Place the fastener (8) facing the short end of the Y-shaped base (9).
Place the safety shell (1) over the fastening rib (8) on the base of the viscometer (9).
Place the lower ring in the fastener (8) as explained in the sketch and fasten it with the knobbed
fastening rib (12).
Important:
Do not fasten the stop rings to the fastening ribs (12) too tightly. They are plastic pieces and they can be
damaged. Both stopper rings (upper and lower) look exactly the same and can be changed.
Place the Heldal engine (11) in the fastener (8) while pressing the displacement command (3).
Connect the upper stop ring to the fastener (8) and fasten it with the fastening rib (12).
Insert the viscometer by placing the fastening rib (15) in the Heldel bolt (4) and fasten it with the nut
bolt (14).
Balance the viscometer – Heldal set with the balancing knobs (10).
Fasten the T-shaped spindle (PA to PF samples) to the viscometer. In order to choose the right one,
look at the selection tables (T.3).
-
Screw the counterweight (6.4) in the lower part of the spindle receptor (6.3).
-
Insert the spindle receptor (6.5) between both upper and lower parts of the spindle receptor (6.2
and 6.3). Do not separate these two parts.
-
Fasten the spindle and screw in the lower part of the receptor (6.3) until it is completely fastened.
Important:
Do not fasten the spindle tighter than necessary. There should always be a small hole between both parts of
the receptor.
Fasten the spindle receptor and the spindle to the axis of the viscometer, by connecting the thread.
Place the sample container under the viscometer and insert the spindle into the sample fluid by
pressing the displacement button (3).
The stopper rings limit the vertical movement of the spindle. Therefore, these two rings must be
fastened correctly and in their correct positions.
Important:
Placement of stopper rings as explained here:
Upper ring: the spindle should be kept in the same fluid
Lower stopper ring: The spindle must not touch the edge of the container. If so, the viscometer’s
axle can be damaged and the results can be wrong.
Once the rings are fastened, connect the viscometer and the Heldal to the power point. Switch the
viscometer on and insert the speed and the spindle, as always.
Set the Heldal unit on with the ON/OFF switch (7). Check if the pilot is on. If not, check the main
connection.
OPERATION:
The Heldal unit (which moves helicoidally) is moved up and down between the two stopper rings.
When the engine touches one of them, the unit changes direction.
The Heldal unit will keep moving, until turned off with the ON/OFF switch (7).
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