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58332 Schwelm
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www.henning-gmbh.de
www.henning-cnc.de
Operating Instructions Elevator Buffers LP Page 4 Edition 3.3.1 EN of 03.04.2017
5.1 Electric Connection
Dangerous Voltage!
During connection work the installation must be de-energised!
Carry out the electric connection to the limit
switch 13 (Figures 1a or 1b). During wiring the
working range of the linear slide 17 and the
protection tube 10 during buffer stroke must be
observed.
6 Commissioning
!
Safety Instruction:
During buffer testing no persons are allowed
to stay in the elevator shaft!
1. Verify the extended position of the piston
rod and the oil level.
2. Carry out a first buffer test with reduced
speed and without additional load.
3. Verify the electrical signal of limit switch 13.
4. Wait for approx. 1 - 2 minutes and then re-
lieve the buffer.
5. Verify the extended position of the piston
rod and the oil level. Check the buffer and
the impact point for possible damage and oil
leaks.
6. If no defects are found, carry out a second
buffer test. This test should be carried out, if
possible, with rated speed and maximum
load.
7. Repeat points 4. and 5. .
If no defects are found, the buffer is ready for
operation.
7 Regular inspections
During regular inspections of the elevator instal-
lation or for trouble shooting the following
inspections are possible for which all the a/m
safety instructions must be observed:
7.1 Inspection of the extended piston rod
Buffer with protection tube to Fig. 1a:
• The sight glass 9 is not masked by the pro-
tection tube 10.
• The limit switch 13 is not actuated.
Buffer with linear slide to Fig. 1b:
• The limit switch 13 is not actuated.
• The visible part of the piston rod is as long
as the respective stroke (see indication on
the type plate).
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