Xylem A-100NV DIGITAL PERISTALTIC PUMPS - Manual (Page 19)

Page 19
Remove the Old Pump Tube - The pump roller assembly spins in a
counter clockwise direction. The pump head inlet (suction) side is located
at the bottom of the pump and the outlet (discharge) is located at the top of
the pump head.
+ Release any pressure that may be in
the discharge tubing.
+ Disconnect the suction and discharge
tubes from the pump tube.
+ Remove the pump head cover.
+ With the pump running, pull the inlet
fitting out of the pumphead. Guide the
tube counter clockwise away from the
rollers. Pull the outlet fitting out of the
pump head.
Install the New Pump Tube - Be sure the pump head chamber is clean and
free of any debris.
Remove and inspect the roller assembly. Be sure the rollers spin freely. If
required, apply a small amount of grease to the pump head cover bearing.
+ With the pump running, insert the inlet (suction) side of the Pump Tube
fitting into the pump head.
+ Carefully guide the Pump Tube into the pump head. Stretch the tube
slightly and insert the outlet (discharge) fitting into the upper retaining slot
in the pump head.
+ Place the clear cover on the pump head and secure with three screws.
8.4 How to Replace the Pump Tube
The pump tube assembly will eventually break if not replaced. The tube has
been designed for a minimum service life of 500 hours. However, the life
of the tube is affected by many factors such as the type of chemical being
pumped, the amount of back pressure, the motor RPM, temperature and
others. The pump tube assembly must be inspected and replaced regularly.
Inlet Adapter
Outlet Adapter Pump Head
RUN
STANDBY
RUN FIELD DIGIT MODE
PROGRAM
STAND-BY
PRIME
MINIMUM
MAXIMUM
INPUT MODES 1 - MANUAL 2 - 4-20mA 3 - 0-10VDC 4 - PULSE (Hz)
PROGRAM
RESET SERVICE
PRIME
DISPLAY
VARIABLE SPEED PUMP
% SPEED
1 MODE
VDC
SERVICE
1000
ALARM
mA Hz
A-100NV