Gardner Denver L55, User And Service Manual

Page: 52 / 64

50 August 20, 2018
Fig. 23
Check the control transformer setting as follows:
·
Switch the unit on as described in Chapter 8.4.
·
Check the control transformer output voltages while
operating under load. Several tapping points are
provided for this purpose (see circuit diagram).
·
Switch the unit off as described in Chapter 8.6.
Change the control transformer setting as follows,
if the output voltage is not correct:
·
Change the control transformer setting accordingly.
·
Set the on-site main switch to
“0”(OFF) and secure
it against being switched on.
·
L55RS-L75RS: wait 10 minutes before touching
electrical components. The power capacitors need
this time to discharge.
·
Change the control transformer setting. Fig. 13
illustrates an example.
·
Then, check the setting again.