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Page 161
STAT
IM 2000/2000S
Service Guide
96-106775 Rev 5.0
8. Water Pumps, Reservoir, and Compressor
STAT
IM
5000/5000S/5000 G4 Service Guide
Pumps, Reservoir, and Compressor
Water Pumps
STAT
IM units have been manufactured using three different pumps. Before servicing, you must
first determine which model of pump the unit contains (See Figure 1).
Important Note:
Always make sure that there is sufficient steam-process distilled water in
the reservoir prior to testing STAT
IM pumps.
Identifying Pump Types
Fluid-o-Tech Pump
The Fluid-O-Tech pump is generally factory fitted to older units with
revision 3.x/4/x controller boards up to approximately 1994-1995.
It is a small rectangular pump with a diode plug attached to the
top. The pump rests on a vibration-damping pad on the bottom of
the chassis and is held in place with a wire bracket. The pump is
secured to the bracket by a cable tie at each end. The black lead
is attached to controller board J1-5 (LINE) and the white lead is
attached to controller board J1-6 (NEUTRAL).
SciCan Pump
The SciCan pump is generally factory fitted to units with revision
2.x/5.x/6.x and some early 7.x controller boards from 1995 up
to mid 2008. It has a similar footprint to the Fluid-O-Tech pump,
however the diode is now integrated into the pump. The pump
is mounted on two vibration damping rubber brackets. Each
bracket is secured to the chassis with two screws. The black lead
is attached to controller board J1-5 (LINE) and the white lead is
attached to controller board J1-6 (NEUTRAL).
ulka Pump
The Ulka pump is factory fitted to units with revision 7.x controller
boards only from mid 2008 onwards. It is slightly smaller than
the SciCan pump and can be identified by the configuration of
the wires on top of the pump. The two visible connections are
located adjacent and parallel to each other whereas the two visible
connections on the SciCan pump are opposing each other and
have a thermal switch connecting them. The pump is mounted on
two vibration damping rubber brackets. Each bracket is secured
to the chassis with two screws. The black lead is attached to
controller board J1-5 (LINE) and the white lead is attached to
controller board J1-6 (NEUTRAL).
Note:
Important information on pump interchangeability:
Figure 1