Trouble Shooting; Maintenance And Cleaning - Techcon Systems Ts5322 Benutzerhandbuch

7.

TROUBLE SHOOTING

PROBLEM POSSIBLE CAUSE
Fluid pressure too low
Operating pressure too
low
No Fluid Flow
Dispense tip clogged
Fluid cured in valve
chamber
Fluid pressure fluctuating
Valve operating pressure
Inconsistent
is too low
Fluid Flow
Valve open time is not
consistent
Air trapped in fluid housing
Fluid drools after the
Air trapped in fluid housing
valve closes, eventually
t i
Suck back cap fully closed
Damaged or worn seals
Steady Drip
Fluid pressure exceeds
500 psi
Fluid pressure exceeds 90
psi
Fluid leaks out of oil Upper seals worn or
port damaged
Techcon Systems is an OK International Brand
Copyright © All Rights Reserved • TS941 Rev 04/04
7
CORRECTION
Increase fluid pressure
Increase air pressure to 70 psi (4.8
bars)
Replace tip
Clean valve thoroughly
Make sure fluid pressure is
constant
Increased valve pressure to 70 psi
(4.8 bars)
Check to make sure the valve
controller is providing a consistent
output
Purge valve
Purge valve
Turn cap counterclockwise until
dripping stops
Replace seals
Lower fluid pressure
Lower fluid pressure
Replace seals
8.

Maintenance and Cleaning

Tool required: O-ring removal tool (P/N TSD1597-7), Snap ring pliers.
Normally, purging the valve with appropriate flush material or solvent after use is
sufficient for cleaning. However some material may cause a buildup in the valve
chamber, in this case periodic and thorough cleaning will be required.
CAUTION: Make sure the fluid pressure is released before disassemble the valve.
NOTE:
•
To replace seals please order seal kit part number: 5322-SEALKIT.
•
To repair valve please order valve kit part number: 5322-VALVEKIT.
8.1 CLEANING AND SEALS REPLACEMENT: Refer to figure 5.0
1) Release fluid pressure
2) Disconnect fluid line and remove fluid inlet fitting.
3) Disconnect valve air hose.
4) Hold the fluid housing (6) and rotate the air cylinder (18) counterclockwise. When
completely un-threaded, pull the two valve segments straight apart to separate.
5) Inspect o-ring (17), replace if damaged.
6) Remove four socket head cap screws (12) from the outlet block (11).
7) Pull the outlet block (11) away from the fluid housing (6).
8) Inspect o-ring (10), replace if damaged.
9) Using snap ring pliers, remove retaining ring (8).
10) Remove stainless steel washer (9) from fluid housing (6).
11) Remove upper seal (14).
12) Clean the fluid housing (6), outlet block (11), spool assembly (5), upper and lower
seal (13)(14).
NOTE: Avoid using sharp probes for cleaning. Any nicks or scratches on the seal or
the surfaces of the spool assembly may cause leakage.
13) Inspect both upper (14) and lower seals (13), replace seals if damaged found.
14) Insert upper seal (14) into fluid housing (6) using a soft rod (such as wooden dowel or
plastic). Make sure the o-ring side is facing down.
15) Insert stainless steel washer (9) and secure with retaining ring (8)using snap ring pliers.
16) Insert lower seal (13) into outlet block (11). Make sure the o-ring side is facing up.
17) Insert o-ring (10) into outlet block (11).
18) Reinstall outlet block (11) to fluid housing (6).
19) Lubricate o-ring (17) with o-ring grease.
Techcon Systems is an OK International Brand
Copyright © All Rights Reserved • TS941 Rev 04/04
8