SERVICE MANUAL SERIES 320 XR - Precisa

Series 320 XRAssembling the weighing cellfig. 71278137.2 Assembling the magnet cover and the transport safety device1. Carefully introduce the centring mandril [2/D2] over the balance arm and centre the magnet pot.2. Tighten the 3 screws (30/B2) belonging to the magnet pot and remove centring mandril [2/D2].3. With the aid of the cover fitting tool [4/D2] do with 2 screws (25/B2) carefully fit the magnet cover.4. Pre-assemble the transport safety device (4/B2) with the screw (23/B2) and spring washer (33/B2)→ gently tighten.5. Centring bush (16/D3) shall be introduced between the balance arm-pilot and transportation safetydewice to assure constant annular grap. Tighten screw (23/B2) and remove centring bush.7.3 Assembling the sensor mechanism, the inner cone and the stopper1. Press the sensor mechanism carefully into the cutout in the chassis in the direction of the magnetand secure to the chassis with 3 screws.2. Solder the two connection wires (5/B2) in parallel and strain-free to the connection board.3. Turn back the stopper with brass screw by 90° and screw tight.4. The stopper must be free of play and lie centrally in the symmetry screw → if necessary, re-adjustsymmetry screw.7.4 Assembling the flexure holders1. Introduce the two pins for flexure holder [6] in the first pre-assembled flexure holder (see “Installingthe new flexure sheets” on page E9) in such a way that the shoulder of the pins is opposite thescrew heads on the flexure holder.Precisa Gravimetrics AG Index b2 E12