REFCO RL-8 - Manual (Page 3)

REFCO Manufacturing Ltd. Telefon +41 41 919 72 82
Industriestrasse 11 Telefax +41 41 919 72 83
6285 Hitzkirch - Switzerland [email protected] www.refco.ch
REFCO Manufacturing Ltd. Telefon +41 41 919 72 82
Industriestrasse 11 Telefax +41 41 919 72 83
6285 Hitzkirch - Switzerland [email protected] www.refco.ch
The vacuum pump is supplied without oil filling. Prior to the first
operation the vacuum pump must be filled to half level of the oil sight
glass (Pos. 20) with the oil provided (DV-44/DV-45). The oil is being filled
in through the port of the oil mist filter (Pos. 19).
Only fill oil up to half level of the oil sight glass. Refit the oil mist
filter (Pos. 19) after filling.
Remove the flare cap from the intake port to start the pump (with
model RL-8 also turn the ball valve to open position). Connect the
charging hose to the intake port as soon as the pump motor
reaches full speed.
Running the pump without being connected to a system and pulling
vacuum will result in extensive exhaust of oil mist through the oil
mist filter.
Carry the vacuum pump on the designated handle only.
Keep the pump levelled and secured during transport to avoid oil
spillage. Oil spillage could cause damage to the electric motor.
Electric data
The electric data is mentioned under „technical data“ on page 9 of this
manual.
Technical description
The REFCO vacuum pumps RL-2, RL-4, RL-8 are rotary vane type
vacuum pumps. The pump is cooled internally by a mechanical impeller
during operation. A fitted oil mist filter allows oil back flow into the oil
circulation system of the pump head. The gas ballast valve prevents the
build-up of condensation inside the oil box and the pump head. The
motor is protected by a thermocouple which turns the pump off
automatically if overheated.
Caution! The motor will restart automatically after a cooling period
of approximately 20 minutes.
Contents of delivery of standard execution RL-2, RL-4, RL-8
• Vacuum pump oil DV-44/DV-45
• Instructions of use
The RL-8 is in addition equipped with a ball valve to isolate the pump
from a system.
The pumps are supplied without oil filling. The must be filled with
the oil provided prior to the first operation.
Option: Intake port with anti-back flow to prevent oil sucks back in case
of an accidental shut off of the pump or power cut.
Intake port with back flow prevention:
For RL-2:
RL-2-307-RS 4663786
For RL-4: RL-4-307-RS 4663336
For RL-8: RL-8-307-RS 4664244
Other accessories
Vacuum gauge with ball valve:
For vacuum pumps RL-2, RL-4, RL-8:
RL-VAC 4663981
Special hose to vent combustible refrigerant from closed
environments:
Available for RL-2, RL-4:
10859-CL-197-Y-SP 9881865
Note
Please note the minimal operating temperatures for the vacuum
pumps are described under „technical data“ on page 8 of this
manual. If the environmental temperatures are below the minimal
rates the pump may take several seconds or minutes until the motor
runs on full speed and the pump can develop its full capacity.
Always turn off and disconnect power before moving or servicing
the REFCO vacuum pumps.
The vacuum pump and especially the front cover can reach
temperatures of up to 70°C/160°F during operation.
Check the appropriate oil level (half level of sight glass) and make
sure that there is enough oil. Should the oil be cloudy, dark or
contaminated, or should the oil level have increased without refilling,
change the oil immediately.
Ensure that the air intake of the impeller fan at the back of the pump
is not covered with any objects or cloths etc. Preventing the air flow
through the pump can lead to an automatic motor shut off by the
thermo couple.
Caution! Automatic restart after cooling time of approx.
20 minutes.
Service/Oil change
The main service point of a vacuum pump is the oil. Vacuum pump
oil must be changed at least after every 20 hours of service or
whenever the oil in the sight glass is cloudy or dark. The oil must be
changed immediately after an evacuation of a heavily contaminated
system. Residue of moist/water in the oil may cause corrosion and
damage to the vacuum pump.
Contaminated oil may damage the vacuum pump.