Shibuya H2021 - Water Collection and Supply

14
7.5 Shifting the gear
WARNING
Make sure the drill motor is switched off and disconnected from the power supply.
CAUTION
The gear shifting must be done when the motor is completely stopped.
H2021 drill motor has a 2-speed gearbox. “H” is a high-speed range, and “L” is a low speed range.
According to the size or diameter of the core bit attached, a proper gear must be chosen.
Refer to the following table.
NOTE
This table is advisory only. Maximum drilling diameter depends on the hardness of the material to be
drilled.
Drill Motor Model Speed Range Rev. (No-Load) Recommended Drilling Diameter
H2021
H
1050 min
-
1
(100 V)
950 min
-1
(110-120 V)
1200 min
-1
(220-240 V)
Less Than 120 mm (5”)
L
470 min
-
1
(100 V)
450 min
-1
(110-120 V)
550 min
-1
(220-240 V)
120 mm to 250 mm (5” to 10”)
For the gear shifting procedure, refer to the following.
1) Pull out the gear change knob.
2) Shift it to your desired position.
3) When the shifting is completed, the knob will be pushed back. Ensure that the knob is pushed
back to the position before proceeding to the next step.
NOTE
If the gear does not shift well, shift the gear while rotating the spindle by hand.
7.6 Setting a water collection ring
WARNING
 Make sure the drill motor is switched off and disconnected from the power supply.
 Refer to the manual of the water collection ring.
Follow the procedure below.
1) Place a water collection ring.
2) Pull the beams.
3) Slide the beams on the ring.
4) Release the beams on the ring.