Section XV. MAINTENANCE OF ERDLATOR COAGULATED WATER PIPING, TUBING AND VALES

Figure 4-63. Waste Water Piping Between Wet Well and Erdlator Tank Outlet Piping, Disassembly and Reassembly.

Figure 4-64. Erdlator Coagulated Water Tubing Between Erdlator Tank and Diatomite Dilution Tank, Removal, and Installation

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Section XV. MAINTENANCE OF ERDLATOR COAGULATED WATER PIPING,

TUBING AND VALES

WARNING

c. Installation. Refer to figure 4-64 and install

the coagulated water tubing between the erdlator

tank and the diatomite dilution tank.

Dry cleaning solvent, P-D-680, used to

clean parts, is potentially dangerous.

Avoid repeated and prolonged

4-60. Coagulated Water Piping Between Er-

breathing of the vapors and skin con-

dlator Weir Box and Sludge Concentrator.

tact with the liquid. Do not use near

a. Removal. Refer to figure 4-65 and remove the

open flame or excessive heat. Use in a

coagulated water piping between the erdlator weir

well-ventilated area. The flash-point

box and the sludge concentrator.

of P-D-680 is 100-138 F (38-59 C).

b. Disassembly. Refer to figure 4-66 and disas-

smeble the piping.

4-59. Coagulated Water Tubing Between Er-

c. Clean, Inspect and Repair.

dlator Tank and Diatomite Dilution Tank.

(1) Clean all parts with dry cleaning solvent

a. Removal. Refer to figure 4-64 and remove the

P-D-680.

coagulated water tubing between the erdlator tank

(2) Inspect all parts for damage.

and the diatomite dilution tank.

(3) Repair or replace all damaged parts.

b. Clean, Inspect and Replace.

d. Reassembly. Refer to figure 4-66 and reas-

(1) Clean all fittings with dry cleaning sol-

semble the piping.

vent P-D-680 and blow the tube out with com-

pressed air.

e. Installation. Refer to figure 4-65 and install

the coagulated water piping between the erdlator

(2) Inspect the tube and fittings for damage.

weir box and the sludge concentrator.

(3) Replace all damaged parts.

Section XVI. MAINTENANCE OF DIATOMITE FILTER GAGES

AND AIR RELEASE VALVE

WARNING

fluent side of the filter elements.

b. Removal. Refer to figure 4-67 and remove the

Dry cleanirig solvent, P-D-680, used to

air release valve.

clean parts, is potentially dangerous.

c. Clean, Inspect and Replace.

Avoid repeated and prolonged

(1) Clean the valve with dry cleaning solvent

breathing of the vapors and skin con-

P-D-680.

tact with the liquid. Do not use near

open flame or excessive heat. Use in a

(2) Inspect the valve for cracks, dents and

well-ventilated area. The flash-point

warped flanges. Check the operating lever in all

of P-D-680 is 100-138 F (38-59 C).

positions to see if it will move freely.

(3) Inspect the gasket for cracks, and deterio-

481. Air Release Valve.

ration.

a. General. The air release valve is located on

(4) Replace the valve if it is unserviceable or

top of the filter housing cover. It is used for re-

damaged. Replace the gasket if it is defective.

leasing trapped air in the filter housing cover, or ef-

4-111

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