Replacing Water Filling Solenoid Valve; Replacing Steam Discharge Solenoid Valve; Replacing Vacuum Line Solenoid Valve; Replacing Check Valve - NUVE OT 020 Service Manual

Bench top steam sterilizers
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5.6. Replacing Water Filling Solenoid Valve (see Figure 9)
Remove the solenoid valve (17) bobbin socket after removing its screw.
Remove the solenoid valve mounting screw from the bottom of the steam sterilizer.
Remove the solenoid valve (17) without moving the check valve and remove the connection
adaptors on the solenoid valve.
Connect the new connection adaptors by putting some liquid gasket on to the inlet and outlet of the
new solenoid valves.
Mount the new solenoid valve as its arrow direction is shown in the water and steam unit diagram
(Figure 5 or Figure 6).
Mount the solenoid valve inlet hose by making sure that there is no leakage in the check valve
connection.
Mount the solenoid valve bobbin socket carefully.
5.7. Replacing Steam Discharge Solenoid Valve ( see figure-9)
Remove the solenoid valve (18) bobbin socket after removing the screw.
Remove the solenoid valve mounting screw from the bottom part of the steam sterilizer.
Remove the solenoid valve (18) inlet and outlet hoses by loosening its connection nuts.
Remove the connection adaptors on the solenoid valve inlet and outlet and place them onto the
new solenoid valve.
Mount the new solenoid valve as its arrow direction is shown in the water and steam unit diagram
(Figure 5 or Figure 6)
Mount the solenoid valve bobbin socket carefully.

5.8. Replacing Vacuum Line Solenoid Valve

Remove the solenoid valve (19) bobbin socket after removing its screw.
Remove the solenoid valve mounting screw from the bottom of the steam sterilizer.
Remove the solenoid valve (19) inlet and outlet hoses by loosening its connection nuts.
Remove the connection adaptors on the solenoid valve inlet and outlet and place them onto the
new solenoid valve.
Mount the new solenoid valve as its arrow direction is shown in the water and steam unit diagram
(figure 5 or Figure 6)
Mount the solenoid valve bobbin socket carefully.
5.9. Replacing Check Valve (see figure-10)
Remove the water filling check valve (27) with their connection adaptors.
Remove the connection adaptors from the check valve and place them onto the new check valve.
Fix the new check valve as its arrow direction is shown in the water and steam unit diagram (Figure
5 or Figure 6)
Make sure that the check valve is mounted vertically, which is an operating principle.

5.10. Replacing Vacuum Pump

Disconnect the vacuum pump (20) electrical terminals.
Remove the vacuum pump inlet and outlet pipes.
Remove the vacuum pump mounting screws.
Place the new vacuum pump and make the necessary electrical connections carefully.
5.11. Replacing Water Pump (see Figure 9)
This feature is valid only for OT 020V.
( see Figure 9)
♣ ♣ ♣ ♣
♣ ♣ ♣ ♣
( see Figure 9)
15

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