aparezca en el
fondo del tubo indicador. La bomba tiene una
capacidad aproximada de aceite de 375 ml.
3. Reemplace la tapa de LLENADO DE ACEITE
(Oil Fill), y remueva la tapa de uno de los
puertos de entrada. Ponga la Iso-válvula en
la posición ABIERTO (Open). Gire el
interruptor de motor a ENCENDIDO (On).
Cuando la bomba funcione suavemente,
ponga la Iso-válvula en la posición
CERRADO (Closed) y reemplace la tapa del
puerto de entrada. Esto puede requerir de
dos a 30 segundos dependiendo de la
temperatura ambiente. Después de que la
bomba funcione por aproximadamente un
minuto, verifique el nivel adecuado del aceite
en el cristal visor — el aceite debe estar
nivelado con la línea de NIVEL DE ACEITE
(Oil level) del cristal visor. Añada más aceite
si es necesario.
Cuando la bomba está funcionando, el aceite
debe estar al nivel de la línea del tubo indicador.
Una cantidad demasiado baja resultará en un
vacío deficiente. Una cantidad demasiado grande
resultará en la salida de aceite por el escape.
Manual del Operador
Ahora su bomba está lista para evacuar sistemas
de aire acondicionado y refrigeración. Para
conectar la bomba al sistema, siga los
procedimientos normales de servicio y las
instrucciones del fabricante.
CUIDADO! Antes de conectar la bomba de
vacío al sistema de A/C-R, elimine el
refrigerante del sistema de una manera
aceptable. Pueden producirse daños en la
bomba si se inicia la evacuación mientras el
sistema está bajo mucha presión. La Robinair
recomienda el uso de nuestros equipos de
Recuperación y Reciclaje de Refrigerantes.
Instrucciones para la instalación
alámbrica del interruptor:
Los bombas de vacío CoolTechofrecen rangos
duales de voltaje. Antes de operar la bomba, lea
y siga estas instrucciones para cambios de
alambrado (si esto fuera necesario) para
asegurar que su bomba esté preparada para el
voltaje apropiado.
CUIDADO! Desenchufe la unidad antes de
iniciar cualquier trabajo de servicio. El uso o
conexiones inadecuados pueden causar
shock eléctrico. Solamente personal
calificado debe realizar trabajos de servicio.
Los bombas de vacío CoolTech vienen de la
fábrica listos para un rango de alto voltaje de 200
a 250 voltios. Para cambiar el alambrado a un
rango de bajo voltaje de 100 a 115 voltios, siga
estos pasos:
1. Desconecte la unidad de la fuente de poder
de corriente alterna (AC) antes de proceder.
2. Afloje los tornillos de la placa en el lado
posterior del motor y coloque cuidadosamente a un lado la placa para despejar la
entrada.
3. Desconecte los avances y reconecte para el
bajo voltaje, siguiendo el diagrama y el
cuadro en la siguiente página. (Las
conexiones de alto voltaje también están
indicadas por si acaso quisiera volver a la
configuración original alguna vez.)
4. Verifique que las todas las conexiones estén
bien sujetadas y que no haya cortocircuitos.
También de que la conexión a tierra esté
bien hecha.
5. Reinstale la placa en el lado posterior del
motor con los tornillos que se aflojaron en el
paso 2.
IMPORTANTE: Antes de volver a conectar con
la fuente de poder, revise para ver si hay
cortocircuitos utilizando un medidor de
continuidad.
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