MICRO PRODUCTS GP0, Service Manual

Page: 8 / 21

7.0 PREVENTIVE MAINTENANCE
7.1 AS REQUIRED:
Flashings must be removed from between welding dies and
clamp fingers with a brush. If flashings are attached so
that they cannot be removed by brushing with a soft wire
brush, they may be broken loose with a scraper made of
fiber or wood.
7.2 DAILY:
7.2.1 Check condition of welding dies and clamp fingers. Replace
Dies or clamp fingers when they have become so worn that
stock does not align or there is slipping of stock in the
dies during upset pressure.
7.2.2 Check condition of clamp springs. Replace all broken
springs or springs that have taken a set.
7.2.3 Check movable head for excessive wear. Have new slide
shafts installed and die seats machined if stock does not
line up when placed in die grooves.
7.3 MONTHLY:
7.3.1 Remove welding dies and clean bottom of die surface with
#120 emery cloth. Do this by placing the emery cloth on a
flat surface plate and rubbing the dies on it, keeping the
surface of the die flat. Wipe die and die seat with a
clean cloth and replace, taking care not to touch either
contact surface with the hand.
7.3.2 Check anneal dies and replace worn or broken parts.
7.3.3 Check insulating fiber pin on limit switch adjusting screw
for broken or frayed ends.
7.3.4 Check upset tension spring and clamp springs. Replace if
springs have been over-stretched and will not return to
normal position.
7.4 QUARTERLY:
7.4.1 Disconnect power to welder. Check contacts on operating
and limit switch. Replace those that are burned.
7.4.2 Check anneal dies and replace worn or broken parts.
7.4.3 Check insulating fiber pin on limit switch adjusting screw
for broken or frayed ends.
7.4.4 Check upset tension spring and clamp springs. Replace if
springs have been over-stretched and will not return to
normal position.
8