ENG
4.0
GLT
Ω
L
IFT
O
PERATION AND
M
AINTENANCE
M
ANUAL
Page | 38
CASE
DESCRIPTION
B
DESCENT INTO PIT EN81-20 + EN81-21 WITH NO 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
The maintenance technician can now work in the pit without moving the
car, e.g. to clean or carry out maintenance operations, etc.
• Visible:RED light
EXIT SEQUENCE
STEP
ACTION NOTES
1
Detach the ladder from its storage housing and place it ready to climb out
of the pit.
• Visible:RED light
2
Open the landing door to the pit by pulling the lock release cable on the
door.
• Visible:RED light
3
Climb out of the pit up to the entrance landing.
• Visible:RED light
4
Put the ladder back into its storage housing.
• Visible:RED light
5
Release the emergency stop (red button).
• Visible:RED light
6
Close the landing door.
• Visible:RED light
7
Turn the key on the switch outside the landing to “RESET” to restore the
electrical panel functions (buzzer).
• Visible: no light
8
The lift is back in service (floor call buttons are not lit).
• Visible: no light
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