Alemite 7508 Installatie- en onderhoudsinstructies - Pagina 2

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7504-1, 7506-1 & 7508 Filter / Regulator

Operation

1. Both free moisture and solids are removed automatically by the filter.

2. Manual drain filters must be drained regularly before the separated

moisture reaches the bottom of the baffle or end cap.

3. The filter element should be removed and replaced when pressure

differential across the filter is 10 PSIG (69 kPa).

4. Before turning on the air supply, turn the knob counterclockwise until

compression is released from the pressure control spring. Then turn

knob clockwise and adjust regulator to desired downstream pressure.

This permits pressure to build up slowly in the downstream line.

5. To decrease regulated pressure settings, always reset from a pressure

lower than the final setting required. Example, lowering the secondary

pressure from 80 to 60 PSIG (550 to 410 kPa) is best accomplished by

dropping the secondary pressure to 50 PSIG (350 kPa), then adjusting

upward to 60 PSIG (410 kPa).

6. When desired secondary pressure settings have been reached, push

the knob down to lock this pressure setting.

Service

Caution: Disconnect or shut off air supply and exhaust the

pressure before servicing unit.

Collar (Top)

Knob &

Bonnet Assembly

Control Spring

Diaphragm

Assembly

Insert Assembly

(Includes Upper

Balancing Seal)

O-ring

(Upper Insert)

O-ring

(Lower Insert)

Poppet

Assembly

Spring

(Poppet Return)

Retainer

Seal

Note: Grease packets are supplied with kits for lubrication of seals.

Use only mineral based grease or oils. Do not use synthetic oils such

as esters. Do not use silicones.

Note: After servicing unit, turn on air supply and adjust regulator to

the desired downstream pressure. Check unit for leaks. If leakage

occurs, do not operate - conduct repairs and retest.

Servicing Filter Element -

1. Unscrew the bottom threaded collar and remove bowl.

2. Unscrew the baffle and then remove element.

3. Clean all internal parts and bowl before reassembling. IMPORTANT:

The Filter / Regulator will not operate properly if the deflector is not

installed properly. The deflector must be installed between the filter

stem and the filter body.

4. Install new element.

5. Attach baffle and finger tighten firmly.

6. Replace bowl seal. Lightly lubricate new seal to assist with retaining

it in position.

7. Install bowl into body and tighten collar; hand tight, plus 1/4 turn.

Servicing Regulator -

1. Disengage the adjusting knob by pulling upward. Turn adjusting knob

counterclockwise until the compression is released from the pressure

control spring.

2. Remove the bonnet and bowl assemblies by unscrewing the two

threaded collars.

3. Remove diaphragm assembly from bonnet assembly.

4. Remove filter stem, filter element, poppet assembly, poppet return

spring, (seat) insert and its o-rings.

5. Clean and carefully inspect parts for wear or damage. If replacement

is necessary, use parts from service kits. Clean bowl.

Body

6. Lubricate o-ring and vee packing seals with grease found in service

kits.

Deflector

7. Install poppet return spring, poppet assembly, (seat) insert and its

o-rings, and filter stem. IMPORTANT: The Filter / Regulator will not

operate properly if the deflector is not installed properly. The deflector

must be installed between the filter stem and filter body.

8. Install filter element and firmly tighten baffle onto the filter stem.

Filter Stem

9. Install diaphragm assembly into bonnet assembly. Assemble bonnet

assembly to body and tighten threaded collar from 48 to 52 in-lbs (5.4

to 5.9 Nm).

10. Install bowl into body and tighten collar; hand tight, plus 1/4 turn.

Element

Optional Auto Drain ............................ 343303

Baffle

O-ring

Metal Bowl

Sight Gauge

& Seal

Twist Drain

Repair Service Kits

Description

Collar (Bottom)

40 Micron Element Kit

Sight Gauge Kit

Twist Drain Kit

Relieving Regulator

Repair Kit

2FR100ALE

Auto Drain

O-ring

Nut

7504-1, 7506-1

7508

Part Number

393339-80

393339-86

393339-81

393339-82

393339-85

393339-87

Kit

Symbol

▲





