Routine Inspections; Prescribed Inspections; Service Life Of The Contactor - DEMAG DC-Com 1 Operating Instructions Manual

Ensure that operating and auxiliary materials and replaced parts are disposed of in an environmentally friendly
manner.
8.3

Routine inspections

8.3.1

Prescribed inspections

WARNING
Non-compliance with operating and maintenance instructions
Danger to life and limb.
Prescribed tests and inspections must be carried out.
– An annual inspection as e.g. specified in German accident prevention regulations UVV/BGV D8 § 23 (2) and
BGV D6 (1) must be carried out.
– Adjustment, maintenance and inspection activities and inspection deadlines including specifications concern‐
ing replacement of parts/assemblies prescribed in the operating instructions must be observed.
This work may only be carried out by specialists.
Cranes and equipment must be inspected by a specialist at least once a year. Routine inspections mainly consist
of visual inspections and function checks which should include a check to determine the condition of components
and equipment regarding damage, wear, corrosion or other safety devices. The routine inspection must be carried
out in accordance with BGV D6 and ZH 1/27 "Principles for the inspection of cranes" in Germany. The results of the
inspection must be entered into a test and inspection booklet. It may be necessary to dismantle the unit in order to
inspect wearing parts. Load carrying means must be inspected along their entire length, including those parts which
cannot normally be seen. Defective parts and components and parts close to failure must be replaced. Please also
note ⇒ "Measures for achieving safe working periods S.W.P.", Page 71 and ⇒ "Inspection and maintenance
schedule", Page 74.
All inspections must be arranged and documented by the owner.
8.3.2

Service life of the contactor

The switchgear is subject to wear during operation of the chain hoist. Its service life has been rated for the specified
loading group. In the case of extreme switching frequencies premature wear is possible.
DC-Com chain hoist
1
2
5
10
Tab. 43
The display value C specifies the expected service life of the contactor multiplied by 100.000. This value has been
determined at normal operating conditions. Under other operating conditions the service life of the contactor may
be shorter or longer, ⇒ "Software version, operating hours, number of cycles, operating statuses", Page 31.
When the corresponding display value is reached, we recommend that the contactor or control module be replaced,
⇒ "Replacing the contactor on the control card", Page 98.
70
Reeving Display value C at U
1/1
2/1
380 - 575 V Display value C at U
nom
80
80
60
50
20
220 - 240 V
nom
80
60
50
20
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