Koblenz/Thorne Electric U-40 User Manual
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I.-FINAL TEST FOR PRODUCT SAFETY
After repairs the product should be tested on its electrical function and electric strength as follows.
1.-ELECTRIC TEST
1.
Set hi-pot test meter at 1500 Volts
2.
Place the handles tube to “ON” position
3.
Touch one probe of tester to one blade of power cord plug and touch other probe to handle tube,
there should be no breakdown.
2.-OPERATING TEST
Run the machine with the height adjustment knob on high and check:
1.
There should be no unusual noise or vibration.
2.
The carbon brushes spark should be small and uniform.
3.
The current should not exceed 9.0 Amps. and 7.0 Amps
II. REPLACEMENT PROCEDURES
1.-TO REMOVE BAG (8), FIG. 1
1.1.-Release spring, from handle, slide off coupling unit.
2.-TO REMOVE HANDLE TUBE (2, 9) FIG.1 y FIG.2
2.1.-Disengage line cord from hook (5) pulling cord outward from retainer bottom
2.2.-Remove screws and nuts (15 and 7) on handle socket (24) and pull tube out.
3.-TO REPLACE BELT (25), FIG.2
3.1.-To avoid damage on the cover place the upright upward wheels in a soft surface.
3.2.-Remove retaining bar (22) by pressing down on right side (Longest), remove brush rollers cover (23)
and assembly turbine cover (43).
3.3.-Stretch and twist belt over motor pulley to pull it out. (if not broken)
3.4.-Remove complete brush roller (21) with bearing supports (21B and 21E) pulling it out near the bear-
ings.
3.5.- Place new belt on roller, replace roller on chassis making sure the mark "top" on bearings support
faces towards the brush roller cover and reassemble.
4.-TO REPLACE BRUSH ROLL ( 21 ) OR BEARING SUPPORTS FIG. 2.
4.1.-Follow steps 3.1 to 3.4.
4.2.-Remove bearing support (21-B), pulling away from them brush roller (old or new).
4.3.-Place bearing supports on new brush roll, place belt over roll and replace to on chassis following steps
3.5.
5.-TO REPLACE REAR WHEELS (5), FIG.2
5.1.-Remove cover (step 7)
5.2.-Pull security (6) from axle (41) and axle assembly take out.
5.3.-The wheels new replace on the axle.
5.4.-Replace Cover
6.-TO REPLACE FRONT WHEELS (14-I), FIG. 3, 4
6.1.-Remove cover (step 7)
6.2.-Remove screws (7) from axle supports (13) and axle assembly take out.
6.3.-Remove axle with wheels
6.4.-The wheels new replace on the axle.
6.5.-Axle assembly replace on chassis.
6.6.-Replace Cover
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