4.
Turn the pump on. The LED lamp (green) lights up.
5.
Open the intake shut-off valve of the pump and the
low side valve of the manifold.
WARNING:
The pump becomes hot during
operation and immediately after stopping. Do not
touch the pump while it is hot. Doing so may result in
burns or other accidents.
NOTE: The motor may not operate when it is cold (5°C
or less). In these cases, bring the pump indoors and
allow it to warm up.
6.
When the specified vacuum (refer to the manual
provided by the air conditioner manufacturer) is
reached, close the low side valve of the manifold.
7.
Close the intake shut-off valve and turn the pump
off.
Airtightness test
There are no leaks if the pressure of the manifold does
not rise for 5 minutes or more after leaving the pump and
manifold.
NOTE: When the battery remaining capacity becomes
low, LED lamp goes out and at the same time a long
alarm beep start sounding. About two minutes later
the motor stops. And then alarm beep changes into a
repeated short-time interval beeping which notifies the
motor stop and 30 seconds later the beeping stops.
However, do not wait until the motor stops (or alarm
beep changes to a short-time beeping), and instead
close the inlet valve of the tool and the low pressure
side valve of manifold.
Check that the pump is turned off, remove the battery,
and charge it or replace it with a spare battery.
•
Refer to the following table for the battery operation
times.
Operation times (guideline)
Battery
BL1850 / BL1850B
BL1840 / BL1840B
•
After finishing work, remove the battery and attach
the supplied cover.
NOTICE:
When transporting, operating and
storing the tool, never place it on its side or upside
down. This may cause oil leakage from the oil filler/
vent cap.
MAINTENANCE
CAUTION:
Always be sure that the pump is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
Operation times
50 min
40 min
8 ENGLISH
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
Checking the oil
► Fig.8:
1. Level line
•
Always
check
the
(deterioration, etc.) before using the pump.
NOTE: Add oil until the oil level is between the upper
and lower level lines of the sight glass.
Replacing the oil
► Fig.9:
1. Intake shut-off valve
1.
Open the intake shut-off valve.
2.
Operate the pump for 1 or 2 minutes to warm up the
oil.
3.
Turn the pump off.
4.
Remove the drain plug and drain the oil.
5.
Refer to "Adding oil" and add new oil.
•
Dispose of the old oil in accordance with local
regulations.
NOTE: It is recommended to change the oil after 20
hours of usage to protect pump components from
contaminants pulled into the pump.
When vacuuming on old refrigeration systems, change
the oil after every usage.
Cleaning the pump
1.
When the oil is extremely dirty, replace the oil and
then operate the pump for 3 to 5 minutes.
2.
Drain the oil and add new oil.
If the drained oil is still dirty, repeat this cleaning
process two or three times.
OPTIONAL
ACCESSORIES
CAUTION:
These accessories or attachments
are recommended for use with your Makita tool
specified in this manual. The use of any other
accessories or attachments might present a risk of
injury to persons. Only use accessory or attachment for
its stated purpose.
2. Sight glass
oil
level
and
condition
2. Drain plug