Maintenance, Errors, Repair
REFLECTA/1
Page D7
Mounting & Operations Manual
Replacement of the Bottom Glass
1. Place the compass upside down on a horizontal, plane and solid surface. Caution: do not lay down the
compass on its protruding centre pivot! Use a plate (e.g. cardboard) of approximate 10 mm thickness as
suporting surface with hole for the centre pivot.
2. First unscrew weight ring and then lower cover ring. Mark the orientation of both.
3. Remove the rubber gasket.
4. Take the defective bottom glass with a small screw driver and lift up the glass at its edge. Insert the new
glass which must be centric to the bowl.
5. Complete the compass and fill in fluid. Refer to paragraph: “Filling the compass“.
Replacement of Gaskets.
1. For replacement of upper gasket proceed as described in the paragraph “Replacement of cover glass“.
2. For replacement of lower gasket proceed as described in the paragraph “Replacement of bottom glass“.
Filling the Compass
1. Place the compass so that the filling screw is upside. Unscrew the filling screw with screw driver of 12 mm
and complete fluid. In case larger quantities are needed use only original compass fluid #39012. Smaller
quantities up to 5 cm
3
can be completed with Ethanol or distilled water. Medical syrings are suitable to
complete the fluid.
2. Close the compass with the filling screw. Use a new gasket.
3. To ensure the tightness of the compass cool it to -30°C and keep it approximately 8 hours at this
temperature. If there is no bubble in the fluid after this time the compass should be in order.
Replacement or Dressing of Gimbal Ring
1. Use a pipe wrench for removal of the external gimbal trunnions. For that cover the trunnion with emery paper
to keep its surface smooth and to prevent slipping of the pipe wrench.
2. Remove the internal gimbal trunnions by use of a screw spanner of 17 mm.
3. Now dress the gimbal ring with a light rubber hammer after having it separated from the compass bowl. The
slack must be less 0.2 mm.
Alterations / Errors reserved
Cassens & Plath GmbH, Kompasshaus, Am Lunedeich 131, 27572 Bremerhaven, Germany, tel. +49 471 4839990 fax +49 471 48399910
www.cassens-plath.de
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