I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
16
www.herrmidifier-hvac.com
Herrtronic
®
Model 6500
Problem/Symptom
Reason - Correction
Water “foaming” inside the cylinder
Check drain valve and ensure that water drains freely. If necessary, clean or replace valve if
defective.
Check water supply. If it is commercially softened, either increase the drain threshold (POT2)
to 85% or reconnect the unit to raw water. Drain and restart the unit. If the unit is connected
to a hot water line, reconnect to the cold water line.
If steam line is hard copper, drain cylinder and test unit operation disconnected from steam
line to ensure flux from solder joints is not causing foaming.
Observe the fill tee (GT-120). If water is going down the overflow and the water level is low:
•
Check to ensure that static pressure in the duct is not forcing water down the overflow
instead of allowing water to enter the cylinder.
•
Adjust the fill metering valve to regulate the water flow to the cylinder.
•
Unit filling slower or at the same rate as it is boiling off, causing over concentration and
foaming. Fill rate must be increased. Open metering valve.
•
If the fill valve is already fully open, get a water analysis and consult the factory.
Cylinder fills and overflows
Check cylinder wiring (See Figure 12.)
Check wiring of cylinder full interface.
Replace the circuit board.
Consult the factory after obtaining a water analysis
Unit cycle ON and OFF rapidly
Check location and setting of high limit humidistat.
Cabinet leaks
Check for loose connections.
Fill tube out of fill tee.
Steam cylinder out of drain cup.
Cabinet drain backing up, kink in drain line.
