JOHNSON CONTROLS
136
FORM 201.30-ICOM1 (519)
ISSUE DATE: 05/22/2019
SECTION 7 - MAINTENANCE
Replacing the Filter Drier
If the eductor flow seems restricted by high eductor
outlet temperatures or if the oil is replaced, replace the
filter using the following instructions to replace the
drier as shown in Figure 66 on page 136.
1. Power down the chiller.
2. Close all 3 service isolation valves (items 1).
3. Carefully remove any insulation on the lter drier
(item 2), located at the eductor block (item 3).
4. Relieve the pressure from the circuit into a suit-
able refrigerant recovery container. Filter drier
(item 2) contains a Schraeder valve for this pur-
pose.
5. Loosen the roto lock nut (item 4) at the piping end
of the lter drier (item 2).
6. Remove the lter drier from the eductor block and
discard lter drier and Teon seals (item 5).
7. Install the new Teon seals (items 5) and lter
drier (item 2).
8. Torque nuts (items 4) at each end of lter drier
(item 2) to 60 ft-lb (81 Nm), and replace the lter
drier insulation.
9. Evacuate the air from the lines to 500 microns.
10. Open all 3 service isolation valves (items 1).
11. Restore power to the chiller, the chiller is now
ready to be placed back into service.
LD16669A
1
5
2
5
4
1
1
3
FIGURE 66 - OIL EDUCTOR ASSEMBLY
TO
CONDENSER
TO
COMPRESSOR
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