To Next PageTo Next PageHow to troubleshoot KAESER Dehumidifier indicator lights not illuminated?
If the indicator lights are not illuminated, it could be due to several reasons: there is no power to the unit, the On/Off switch is turned off, a fuse is blown, or there is a malfunction in the On/Off switch or board. To solve this, check the voltage at the terminal board, turn on the switch, replace the fuse, or replace the board.
Why is there excessive purge discharged during the purge cycle on my KAESER KAD?
Excessive purge during the cycle can be due to several reasons. It could be that the purge flow is too high because the purge pressure is too high. Another cause may be that the inlet switching valve fails to close. For models 40 through 3000, it could be a Shuttle Valve issue; for models 4100 through 5400, the problem might be with the outlet check valve of the same tower or the purge check valves of the opposite tower failing to close. To address this, refer to Section 9 to determine the correct Purge Pressure Indicator setting. Also, verify the voltage to the pilot solenoid valve, check the pilot air pressure, and ensure proper actuator operation. Check the valve for any obstructions or seat damage. Finally, repair or replace the valve(s) as needed.
What to do if the moisture indicator turns yellow on my KAESER Dehumidifier?
A yellow moisture indicator, signaling an elevated outlet dew point, can occur for several reasons. The design conditions might be exceeded, or the desiccant could be spent or contaminated, for example, with oil, or saturated with water. In such cases, replace the desiccant. You may also operate at a reduced flow to reactivate desiccant beds until the desired outlet dew point is achieved.
What causes premature saturation of desiccant in KAESER Dehumidifier?
Premature desiccant saturation can occur due to insufficient purge flow because the purge pressure is too low. Another cause might be incomplete tower depressurization, indicated by tower pressure greater than 2 psig, potentially due to clogged mufflers. It can also be caused by incomplete tower depressurization if the purge/repressurization valve fails to open, insufficient purge time due to incorrect controller settings or a faulty controller. To resolve this, replace muffler inserts. Also, verify voltage to the pilot solenoid valve and check the pilot air pressure (60-120 psig required), and verify proper actuator operation.
Why does my KAESER Dehumidifier tower fail to repressurize to line pressure?
A tower failing to repressurize to line pressure may be due to the purge/repressurization valve failing to close, which results in air loss from the mufflers during the tower repressurization portion of the cycle. Another potential cause is insufficient purge flow because the purge pressure is too low. Verify the removal of voltage to the pilot solenoid valve and ensure proper actuator operation. Check the valve for obstruction or seat damage.
What causes excessive desiccant dust downstream in my KAESER KAD Dehumidifier?
Excessive desiccant dust downstream can be caused by fluidization of the desiccant bed, which happens when design conditions for maximum rated flow are exceeded. It can also occur due to rapid repressurization of the offstream tower caused by a faulty timer or insufficient purge flow resulting from low purge pressure.
How to fix switching failure alarm on KAESER KAD?
A switching failure alarm (Level 1 & Level 2 Controllers only) can be triggered by faulty pressure switches or the control board. It may also occur if the offstream tower did not depressurize in time and/or below 10 psig, or if the offstream tower did not repressurize in time and/or above 10 psig. Replace the components.
General| Model | KAD Series |
|---|---|
| Noise Level | Varies by model |
| Weight | Varies by model |
| Dimensions | Varies by model |
| Category | Dehumidifier |
| Air Flow | Varies by model |
| Power Supply | Varies by model |
| Operating Principle | Adsorption |
Safety precautions for pressurized equipment.
Electrical safety requirements for installation and operation.
Information regarding the suitability of air for breathing.
Caution regarding dryer operation without mufflers.
Caution regarding high velocity air during depressurization.
Procedures for checking shipment for damage upon arrival.
Safety advice for moving the equipment.
Procedures for checking for concealed damage.
Explains the dual tower regenerative desiccant dryer operation principle.
Describes the system for saving energy (purge air) at reduced loads.
Details the operational flow for specific models using shuttle valves.
Guidance on selecting an optimal location within the air system.
Requirements for inlet air temperature cooling.
Role of air receivers in the system.
Importance and types of pre-filters.
Need for downstream filtration for air purity.
Guidelines for dryer placement and access.
Checking dryer specs against operating conditions.
Information on standard and optional maximum pressures.
General description of the solid-state dryer controller and its levels.
Lists figures related to the Timer Based Controller.
Details connections for the Timer Based Controller.
Lists figures pertaining to the Level 1 Controller.
Details connection information for the Level 1 Controller.
Function of Jumper J1 for pressure selection.
Function of Jumper J2 for common alarm configuration.
Function of Jumper J3 for service reminders.
Function of Jumper J4 for power recovery.
Function of the dryer on/off switch.
Function of the operating mode selector switch.
Function of the energy/purge savings selector switch.
Function of the reset/manual advance switch.
Lists figures pertaining to the Level 2 Controller.
Details connection information for the Level 2 Controller.
Function of Jumper JP1 for pressure selection.
Function of Jumper JP2 for electric drains.
Function of Jumper JP6 for common alarm configuration.
Details the Program Mode for controller setup.
Entering and exiting Program Mode.
Explains how alarm messages are displayed.
Displays dew point class and cycle type.
Displays energy savings percentage.
Displays filter service reminder status.
Displays desiccant service reminder status.
Displays valve service reminder status.
Details screens for Test Mode steps 1 through 8.
Step-by-step guide for starting up the dryer.
Covers power, moisture indicator, purge pressure, alarms, LEDs, and gauges.
Verifying valve operation and sequencing.
Max/Min pressures and max temperature specifications.
Minimum and maximum ambient temperature limits.
Covers max purge, average purge, min outlet, and average outlet flows.
Procedures and frequency for desiccant replacement.
Maintenance of purge mufflers.
Checking valves for leaks and operation.
Procedure for pilot air filter replacement.
Covers issues like no power, moisture indicator, desiccant saturation, tower repressurization, purge flow, dust, and switching alarms.
