Yokogawa FC20 User Manual

User’s

YOKOGAWA

Manual

Model FC20
Cleaning Systems

IM 12B6V1-01E-E

5th edition

4th edition

2

TABLE OF CONTENTS

1. INTRODUCTION ............................................................................................................3

1-1. General...................................................................................................................3

1-2. Cleaning system .....................................................................................................3

1-3. Selection criteria .....................................................................................................3

1-4. Compatibility...........................................................................................................4

1-5. Warranty and service ..............................................................................................4

2. SPECIFICATIONS ..........................................................................................................5

2-1. Brush cleaning .......................................................................................................5

2-2. Chemical cleaning ..................................................................................................6

2-3. Models and suffix codes.........................................................................................6

3. DESCRIPTION ...............................................................................................................7

3-1. Brush cleaning system ...........................................................................................7

3-1-1. General ...............................................................................................................7

3-1-2. Driving mechanism (electric) ................................................................................7

3-1-3. Driving mechanism (pneumatic ..........................................................................7

4. INSTALLATION ..............................................................................................................8

4-1. Unpacking and checking ........................................................................................8

4-2. Installation site ........................................................................................................8

4-3. Brush cleaning .......................................................................................................9

4-3-1. Brush holder .......................................................................................................9

4-3-2. Driving mechanism (electric) ................................................................................9

4-3-3. Wiring the driving mechanism (electric)...............................................................10

4-3-4. Driving mechanism (pneumatic)..........................................................................10

4-3-5. Control unit for driving mechanism (pneumatic) ..................................................10

4-3-6. Connecting control and driving mechanism (pneumatic) .....................................11

4-4. Chemical cleaning ..................................................................................................11

4-4-1. Spray unit............................................................................................................11

4-4-2. Connecting the spray unit ...................................................................................11

5. ADJUSTMENTS ...........................................................................................................12

5-1. Brush cleaning .....................................................................................................12

5-1-1. Brush adjustments ............................................................................................12

5-1-2. Driving mechanism (pneumatic).........................................................................12

6. DIMENSIONS ...............................................................................................................13

6-1. Spare parts list .....................................................................................................15

7. INSTALLATION OF CHEMICAL CLEANING SYSTEMS HCN 2/3/4/F .....................16

IM 12B6V1-01E-E

1. INTRODUCTION

3

1-1. General

For industrial applications and particularly
for automatic process measurements, it is
of the greatest importance that the
sensitive part of a glass electrode and the
flow diaphragm of a reference electrode
are kept clean. Often it is not practical to
interrupt a process for cleaning the
electrodes, an accurate indication is
required over a long period, replacing the
electrodes is difficult, etc.

TUBING

O-rings

(11x3)

PISTON

UNIT

There, an automatic cleaning mechanism
may be the solution.
YOKOGAWA manufactures two different
cleaning systems for pH and/or ORP
(Redox) measurements:

- chemical cleaning

- brush cleaning
a. pneumatically driven
b. electrically driven

CONTROL

UNIT

O-RINGS

BRUSH HOLDER

K1547PP
(spare tubing, EPDM)

Fig. 1 Brush Cleaning
(pneumatical driven)

Fig. 2 Brush Cleaning
(electral driven)

1-2. Cleaning systems

The cleaning elements have standardised
dimensions for mounting in flow and/or

Model Type Material

FF20-P43 Flow fitting Polypropylene
FF20-F43 Flow fitting Polyvinylidene fluoride
FF20-S43 Flow fitting Stainless steel
FD20-P47 Immersion fitting Polypropylene
FD20-F47 Immersion fitting Polyvinylidene fluoride
FD20-S47 Immersion fitting Stainless steel
FS20-V42 Subassembly flow fitting PVC
FS20-S43 Subassembly flow fitting Stainless steel

immersion fittings. These fittings have the
following model codes:

Detailed specifications of the fittings are on separate sheets
(see GS 12B6K1 and GS 12B6K2)

IM12B6V1-01E-E

4

1-3. Selection criteria

The table below indicates the recommended
cleaning method for your specific application.

Selection criteria

Mechanical Chemical

Applications with: Brush Acid Base

Oils, fats

Resins (wood, pulp) X

Emulsions of latex X

Fibers (paper, textile) X

Crystalline precipations

(carbonates) X XX

Amorpheus precipations

(hydroxides) X XX

1-4. Compatibility

The Yokogawa analysers model number
PH402 and PH450 is equipped with a wash
timer function to control the chemical
cleaning system. Detailed information is
given on sheet and GS 12B6B3-E-E
(PH402) and GS 12B6B5-E-E (PH450).

1-5. Warranty and service

Products and parts are warranted to be free
from defects in workmanship and material
under normal use and service for a period
of typically twelve months from the date of
shipment by manufacturer. The sales
organisation has the possibility to deviate
from this typical warranty period and the
actual terms and conditions as specified in
the sales order must be consulted.
Damages, caused by wear and tear,
inadequate maintenance, corrosion and
attack by chemical processes are excluded
from this warranty coverage.

Any defective goods need to be sent to
the service of the sales organisation for
repair or replacement and the returned
material should be accompanied by a letter
of transmittal, which should include the
following information:

1. Part number, model code and serial
number

2. Date and number of sales order

3. Length of time of service and type of
service

4. Description of the faulty operation of the
device and the circumstances of the
failure

5. Pressure, temperature, process
compensation and all other process
conditions or environmental circum­stances which are related to the instal­lation and possibly failure of the device

6. Statement as to whether warranty or
non-warranty service is requested

7. Complete shipping and billing
instructions for return of material and
name, phone number of contact person
that can be approached for further
information.

The returned goods that have been in
contact with process fluids must be
detoxified and disinfected prior to shipment
for the health and safety of our employees.
Material Safety Data sheets must be
included for all components of the
processes in which the cleaning system
has been used.

The shipping address where the goods
have been returned is specified on the
original sales order or on the back page of
this manual.

IM 12B6V1-01E-E

2. SPECIFCATIONS

2-1. Brush cleaning

Brush holder

Material

- Body : a. Stainless steel

- Brush : Horse hair (in PVDF holder)

Process conditions : Max. 1 MPa (10 bar) at 100 °C
Weight : Approx. 120 g
Mounting : In Yokogawa flow or immersion fittings (4-hole)

Driving mechanism (electrical)

Supply (see note)

- Voltage : 24 V AC (± 10 %)

- Frequency : 50/60 Hz

- Consumption : Max. 4 VA

Cleaning frequency : 2 strokes per minute
Angle : Rotation of 40 ° (swing)
Electrical connection

- Connector : Gold plated spring O-connector (for standard Yokogawa

- Screw thread :1/4” BSPP

Material

- Driving system : Stainless steel AISI 316

- Driving shaft : Stainless steel AISI 316

- Cap : Silicone rubber

- Connector holder : Polyvinylidene fluoride (PVDF)

- Mounting nut : Ryton R4
Weight : Approx. 1 kg

b. Epoxy
c. Silicone rubber
d. Epoxy resin

electrode cable Model WU20-PC

)

5

Driving Mechanism (pneumatic)

Piston unit

Air supply : Adjustable (via the connected control unit)

Cleaning frequency :1/4.... 2 strokes per minute (adjustable on the control unit)

Angle : Rotation 40°
Air connectors : ø4 mm (external) (IN1 and IN2)
Material

- Body : Brass

- Mounting gland : Stainless steel AISI 316
Weight : Approx. 1 kg

Control unit

Air supply : 140 kPa (1,4 bar) pressurised air
Ambient temp. range : -10 to 60 °C
Housing

- Material : Aluminium case with chemical resistant lacquer (IP65)

- Entries : Air connector ø6 mm

- Dimensions : See dimensional drawings

- Mounting : Wall mounting (for fixing dimensions, see dimensional

- Weight : Approx. 2,5 kg

drawings)

IM12B6V1-01E-E

6

Supply (see note)

- Voltage : 24 V AC (± 10 %)

- Frequency : 50/60 Hz

- Consumption : Max. 4 VA

Cleaning frequency : 2 strokes per minute
Angle : Rotation of 40° (swing)
Electrical connection

- Connector : Gold plated spring O-connector (for standard Yokogawa

- Screw thread :1/4” BSPP

Material

- Driving system : Stainless steel AISI 316

- Driving shaft : Stainless steel AISI 316

- Cap : Silicone rubber

- Connector holder : Polyvinylidene fluoride (PVDF)

- Mounting nut : Ryton R4
Weight : Approx. 1 kg

2-3. Chemical cleaning system

Features

• The EXA pH450 analyser has a built-in timer and HOLD circuit.

• Built-in (no return) nozzle to prevent penetration of the process liquid into the cleaning system.

Materials

- Nozzle : Hastelloy

- O-rings : EPDM rubber

- Mounting set : Stainless steel

- Tubing : 1/4” (OD Ø) Nylon tubing

- Process cond. : Max. 1 MPa (10 bar) at 100 ºC

electrode cable, Model WU20)

Mounting

K1547PA : /HCN2, 2-hole flow-, insertion fitting (PH20)
K1547PA : /HCN3, 3-hole flow-, insertion-, immersion fitting
K1547PB : /HCN4, 4-hole flow-, insertion-, immersion fitting
K1547PJ : /HCNF, back-end mounting on FU20/PH20

2-4. Model- and suffix codes
Mechanical cleaning system

Model Suffix Options Description

FC20 Cleaning system
Design -VE Brush cleaning

Options /T 10 mtr. nylon tubing

Spareparts Chemical cleaning system

Type Description

K1547PA Complete cleaning system HCN2, HCN3
K1547PB Complete cleaning system HCN4
K1547PJ Complete cleaning system HCNF for back-end

K1547PP EPDM spraying valve HCNX nozzle (5 sets)

IM 12B6V1-01E-E

code code

(electrical driven)

-VP Brush cleaning
(pneumatical driven)

6.35 mm OD (1/4”)

mounting on FU20/PH20