GuaRdboX
-
Gd
series
IOM
(
Installation, Operation & Maintenance Manual) 0100-ENG
rev.5
6
Eisenbau s.r.l. a socio unico
Via T.A:Edison, 16 20090 Cusago (MI) Italy
Phone : +390293562116 Fax: +390293567735
Guardbox production unit : Via XXIV Maggio, 13
25017 – Sedena di Lonato (BS)
Phone : +390309131240 Fax: +390309130946
www.eisenbau.it
www.guardbox-ex.com
7.10
Make sure that the box is connected to the ground with the proper screw (3) using a ground cable with a suitable section
7.11
For switch adjustment and cams (5) setting, please refer to following section
(8. Switch and cam setting).
7.12
Check the cams (5) position before replacing the box cover (7).
7.13
attention
! :
During the steps of removal and adjustment it is possible that the cover gasket moves from its
operating position. Verify that it is in the seat during assembly because the incorrect positioning of the gasket may cause
malfunctions in the box.
7.14
attention ! :
body and cover in the aluminum version, have a protective conductive coating against corrosion on the
flamepaths. Do not apply any kind of grease on the flamepaths, this may cause the accumulations of dirt or particles that may
increase the maximum constructional gap, prescribed by normative, between box body and cover, compromising the
flameproof protective method.
7.15
Replace the cover (7) making sure that the orientation of the position indicator (10) is correct. If the cover (7) is hard to engage
on the box shaft, the indicator (10) could have moved during box cover
’s opening. Use a phillips screwdriver to match the 3D
indicator slot with the box shaft, than reassemble the cover (7).
7.16
Fasten the six captive screws (8) using a torque of 20Nm.
8.
Switch and cam setting:
note !:
Cams are factory presetted in order to operate in a box installed parallel (See section
6.
Mounting)
to CCW
rotating actuators (Normal acting). The lower cam (1) is regulated to operate the switch in the full CW position, when the process
valve is
closed
. The cam above (2) is regulated to operate the switch in the full CCW position, when the process valve is
open.
All installation are suitably accompanied by dedicated instructions, due to the size of the installed sensor, cams may have
the opposite regulation.
Some applications moreover require the use of additional or special cams. These cams, placed above the
cam (2), can be set for signaling intermediate positions or as a redundant signaling of valve
open
or
closed
. Where
necessary, will be provided dedicated additional instructions for the proper setting of the special cams or electrical components.
Following table represent the main cam configurations divided by specific type of switch, for applications not represented below,
please refer to additional instructions provided inside the box packaging:
Cam easy adjustable regulating system
ES / ED
(electromechanical
spdt/DPDT)
Board assembly
Turn the actuator pinion full CW
and regulate the cam till the
switch (1) is activated
Turn the actuator pinion full CCW
and regulate the cam till the
switch (2) is activated
Engaged cams
released cams
No tool is required for
the regulation of the
cams.
a) Push the button (3) with the
finger up to disengage the cam
from its retaining seat (6), rotate
CW the button until it stops, then
release. Now the cam is free to
rotate on the shaft (5). Retaining
spring (4) prevent the cams to lift
up during regulation.
b) Rotate the cam till reaching the
correct operating point
c) Push the button (3) with the
finger up to disengage the cam
from its retaining seat (6), rotate
CCW the button until it stops, then
release. Now the cam is setted
and locked on the shaft (5).
