Watson-Marlow 505Du - Manual (Page 5)

5
Part 1: 505Du drive
Siting
To ensure correct lubrication of the gearbox it is important to run the pump only
while its feet are standing on a horizontal surface.
It should be situated where there is free air to circulate around the pump and
where the tubing is allowed to enter the tube clamps without kinking.
The 505Du can be operated at ambient temperatures from 5C to 40C. Storage
temperatures from -40C to 70C are permissible, but allow time for
acclimatisation before use.
Electrical connection
The 505Du operates on single phase mains electricity supplies only. It is fitted
with a mains voltage selector which must be set to either 120V for 100-120V
50/60Hz supplies or 240V for 220-240V~50/60Hz supplies. For sites where the
local voltage is below this specification and the pumphead loading is high, refer
to Part 4: Reduced voltage operation.
To comply fully with the requirements of the EMC directive, all auto-
control connections should be made using screened cable with the
screening taken to earth.
A mains cable fitted with a moulded plug is supplied with the pump, but if another
plug is to be fitted, the colour coding of the mains lead must be observed. The
mains cable for 220-240V supplies is coded so that the live lead is coloured
brown, the neutral lead is coloured blue, and the earth lead is coloured green and
yellow. The mains cable for 100-120V supplies is coded so that the live lead is
coloured black, the neutral lead is coloured white, and the earth lead is coloured
green.
Should the pump fail to operate, check that mains electricity is available at the
unit, that the voltage selector switch is in the correct position, that the fuse is
intact and that the pump is not stalled by incorrect fitting of tubing. If the pump is
to be used under manual control and fails to operate, check that the manual
mode has been selected. If the pump is under auto control check that there is a
signal, the connections are correct and that the pump is correctly set up.
There are dangerous voltages (at mains potential) inside the unit. If
access is required, isolate the pump from the mains before removing the
cover.
Flow rates
The 505Du can be fitted with any of six different pumpheads. For more
information about the 501RL and 505L see Parts 3 and 4 of this manual. For
details of other pumpheads, please refer to the relevant operating instructions.
The flow rates given below were obtained using silicone tubing (except for the
505AA where vinyl tubing was used), with the pumphead rotating clockwise,
pumping water at 20C with zero suction and delivery pressures (unless
otherwise stated). Where an application is critical, the flow rate should be
determined under operating conditions. The important factors are suction and
delivery pressures, temperature, and fluid viscosity. Tube life will be reduced
when pumping against pressure. Maximum numbers of pumpheads/channels
permissible and the maximum rotor speeds are also given.
Failure to
operate