OPERATION

AUTOMATIC BLOWDOWN INSTRUCTIONS

 

OPERATION— Set the “BOILER PROGRAMMED DUTY”

(IF FURNISHED)

 

switch to “BOILER ON” if the boiler is to be shut down each night.

The Automatic Blowdown is a device which automatically starts

 

Set it to “24-HOUR DUTY” if the boiler is to remain on continuous-

up your boiler in the morning; shuts it down at night and blows down

 

ly 24-hours per day (except during blowdown).

(partially drains) the main boiler drain and the low water cut-off col-

 

Set the tabs on the large timer for the ON and OFF times desired

umn for a predetermined time interval each working day.

 

for the boiler, screw in the small black day-skip tabs if is to remain off

The heart of the unit is an electrically operated straight through

 

during the weekend, etc.

type ball valve. It is specially designed to handle dirty, corrosive flu-

 

If the boiler is on 24-hour duty, set the OFF tab for the time that is

ids and particles without requiring cleaning or the use of a strainer.

 

desired for blowdown. Tzhe ON tab can be ignored, but must remain

Both the valve and the boiler are controlled by an electric control

 

on timer.

unit which indicates with pilot lights when the drain valve is in the

 

The small time delay relay controls the time that the drain valve

opened or closed position and when the boiler is ON or OFF. In addi-

 

remains open. The time is controlled by adjusting knob marked

tion to the automatic control function, the unit has a push button which

 

Blowdown cycle. Counterclockwise decreases, clockwise increases

momentarily de-energizes the boiler and opens the drain valve regard-

 

blowdown time. Time must be adjusted by trial.

less of the time of day.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Timer

 

 

Boiler On

Valve Open

Valve Closed

Programmed Duty

24 Hour Duty

Manual Drain

Automatic Blowdown Control Cabinet

The unit may also be used to blow down boilers which run con- tinuously, day and night.

INITIAL TESTING — Set the switch marked “Programmed

 

 

 

 

 

Valve Actuator

 

duty/24 Hour duty” located on the panel box to the “ON” position.

 

 

 

 

 

 

 

 

 

On the large timer set the “ON” tab at about 8 AM and the “OFF”

 

 

 

 

 

 

 

 

tab at about 8 PM. Set the blowdown cycle dial at “O”.

 

 

 

 

 

 

 

 

 

 

 

Turn the large timer by hand until the “ON” tab passes the “TIME

 

 

 

 

 

 

 

 

NOW” indicator so the “TIME NOW” arrow indicates 10 AM.

 

 

 

 

 

 

 

 

 

Energize the main feed to the “LINE TERMINALS” of the unit.

 

 

 

 

 

 

 

 

The “BOILER ON” pilot light as well as the “VALVE CLOSED”

 

 

 

 

 

 

 

 

light should glow.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hold down the “DRAIN” button for about six seconds. The

 

 

 

 

 

 

 

 

“BOILER ON” light should go out immediately as well as the

 

 

 

 

 

 

 

 

“VALVE CLOSED” light. It takes about 4 seconds for the drain valve

 

 

 

 

 

 

 

 

to open fully at which time the “DRAIN VALVE OPEN” light should

 

 

 

 

 

 

 

 

light. As soon as the “DRAIN” button is released the valve begins to

 

 

 

 

 

 

 

 

close. When it reaches the closed position, the “VALVE CLOSED”

 

 

 

Display View of Automatic Blowdown Control Cabinet

and the “BOILER ON” should light up again.

 

 

 

 

 

 

 

Now turn the wheel on the large timer until the “OFF” tab passes

 

 

 

Blowdown Cycle

 

 

 

the “TIME NOW” arrow. The “BOILER ON” light should go out and

 

 

 

Cycle

30's

 

 

 

 

 

 

 

 

 

 

 

 

Adjustment

 

 

 

 

the valve should begin to open. Once the “VALVE OPEN” light goes

 

 

 

0's

80's

 

 

 

on, the valve should remain open for a few seconds and then auto-

 

 

 

Boiler On

 

 

 

 

 

On/Off Switch

 

 

 

 

matically close. The “VALVE CLOSED” light should light and the

 

 

 

 

Support

 

 

 

 

 

 

 

 

“BOILER ON” light should remain off.

 

 

 

 

 

 

 

 

Valve Closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indicator Light

 

Terminal Block

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

Valve Open

 

7 Day Clock

 

3

 

 

 

 

 

 

 

 

 

 

 

 

Indicator Light

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1FU

 

 

 

 

 

 

 

 

 

Clock

 

w

 

 

 

Support

 

15A

 

 

 

 

 

 

 

 

 

 

 

Prorammed Duty

 

 

B

 

 

 

 

 

 

 

 

 

3

1

A

 

7-Day Timer

Switch

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2.3)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

8

 

 

 

Relay

 

 

1 1CL

2

 

 

 

 

G

 

 

 

1TR

 

Ball Valve

24 Hour Duty

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Control

PB Switch

 

 

Time Delay Relay

1CL

4

P

3

1PB

PR

1CR

 

B

 

 

1LT

 

 

(5)

 

 

 

6

 

 

R

 

 

Boiler On

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manual Drain

 

 

 

 

 

2

 

 

1

 

 

Y

 

 

 

 

 

Boiler Control

Fuse

 

3 2

6 2 10 2 7 11

8

 

 

 

 

 

 

 

 

 

1CR

 

 

 

 

 

 

 

 

 

 

 

Motorized

 

 

 

 

 

(3)

Replace with

 

Terminal Block

 

2PB

 

 

 

1TR

 

 

 

 

 

2LT

 

 

 

Amp Fuse Only

 

 

 

2B

 

 

4

 

 

 

 

 

 

 

 

 

 

 

Component Layout

 

2A

 

 

 

7

R

 

O/R

8

R

 

 

Valve Closed

Exterior Side

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

M

W

2

 

 

 

Blowdown Valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BL

 

 

 

 

 

 

 

11 0

3LT

 

 

Valve Open

 

 

 

 

 

1A

1B

 

 

 

10

B

 

O/BL

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wiring Diagram for Automatic Blowdown

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

 

 

 

 

 

Page 12 Page 14
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Image 13
Chromalox CHPES-6A manual Automatic Blowdown Instructions, If Furnished
Page 12 Page 14

CHPES-6A specifications

The Chromalox CHPES-6A is a advanced electric heating solution designed to meet the demands of various industrial applications. This equipment boasts exceptional performance, reliability, and efficiency, setting a high standard in the electric heating market.

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In summary, the Chromalox CHPES-6A stands out due to its exceptional durability, energy efficiency, and user-friendly interface. With its advanced heating technologies and robust safety features, it is designed to provide reliable performance in various demanding applications, making it an invaluable asset for any industrial operation.
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