Recommended procedures before restarting a Heidelberg press

Points to be remembered

284
Recommended
Heidelberg sheetfed offset press

General Maintenance

▪ Clean the machine & surrounding workspace. Check machine oil level and top-up, if required (Recommended machine oil – Mobil 600XP150 /Shell Omala150/Castrol SP150)

▪ Use hand lamp to check cables, hose pipes, oil pipes for rodent damage. (Inform Heidelberg support team immediately, if anomalies are found)

▪ Open all peripherals and check for abnormalities, like rodent/pest damage. This includes rodent entry into panels, urinating on cards, and causing cable damage

▪ Check stabilizer voltage (input & output voltages)

▪ Ventilate the printing room

▪ Switch ON power, if no anomalies are found

▪ Check for errors on main display. If found, notify Heidelberg support team.

▪ When no errors are found, check pneumatic functions and lubricate, as advised below:

o Check on /off functioning of ink supply roller bracket ( run machine)

o Check on /off functioning of Ink form roller Brackets ( Spray Wd 40 and lubricate with Mobil 600XP or 150)

o Check on /off functioning of Dampening Brackets (Spray Wd 40 and lubricate with Mobil 600XP or 150)

o Check on /off functioning of Dampening Intermediate brackets (Spray Wd 40 and lubricate with Mobil 600XP or 150)

o Check on /Off functioning of Impression

o Check functionality of front edge & rear edge Plate Clamp opening, and Plate pressing roller to ensure smooth operations.( Clean plate clamp to remove accumulated ink and spray Wd 40, if movement is not smooth.) Notify Heidelberg support team, if you find any abnormality

o Check all sheet guides by physically opening all covers and placing a cardboard in the center. If the cardboard moves towards Ds and similarly to Os, then sheet guides are working fine

o Manually crank 3-4 revolutions prior to machine inching

Recommended measures on the Perfector follows

• Clean & grease storage drum segment on Os & Ds

• Clean storage drum flag and apply thin coat of grease on flag blocks (Dried ink if any – should be cleaned, as it can disturb Sensor settings)

• Clean & grease reversing cylinder cams; Os & Ds for Cam follower segment movement

• Grease storage drum and reversing cylinder cam followers with recommended lubricant. (Kindly refer to maintenance manual)

• Grease pincer gripper bar shaft and shaft bearings. (Kindly refer to maintenance manual)

• Check oil level in Pressure intensifier and top-up with machine oil Mobil 600XP150 or Shell Omala 150

• Prior to Changeover, set size to 350(SM52), 500(SM74), 700(Sm102). Activate command to change format size only on storage drum. Check zero position in straight

• For perfecting machines, set the press back to straight and carry out above exercise

• Once Format is checked to Zero, check segment gear zero position on Ds

• The machine is now ready for perfecting

• Clean perfecting compressor filter (Note- if you find any errors, kindly inform Heidelberg support team. We will try to assist you.)

Instructions for Impression/Transfer & Coating unit

• Free all Grippers and grease with recommended lubricant. (Accumulation of coating or varnish can lead to jamming of machine grippers and gripper shaft) Grease all printing units, gripper shafts bearings, and cam followers.

• Clean all filters for each peripheral – pull-lay, suction wheel, powder spray, and delivery sheet brake suction filter, Decurler suction filter, & Feeder /Powder spray compressor filter. Check internal Coolant pressure for DryStar, UV, and Combination star

• Clean feeder suction air distributor rotary valve before machine startup

• Clean technotrans /Baldwin freshwater inlet filters

• For a water-cooled version, check water status in cooling tower water/chiller. Ensure that water is clean for usage

• For the water-cooled version, clean all inlet peripherals filters and external filters, before machine startup. (Ensure external filters are also cleaned)

• -TRONIC/Cp2000/ Prinect display for errors. (In case of any error, you can notify Heidelberg Support Engineer and put machine on remote service.)

• With the press ON, check all rubber rollers and apply lubricant paste or oil

• Put machine in scroll mode for 15-20 minutes (Check for any abnormalities in sound etc)

• If there were no errors during Scroll mode, run the machine at minimum speed

• Now, manually activate oil and grease option on main computer console

• Run the feeder and check if there are any abnormalities

• Check suction belt alignment and correct if required

• Run the press at following speeds 6k, 9k, 12k, 15k or max speed and observe running for 5-10 minutes

• Use W40 on all dampening and ink-form roller brackets and observe on/off function. (Lubricate brackets with machine oil), kindly inform Heidelberg support team. We will try to assist you)

• Before Roller /blanket wash/purge and/or manual water wash for roller, do the following

• Wash inking unit rollers

• Circulate system cleaner in Technotrans /Baldwin for 2-3hours

• Freshwater flushing is necessary, at least twice

• Prepare a new dampening solution. Ensure to install new filters for intermediate tank and technotrans

• After 1- -conditioning

• Clean coating unit, 2 roller systems and grease drive gears

• Clean Anilox roller and Chamber doctor blade. Seals need to be checked and replaced if required

Coating Unit (Conventional)

• Circulate lukewarm water for 20-30 minutes at low feed

• Clean coating-pump filters

Cleaning Coating unit (UV)

• Circulate IPA for 20-30 minutes at low feed

• Clean coating-pump filters

• We strongly recommend labeling of flammable chemicals before storage, to make identification easier

The Covid-19 pandemic led to the country-wide lockdown on 25 March 2020. It will be two years tomorrow as I write this. What have we learned in this time? Maybe the meaning of resilience since small companies like us have had to rely on our resources and the forbearance of our employees as we have struggled to produce our trade platforms.

The print and packaging industries have been fortunate, although the commercial printing industry is still to recover. We have learned more about the digital transformation that affects commercial printing and packaging. Ultimately digital will help print grow in a country where we are still far behind in our paper and print consumption and where digital is a leapfrog technology that will only increase the demand for print in the foreseeable future.

Web analytics show that we now have readership in North America and Europe amongst the 90 countries where our five platforms reach. Our traffic which more than doubled in 2020, has at times gone up by another 50% in 2021. And advertising which had fallen to pieces in 2020 and 2021, has started its return since January 2022.

As the economy approaches real growth with unevenness and shortages a given, we are looking forward to the PrintPack India exhibition in Greater Noida. We are again appointed to produce the Show Daily on all five days of the show from 26 to 30 May 2022.

It is the right time to support our high-impact reporting and authoritative and technical information with some of the best correspondents in the industry. Readers can power Indian Printer and Publisher’s balanced industry journalism and help sustain us by subscribing.

– Naresh Khanna

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