Landa SDHW Series, Руководство оператора

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16
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW
ON INSTALLATION
Pump sucking air
Check water supply and possibililty
of air seepage.
Valves sticking Check and clean or replace if necessary.
Unloader valve seat faulty Check and replace if necessary.
Nozzle incorrectly sized
Check and replace if necessary
(See serial plate for proper size).
Worn piston packing Check and replace if necessary.
FLUCTUATING
PRESSURE
Valves worn Check and replace if necessary.
Blockage in valve Check and replace if necessary.
Pump sucking air
Check water supply and air seepage at joints in
suction line.
Worn piston packing Check and replace if necessary.
PUMP NOISY
Air in suction line
Check water supply and connections
on suction line.
Broken or weak inlet or discharge valve
springs
Check and replace if necessary.
Excessive matter in valves Check and clean if necessary.
Worn bearings Check and replace if necessary.
PRESENCE OF
WATER IN OIL
Oil seal worn Check and replace if necessary.
High humidity in air Check and change oil twice as often.
WATER
DRIPPING FROM
UNDER PUMP
Piston packing worn Check and replace if necessary.
O-Ring plunger retainer worn Check and replace if necessary.
Cracked piston Check and replace if necessary.
Pump protector
Lower water supply pressure. Do not run with
spray gun closed longer than 5 minutes.
OIL DRIPPING Oil seal worn Check and replace if necessary.
EXCESSIVE
VIBRATION IN
DELIVERY LINE
Irregular functioning of the valves Check and replace if necessary.
DETERGENT
NOT DRAWING
Air leak
Tighten all clamps. Check
detergent lines for holes.
Restrictor in float tank is missing
Replace restrictor. Check for proper orifice in
restrictor. See parts breakdown for proper
restrictor.
Filter screen on detergent suction hose
plugged
Clean or replace.
Dried up detergent
plugging metering valve
Disassemble and clean thoroughly.
High viscosity of detergent Dilute detergent to specifications.
Hole in detergent line(s) Repair hole.
Low detergent level Add detergent if needed.
Relief Valve Leaks
Water
Relief valve defective Replace or repair.
Landa SDHW6-35824 E/M Operator’s Manual 8.913-958.0 - AC