7 Secondary Filter Service (if Fitted)
The control panel may be hinged up 90° on gas struts to give improved access to service the secondary filters. See Figure 8.1
below .
IMPORTANT! If the control panel does not move, then the transit retaining bolts were not removed during the
installation process. Refer to SL-07625 CoolChip CDU 600 Installation and Commissioning.
To remove these bolts now requires the unit to be shutdown and power removed by using the isolator/disconnect switch to
open the power section door of the control panel and gain access to these bolts.
Figure 8.1 Hinging Up Control Panel
Remove and clean the secondary filters using this procedure:
IMPORTANT! If the unit is a single pump unit, then the CDU must be stopped before cleaning the filter. If the unit has
twin (redundant) pumps, then the filters can be cleaned while the unit is running, provided that operation is switched
to the pump/filter not being cleaned. Place the pump supplying the filter to be cleaned into the out of service state via
the Service menu.
1. Hinge up the control panel as shown in Secondary Filter Service (if Fitted) above .
2. Close the filter isolation valves A and B to positions shown in Figure 8.2 on the next page .
3. Drain a cupful of fluid from the filter housing using the drain valve and drain h ose at the base of the filter housing.
It is not necessary to completely drain the filter housing before removing the filter screen.
4. After draining some fluid, undo the clamp ring at the top of the filter housing. Withdraw the cap and filter screen
using the T handle provided. Once clear of the filter housing, the filter screen can be brought through the front
door of the unit out through the roof of the unit.
5. To clean the filter, rinse with DI water or PG solution and then let drip dry .
7 Secondary Filter Service (if Fitted) Proprietary and Confidential ©2025 Vertiv Group Corp. 73
Vertiv™ CoolChip CDU 600 Operation and Maintenance Guide
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