Maintenance; Safety Devices Check; Carriage Braking Mechanical Safety Locks; Periodical Maintenance - Corghi ERCO 4004 Manual De Uso

6.0 MAINTENANCE

Maintenance operations are listed hereinafter. A lower running cost and a longer machine life depend, among other things, on the constant execution of
these operations.
CAUTION: The listed time schedule is given for information, and relates to standard operating conditions. It is susceptible of
changes based on the type of service, level of environmental dusts, frequency of usage, etc...
In case of heavier conditions, maintenance operations shall be carried out more frequently.
When topping-up or changing oil, always use the same type of oil used before.

6.1 SAFETY DEVICES CHECK

WARNING: The following operations should be carried out with unladen lift.

5.1.1 CARRIAGE BRAKING MECHANICAL SAFETY LOCKS

• Turn EMERGENCY SWITCH DISCONNECTOR /OFF (17, Fig. 1) to 1 (ON).
• Press the UP push-button (20, Fig. 1) and raise the runways of about 1 metre from the floor.
• Place an obstacle (a piece of wood) under the crossbeam close to the control column (3).
• Press the DOWN push-button (21, Fig. 1) and the SAFETY LOCK RELEASE push-button simultaneously (23, Fig. 1) until the runways stop
on the obstacle.
• Check that the lift stops within 150 mm as a result of the limit switch operation activated by the loosening of the relevant rope.
• Repeat the same operations with the other 3 columns. Adjust the limit switches if necessary.
• Press the UP push-button and remove the obstacle.
• Repeat the DOWN operation.
• Check that the wedges (2, Fig. 27 and 28) of the braking mechanical safety locks of each column are in the slots.
• Check that the wedges (2, Fig. 13 and 14) of the fall-prevention mechanical safety locks of each column, since the ropes are loosened, can get into the
slots and that their microswitches (FCx Fig. 19 and 20) have been activated.

6.2 PERIODICAL MAINTENANCE

6.2.1 EVERY WEEK

• Check the safety devices every week as specified in this manual.
• Check the status of the bearing ropes and replace them with original parts if necessary.
• Check hydraulic oil level as follows:
• Fully lower the runways and check that the level corresponds with the mark on the tank. If necessary, top up with hydraulic oil "ESSO NUTO H32"
or equivalent.

6.2.2 EVERY MONTH

• Check lift screws correct tightening;
• Check hydraulic system correct sealing; tighten loose unions, if necessary;
• Check the condition of hydraulic hoses; if worn out, change them with new equivalent ones;
• Check the condition of pins, rollers, bushes, carriage structure and arms with their extensions, including the amount and condition of the grease; change
any damaged part with original spare parts.

6.2.3 EVERY 200 OPERATING HOURS OR EVERY 5 YEARS, AT THE LATEST

• Replace hydraulic system oil, discharging the exhausted oil from tank. Clean oil filter. For this operation, please refer to the relevant table showing the
supplied spare parts.
• If these operations are carried out with the utmost care, the user will find the equipment in perfect working conditions upon lift restart.

6.3 EMERGENCY HYDRAULIC PUMP

An emergency hydraulic pump can be installed upon request. This pump will be used in case of power cut-off and, on some occasions - as described in
par. "5.5 Emergency Lowering" - in case of any lock at the lowering system.
Please note that the Manufacturer and its distributors are always at your disposal for any service and spare part needs.
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