ACU-RITE ENC 250 Manuel de référence - Page 8

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ENC 250

™

MULTI-SECTION

Scale Tape Installation

End view of

tee slot

Scale Tape

• Place the Scale Tensioner into the tee slot on the left end

of the scale case.

• Retrieve the scale tape from the carton. The scale tape is

shipped in a protective plastic coil. Do not uncoil the tape.

It should be uncoiled as it is inserted into the case. The

tape must be kept free of fingerprints and contaminants.

It is best to wear clean cotton gloves when handling it. If

necessary, the scale tape may be cleaned with cotton cloth

soaked in alcohol or acetone.

• Hook the boss on the scale tensioner through the square

hole in the scale tape to capture the tape and slide the

scale tensioner into the scale case. Note – the gold

rulings on the scale tape must face into the scale

cavity.

End view of

tee slot

• Before inserting the tape completely into the case, check

the tension value on the backside of the scale tape at the

anchor end. Check the value on the label attached to the

right end section, and verify that it is correct.

• The two M3 x 8mm Flat Head Socket Screws must be

removed from the scale anchor block. Continue pushing

the scale tape into the case until the anchor end is flush

with the left side of the case. Make sure that all the

scale tape retainer clips go into the T-slot. If the scale

tape can not be inserted completely by pushing at one end,

the scale tensioner may be pulled along the case with a

small steel ruler from the bottom of the scale case.

Scale Tensioner

Retainer clip

Tape tension value

Anchor block

• Apply a small amount of silicone grease – as a sealant - to

the two M3 x 8mm FHSS.

• Insert the screws through the scale case and thread into

the anchor block. Tighten fasteners completely.

Left end of

travel mark

Equal

[0.65"] 16.5mm

• Draw a line onto the front of the scale case at a distance of

[0.65"] 16.5mm from the left end. Similarly draw a line

onto the front of the scale case at a distance of [2.46"]

62.5mm from the right end. These are the end-of-travel

marks. The ends of the reading head must not travel

beyond those lines.

• Find the center distance between the two lines and draw

another line onto the front of the scale case. This line

represents the center of travel. The reading head must be

mounted so that it is centered under this line when the

machine carriage is located at the center of its axis travel.

Lip seal keying feature

• Insert a lip seal into the front keyhole slot (the one closest

to the scale tape) until it protrudes at least 1/2" [12mm]

from the far side. Lip seals must be installed with the

keying features opposing each other.

This view shows lip seal orientation.

It is not required for them to be inter

locked during installation.

• Similarly, insert the rear lip seal. Make sure that the lip

seals are not under excessive tension in the case.

Normally, the lip seal can be pulled through completely

with a pair of needle-nose pliers.

Right end of

Center of

travel mark

Equal

[2.46"] 62.5mm

Acu-Rite Companies Inc.