Manual# I27028 5-2 Rev. 2 – 11/22/2017
HMI (Optional) -
If the HMI option has been purchased, this is installed on the front of the electrical
enclosure. This panel shows the status of the machine, and also presents any fault or
warning messages. Use this display to check the reactivation inlet and outlet
temperatures and the machine run time. Note that the operator display just reports
information from the machine - it is not a controller. If the display is not working correctly
for some reason, the rest of the dehumidifier may continue to operate normally. If there is
an alarm, it must be reset on the machine itself and the alarm indication must also be
cleared on the HMI display.
5.2 STARTING THE UNIT
1. The units have a disconnect switch on the front panel. Be sure power is available to
the Munters unit and this switch is turned on.
2. Check to see that the center of the Auto/Off/Manual switch is lighted. This means
the unit has power. The control panel will show that the machine is ready to run.
3. (Optional) Process fan selector switch should be set to auto mode.
This will allow the process fan to cycle with the Dehumidifier
Auto/Off/Manual switch.
4. Select the reactivation energy type (electric or gas)
If gas is selected, regulator must be set to correct propane or natural gas
setting.
5. Enable the Unit
Select Dehumidifier manual (for continuous dehumidification and process
fan operation) or auto (for humidistat operation) mode
All R-Series units are equipped with a run time meter located within the
main electrical enclosure. The run time meter records the accumulated
operational time of the process blower.
AUTO MODE
If the unit has a remote sensor such as a humidistat, set the Auto/ Off/ Manual
switch to Auto. The unit will begin to run, the process blower will begin to run and
the reactivation will cycle with the humidistat. The green lights on the control panel
will show that the machine is running. (If the reactivation circuit does not run,
check the set-point on the humidistat.)
Note: If the humidistat is not installed the unit will operate as if dehumidifying is
constantly required.
MANUAL MODE
If the unit does not have a remote sensor, turn the Auto/ Off/ Manual switch to
Manual. The unit will begin to run, the process blower will begin to run and the
reactivation will be enabled. The green lights on the control panel will show that
the machine is running.
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