Assembly, Handwheel assembly, Dust ports – Powermatic DDS-237 User Manual
Page 8: Dust collection, Electrical connections

8
Assembly
Handwheel Assembly
1. Slide the post up into the handwheel and
secure with the set screws, as shown in Fig 1.
2. Use a flat head screwdriver to screw the bolt of
the handle as far as it will go into the threaded 
hole of the handwheel, then tighten the hex nut 
down against the handwheel (Fig. 1). 
The handle must rotate freely after tightening 
the hex nut. If the handle is too tight, loosen 
the hex nut and back out the bolt slightly, then 
re-tighten the hex nut. 
3. The handwheel assembly, used for raising and
lowering the conveyor table, is designed to be 
mounted and removed quickly. Set the 
handwheel assembly down into the hole of the 
hood (Fig. 2) and rotate it until it seats itself 
upon the pins of the leadscrew below. 
Note: The handwheel must be removed before the 
hood can be opened. 
Dust Ports
Mount the two dust ports to the top of the hood 
with eight 3/16 x 1/2 screws and eight flat washers 
(Fig. 2). 
Dust Collection
It is strongly recommended that you connect a 
proper dust extraction system to the two 4” ports 
atop the sander. Make sure the capacity of your 
dust collector is at least 1200 CFM. 
Electrical Connections
Electrical connections must be
made by a qualified electrician in compliance 
with all relevant codes. The machine must be 
properly grounded to help prevent electrical 
shock and possible fatal injury. 
A power plug is not provided with the DDS-225 or 
DDS-237 Dual Drum Sander. You may either 
connect the proper UL/CSA listed plug or 
“hardwire” the machine directly to your electrical 
panel provided there is a disconnect near the 
machine for the operator. Consult electrical 
drawings on pages 39-42 for further clarification of 
wiring setup. 
This machine must be grounded. Grounding 
provides a path of least resistance to help divert 
current away from the operator in case of electrical 
malfunction. The green wire is the grounding wire. 
Figure 1
Figure 2
Make sure the voltage of your power supply 
matches the specifications on the motor plate of 
the machine. 
Extension Cords
The use of an extension cord is not recommended, 
but if one is necessary, make sure the cord rating 
is suitable for the amperage listed on the 
machine's motor plate. An undersize cord will 
cause a drop in line voltage resulting in loss of 
power and overheating. 
The chart in Table 1 shows the correct size cord to 
use based on cord length and motor plate amp 
rating. If in doubt, use the next heavier gauge. The 
smaller the gauge number, the heavier the cord. 
Table 1
