Torque Limiter Adjustment; Replacing Cable - RIDGID K-400 Manual Del Operador

K-400 Drain Cleaning Machine
not operate drain cleaner with belt guard
removed.
2. Hold the belt tensioner to the side and
remove the belt from the drum and pulley.
(See Figure 17 .) Slide the belt to the front
of the machine near the front bearing
mount.
3. Remove the bolts and nuts holding the
front bearing mount and AUTOFEED (see
Figure 5) in place. Pull the drum and front
bearing mount forward enough to slide
the belt off the machine, between the
front bearing mount and the frame.
4. Reverse procedure to replace belt. If
changing belt, adjust torque limiter as
described below.

Torque Limiter Adjustment

The K-400 Drain Cleaner is equipped with a
torque limiter to help prevent cable damage
from flip over in the drum.
The torque limiter causes the belt to slip when
the torque exceeds a set value. The torque lim-
iter is set at the factory, and in most cases will
never need to be adjusted. If excessive belt
slippage is experienced during use, this proce-
dure can be used to check and adjust the
torque limiter setting. Additionally, if the belt is
changed, the torque limiter will need to be
checked and adjusted.
NOTI E Do not adjust the torque limiter out-
side of the specified range. Setting the torque
limiter outside of the specified range could
result in damage to the machine and cable.
1. Remove belt guard by removing hold
down screws located next to motor.
2. Check the gap between the torque limiter
spring coils near the middle of the spring.
(See Figure 17 .) This can be measured
with a set of feeler gauges.
3. The torque limiter is properly set if the
gap is 0.048" (1.22 mm) to 0.060" (1.52
mm), about the thickness of a U.S. dime.
If the gap is within this range, the torque
limiter is properly set and no adjustment is
necessary.
4. If torque limiter is outside of acceptable
range, the torque limiter must be adjusted.
5. Loosen screw located in the center of
hex knob approximately 3 turns.
6. Pull the hex knob out slightly. If the gap
needs to be increased, rotate the knob
clockwise to the next flat of the hex knob.
16
If the gap needs to be decreased, rotate
counter-clockwise to the next flat of the
hex knob.
7 . Repeat steps 2-5 until the spring coil gap
is correct.
8. Tighten the hex knob screw.
9. Replace the guard. Do not operate drain
cleaner with belt guard removed.
Gap
Hex Knob
Cable Clamp
Screws
Figure 17 – Torque Limiter Adjustment. (Shown
With Belt Guard Removed)

Replacing Cable

To Remove Cable From Drum
1. Pull out excess cable from drum allowing
access to cable bracket.
2. Loosen screws on back of drum that fas-
ten cable clamps (Figure 17) and back
plate against back wall of drum.
3. Pull end of old cable from drum and dis-
card.
To Install Replacement Cable
1. To make cable installation easier, com-
pletely uncoil new cable before proceed-
ing. Use caution when removing the cable
from the package. The cable is under ten-
sion and could strike the user. Adding a 30
degree bend about 4" (100mm) from the
drum end of cable will facilitate it entering
the drum.
2. Insert about 24" (0.8m) of cable through
the guide tube into the drum. Cable
should coil into the drum in a count er-
clockwise direction (Figure 18).
Belt
Tensioner