14 Maintenance Level Functions
Gardner Denver
50
14 Maintenance Level Functions
14.1 Access Security Levels
The menu structure is arranged so that there are two
levels of access security.
14.1.1 User
Level
This enables the compressor operator to change
parameters controlling the everyday operation of the
machine (see chapter 4).
14.1.2 Maintenance
Level
This level allows local maintenance personnel to
change certain additional parameters which are not
available in the user level. It also displays some
additional graphs.
14.2 Unlocking and Locking the
Maintenance Level
14.2.1 To
unlock
1) Touch the “Access Code” tab
and key in the
code
3100
.
2) Touch the appropriate tab for the menu you want to
view/change.
14.2.2 To
lock
3) Touch the “Access Code” tab
and re-enter the
code
3100
.
This will re-lock the system.
Note
The maintenance level will automatically revert to
“locked” 5 minutes after the last key press. However,
the user level will remain unlocked until the user code is
re-entered.
Should maintenance personnel need to access the
menu system, they can do so by pressing the
tab
and keying in the maintenance level code. In this
instance, the padlock symbol on the tab does not
change to an unlocked padlock but instead, a small
figure “2” will appear beside it
. This happens
regardless of whether the padlock symbol shows
“locked” or “unlocked” (as maintenance access level 2
overrides the user level).
On entering the correct access code, the padlock
symbol will disappear from all menu items which are
available to that access level and changes can be
carried out as required.
Maintenance personnel may also change parameters
which were locked for the user level by entering the
maintenance level code.
Some additional views and parameters are available in
the maintenance level:
14.3 Additional maintenance level views
In
Trends
menu
a) Heatsink
Temperature
b) VSD Output Current
c) Discharge
Pressure
d) Discharge
Temperature
e) Line Pressure – Show Targets
f) Water
Level
Note
Water level varies strongly with
systems depending
on the current motor speed.
Touch
or
to move between the different
graphs.
Fig. 46 Line Pressure Graph
When the Maintenance Level access code is entered, a
Show Targets
option button becomes available on
the
Line Pressure
screen.
Touch the button to show the setpoint pressure lines on
the graph. All changes made to setpoints during the
displayed period can also be seen.
