4.0
ENG
GLT
Ω
L
IFT
O
PERATION
M
ANUAL
Page | 41
CASE
DESCRIPTION
D
DESCENT INTO PIT EN81-20 + EN81-21 WITH CAR MOVEMENT
“high” / “low” TMC car = pit with a height of less than 1,000mm (min. 450-500 mm).
ENTRY SEQUENCE
STEP
ACTION NOTES
1
Bring the car to the next floor above the pit by traditional call.
• Visible:RED light
2
Open the landing door to the pit with the emergency key.
• Visible:RED light
• Meaning: The maintenance
technician can descend into the pit
safely as he is protected by the A3
anti-creep system of the overspeed
governor, which is active and
directly connected to the safety
system triggered by the intervention
of the car safety gear.
3
The lift is out of service (floor call buttons are lit up).
• Visible:RED light
4
Press the emergency stop (red button).
• Visible:RED light
5
Detach the ladder from its storage housing and place it ready for descent
into the pit.
• Visible:RED light
6
Close the landing door (for safety).
• Visible:RED light
7
Put the ladder back into its storage housing.
• Visible:RED light
8
Lift the “CAR” pedestal from the horizontal position to the vertical
position.
• Visible:RED light
9
Lift the “COUNTERWEIGHT” pedestal from the horizontal position to the
vertical position.
• Visible:RED light
10
Release the emergency stop (red button).
• Visible:GREEN light
11
Turn the selector switch on the maintenance push-button panel to
“maintenance operation”.
• Visible:GREEN light
12
The maintenance technician can now use the buttons on the maintenance
push-button panel to move the car up (by pressing the blue and white
buttons simultaneously) or down (by pressing the blue and black buttons
simultaneously) at speed (automatically selected as slow).
When stopping the movement, it is advisable to release the common blue
button before the direction button so that the lift stops more smoothly
(highly recommended).
• Visible:GREEN light
IMPORTANT!
Nevertheless, there are two safety stop contacts in the pit; the first upwards one is active when
the lift is in maintenance operation and stops the car moving down when it reaches it.
This contact is positioned to anticipate the impact of the car on the pedestal / buffer.
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