2 3
1. Marathon Controller
The Gesswein Power Hand 2X Marathon
Controller features a Voltage Selector Switch that
allows operation at either 110V or 220V. Please
check the Selector Switch to ensure it is set at the
proper Mains AC voltage.
Handpiece speed is controlled by the Dial
Rheostat or Variable Foot Rheostat. Before first
use, run the handpiece at half speed without load
for 30 minutes to properly break it in for smooth
operation. It is recommended to turn the unit OFF
before changing handpiece rotation direction.
Front Panel
A. Main Power Switch
B. Power ON and Overload Indicator Lamp.
Turns green when Main Power Switch is ON,
red when handpiece overloads. To reset, turn
Main Power Switch OFF then back to ON.
C. Direct/Remote Switch. Set to HAND when
controlling handpiece speed by Dial Rheostat.
Set to FOOT when using the Variable Foot
Rheostat.
D. Forward/Reverse Switch. Handpiece runs
counterclockwise in FWD, clockwise in REV.
Turn Main Power Switch OFF before changing
handpiece rotation direction.
E. Handpiece Receptacle. For Handpiece
PHP35 or any Gesswein Power Hand 2X
Handpiece.
F. Dial Rheostat. Controls handpiece speed
from minimum to maximum RPM.
Back Panel
A. Variable Foot Rheostat Receptacle –
Depressing Foot Rheostat operates handpiece
at any speed set on dial rheostat or from zero
to maximum speed when dial rheostat is set to
MAX.
Constant Speed Feature: Much like On/Off
Foot Switch, Foot Rheostat can run handpiece
at constant speed. Before beginning operation,
set dial rheostat on controller to desired speed.
With Direct/Remote Switch (Fig. 1, C) set to
FOOT, depress Foot Rheostat fully. Speed will
increase to dial setting and hold steady. For new
constant speed, reset dial rheostat and depress
Foot Rheostat fully. Speed will increase to new
dial setting and hold steady.
B. Voltage Selector Switch – Ensure switch is
set at proper Mains AC Voltage.
C. AC Power Cord and Plug
D. Ventilation Vents
E
F
Fig. 1
A
B
C
D
Front Panel
Specifications
Model Marathon
Input Voltage 110VAC, 50/60Hz
or 220VAC, 50/60Hz
Output Voltage 30V DC or 35VA
Dimensions 110mmW x 148mmD
x 96mmH
Weight 1.6kg (3.5 lbs.)
Fig. 2
A
B
C
D
Back Panel
2. PHP35 Handpiece
Handpiece PHP35 is supplied with a collet and a Test Pin. When not
using the handpiece, leave the Test Pin or a tool in the collet to keep it
in good condition.
Changing Tools
PHP35 has a quick-tool-change mechanism for rapid tool changes. To
change tools, turn the Collet Release Ring fully to the “R” release posi-
tion (fig. 3) until a “click” sound is heard. The collet is then fully open and
ready to accept a tool.
To secure the tool, turn the Collet Release Ring to the “S” secure posi-
tion. Again, a “click” sound will be heard, indicating the collet is fully
closed and the tool is secure.
*Do not turn the Collet Release Ring while the handpiece is running as damage may
occur and the tool can fly loose from the collet.
Collet Removal
To change collets, turn the Collet Release Ring fully to “R,” place the
triangular cutout of the Collet Wrench over the collet (fig. 4), and turn
counterclockwise to loosen or clockwise to tighten. Tighten the collet with
the Collet Wrench until just tight.
A tight collet can be loosened by placing the wrench over the collet and
tapping the wrench with a solid tool (fig. 5).
If the above procedures do not loosen a tight collet, then the HandCap
must be removed. To do so, put the Collet Release Mechanism in the
“S” position, hold the handpiece in one hand, and turn the HandCap
counterclockwise until it separates from the handpiece (fig. 6). The Coil
Spring (Part 114) should remain in the Collet Release Ring.
Insert the Chuck Joint Wrench fully into the Connector (Part 122), hold
the HandCap and Chuck Joint Wrench in one hand, and with the Collet
Wrench in place on the collet, loosen by turning the Wrench counter-
clockwise. Tighten the collet by turning the Collet Wrench in a clockwise
direction until just tight.
Replacing HandCap
To replace the HandCap, screw it into the Collet Release Ring in a
clockwise direction until fully seated.
Check for Proper Collet Installation
Turn the Collet Release Mechanism to “S”, and rotate the collet by
hand. If the collet does not rotate freely, it is not fully seated in the Joint
Shaft (Part 122). Repeat the collet removal-replacement procedure.
Replacement of Carbon Brushes
PHP35 uses a spring tension-type carbon brush assembly (a pair of
brushes is supplied with the Marathon). Expected brush life is 800-
1,000 hours. Worn brushes should be replaced when the handpiece no
longer runs at maximum speed or sounds as though it is “running out
of gas.” It is important that both brushes be replaced at the same time.
Replacement of only one carbon brush will cause motor damage. To
replace worn brushes, unscrew the Carbon Housing Cover (Part 174) in
a clockwise direction (fig.7). Using a small Phillips Screwdriver, unscrew
each brush assembly. The brush tension spring will push the assembly
out of the brush well so it can be lifted clear. The two new carbon brush-
es should be installed by gently pushing them into the brush well. Screw
the assembly in securely, and replace the Carbon Housing Cover.
Collet
Wrench
HandCa
