34.1. Daily Preventive Maintenance Checks and Services Chart

(As added by C 2. 26 Aug 63), add paragraphs 34.1, 34.2, and 34.3

34.1. Daily Preventive Maintenance Checks and Services Chart

Seq

Item

Procedure

Reference

No.

Exterior surfaces

Clean exterior surfaces of enlarger (fig. 1, 2, 3.1, and 3.2).

Lenses

Check condenser and projection lenses (fig. 2, 3.1, and 3.2) for

dust, dirt (para 34.3), scratches, and cracks.

Condenser lens

Check condenser lens assembly (fig. 1 and 3.2) for secure en-

assembly.

gagement with knurled screws (para 17b); tighten loose

knurled screws.

Operation

Operate equipment according to equipment performance

Para 36.

checklist (para 35), items 1 through 11, 13, 14, and 16

through 19.

34.2. Weekly Preventive Maintenance Checks and Services Chart

Seq

Item

Procedure

No.

Cords and cables

Check power cords and power and adapter cables for cut or frayed insulation

(fig. 11, 12, 13, and 13.1).

Carrying cases

Check carrying cases (fig. 6 through 9.4) for wear and breakage; check cover

for a secure fit.

Minor components

Check minor components (fig. 4, 5, 5.1, and 5.2) for dirt, wear, and breakage.

Item No. 5, second line. Change "(and PH-

34.3. Cleaning

639(*)/TF)" to PH-639(" )/TF, EN-91A, and EN-91B.

Inspect the exteriors of the enlarger (fig. 1, 2, 3,

Item No. 7a. Delete "(par. 33b)." Item No. 9,

3.1, and 3.2), minor components (fig. 4, 5, 5.1, and 5.2),

second line. Delete "(par. 34b)."

and carrying cases (fig. 6 through 9.4). The exterior

Item No. 10, second line. Change "(par. 33b)"

surfaces should be free from dust, dirt, grease, and

to (para 34.3).

fungus.

Page 47, paragraph 35b, chart, "Action or

a. Remove dust and loose dirt with a clean, soft

condition" column.

cloth.

Item No. 15 (as changed by C 2, 26 Aug 63).

Change "par. 26b(2)-(9))" to (para 27b(2) through (9)).

Warning: Cleaning compound is flammable and its

Page 49, paragraph 36b(2) (page 18 of C 3).

fumes are toxic. Provide adequate ventilation. Do

Make the following changes: Heading. Change

not use near a flame.

"(EN-16(1))" to EN16(1) or EN-91B.

b. Remove grease, fungus, and ground-in dirt

Subparagraph (a). Change "(fig. 3)" to (fig. 3)

from the cases; use a cloth dampened (not wet) with

EN-16(1) and (fig. 3.2) EN-91B.

cleaning compound.

Page 50, paragraph 37. Make the following

c. Clean lenses with lens tissue. If necessary,

changes: Subparagraph c (as changed by C 2, 26 Aug

dampen lens tissue with lens cleaner; wipe lens dry with

63).

clean lens tissue.

Change "(par. 33)" to (para 34.3).

Page 44 (as deleted by C 2, 26 Aug 63).

Subparagraph g. Add the following after subparagraph

Delete figure 32.

g: h. For the EN-91B, proceed as follows:

Page 45 (as deleted by C 2, 26 Aug 63).

(1) Remove the filter wheel or horizontal projection

Delete figure 33.

attachment, whichever is in position on the

Page 46, paragraph 35b, chart, "Corrective

printer.

measures" column.

(As changed by C 2, 26 Aug 63), make the

following changes: Item No. 2, last line. Change "(and

13)" to 13 and 13.1.

Item No. 4a, last line. Change "(and 13)" to (13

and

13.1).