Those rewinders do not need any special maintenance.
They are equipped with special springs and an automatic catch (back-run safety device) which guarantees a pull relief operation.
The conductors are provided with earthed or CEE couplings and the earthed drums are provided with earthing terminals.
The rewind capacity is upto max. 18 m cables H07RN-F 4x1,4 or 15 m 5x2,5.
The rewinders are designed for stationary installation and with corresponding adapters they can be installed to the wall or ceiling, too.