REFCO RL-8 - Manual (Page 4)

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
Change of oil
• Run the pump until operating temperature has been reached. Turn the
pump of and disconnect from mains.
• Unscrew the oil mist filter (Pos. 19)
• Drain oil through drain plug (RL-4/RL-8 Pos. 23) or through opening for
oil mist filter (model RL-2 does not have an oil drainage plug and the
oil must be drained through opening of oil mist filter).
• Connect pump to the mains again and turn on. Let the pump run for
10-15 seconds with open intake port in order to drain oil residue in the
pump head.
• Turn the pump off and disconnect from the mains.
• Drain possible oil residue.
• Remount oil drain plug (Pos. 23).
• Refill with oil to half level of sight glass.
• Refit oil mist filter (Pos. 19). Let the pump run for a few seconds.
If the oil has been strongly contaminated the oil change procedure
must be repeated after a run time of 30 minutes in order to assure
that all waste particles inside the pump have been washed out with
the oil.
In order to achieve best performance with the REFCO vacuum pumps
only use REFCO oils DV-44, DV-45, DV-46, DV-48 or REFCO ester oil.
Waste oil must be disposed of according to the rules and
regulations which apply in the country of use of the pump.
Further service work than oil change has to be executed by a specialised
company.
Trouble shooting
Condition Possible problem Solution
Pump does not
run on full speed Oil temperature
too low Put the pump in warmer
environment/room
Unsuitable oil – too
thick Change with REFCO oil
Pump dirty Change oil
Motor winding
defective Call customer service
The connection
cable is too long Use a shorter
connection cable
Supply voltage is
too low Pump is designed to
work at +/- 10% of the
supply voltage
Motor does not
start at all Defective capacitor Change capacitor
Call customer service
Switch defective Replace switch
Motor too hot Let it cool down
Cable defective Replace cable
Condition Possible problem Solution
Motor drones but
does not run,
Pump locked up Oil heavily
contaminated Change pump head
Call customer service
Motor runs ⇒ no
performance Broken clutch pin Call customer service
Oil spillage on oil
mist filter Pump overfilled with
oil Adjust oil to half level of
sight glass, drain
additional oil
Extensive oil mist
from oil mist filter Pump pressure =
atmospheric
pressure Oil mist will disappear as
soon as a certain vacuum
has been reached
Oil not visible in
sight glass Not enough oil in
pump Top up with oil
Oil cloudy or dark Contaminated oil Change oil
Not enough
vacuum Gas ballast open Close gas ballast valve
Call customer service
Loose cap on intake
port Screw the cap on tightly
O-ring in the intake
port cap is faulty Replace O-ring
Oil level too low Refill oil
Oil is muddy (cloudy)
or contaminated Change oil
Pipe leaking Check pipe, seal it
Pump is worn out
after lengthy use Repair or replace pump
Motor noisy Bearings worn out
Defective fan
impeller Call customer service
Change impeller
Defective ventilator Replace ventilator
Pump loses oil Leaking gasket of oil
box Change O-ring
Oil draining screw
leaking Replace oil draining
screw
Leaking gasket of
sight glass Change sight glass
Leaking gaskets box
screws Change gaskets of oil of
screws
Leaking shaft seals Call customer service
Warranty
REFCO grants a 24 month warranty period. Damage caused due to
improper use, lack of service as described in this manual, use of the
pump for other applications as the designated ones, use of unsuitable
vacuum pump oil or opening and dismantling the pump during warranty
period by the user will lead to loss of warranty. For repairs during the
warranty period the vacuum pump must be returned to the seller at
owners cost.