Oras 7483, Installation And Maintenance Manual

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General

This Installation and Maintenance Guide introduces the operation, installation, maintenance and use of the Oras 

7483/7491/7492/7493/7494 thermostatic faucet. Please read the instructions carefully prior to installation 

and save them for reference where servicing may be needed. If any fault or malfunction occurs in the faucet, 

seek the best possible advice at an expert HVAC store.

Operation

Oras 7483/7491/7492/7493/7494 is turned on and off from the flow control knob, which is the lower one. The 

temperature adjustment knob above is equipped with a stop button. The limit can be passed by simultaneously 

pressing the stop button and turning the knob. Temperature is factory preset to 38°C.

Installation (figure 1)

–  Hot water is connected to the left and cold water to the right.

  Incoming water must not be cross-connected!

Temperature adjustment (figure 2)

–  Pull off the temperature adjustment knob.

–  Turn on the water.

–  Adjust water temperature as required by turning the temperature adjustment knob.

–  Press the knob back in place so that the stop button is against the limiter shoulder (faces up).

Cleaning/changing the litter filters (figure 3)

–  Close the water inlet to the faucet.

–  Unscrew the litter filters.

–  Clean the litter filters. If necessary, change for new ones.

–  Remount the faucet in the shower cubicle.

–  Open the water inlet to the faucet to check that the faucet works correctly.

Changing the headpart (figures 4)

–  Close the water inlet to the faucet.

–  Pull off the flow control handle.

–  Unscrew the plastic nut.

–  Unscrew the headpart from the faucet body (17 mm wrench).

–  Position the new headpart in place.

–  Reassemble in reverse order.

Servicing the thermostatic element (figure 4)

–  Close the water inlet to the faucet.

–  Pull off and detach the temperature adjustment knob and limiter. Use SW 38 mm box wrench (e.g. Oras  

  box wrench no. 910003) or open-end spanner to unscrew the grooved locking nut. 

–  Pull out the thermostatic element.

–  Clean the element and its filters under running water using e.g. a soft brush.

  The element must be replaced if damaged.

–  Lubricate the O-rings with silicone lubricant and replace the element in the faucet.

–  Screw the grooved locking nut back in place.

–  Place the limiter back over the stem so that the limiter shoulder is in line with the 38° mark on the faucet  

  (see figure 4).

–  Remount the temperature adjustment knob, open the water inlet, check for faultless operation and adjust  

  the temperature if required.

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