Hitachi H 25PV Technical Data And Service Manual page 22

9-1-6. Wiring of variable speed control switch
Insert each cord into the terminal 1 and terminal 2 of the speed control switch as shown in Fig. 30 and tighten
the screw [tightening torque: 0.6
from the stator ass'y into the terminal M1 and M2. Insert each lead wire (black) coming from the noise suppressor
into the terminals C1 and C2. After insertion, pull each lead wire slightly to check the lead wires do not come off.
To disconnect the lead wires, insert a small flatblade screwdriver into the slots near the terminal and pull out the
lead wires.
9-1-7. Insulation Tests
On completion of disassembly and repair, measure the insulation resistance and the dielectric strength.
Insulation resistance: 7 MΩ or more with DC 500 V megohm tester
Dielectric strength: AC 4,000 V/1 minute, with no abnormalities
AC 2,500 V/1 minute, with no abnormalities
9-1-8. No-load current value
After no-load operation for 30 minutes, the no-load current value should be as follows:
Voltage (V)
Current (A) (Max.)
0.2 N m (6 2 kg cm, 5.2 1.7 in-lbs.)]. Insert each lead wire (black) coming
• •
(1 )
Black or brown
Cord
M2
C1
M1
(M2) Black
Stator
(M1) Black
Stator
(C1) Black
Noise
suppressor
Fig. 30
(and 110 V for U.K. products)
(except U.K. products)
110 230
2.9
--- 19 ---
(2 )
Black or blue
Cord
1 2
C2
(C2) Black
Noise
suppressor
White
220 V --- 240 V
• • •
110 V --- 127 V
• • •
240
1.4 1.3