Data Aire gForce DX series - Humidifier Canisters; Refrigerant Filter Drier; Plenum (Plug) Fans; Electronically Commutated Motors

42
Cylinders are disposable and do not requiring cleaning or maintenance. The humidier ll level, water
conductivity and ush rate automatically adapt, both in frequency and duration, to variations in the
incoming water. The humidier assembly is capacity eld-adjustable and includes a high-water probe.
Drain duration and drain interval are also eld-adjustable.
8.4.1 Humidier Canisters
The steam generator type humidier does not require maintenance other than to replace the canister
as required. The frequency of change will depend on usage and water type. A set of the humidier
manufacturer’s instructions is included with the paperwork placed inside the unit when it ships.
8.5 Refrigerant Filter Drier
Factory installed refrigerant lter driers do not normally require maintenance. When replacing
compressors or other repairs that open the refrigeration system to atmosphere, it is advisable to replace
the lter drier. The equivalent type and size should be used.
8.6 Plenum (Plug) Fans
Electronically Commutated (EC) motors with backward-curved plenum (plug) fans are standard on all
gForce units.
Maintenance is not required on electronically commutated (EC) motor/plenum fan modules. The motors
are sealed, have maintenance free ball bearings and permanent lubrication. The only acceptable
service is replacement.
WARNING: Due to the use of capacitors in the electronic systems of the plenum fan
motor, danger exists even after the input power has been switched OFF. Do not directly
touch the energized parts due to the internal circuits remain energized for a short period
of time after shutdown or due to faults. The controller housing cover may only be opened
when the input power has been switched OFF and a period of three minutes has elapsed
since switching it OFF.
8.6.1 Electronically Commutated Motors
WARNING: The plug fan modules are powered by high voltage input line power (i.e.
208-230V/3PH/60HZ or 460V/3PH/60HZ). Do not carry out any work on electrically
live parts. Even after disconnection, the de-link circuit is still live. Always wait at least 3
minutes.
EC motors have built in protective features that include the following:
• Over-Temperature protection of the (motor) electronics,
• Over-Temperature protection of the motor,
• Locked rotor protection,
• Phase failure protection,
• Under voltage detection,
• Short circuit protection.
If any of the conditions exist, the motor stops electronically and an alarm (FAN FAILURE) will be
indicated on the unit’s controller screen.
The motor will not start-up automatically. To reset, the power supply must be switched to OFF for a
minimum of twenty (20) seconds.