TROUBLE SHOOTING (BOWL PERFORMANCE)

Replace gasket. Differences in height on a gasket must not exceed 0,25 mm.

*Troubles*	*Causes*	*Remedies*
*The bowl does not close properly (cont'd.)*	*5) Sealing edge of piston is damaged.*	*Re-turn sealing edge of piston slightly or send piston to factory for repair.*
	*6) Shut-off valve for operating-liquid does not close properly.*	*Replace shut-off valve.*
	*7) Bowl is placed too high; thus too small an amount of operating water gets into the injection chamber.*	*Adjust bowl to proper height*
*The bowl does not open at all or not completely.*	*l) The amount of operating water available per unit of time is too .small*	*Check water pressure. If necessary, increase water pressure.*
	*2) Strainer in operating-water line is dirty.*	*Clean strainer.*
	*3) Gasket in operating-water line is damaged. Part of the operating water gets lost.*	*Replace gasket in operating-water line.*
	*4) Operating-water line has become narrowed as a result of dirt deposits.*	*Clean operating-water line or replace it.*
	*5) Dry sludge or rubber scraps have become lodged between guide surfaces of distributor and sliding piston or between sliding piston and bowl bottom.*	*Clean bowl parts. Round off edges of gaskets. Replace damaged gaskets. Apply thin film of molybdenum disulfide paste to guide surfaces.*
	*6) Dirt has deposited in sealing chamber.*	*Clean sealing chamber.*
*Incomplete de-sludging of the bowl.*	*l) Bowl has been closed prematurely. Solid particles which could not be ejected have gradually accumulated in the bowl and hardened through the long time of centrifugation.*	*Clean the bowl.* *Leave operating-water valve open for about 12 seconds. If necessary, carry out several flush de-sludgings.*

*Troubles*	*Causes*	*Remedies*
	*2) Orifice in sliding*	*Reduce diameter of orifice*
*Incomplete de-sludging*	*piston, which discharges*	to 1,2 mm. This is done by
of the bowl.	*the opening water, has*	*drilling up the orifice to*
*(cont'd.)*	*enlarged. The sliding***	*4 mm then closing it by*
	*piston moves downwards*	*driving in a pin and re-*
	*too* *slowly. Part of the*	*boring it to proper diame-*
	*sludge remains in the*	*ter; or reduce diameter of*
	*bowl*.	*orifice* *by beating.*
	*3) Tension of disc set*
	*has* *slackened.*	*Check disc count; if*
		*necessary, add spare disc*
		or blind spare disc.
	*l) Bowl has been closed*	*Leave operating-water valve*
*Gasket in bowl top*	*prematurely*.	*open* *for about 12 seconds.*
*shows* *premature wear.*	*Solids have become*
	*lodged between top of*
	*piston and gasket of*
	*bowl* *top.*
	*2) The feed liquid contains*	*Pre-strain feed liquid.*
	*abrasive* *solids.*
	*The amount of operating*	*Instead of the manually*
*The bowl opens after*	*liquid in the sealing*	*operated shut-off valve*
*a long separating*	*chamber has lessened dur-*	*(for operating liquid)*
*time*.	*ing a long separating*	*use a solenoid valve which*
	*time (due to evaporation*	*is opened briefly at pre-*
	*etc.).***	*set intervals by an electron-*
		*ic timing* *relay .*

	*The bowl has not been*	*Prior to removing distributor*
*The bowl does not*	*cleaned properly prior*	*and sliding piston, dissolve*
*close or open proper-*	*to the long-term shut-*	*the scale with citric acid*
*ly after a long-term*	*down of the separator*	or formic acid.
*shut-down of the*	*(see sect. 9.6). Scale*	*Then disassemble bowl and*
*separator*.	*has formed between*	*clean it thoroughly*
	*distributor and sliding*
	*piston or between*
	*sliding piston and bowl*
	*bottom*.
	*Peed to bowl is hindered*	*Clean distributor neck*
*Overflow of the*	*by deposits in distribu-*
*bowl*.	*tor neck with high*
	*specific gravity, such*
	*as rust from tanks and*
	*pipe* *lines.*

Bowl and Operating-Water Peed Assembly-shown with regard to possible Operating Troubles

TROUBLE SHOOTING (GENERAL)

Reduce number of clutch shoes to 3 or 2. See that shoes are evenly distributed

*Troubles*	*Causes*	*Remedies*
*17.4.*	*l) The separated sludge*	*De-sludge bowl several*
*Uneven run of the*	*has deposited uneven-*	*times (see sect. 7.4.2. or*
*separator*.	*ly in the bowl (see*	*7.4.3).*
	*also* *sect. 16.4).*	*If de-sludgings do not im-*
		*prove conditions, close*
		*the bowl and fill it with*
		*oil or water in order to*
		*suppress increased vibrations*
		*occuring during slowing-*
		*down* *of the bowl. Stop the*
		*separator. Apply brakes.***
		*If bowl proves to be leaky,*
		*leave* *feed line open.*
		*Clean the bowl*
	*2) Bowl is not properly*	*Assemble bowl properly (see*
	*assembled or, if*
	*plant has several*
	*separators, bowl*
	*parts may have been*
	*interchanged*.
	*3) Tension of disc set*	*Check if bowl lock ring is*
	*has* *slackened.*	*properly closed*

		*Check disc count.*
		*If necessary, add spare disc*
		*or blind spare disc*

	*4) Bowl is damaged and,*	*Send bowl to factory or*
	*therefore, out of*	*authorized factory repair*
	*balance*.	*shop. Do NOT attempt to make***
		*your own repairs, never weld*
		or solder. Bowl is made of
		*heat-treated* *steels!*
	*5) Neck bearing springs*	*Replace all 6 neck bearing*
	*are* *weak or broken.*	*springs*.
	*6) Pressure spring in*	*Replace pressure spring.*
	*bottom* *bearing is.*
	*broken. Bowl is found***	*Adjust bowl height. See*
	*to be about 2 mm too*
	*low* *in the frame.*

*Troubles*	*Causes*	*Remedies*
	*7) Ball bearings are worn.*	*Exchange damaged bearings.*
*Uneven run of the*		*IMPORTANT!*
*separator*.		*As spindle bearings use only*
*(cont'd).*		*ball bearings with increased*
		*accuracy of running*

	*8) Gear parts are in bad*	*Clean gear chamber thoroughly*
	*condition as a result*
	*of: 1. normal wear, 2. premature wear*	*Replace worm wheel assembly with clamp plates 215a-h and at the same time worm 159d*
	*caused by:*	*(on SAOG 3016) or worm spindle*
	*a) lack of oil*	*159f (on SAOG 5016). Never replace only one gear part!*
	*b) oil of too low a viscosity;*
		*Change oil*
	*c) metal abrasives*	*If necessary, change oil more*
	*present in the*	*often*.
	*lubricating oil due*
	*to the following*
	*possible causes:*
	*- viscosity of oil*
	*is too low;*
	*- oil has not been*
	*changed in time; - gear chamber has not been cleaned;*	*Regarding item 2e, the following should be kept in mind:*
	*d) replacement of one gear part only;*	*The operating-water pressure must range between 28 and*
	*e) water breaking-in*	*70 psig. Make sure that*
	*because operating-*	*shut-off device for operating*
	*water pressure is*	*water is always closed during*
	*too high or because*	*shut-down* *of separator.*
	*operating-water valve*	*If necessary, provide a*
	*was open for a longer*	*second* *shut-off device.*
	*period during shut-*
	*down* *of the separator.*

*Dirty-oil pump does*	*l) Dirty-oil pump is defective.*	*Check shaft gaskets in pump.*
*not suck in.*		*Inspect spill valve; if*
		*necessary, re-adjust.***
	*2) Suction lines are clogged*	*Clean or seal suction lines.*
	or leaky.	*Check bottom valve!*
	*3) Pre-strainer is clogged*	*Clean pre-strainer*
	or leaky.
		*Replace gasket in cover.*