Arjohuntleigh FLOWTRON UNIVERSAL, Service Manual

Page: 63 / 116

Flowtron Universal Service Manual Pump Repair
Issue 2 Chap 5
Sep 2009 SER0009 Page 25
20 Installing the Motor and Manifold Assembly
20.1 If the hose set assemblies were not removed, make sure that the O-ring is correctly installed on
each hose set elbow connector (Refer to Figure 43).
20.2 Make sure the two LEDs (adjacent to the transducer) are vertical on the control PCB assembly,
and have not been knocked or moved during the removal procedure (Refer to Figure 43).
20.3 Carefully install the motor and manifold assembly (Fig 43, Item 10) onto the control PCB and top
case assemblies (Fig 43, Items 20 and 30).
Note: If the hose set assemblies are still connected to the top case assembly, the motor and
manifold assembly will be a tight fit on the elbow connectors on the hose sets.
20.4 Install the four screws (Fig 43, Item 40) to secure the motor and manifold assembly.
20.5 Connect one end of the longer transducer tube (Item 60) onto the transducer outlet on the motor
and manifold assembly (Fig 43, Item 10).
20.6 Connect the other end of the longer transducer tube (Item 60) onto the top outlet on the
transducer on the control PCB assembly (Refer to Figure 43).
CAUTION: Do not handle the transducer on the control PCB assembly
unnecessarily. The transducer is a sensitive device. To avoid damage,
put your finger at the back of the transducer while you push the tube
onto the top outlet at the front of the transducer.
20.7 Connect the stepper motor connector onto the control PCB assembly (Fig 43, PCB Con 9).
20.8 Install the top case assembly onto the front case (Refer to Page 16, Section 15).
20.9 If the hose set assemblies were removed from the pump, then inspect and install new or the
original hose set assemblies (Refer to Page 10, Section 9).
21 Including a Longer Transducer Tube on the Motor and Manifold Assembly
21.1 Originally the transducer tube was part of the control PCB assembly. The pressure outlet is in a
different position on the new, modified motor and manifold assembly, 507420. Therefore, if a
new motor and manifold assembly is installed, the short transducer tube must be replaced by
the new longer transducer tube, 507494.
21.2 Refer to Figure 47 and Table 17, which detail the longer tube.
21.3 To remove the motor and manifold assembly (spares item 507420), carry out the procedure
detailed in Chapter 5, Page 19, Section 18, with the following changes:
21.3.1 Instead of paragraph Chapter 5, Page 19, Section 18.3, follow this instruction:
Disconnect the small diameter transducer tube from the transducer on the control PCB
assembly.
21.3.2 Ignore the CAUTION after Chapter 5, Page 19, Section 18.3.
21.4 To install the motor and manifold assembly spares item, 507420, carry out the procedure
detailed in Chapter 5, Page 25, Section 20, with the following changes:
21.4.1 Instead of paragraph Chapter 5, Page 25, Section 20.5, follow this instruction:
Connect one end of the longer transducer tube (Fig 47, Item 10) onto the transducer
outlet on the motor and manifold assembly.
21.4.2 Instead of paragraph Chapter 5, Page 25, Section 20.6, follow this instruction:
Connect the other end of the longer transducer tube (Fig 47, Item 10) onto the top
outlet on the transducer on the control PCB assembly.
21.4.3 Observe the CAUTION after Chapter 5, Page 25, Section 20.6.