Watson-Marlow SP40 - Manual (Page 39)

MAINTENANCE OF CAM AND ACTUATORS
36
8.2 Manually operated actuator
The option of a manually operated actuator is available
in two pre-assembled configurations. One for CW and
one for CCW operation as indicated in section 8.5.1.
The orientation of the actuator relative to the drill mark
(M) on the bracket (A) depends on the pump rotation
and port orientation. The drill mark (M) is always
orientated between the pump ports.
A
M
Position 1
Position 3
Position 2
Position 4
M
M
M
M
The pump positions are defined as:
(pump seen from the non drive-end (NDE)
to drive-end (DE). In other words when
looking at the pump front cover.)
Position 1: ports towards the left
Position 2: ports towards the right
Position 3: ports upward
Position 4: ports downward
The actuator rotation is based on a viewing
direction from DE to NDE. Since the
actuator is mounted on the pump cover the
viewing directions for defining pump
rotation and actuator rotation are the
same.