Multiquip CDM2CSA - Manual (Page 15)

DM15A9C/CDM2CSA — OPERATION AND PARTS MANUAL — REV. #1 (11/09/05) — PAGE 15
Figure 4. DM15A9C Core Drill Motor
DM15A9C/CDM2CSA — CORE DRILL MOTOR COMPONENTS
1. Speed Adjustment Knob – Use this knob to adjust
the speed of the electric motor. Turn knob counter-
clockwise to loosen. Push knob toward shaft end to
decrease motor speed. Pull knob back towards ON/
OFF switch to increase motor speed. Once knob is in
desired position, lock in place by turning fully clockwise.
2. AC Power Cord – Plug this 16 ft. (4.87 meters) power
cord into a 115 VAC grounded type receptacle. NEVER
remove the ground pin from the plug. This will defeat
the ground circuit and greatly increase the possibility
of electrical shock.
3. ON/OFF Rocker Switch– Press this rocker switch to
start and stop the electric motor.
4. Electric Motor Brush Covers (2) – Insert tip of a flat
blade screwdriver into slot on brush cover, turn counter-
clockwise and remove cover to gain access to brushes.
5. Drill Body –The electric motor and associated
components are contained inside the drill body
.
6. Main Shaft – Attach core drill bit to this shaft. Main
shaft is 1-1/4"-7 (7 threads per inch) male. Shaft size
fits most core bits from 1-1/2" through 9" diameter.
7. Adapter Reducer – Multiquip offers (option) a reducing
adapter, 1-1/4"-7 female to 5/8"-11 male for bits smaller than 1-
1/2" diameter.
8. Core Drill Bit– Place bit onto main shaft and tighten
securely. Contact MQ sales department for the core
drill bit that best fits your application.
9. Wrenches – 3 wrenches are supplied with the
DM15A9C electric core drill motor. These wrenches
(17,19, 36 and 46 mm) are used to install and remove
the core drill bits.
10. Water Shut-off Valve – Turn this valve downward to let
water flow and up to stop.
11. Water Tube/Adapter – Connect this tube/adapter to a
water source, typically a garden hose.
12. Core Drill Base/Woodruff key – Attach this base to
the cradle assembly located on the column rack. Align
woodruff key with slot on base of cradle.
Figure 4 illustrates the basic componets of the MQ DM15A9C
Drill Rig. Shown below is breif explanation of each component.