Drain-All 870100 Installation Manual - Page 3

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START-UP

1. Close control air line and balance line

needle valves as well as inlet isolation

shut-off valve.

2. Bring up system pressure.

3. Fully open control air needle valve.

Check for leaks in control air line. Push

the "Push to Test" button on top of the

Model 1700

to verify the air cylinder

strokes, opening the discharge ball valve.

Leave control air needle valve open.

4a. Applications where the balance line

is connected back to vessel being

drained. Fully open the balance line nee-

dle valve. Check for air leaks on balance

line and fittings. Leave balance line nee-

dle valve fully opened. The needle valve

can be used as an isolation shut-off valve.

4b. Applications where the balance line

needle valve is vented to atmosphere

or connected to a header pipe leaving

the vessel being drained. Open the bal-

ance line needle valve only enough to

ensure a small amount of air can flow

through it. This will be adjusted in a later

step.

5. Gradually open the inlet isolation shut-

off valve to the full open position to

allow liquid to enter the Model 1700

The reservoir will fill until the float is

raised to the upper position actuating the

control circuit extending the air cylinder

and opening the ball valve. Once the dis-

charge starts, the liquid level in the

Drain-All reservoir begins to lower. This

lowers the float back to its original posi-

tion which deactivates the control circuit

closing the ball valve.

6a. Applications where the balance line

needle valve is vented to atmosphere

or connected to a header pipe leaving

the vessel being drained. With liquid in

the reservoir and the liquid discharge ball

valve in the closed position, close the

balance line needle valve. As you slight-

ly open the balance line needle valve,

look into the translucent sleeve just

above the inlet port and look for a trickle

022802 Model 1700-IG

START-UP & TROUBLESHOOTING

of small bubbles. Continue to open the

needle valve until you see these bubbles

indicating a proper setting for the balance

line needle valve. Remember that bub-

bles will only be seen if there is a pres-

sure differential (when balance line is

vented to atmosphere or to a header leav-

ing the vessel being drained).

6b. When the balance line is connected

back to the vessel being drained, there is

no pressure differential between the inlet

and balance line and there will be no

bubbles in the liquid. In this application

keep the balance line needle valve in this

connection fully open. The top of the

Model 1700

of the vessel being drained.

7. Once properly installed, no further

adjustments to the Model 1700

essary. The Model 1700

matic, discharging on demand as needed

when liquid accumulates.

TROUBLESHOOTING

1. Water does not enter.

A. Balance line isolation shutoff valve is

closed which does not allow liquid to

enter the Model 1700

Solution: Adjust balance line needle

valve per installation instructions.

B. Liquid inlet shut-off valve is closed.

Solution: Fully open liquid inlet shut-off

valve.

C. Vessel drain, and/or pipe from vessel

drain to Model 1700

Solution: Clear obstruction.

D. Location of balance line connection

causes higher balance line pressure than

liquid inlet pressure. Model 1700

"back flowing".

Solution: Refer to installation instruc-

tions for proper balance line installation.

2. Fills and will not drain.

A. Control air line needle valve is closed,

or not fully open.

Solution: Fully open control air needle

valve to full open.

must be below the bottom

are nec-

is fully auto-

inlet is plugged.

Page 3

B. Lack of adequate air pressure on con-

trol air line.

Solution: Provide more than the mini-

mum required PSIG to control air line

connection per the product specification.

If there is not enough control air pressure

available, there are lower control air

pressure options available - contact your

distributor for details.

C. Hole in valve stem clogged.

Solution: Clear obstruction. Do not alter

hole diameter.

D. Filter element clogged or dirty.

Solution: Replace part.

3. Discharge ball valve stays open.

A. Center tube magnet installed upside

down, i.e., north and south poles

reversed.

Solution: Reinstall center tube magnet

rotating it 180 degrees, end for end.

B. Bleed hole for air cylinder clogged.

Solution: Clear bleed hole on side of air

cylinder located on opposite side from

control air connection to the cylinder. Do

not alter hole diameter.

C. Center tube magnet stuck or not prop-

erly sealing against valve stem. This can

result from excessive oil and water con-

taminates allowed to get into the control

air lines and then into the center tube,

thereby coating the center tube magnet

and causing it to stick.

Solution: Clean center tube and center

tube magnet and reassemble. Also, if

possible, connect the control air line to a

clean dry air source which will prevent

reoccurrence.

4. Excessive bubbling action in reser-

voir.

A. Air leak in balance line and/or fittings.

Solution: Refer to installation instruc-

tions and start-up procedures.

B. Balance line needle valve opened too

far.

Solution: Adjust balance line needle

valve per installation instructions.