Chapter3 Mechanical Installation 19
Liebert. PEX+Series Precision Air Conditioner User Manual
5. Install the fixing bolts (see Figure 3-16, totally 4 PCS) of the fan.
6. Remove the hook from the L shaped lifting component, turn the handle clockwise, tidy the sling and remove the
fixing bolts (see Figure 3-14, totally 4 PCS) of the winch bracket, and take out the winch and the bracket assembly.
7. Remove the fixing bolts (see Figure 3-14, totally 2 PCS) of the L shaped lifting component, and take out the L
shaped lifting component.
At this point, the operation of lowering the fan of one-bay unit is completed.
For the unit with two fans, you should also lower the other fan using the fan elevator assembly. The requirements are
as follows:
1. Repeat the step 1 to step 7 of the one-bay unit to lower the other fan.
2. After lowering all fans, tidy the fan cables and fix them using a cable tie.
3. Confirm if the EC fan has been lowered and installed, and ensure the blade will not touch the fan housing when the
fan is rotating.
3.8 Removing Fastener And Vibration Absorber
To protect partial components from damaging and distorting due to bumping, impact and resonation in transportation,
fasteners and vibration absorbers are mounted at certain locations before delivery. Remove the fasteners and
vibration absorbers before installation and commissioning.
Removing transportation fixing plate of compressor
To reduce the compressor operation vibration and noise, the vibration absorbing cushions are added to the
compressor base. However, such method cannot best restrain the vibration during transportation, and may result in
loosened connections and wearing of certain parts. To prevent this, three L shaped fixing plates are added to the three
compressor bases during transportation, as shown in Figure 3-17.After the installation and before the commissioning,
remove the three L shaped fixing plates before commissioning, and then restore the bolts and washers in the
sequence that is reverse to the disassembly process. The fastening torque of the bolts is (12±1)
N·m.
L shaped fixing plates(3)
Figure 3-17 Positions of L shaped fixing plates
Removing fastener of inrared humidifier
The floating pole of the humidifier high water-level switch are tightly bound together with a rubber string before delivery,
as shown in Figure 3-18.Remove the rubber string before unit operation. Otherwise, the unit cannot detect the high
water-level alarm.
warning
！
Do not touch the lamps with bare fingers.
