M
AINTENANCE
8. Maintenance
CAUTION
Danger of burns
Burns can occur when touching metallic surfaces
that are hotter than 43
◦
C (109
◦
F).
I
Wear protective gloves.
CAUTION
Danger of frostbite
Frostbite can occur when touching metallic sur-
faces that are colder than 0
◦
C (32
◦
F).
I
Wear protective gloves.
CAUTION
Danger from improper repair
Improper repair can lead to errors on the product
and thus to hazardous situations.
I
Maintenance work on your product may only be
performed by trained and qualified personnel!
Your product is very sturdy and requires very little
maintenance. Compliance with maintenance and
inspection intervals is of great importance in order
that your product
PROFI 16 TI
operates safely and
reliably over a period of many years.
8.1. Inspection and repairs
Your product
PROFI 16 TI
was classified into
groups and dimensioned according to the type
of operation (driving mechanism classification ac-
cording to ISO/FEM). The average daily operating
time and the load spectrum determine the classifi-
cation. This is assuming that the lifting and lower-
ing paths are approximately the same.
For devices used mainly in vertical operation (from
75% of on-time), the theoretical operating time is
reduced due to the higher lowering speed in the
range from 50% to 100% of the nominal load.
Therefore, the determined portion of the theoreti-
cal operating time must be multiplied by a factor of
f
v
.
The factor
f
v
has a value of 1 at 50% of the nom-
inal load, increasing linearly to 1.5 at 100% of the
nominal load (nominal load percentage P).
f
v
= 1 + 0
,
5
·
P
−
50
50
for
P >
50%
In order to achieve safe operating periods, the
company must check that the theoretical operating
time has been achieved during each inspection, by
the person responsible.
This must be documented in the inspection log
at least once annually. The inspection log is only
supplied in the Federal Republic of Germany.
When the theoretical operating time has been
reached, a general overhaul must be performed.
Detailed explanations for the determination of the
actual operating time and its documentation can
be found in the national safety regulations. Alter-
natively, the calculation model in these operation
instructions can be used. The general overhaul
must be initiated by the operator and must be doc-
umented in the inspection log. Information on gen-
eral overhaul can be requested from the manufac-
turer.
Only if the group classification corresponds to the
actual mode of operation of the product does a
safe operating period conform to the theoretical
operating time. Deviations of the actual mode of
operation from the underlying mode of operation
extend or shorten the safe operating period. For
all inspection work that is not a part of the daily
inspection, suitable access to the product must be
ensured. The hoist must be disconnected from the
energy supply during assembly work.
Following each repair, the product must be
checked for operational readiness.
Doc.-No.: VA049318-20-OM-EN-0319-64-6
Page
41
of 64
