Operation; Access To Controls; Volume Control (10J Cu1-S Units Only); Flash Rate Adjustment (Dc Supply Units Only) - Eaton CU1 Manuel Technique

Sounder and Xenon Beacon - CU1
English

4.0 Operation

The operating voltage of the unit is stated on the unit label.
General arrangement
ALL DIMENSIONS ARE IN MM

Access to controls:

The volume control, flash rate selection (where available)
and tone selection can be accessed through the lens
cover assembly.
Unscrew the socket set screw (2mm A/F hexagon key) in
the lens cover three full turns. Unscrew and remove the
lens cover. The required adjustments can then be made
using the correct PCB mounted controls.
Once the required adjustments have been made, replace
the cover using the same procedure as above but in the
reverse manner. Care must be taken to avoid damage to
the threads and mating faces of the cover and enclosure.
Ensure the o-ring is correctly seated on the cover and that
the cover is screwed down tightly such that the maximum
gap between the cover and enclosure is 0.2mm. Ensure
the socket set screw in the cover assembly is fully
tightened to secure the cover assembly on the body.

Volume control (10J CU1-S units only):

The volume on both the AC and DC units can be controlled
by means of a potentiometer (VR1) mounted on the top
face of the xenon PCB. Maximum volume is obtained by
2
Technical Manual for The coMbined Sounder and Xenon beacon – cu1 TM207 May 2020 www.eaton.com
30° 30°
30 ±1 30 ±1
320 ±3
CERTIFICATION LABEL
32 ±1
FIXING HOLE
Ø 13 ±1
FIXING HOLES
Ø 9 ±1
2 POSITIONS
turning the potentiometer fully clockwise. Conversely,
turning the potentiometer in an anti-clockwise direction
will reduce the volume until no sound will be heard. Do
not attempt to adjust the potentiometer beyond its limits
as this may cause damage and prevent correct operation
of the unit.

Flash rate adjustment (DC supply units only):

The flash rate can be selected by means of a jumper
switch mounted on the top face of the xenon PCB
accessible through the xenon cover assembly (see the
access to controls section for details). Three positions are
available for selection (SP , F80 & F120) which provide the
following fpm (flashes per minute) rates:
SP – 60 fpm (Standard unless otherwise specified when
ordering unit)
F80 – 80 fpm
F120 – 120 fpm
The flash rate of the AC units is preset by MEDC prior to
shipping and cannot be adjusted once set.