USER MAINTENANCE

Presentation Overview1.Compressor function

2.Maintenance Routine

3.Problem solving

1.Compressor Functioni.Pumping group description

The air compression process

Safety Valves

Pressure maintaining valve

i.Pumping Group DescriptionThe main parts of a pumping unit are:

Cylinders / heads

Pistons / con-rods

Crankcase / shaft

i.Pumping Group Description Cylinders are connected with Stainless Steel pipes

The pipes move pressurized airbetween the first,Second and thirdCylinders cooling it at the same time .

Each cylinder has two valves :Suction valveAllows air into cylinder to be compressed by the piston. Release valveAllows pressurized air out after thepiston has compressed it further.i.Pumping Group Description

i.Pumping Group Description Lubrication is achieved via a splash* andpump * *feed system

The main drivewheel provides air flow tocool the machine via fan blades

* MCH 6, 8,13 & 16 * * TROPICAL RANGE

i.Pumping Group Description The Coltri Sub range uses 3 types of pumping unit :MCH 6 4 cylinders, splash feed

MCH 8,13,16 & 323 cylinders, splash feed Tropical plus range incorporate pump and splash feed

MCH 364 cylinders, oil pump

Filtration Path

Intake Filter

Water Separator

Main Filtration Tower

. i.Pumping Group Description

ii.The Air Compression Process

First Stage safety valve: 8 BarSecond Stage safety valve: 50 BarThird Stage safety valve: 225/330 Bar

iii.Safety Valves

iv.Pressure Maintaining Valve The function is to retain a 120 150 bar pressure in the filter tower to ensure efficient filtration Filter media functions best with air flowing @ 120 - 150 bar Check valve setting weekly

iv.Pressure Maintaining Valve To set valve:Start compressor & open filling valve

Check gauge on separator for internal pressure

Adjust by turning lower cap

Anti clockwise -Clockwise +.

Maintenance routineAir Intake filter

ii.Filter cartridge

iii.Oil changes and types

iv.Safety checks

v.Compresor cleaning

Maintenance Routine

Gently blow clean every 20 hrs and re-insert rotating position. Change filter regularly:

MCH 6 100 hrsMCH 13 80 hrs MCH 16 70 hrsi.Air Intake Filter

Replace before air startsto smell:MCH 6 50 Hrs* MCH 13 50 Hrs*

MCH 16 40 Hrs**@ 20 Celsius ambient temp. Filter lifespan decrease when ambient temperature and humidity increase. Halve the values listed above for temperature of 30 degrees and above.

ii.Filter Cartridge

iii.Oil Changes & Type After initial 50 operating Hrs and then every:

MCH6* 50 hrs synthetic oil

MCH 13/16* 200 hrs synthetic oil

MCH 36 * 250 hrs synthetic oil

* Coltri Synthetic Oil only recommended. Mineral and synthetic oils must not be mixed

iii.Oil Changes &Type

Synthetic oils Coltri Oil CE 750

iv.Safety Checks Check motor-engine and compressor bolts

Check V belt tightness

Check electric power supply

Check compressor oil level

Check function of safety valve and their calibration. * *If valves blow stop machine, Call technician

A dirty machine overheats, and does not allow to see clearly oil or air leaks.

A weekly rinse with medium/low strength pressure pump will avoid this

Ensure that water does not enter the air intake, electric motor or electrical parts of the compressor system. v.Compressor Cleaning

Air Odor

Compressor overheats

Decreasing air output

Electric motor fails to start

Electric motor runs slowlyProblem Solving

Problem: Filter cartridge exhausted Solution: Replace cartridge

Problem: Piston rings worn out Solution: Replace piston rings

Problem: Use of wrong oil Solution: Refer to user manual for correct lubricant i. Air Odor

Problem: Compressor running backwards Solution: Check 3 phase connection

Problem: Dirty intercoolers Solution: Clean intercoolers

Problem: Suction /Release valve are not functioning, Solution: Clean or replaceii. Compressor Overheats

Problem: Insufficient ventilation or ambient temperature above 40 Celsius Solution: Re-site compressor or use additional forced ventilation ii. Compressor Overheats

Problem: Suction/release valve malfunction Solution: Clean or change valves

Problem: 3rd/4th stage piston worn Solution: Replace piston and rings

Problem: Loose fitting or leaking gaskets Solution: Check leaks with soap solution & tighten fitting or replace gaskets iii. Decreasing air output

Problem: Intake air filter blocked Solution: Clean/replace filter

Problem: Air intake extension bent or too small Solution: Use larger section non collapsing pipe/hose

Problem: Piston rings worn Solution: Replace piston rings iii. Decreasing air output

iv. Electric Motor fails to startProblem: Three Phase, no supply or one phase down Single Phase, No supplySolution: Check supply, phases and condenser, electronic switches & relays

Problem: Tight bearings within motorSolution: lubricate/service motor

Problem: Loose electrical connection Solution: Tighten connections

Problem: Insufficient power supply Solution: Check rating of supply

Problem: Loose drive belt Solution: Tighten belt

v. Electric Motor runs slowly