Testing Withdrawable Parts; Motor-Driven Withdrawable Parts; Checking Correctness Of Dimensional Settings; Checking Auxiliary Switch Setting On Withdrawable Parts - ABB UniGear ZS1 Instruction Manual

7.5. Testing withdrawable parts

When functional tests are carried out on withdrawable parts, compliance with the conditions listed
below should also be checked.
7.5.1 Motor-driven withdrawable parts (not standard)
Carry out testing of motor-driven withdrawable parts in the same way as for manually operated
withdrawable parts:
• Switch off the auxiliary power (m.c.b.), since the motor could otherwise be braked electrically;
• Turn hand crank 121 in the required direction;
• Ensure that the spindle nut is correctly lubricated.
Note
When the withdrawable part moves, the motor turns. The motor functions like a generator in these
cases, i.e. it can lead to reverse voltages in the terminals.

7.5.2 Checking correctness of dimensional settings

1. The distance between lever 13.26 operated by tie-rod 13.91 (figure 148) and plastic cam 13.25
should be 2±1mm.
If adjustment is required, loosen the two bolts 13.91.1 and 13.91.2. Deviations from the specified
value can have the following effects:
• Dimensions too large, locking system for the drive spindle deactivated;
• Dimensions too small, proper action of the electrical interlock no longer guaranteed;
2. The distance between roller 13.24 and angle lever 13.92 should be 0.5 mm when the circuitbreaker
is closed.
If adjustment is required, loosen the two bolts 13.91.2 and 13.92.1.
7.5.3 Checking auxiliary switch settings on withdrawable parts
Compliance with the interlock conditions in the test/disconnected and service position areas is ensured
by position signalling switches S8 and S9 (figure 151) located in the withdrawable assembly and
factory-set.
During testing operations, the withdrawable part must be moved by hand with the crank fitted and with
the motor power switched off.
1. Settings in the area of the test/disconnected position:
• Move the withdrawable part out of the test/disconnected position towards the service position with
a few turns of the crank;
• Slowly move the withdrawable part back to the stop.
Auxiliary switch S8 must then switch over just before the stop is reached.
• Slowly insert the withdrawable part from the test/disconnected position towards the service
position until auxiliary switch S8 just operates.
In this position, it must still just be possible to move closing push-rod 13.2.1. For this test, the
function of the locking magnet Y0 must be deactivated manually.
This condition ensures that the electrical interlock takes effect before the mechanical interlock in
the motion sequence involved.
2. Settings in the area of the service position:
• Move the withdrawable part out of the limit position towards the test/disconnected position with
a few turns of the crank;
• Slowly move the withdrawable part forward again to the stop. Auxiliary switch S9 must then switch
over just before the stop is reached.
7.5.4 Checking the direction of rotation of the travel motors on motor-driven withdrawable
parts
• Move the withdrawable part by hand into a central position between the test/disconnected position
and the service position;
• Remove the hand crank;
• Switch the auxiliary voltage for the travel motor on;
• Use the local electrical controls to check that the withdrawable part moves in the correct direction.
Caution
Do not allow the withdrawable part to run up against a lock when the travel direction is incorrect! Switch
the motor power off immediately (the travel process functions electrically by a seal-in system with limit
position switch-off).
There may be a danger of injury when the door is open!
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