C1 Turn Maintenance
This procedure covers routine checks and servicing of C1 Turn equipment to identify maintenance needs and support safe, efficient operation.
PGT - Indy
10/09/2026
C1 Turn Maintenance
The aim is to maintain the equipment’s condition and reliable performance through routine inspection and servicing. This maintenance helps identify wear, damage, and potential faults early, allowing timely corrective action to prevent unexpected breakdowns, minimize downtime, and extend equipment service life.
Shifts Covering Turn
After Mini-Turns: Ensure the vacuum system is ready to use BEFORE turn (CHECK ALL BARRELS & FILTERS)
DD DC dp reading (If above 5.0 unit must be shut down)
Vac DC dp reading (If above 5.0 unit must be shut down)
4 HOURS BEFORE CAMPAIGN COMPLETION
Alarms ? (Review campaign history)
Snag Sheet Items / Review TPM board
PM's due ? Calibrations due?
DP Amp Draw (HWP required) and Oil Level Check
Heater 1 L1 Amp Draw
Meter name
Unit
Heater 1 L2 Amp Draw
Meter name
Unit
Heater 1 L3 Amp Draw
Meter name
Unit
H1 DP Amp Draw Even?
H1 DP Oil Level
CT L1 Amp Draw
Meter name
Unit
CT L2 Amp Draw
Meter name
Unit
CT L3 Amp Draw
Meter name
Unit
CT Amp Draw Even?
CT DP Oil Level
Heater 2 L1 Amp Draw
Meter name
Unit
Heater 2 L2 Amp Draw
Meter name
Unit
Heater 2 L3 Amp Draw
Meter name
Unit
H2 DP Amp Draw Even?
H2 DP Oil level
Vacuum pump oil (Check all levels and cond)
G1↑
G1↓
G2↑
G2↓
Gun 1 Block Current
Gun 2 Block Current
Scrapers & Bellows ? (Verify condition )
Ingot drive belts & sensors (inspect)
TURN ITEMS (clean and inspect, functional test and repair as required) Front Half
Please document the date & time the coat tank was vented.
LOTO is required for servicing the load chambers. Please place your lock on the chamber that you are servicing
Verify cable connections at the feedthrough on the bottom of the load chamber and connections at all 3 servo motors. Clean and wipe down all 3 assemblies
Feeder bearing (spin test / flush / lube)
Tri-shaft bearings (slide test / flush). Ensure tri-shaft wiper brushes are making full contact when returned to service.
Verify both Butterfly and Tandem Tilt prox's are set to proper gap of .030, bracket is straight and turn on when flagged.
Inspect rotation pinion and ring gear assy for wear / damage. Please insert a photo here of the rotation gears from CH 2 only, thanks.
Water hoses (Inspect for excessive wear)
Remove rake clamps, clean, tap bolt holes, install new bolts with boron nitride on threads
Inspect Heat Shield on Stinger (ensure it's level)
Using the rake arm no-go gauge, slide it over both wear bands for the short and long arms to verify that it does not go "on".
Any special findings after servicing all 4 feeders?
Offset
Cond of graphite
Offset
Cond of graphite
G1
Meter name
Unit
G2
Meter name
Unit
If Gun was changed Enter Gun position and serial #
Blow out gun hood air filters each TURN
Click here to sign
Take picture of clean filters
Add or drag pictures
Back Half of TURN
LOTO is required for entry into the Coat Tank. Please place your lock on the group box before servicing.
Please document the date & time we were given the coat tank.
Ingot feed jams last campaign? Heavy pitting? This is important to get right.
Bore 1 [mm]
Meter name
Unit
Bore 2 [mm]
Meter name
Unit
Upper Crousel & Ingot Feed Bearings
Lower Carousel & Ingot Feed Bearings
CT shafts or Shutter Cables (Clean and inspect)
Take before and after pic of trombone
Add or drag pictures
CT
H1
H2
Please document the date & time we gave the coat tank back to production.
Humidity Reading in the Room when closed up.(sensor next to computer)
Notes / additional items serviced? How much time did that take? Should that work happen under a different WO?
How long did pump down take? From they time they hit evac to the time it crossed over?
Source: PGT - Indy (Community Member)