5
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4.2
Cool Down
1) Set Selector Switch to STANDBY.
2) COOL DOWN light will come on for 5 minutes.
3) When COOL DOWN light is off, Main Disconnect can be
switched to OFF.
Failure to follow
COOL DOWN PROCEDURE
may result in
damage to unit due to overheating.
ALWAYS
follow
COOL
DOWN PROCEDURE
before shutting unit down.
4.3
Shut Down & Disconnect Procedure
1) Verify COOL DOWN light is not illuminated and
Cool Down Procedure has been followed.
2) Turn Main Disconnect Switch to OFF.
3) Disengage Power Source.
4) Lock Out Power Source.
5) Disconnect Power Cable.
5 Control Panel
5.1 Main Disconnect
The main disconnect switches power from the source to the
panel. Power must be disconnected at the source prior to
accessing control panel. Access to the control panel with
power applied is ONLY by qualified service personnel with the
appropriate personal protective equipment
Power is present up to disconnect even in OFF position.
Disconnect power at the source before opening panel.
5.2 Standby Light
The STANDBY indicator lamp illuminates to indicate that
power is supplied to the control panel.
5.3 Phase Out
The PHASE OUT indicator lamp illuminates to indicate that
the 3-phase power is not correctly wired into the power
supply. Change the wiring at the power supply connection to
correct the phase order.
5.4 Selector Switch
When the selector switch is moved to the “RUN” position,
the 4800E starts dehumidifying. The machine will continue
to dehumidify in all conditions until the power is turned off.
No dehumidistat is provided to monitor process inlet air
condition (see over-dry warning section 3.5). An external
control (dehumidistat, thermostat or other contact) can be
wired in place of the jumper across terminals 3040 and
3042. The external control must be designed to operate a
115 VAC circuit.
5.5 Alarm (Light and Horn)
The alarm indicator lamp illuminates (and horn sounds) to
indicate that a fault condition exists. The fault conditions
could be:
• Motor Overload (process or reactivation)
• Reactivation Temperature greater than 375°F
• No dehumidification (i.e. saturated wheel)
• Low reactivation airflow
• Stuck heater contactor
An external alarm can be wired to terminals 3080 (power)
and X2 (neutral). This would supply 115 VAC during an alarm
condition.
5.6 Hour Meter
The hour meter will run whenever the 4800E is operating.
This hour meter measures the cumulative time of operation
in one-tenth hour increments. This meter is often used to
verify hours on a job or to schedule maintenance.
6 Maintenance
6.1 General Maintenance
A definitive time schedule should be established for
inspecting all rotating parts and components. Inspection
requirements depend on the frequency of operation,
transport, and operating conditions. Periodically check
the condition of the air filter, rotating parts, and fasteners
to ensure they are secure and in proper working order.
Periodically check airflow to make sure there are no
obstructions to airflow in outlet or inlet ductwork.
Recommended minimum inspections:
• Upon installation
• After 1 week of operation.
• Annually thereafter or upon loss of performance.
6.2 Cabinet
Disconnect power before removing access panels.
Remove panel fasteners and panels from unit to access
internal components. The condition of the cabinet gaskets
should be observed during inspection and servicing to insure
a good seal. Any leaks must be sealed and panels securely
fastened for proper dehumidifier operation.
6.3 Filter
The maintenance interval for the filter depends directly on
the cleanliness of the air entering the dehumidifier. It is
suggested that a program be established to assure that the
filters are replaced or cleaned prior to becoming clogged to
