18
EP100 Master Instruction
_____________________________________________________
D00002-C-04
10 MAINTENANCE
10.1 General
The positioner EP100 requires little maintenance.
When replacing components during repair work, the
safety requirements on page 4 must be observed!
10.2 Supply filter replacement
An obstructed supply filter can be replaced. Unscrew
the air supply fitting, remove the filter and exchange
the filter with a new one.
10.3 Removal of electronics unit
Pull off travel indicator
12
. To remove the electronics
unit
40
, loosen the 7 screws at front, see illustration
below.
Lift off electronics unit vertically to top. Disconnect
plugs
41
and
42
(see page 25) from the board. Do not
use tools to remove plugs because components could
be damaged.
Tight-fitting plugs can be easily removed by tilting
them diagonally inward before pulling them off.
Connect plugs
41
and
42
to the new electronics unit
40
and attach the new unit by using the 7 screws at
front (attention with the cables).
10.3.1 Conversion of positioner
Positioner of the EP series consist of identical
mechanical and pneumatic components and
accessories.
A conversion to either a “digital” or “intelligent”
positioner is possible by simply exchanging the
electronics unit.
Procedure:
a) exchange electronics unit, see chapter 10.3
b) mark change on nameplate
c) start-up - see associated master instructions:
Reference to explosion-proof devices:
Conversion of the electronics unit has to be
considered as change to explosion-proof device, and
therefore, only permitted in accordance with country
specific regulations.
Valid in the Federal Republic of Germany: Conversion
to be certified as change according to § 9 ElexV by an
authorized expert.
