The diagnostic mode will display the message C04 and the fill solenoid is blocked. C05: DRAIN SYSTEM FAILURE: This routine checks for a failure to reduce current if the drain valve is energized for more than five seconds. If the actual current does not decrease when the microcontroller demands a drain cycle, the unit will go into a diagnostic routine. This routine will try twice to correct the drain system failure by cycling the drain valve rapidly. If the failure is not corrected, the unit will

The maximum capacity of the series is 240 Ibs/hr. To allow the Series EHU-700 humidifier to function to its full capability, be certain to install it in accordance with the following Armstrong recommendations. For further assistance, please contact your local Armstrong representative for the video tape, "Armstrong Series EHU-700 Humidifiers: Installation, Operation and Maintenance". DANGER ELECTRICAL SHOCK HAZARD HIGH VOLTAGES EXIST INSIDE THE HUMIDIFIER To protect yourself and others from accid

• Avoid areas of restricted air circulation, or locations where the sensor will be subjected to air drafts, localized heat, or moisture sources. • Locations near coffee machines, computer blower outlets, doors to other rooms, or windows that can be opened are not suitable. 10 Figure 11-1 On-Off Humidistat 1.9 - 3.9 Vdc Switch Opens on RH Rise Voltage Source Ground Stat In N/C 2 17 1 20 White Black Voltage Source Ground Stat In N/C Green Part No. C1471 or C1472 2 17 1 20 Brown Orange Part No. A85

11) Check all wiring connections at the main power, contactor, and control voltage terminal blocks (Figure 14-1), as well as on the generator itself. Energize the circuit breaker or main disconnect. Refer to Start-up Section if you encounter any problems when restarting the unit. 30 STEAM GENERATOR CHEMICAL CLEANING PROCEDURE This procedure is intended as a guide only for the chemical cleaning of the generator in all EHU models. Read and follow label directions on any cleaning product. Check loc