Chemical Cleaning - YOKOGAWA FF20 Instruction Manuals

Pneumatically driven brush cleaning
(Model FC20-VP)
PARTS AND ACCESSORIES
ORDER NR. DESCRIPTION
K1520NA Tubing (‡4 mm)
K1520NG Brush holder
K1520NB Brush
K1520NG Protection hose
K1520NH Piston
K1520NJ Control unit
4-5-4. Chemical cleaning HCN.
The chemical cleaning system is effective in
processes where deposits can be removed
by a suitable solvent. Good cleaning effects
can be obtained from periodically spraying of
an electrode. EXA PH402 has a built-in wash
timer with programmable washtime, interval
time and relaxation time for automatic
cleaning of the electrodes, preventing
pollution of the pH sensitive parts. After
washing, it is possible to check the response
time of the electrodes. A built-in (no return)
nozzle in the spray unit prevents penetration
of the process liquid in the cleaning system.
The standardised dimensions allow mounting
in all flow-, insertion- and immersion fittings
of Yokogawa as well as back-end mounting
on the 4-in-one pH/Redox electrodes.
Features
• The EXA pH402 analyzer has a built-in
timer and HOLD circuit.
• Built-in (no return) nozzle to prevent
penetration of the process liquid into the
cleaning system.
CONTROL
UNIT
TUBING
K1520NA
PISTON
O-RING (11x 3)
BRUSH HOLDER
Figure 4-6
K1547PP
(spare tubing, EPDM)
Figure 4-7
15
PROTECTION
HOSE
K1520NC
O-rings
(11x3)
IM 12B6K1-01E-E