Cattani 1-cylinder compressor Series Operator'S Handbook Manual Download

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Extraordinary maintenance

To be entrusted to a trained and authorized engineer, provided with original spare parts.

Checks must be regular; their frequency is related to the volume of the surgery work. A
surgery working 8 hours a day, for fi ve days a week, needs one check every three months,
if appliances are watched also by the surgery staff charged with ordinary maintenance.
The engineer charged with the extraordinary maintenance must use original spare parts
only, must not modify the appliances or their functioning, and must not modify any safety
device. In particular he must not carry out any welding on the compressor tank.
Before any operation, consult the instruction manual, split-up drawings, and electrical
diagrams.
Before approaching the compressor, disconnect it from the mains; if the main switch is
far away and cannot be surveyed closely, lock it. On the fi rst check, after some function-
ing of the compressor, the engineer must check that no terminal of the control panel has
loosened and that no overheating signs are visible on terminals and cable connectors.
He must also check that the cylinder screws are not loosened - use a dynamometric key
adjusted at 6 N•m. Ascertain that the compressor gets the set max. pressure at every
charge. Charging time is about 45/55 sec. and the silica gel regeneration and cooling
time is about one third of the charging one.
If the compressor has diffi culty in getting the max set pressure, check the tension on the
line and capacity of condenser. Check the electrical absorption.

At every stop of the compressor a dry-air-reversed-fl ow dries the silica gel; if it is
not so, check or replace the electrovalve (13). If the compressor has diffi culty in
getting the working rate, check the tension on the line and capacity of condenser.
Every six months check the absorption with ammeter pliers. Check for any leak on
the appliance, on the line, and on the dental units.

Check the aspiration value at every cylinder (from 6 to 8 bar): aspirated air must not be
less than 6000 N l/h. Replace burnt bulbs in the control panel, replace fl aming relays
and remote switches and those with worn-out contacts. Do not modify the functioning
or the electrical and mechanical protections. Any change of the running noise can be
a sign of malfunctioning and of a breakdown risk, therefore it is a good rule to replace
noisy heads.
Check the engine room temperature: the air-drying system cannot work properly at
temperatures above + 35 °C.

Always fi ll in the “Extraordinary maintenance” report-sheet.

Notice

• The manufacturer is willing to supply spare parts, technical information and any other

useful information.

• Distributors, agents retailers, and authorized service engineers are supplied with split-

up drawings, electrical diagrams, handbooks and updating, as regards servicing and
maintenance.

• The appliance is guaranteed for 3 years from date of sale, provided that guarantee card

addressed to the manufacturer is returned to the same reporting date of sale, retailer
stamp and customer’s name.

• Guarantee and manufacturer liability cease in case appliances and/or plants are found

tampered by any kind of action performed by unable and thus unauthorised people.

• For any use not contemplated or specifi ed in this handbook please refer to the manu-

facturer.