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4 - 20 Maintenance and Repair
4.13 3" Purge and Outlet Check
Valve Maintenance
(Models LS1000 through LS1500)
WARNING!
Ensure that the Dryer is de-energized, valve isolated,
and fully depressurized before attempting to remove
or disassemble any Dryer component or subassem-
bly. Failure to do so may result in serious personal
injury and/or equipment damage.
Note: The purge orifice [4] is specifically sized and drilled
for your dryer. If the purge orifice [4] is lost or damaged,
contact your local Deltech Sales Representative for the
correct replacement.
Note: Do not remove poppet guides [8] from the outlet
check valve cover [2] unless wear or damage necessi-
tates replacement.
1. Clean and inspect all valve hardware upon disassem-
bly. Replace all software and any hardware which
appears damaged or abnormally worn. Closely in-
spect valve poppets [7], check balls [15], purge ad-
justing valve [6] and associated mating-sealing sur-
faces for any faults which could prevent positive seal-
ing.
2. Apply an ultra-thin film of O-ring lubricant to items
[10], [11], [12], [17], and [18]. Do not apply lubricant
to check balls [15] or valve poppets [7].
3" Purge and Outlet Check Valves
Item Description Total
1 Flow Block 1
2 Check Valve Cover 1
3 Valve Housing 1
4 Purge Orifice 2
5 Hex Plug 2
6 Purge Adjusting Valve 1
7 Valve Poppet 2
8 Poppet Guide 2
9 Valve Spring 2
10 Square O-Ring 2
11 O-Ring 1
12 O-Ring 3
13 Sockethead Cap Screw 4
14 Sockethead Cap Screw 4
15 Check Ball 2
16 Valve Guide 1
17 O-Ring 1
18 Gauge Snubber 1
19 Square O-Ring 2