A708-01-880 Issue E
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
4. Clean the O-ring sealing faces of the left- and right-hand end caps (Figure 12, items 17, 9) (Figure 13, items 5,
15) and the mating surfaces on the heat exchanger (Figure 12, item 6) (Figure 13, item 10).
5. Fit the new O-ring (Figure 12, item 16) (Figure 13, item 6) and then use the four bolts (Figure 12, item 18) to
refit the left-hand end cap (Figure 12, item 17) to the heat exchanger. IDX1300 use the four washers (Figure 13,
item 3) and four nuts (Figure 13, item 2) to refit the left-hand end cap (Figure 13, item 5).
6. Fit the new O-ring (Figure 12, item 8) (Figure 13, item 12) and then use the four bolts (Figure 12, item 11)
(Figure 13, item 14) to refit the right-hand end cap (Figure 12, item 9) (Figure 13, item 15) to the heat
exchanger.
7. Refit the hex fitting (Figure 12, item 4) (Figure 13, item 21) to the left-hand end cap (Figure 12, item 17)
(Figure 13, item 5).
8. Refit the cooling water return pipe to the cooling water outlet (Figure 12, item 10) (Figure 13, item 13). Do not
turn on the cooling water supply yet.
5.10.4 Clean the coolant level sight-glass
Refer to Figure 12, detail B and use the following procedure to clean the coolant level sight-glass.
1. Undo and remove the eight bolts and washers (12) from the bezel (13) of the coolant level sight-glass.
2. Remove the bezel (13), sight-glass (14) and gasket (15) from the heat exchanger (6).
3. Clean all of the sight-glass components and the sight-glass recess in the heat exchanger (6) with a soft lint-free
cloth. If necessary, use a suitable cleaning solution; if using a cleaning solution, ensure that all of the solution is
removed before reassembling the sight-glass.
4. Fit the gasket (15), sight-glass (14) and bezel (13) to the heat exchanger (6) and secure with the eight bolts and
washers (12).
5.10.5 Prepare the pump for operation
1. Check the coolant level and refill if necessary as described in Section 5.5.
2. Check that there are no coolant leaks, particularly at the joints with removed and refitted cooling system
components. If any leaks are found, remake the connections and ensure that the leaks are sealed.
3. Turn on the cooling water supply, then check for cooling water leaks, particularly at the joints with removed and
refitted cooling system components. If any leaks are found, remake the connections and ensure that the leaks
are sealed.
5.11 Replace the pump motor
5.11.1 Remove the pump motor
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