Herrmidifier Herricane CS - Manual (Page 27)

Herricane CS ® Series
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
27 www.herrmidifier-hvac.com
IX. TROUBLESHOOTING GUIDE
Humidifier Will Not Discharge Steam
• Check humidifier to see if it is hot and charged with steam. If humidifier is cold and does not contain steam, check supply
valve to be sure it is open, check strainers to insure that they are not plugged and any pressure regulating device used
in the system.
• Check humidistat to insure that it is operating properly. If no output, electrical or pneumatic, is obtained from the humidistat,
the humidistat is at fault and should be repaired or replaced.
• Check valve operator and valve. A valve operator could have a damaged motor or ruptured diaphragm which would
prevent it from responding to the appropriate signal. Also check valve controller mechanisms and the valve to insure it
has not been jammed closed with dirt and debris.
Humidifier Discharges Steam Continuously Even After Reaching Desired Humidity Level
• Check humidistats and controllers for proper operation and calibration. If they are found to be at fault, repair or replace.
• Check valve operator for defect. Repair or replace as necessary.
• Check valve for build up of dirt. Clean or replace as necessary. Clean inlet strainer at this time.
• Check to see that the actuator is mounted correctly.
Humidifier Discharges Water
• Nozzles spraying directly on duct walls. System designed for 1” thick walls. If walls are thicker than that, notify factory for
simplest remedy. It may be necessary to modify manifolds in some manner.
• Check to see humidifier is plumbed correctly. See installations drawings for appropriate system.
• Check to insure steam traps are correct for application and that they are not clogged with dirt or debris.
• If boiler carryover is reason for flooding of humidifier, check with powerplant operator to correct situation.
• Check to see that all manifold traps drain to a gravity drain.
• Supply trap may be piped to a pressurized condensate return but inlet steam pressure must be sufficiently higher than
condensate pressure to compensate for any lifting of the condensate.
• Check to see that humidifier is mounted correctly. See appropriate installation drawing.
• If humidifier is at end of long run of supply line and system has been inactive for period of time, allow supply trap to warm
up prior to activating humidistat.
• For CS-3119 models, shut-off steam control valve and open slowly to allow condensate to fill “p” trap on the unit.
• Steam supply pressure is in excess of 125% of design pressure. Adjust as necessary.