Installation, Operation and Maintenance Manual
Page
53
of
100
Figure 19 - Typical Steam Humidifier
Humidifier Drain Valve Cleaning
NOTICE
Cleaning the humidifier drain valve procedure must follow the cylinder
removal procedure.
1.
To properly clean the drain valve, it must be removed and disassembled.
2.
Disconnect spade terminals from the drain valve.
3.
Remove the screw holding the green ground wire and the two screws holding the valve to the drain pan.
4.
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.
5.
Unsnap red coil cap on solenoid and remove the solenoid from the valve.
6.
Loosen brass nut holding actuator to plastic housing with a wrench and disassemble actuator.
7.
Clean actuator components and valve housing (inlet port, outlet port, and cylinder port). Use the new O-
ring that was supplied with new cylinder into valve.
8.
Reassemble actuator making sure tapered end of spring is oriented as shown
. Tighten brass nut 1/4 turn past hand tight.
9.
Clean out end of hose and reattach to valve. Slide hose clamp back in place and place valve into drain pan.
10.
Secure the valve with two (2) screws and attach the green ground wire to the solenoid.
