Nortec MES2 User Manual download pdf (Page 37)

Maintenance and Servicing | 34

Drain Valve Cleaning

Always clean the drain valve before installing a new cylinder. Scale from the spent cylinder may

have fallen into the drain valve and could prevent its proper operation. To properly clean the

drain valve it must be removed and disassembled.

1 Disconnect spade terminals from the drain valve.

2 Remove the screw holding the green ground wire and the two screws holding the valve to

the drain pan.

3 Squeeze the tabs of the spring clamp holding the hose to the drain valve and slide it up the

hose. Pull hose from drain valve. Lift the drain valve from the drain pan.

4 Unsnap red coil cap on solenoid and remove the solenoid from the valve.

5 Loosen brass nut holding actuator to plastic housing with a wrench and disassemble

actuator.

6 Clean actuator components and valve housing (inlet port, outlet port, and cylinder port). Put

new o-ring that was supplied with new cylinder into valve.

7 Reassemble actuator making sure tapered end of spring is oriented as shown Figure 26.

Tighten brass nut 1/4 turn past hand tight.

8 Clean out end of hose and reattach to valve. Slide hose clamp back in place and place valve

into drain pan.

9 Secure valve with 2 screws and attach green ground wire to solenoid.

Figure 25: Drain Valve

Note: Be sure to reattach the green ground wire to reduce the risk of electrical shock.

Cylinder Port

and O-ring

Ground Wire

Spade Connectors

Solenoid

Brass Nut

(Actuator)

Hose and

Hose Clamp

Screws

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 53 54

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Nortec MES2 User Manual Page 37