Control timer AP3 is suitable for mobile and smaller to medium stationary applications, also for circuits with pneumatic lubrication pumps. The electronic of control timer controls and operates a running of the pump in two separate modes. The basic mode is the programme lubrication time and pause time. If there is progressive distributor fitted with electrical signalling of operation in the circuit, it is possible to use the programme number of lubrication cycle and pause time. The control timer stores a status of lubrication cycles in memory even with supply voltage cut-off. The control timer can be connected to level signalling in the reservoir of the lubrication pump. Control timer AP3 includes other functions such as prelubrication function for longer operational pauses, error evaluation of from one to three progressive distributor switches, external outputs for remote signalling.