Roland ep-5 Service Manual download pdf (Page 8)

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3. Air requirements

4. Installation

Maximum supply pressure is 1 MPa (150 psi).

Supply air shall be clean, dry and free from oil, water, moisture, foreign parts and

debris.

The air shall be freeze-dried or similar to a dew point of at least 10°C (18°F) below

lowest expected ambient temperature.

A <40µ filter/regulator is recommended to be installed as close to P5/EP5 as

possible to ensure proper supply air quality.

Before making pneumatic connections to the positioner, it is recommended that

the supply air lines are opened up and allowed to vent for 2-3 minutes to clear any

debris from the line. It is further recommended that a large paper bag is used to

collect any oil or humidity that may be present in the line during this purging,

direct the air flow into the bag. Should exessive amounts of oil and/or humidity

be present at this stage, a review of the pneumatic system should be carried out

and the problem corrected.

Poor air quality is one of the major causes of premature failure

of pneumatic equipment.

P5 mounts on to the actuator using either the ISO F05 holes 4 and a PMV ISO

mounting kit or by using the optional mounting adaptor and screws 5 to

mount P5 on to existing PMV mounting kits.

Proper alignment of the positioner spindle to the actuator shaft is very

important since improper alignment can cause excessive wear and friction to

the positioner.

The spindle/positioner shaft assembly allows for quick and simple spindle

changes. To ensure the proper connection, the spindle 3 has a spring clip 2

that must be properly installed. A solid ”click" should be felt when assembling

the two pieces insuring that the two flats 1 are engaged into the positioner

shaft groove.

The spindle can be removed, by inserting two screwdrivers under the two

tapered surfaces of the spindle and bending carefully. When the spring clip

releases the spindle will eject.

5 4

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Roland ep-5 Service Manual Page 8