Maintenance and Repair 4 - 23
4.15 Flow Restrictor Maintenance

(Models LS1500 through LS2580)

WARNING!
Ensure that the dryer and any associated prefilters
and afterfilters are valve isolated and fully depressur-
ized before attempting to remove or disassemble any
components or subassemblies. Failure to do so may
result in serious personal injury and/or equipment
damage.
1. Clean and inspect the assembly. Check operation of
the assembly. If a tendency to bind, erratic operation,
damage and/or excessive wear is noted, disassemble
and repair the assembly.
DISASSEMBLY/ASSEMBLY INSTRUCTIONS
1. Disassemble/Build the flow restrictor assembly in the
order shown by the Flow Restrictor Assembly Dia-
gram (Figure 4.14).
A) Hand tighten studs in sequence shown in Detail
A.
B) Tighten studs in sequence shown to 30 ft-lbs.
torque.
C) Leak check valve.

FLOW RESTRICTOR ASSEMBLY

Figure 4.13
Figure 4.14
FLOW RESTRICTOR ASSEMBLY
Item Description Total
1 Valve Body 1
2 Actuator Subassembly 1
3 Valve Flange 1
4 O-Ring 2
5 Hex Nut 8
6 Threaded Stud 4
PURGE FLOW
5
ACTUATOR SUBASSEMBLY
6
5
2
4
1
4
3

DETAIL 'A'

TORQUE SEQUENCE
4
13
2