ALAR AUTOVAC 220 A Visual Setup and Operating Instruction

1
ALAR AUTO-VAC 220A Visual Set-up and Operating
Instruction

• Standard Operating Procedures
• for
• The ALAR AV220 Rental Unit
• Updated Jan 2, 2002

2
The ALAR AUTO-VAC 220
3
START UPOPERATION

• Make sure to complete the following steps before
  starting the machine.

4
1. Open main water valve.
1
2
2. Open sludge inlet valve.
Knife
3. Adjust knife 3 away from drum.
5
1
2

• Turn the drum drive on.
• Turn the spray jets on by opening jet valve.
• Scrub the cloth with a wire brush for at least
  one revolution.

3
6
2

• Empty the filter pan of debris and scrub water,
  so as not to contaminate the cake.
• When done cleaning the filter cloth, close the
  drain valve located on the right side of the
  drum.
• Make sure valve is closed before adding DE
  slurry!!

7

• Turn filter aid agitator ON.
• Add a 50 pound bag of Diatomaceous Earth (DE)
  into the filter aid tank. To build a thicker
  cake, use 1 ½ to 2 bags of DE.

1
2. Filter Aid Tank
2. DE, 50lb Bag
8

• Turn the filter aid tank water valve to ¾ open.

1

• Let the filter aid material overflow to filter
  pan.

2. Let the water overflow until the pan is 1/3
full.
9

• Turn the filter agitator switch ON.
• Turn the drum drive switch ON.
• Set the drum speed to 60 while pre-coating.
• When the pan is 1/3 full turn the receiver pump
  switch ON.
• Turn the vacuum pump switch ON.
• Build filter cake up to 3 on the drum.

1
4
5
2
3
6
10
1. Turn spray jets OFF.
1

• Turn DE water overflow valve OFF.

2
11

• Turn the wheel clock-wise until the knife touches
  the filter cake, and shaves off the uneven areas.

1

• Continue Step 1 until the cake is even left to
  right.

2
NOTE Keep the drum speed at 60 while shaving the
filter cake.
12

• After building the filter cake, turn off the
  filter aid agitator.
• Turn the drum speed to 20.
• Set the knife advance. Lower numbers move the
  knife in faster. Higher numbers move the knife in
  slower. Adjust accordingly.
• Make sure that the filter feed/ sludge transfer
  pump is ON.
• Press the start button. The pump will send the
  water into the filter, and the knife will advance
  until the cake is consumed.

5
1
3
2
13
The filtrate solid should be a consistency of
damp sand or should be a minimum of 50 percent
solid content by weight. The dryness of filtrate
material will vary depending on the solid content
of the water being filtered. Too wet Slow the
drum down or speed up the knife advance. Too
Dry Speed up the drum or slow down the knife
advance.
Drum speed should be adjusted for flow rate and
dryness of solid. 10-20 is the average setting.
Knife advance should be adjusted for dryness of
solids and vacuum pressure. Typical settings are
between 1.5 to 2.5, based on the solids thickness.
NOTE Both dials should read the same number (if
applicable).
14
CLEAN UP

• Turn off sludge transfer pump.
• Check to make sure the KNIFE ADVANCE is OFF.
• Manually advance the knife to approximately 1/8
  from the drum to remove remaining cake.
• Manually back up the knife approximately 3 to
  allow room for the next pre-coat.
• Open the drain valve to drain liquid out the
  filter pan send to drain or pump into holding
  tank and filter with next batch.
• When the filter pan is empty, turn OFF RECEIVER
  PUMP and VACUUM PUMP.

15
Clean Up Continued

• Turn on spray bar to wash filter aid from the
  drum. Wash down filter cloth with a wire brush
  do not use soaps, detergents, or spray cleaners.
  Wire brush only!
• Open the drain valve to drain liquid out the
  filter pan send to drain or pump into holding
  tank and filter with next batch.
• Turn OFF SPRAY BAR, DRUM DRIVE and FILTER
  AGITATOR.
• Wash out additional material in the filter pan
  with a hose.
• Clean off additional solids from the knife with a
  WIRE BRUSH DO NOT attempt to clean with a
  cloth, as this is a sharp blade.
• Close the drain valve.