MMD Equipment 400S-6B1 - Manual (Page 10)

1.Safety
1-7
1.3 Caution during Inspection and Maintenance
Hang a “Now Checking and under Maintenance” tag
Remove the starter key from the starter switch before starting
inspection, and hang up a “Now Checking and under
Maintenance” tag where it can be easily seen. The checker
must keep the key during checking and maintenance.
Remove the negative (–) side cable from the battery.
If the above procedure is neglected, and another person starts
operating the machine during check or maintenance, it could
cause serious injury.
Be careful of high-pressurized air blowout
After stopping the engine, make sure that pressure gauge
indicates 0MPa. Even when the gauge shows 0MPa, open a
service valve and further do not fail to make sure that there is
no residual pressure in the air piping. Then start such a job as
repair and maintenance.
Residual air under pressure will blow off and severely injure
operator. W010
Refilling of compressor oil
When you refill the separator receiver tank with compressor oil,
stop the engine, and make sure that the pressure gauge
indicates 0MPa and there is no residual pressure in it, and then
gradually loosen the oil filler cap for refilling oil.
Note residual pressure in the separator receiver tank could
force both extremely hot compressed air and oil to jet out and
you may be scalded or seriously injured.
H990432
Draining separator receiver tank
After stopping the engine, confirm that the pressure gauge
indicates 0MPa and there is no residual pressure in it, then
open the drain valve gradually to drain the compressor oil.
Note residual pressure in the separator receiver tank could
force both extremely hot compressed air and oil to jet out and
you may be scalded or seriously injured.
W010
SY001