Maintenance; Safety Devices Check (Installer's Responsibility, Before First Start-Up); Emergency Switch / Disconnector; Checking The Split Nuts For Wear - Corghi ERCO 3222N CEL Manuel D'utilisation

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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.

6.1 SAFETY DEVICES CHECK (INSTALLER'S RESPONSIBILITY, BEFORE FIRST START-UP)

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

6.1.1 EMERGENCY SWITCH / DISCONNECTOR

1) Check that the Emergency Switch/Disconnector (17, Fig. 1) is set to 1 (ON) and turn it if necessary.

2) Press the UP/DOWN push-button.

3) At the same time, turn the Emergency Switch/Disconnector (17, Fig. 1) to 0 (OFF) and the lifting arms should stop.

6.1.2 CHECKING THE SPLIT NUTS FOR WEAR

1) Bring the carriages at mid height along the columns.

2) Remove the column casings (12, Fig. 1). Check that the distance between the upper load-bearing lead screw (1, Fig.15A) and the lower safety load-

bearing lead screw (2, Fig.15A) on both columns is between 23 and 24mm.

3) To check that the installation is correct, refer to the level of the plate (A Fig. 19). If the installation is correct, the top of the lower safety lead screw (2

Fig.19) must be at level A.

WARNING

When reference B is flush with the top face of the back-up split nut (2, Fig.15), it is necessary to replace the main split nut (1, Fig. 19).

6.1.3 MIN AND MAX HEIGHT LIMIT SWITCH CHECK

1) Press the DOWN push-button (18, Fig. 1) and bring the carriages fully down. Check that the lower limit switch (6, Fig. 13) stops the motor when the

carriages are approximately 15 mm away from the base.

2) Press the UP push-button (19, Fig. 1) and bring the carriages fully up. Check that the upper limit switch (7, Fig. 13) stops the motor when the carria-

ges are approximately 50 mm away from the top column closure.

3) If the carriages stop at any other position, adjust the position of the affected limit switch.