ATECH BCV 700 User manual

Automatic Bottom Blowdown Control Valve
IM-BCV70022K
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com
BCV 700
Installation and Operating Instructions
Automatic Bottom Blowdown Control Valve

Automatic Bottom Blowdown Control Valve
1. SAFETY INFORMATIONS 3
2. DESCRIPTION & FUNCTIONS 4
3. TECHNICAL SPECIFICATIONS 5
3.1. BCV 700 Bottom Blowdown Control Valve 5
3.2. LS 700 Limit Switch 5
3.3. YV Solenoid Valve 5
4. INSTALLATION & WIRING 5
4.1 Valve Installation 5
4.2 Wiring 6
4.3 Compressed Air Supply 7
5. COMMISSIONING 8
6. MAINTENANCE 8
IM-BCV70022K Page 1
CONTENTS
ATECH ENDÜSTRİYEL ÜRÜNLER SAN. VE TİC. LTD. ŞTİ.
www.atech-ltd.com
İpkas San. Sitesi 16A Blok No: 37 İkitelli/İstanbul - Turkey
T: +90.212.438 42 38 F: +90.212.438 42 58
E: [e-mail] W : www.atech-ltd.com
BCV 700
"Steam & Control Technologies"

Automatic Bottom Blowdown Control Valve
1. SAFETY INFORMATIONS
Safety!
National and local regulations must be taken into consideration while electrical or mecanical installation.
Warning!
Please make sure to remove the main supply before installation and maintanance.
Otherwise this may cause damage to the product, personal injuries or even death.
Before Blowdown Valve assembly, disassembly and maintenance ensure that any pressure
is isolated and safely vented to atmospheric pressure (0 bar g). Otherwise steam or hot water
leakage may occur. If there is a stop valve before Blowdown Valve, consider this valve closed
and labelled.
Touching to hot surfaces may hurt personnel. When installing or displacing the valve, please
make sure that all equipment temperatures are in safe level.
All assembly, disassembly and maintenance should only be carried out when the system is cold.
The manufacturer expressly rejects any claims for damage caused by improper installation.
IM-BCV70022K Page 2
Installation, commissioning and maintenance of this device must be done by a qualified person in compliance with the
operating instructions. Otherwise device and related equipments may be damaged and personnel may be injured.
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com

Automatic Bottom Blowdown Control Valve
2. DESCRIPTION & FUNCTIONS
The Bottom Blowdown Valve BCV 700 opens in response to a signal from the Smart Bottom Blowdown Controller BC 700
according to determined frequency and duration of the blowdown.
The bottom blowdown valve enables a fast opening which is necessary for the blowing down. This fast opening causes
a suction in the boiler whereby deposits solids are flushed out of the boiler.
Please refer to "BC 700 Installation and Operation Manual for Automatic Bottom Blowdown Controller" for detailed
information before assembly.
: Aliminyum
Figure 1 Automatic Bottom Blowdown System installation.
IM-BCV70022K Page 3
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com
Steam Boiler
BCV 700
Bottom Blowdown
Control Valve
BC 700
Bottom
Blowdown
Controller

Automatic Bottom Blowdown Control Valve
3. TECHNICAL SPECIFICATIONS
3.1. BV 700 Bottom Blowdown Control Valve
Max. Operating Temperature : 239°C
Max. Operating Pressure : 32 bar g
Nominal Pressure : PN 40
Valve Body : Stainless Steel
Connection : Flanged
Operating Principle : Spring return actuator
Weight : 10,5 kg (for DN 40)
3.2. LS 700 Limit Switch
Type : Mechanical Switch, open/close position indicator
Enclosure : IP 65
Max. ambient temperature : 80 °C
Weight : 0,15 kg
3.3. YV 732 Namur Solenoid Valve
Type : 1/4’’ - 5/2
Supply voltage : 24 V, 220 V
Max. ambient temperature : 80°C
Operation pressure : 6-8 bar
Weight : 0,15 kg
4. INSTALLATION and WIRING
Installation, commissioning and maintenance of this device must be done by a qualified person in compliance with the
operating instructions.
4.1 Installation
The automatic Bottom Blowdown Valve BCV 700 must connected to the outlet of the boiler bottom connection with
"ARROW" as shown below. proper sealing must be used between flanged.
Figure 2 Bottom blowdown valve connection.
IM-BCV70022K Page 4
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com

Automatic Bottom Blowdown Control Valve
4.2 Wiring
Wiring between Smart Bottom Blowdown Controller BC 700 and namur solenoid valve, 3x1 mm2 cable can
be used. Wiring between controller and limit switch, 2x1 mm2normal cable can be used.
Limit Switch Wiring
Namur Wiring Compressed air supply
Ø8mm pipe
Figure 3 Bottom Blowdown Valve wiring and compressed air supply.
Figure 4 Bottom Blowdown Valve wiring.
IM-BCV70022K Page 5
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com
Limit Switch
Namur
Pneumatic Actuator
Bottom
Blowdown
Valve
Limit Switch
Namur
ATECH BC 700
Smart Bottom Blowdow
Controller

Automatic Bottom Blowdown Control Valve
4.3 Compressed Air Supply
To fit solenoid valve assembly to the Bottom Blowdown Valve actuator:
Connect the compressed air supply to port 1 (¼" BSP) on the solenoid valve which is fitted to the actuator.
as shown at the Figure 5. The air supply to the solenoid valve must be in 8 mm minimum diameter pipe.
Compressed air supply pressure must be min 5 bar g and max 8 bar g.
(showing inlet and exhaust ports on the namur valve)
Figure 5 To fit solenoid valve assembly to the Bottom Blowdown Valve actuator.
IM-BCV70022K Page 6
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com
Compressed Air Supply
Port 1
Cable entrance
Namur
Cable entrance

Automatic Bottom Blowdown Control Valve
5. COMMISSIONING
• Be sure that all phase and neutral ends are connected to the right terminals.
• Be sure that compressed air supply is connected to the right port on the Namur/Solenoid Valve.
• From the Smart BC 700 Bottom Blowdownd Controller, the valve should be tested open and close the valve correctly.
Please see the "Smart BC 700 Bottom Blowdownd Controller Installation and Operating Instructions" for this.
6. MAINTENANCE
Please make sure to remove the main supply before detach the device.
Otherwise this may cause damage to the product, personal injuries or even death.
When any fault situation occurs or maintenance is necessary, please contact with “
“Atech Service Department”
It is recommended to perform the function tests regularly.
IM-BCV70022K Page 7
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com

Automatic Bottom Blowdown Control Valve
NOTES:
IM-BCV70022K Page 8
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com

Automatic Bottom Blowdown Control Valve
NOTES:
IM-BCV70022K Page 9
BCV 700
"Steam & Control Technologies"
www.atech-ltd.com

Automatic Bottom Blowdown Control Valve
NOTES:
IM-BCV70022K Page 10
www.atech-ltd.com
BCV 700
"Steam & Control Technologies"

Automatic Bottom Blowdown Control Valve
IM-BCV70022K
www.atech-ltd.com
ATECH ENDÜSTRİYEL ÜRÜNLER SAN. VE TİC. LTD. ŞTİ.
İpkas San. Sitesi 16A Blok No: 37 İkitelli/İstanbul - Turkey
T: +90.212.438 42 38 F: +90.212.438 42 58
E: [e-mail] W : www.atech-ltd.com
BCV 700
"Steam & Control Technologies"