Trouble Shooting Chart - Johnson Pump Viking Power 16 Handbuch

Winterizing
Drain the pump from water by pumping it
until it primes air and there is no fluid com-
ing from the outlet.
Service instructions
Change of diaphragm
1. Remove the two screws that hold the
clamps, and remove the two clamps
2. Remove the pump housing
3. Remove the screw that hold the dia-
phragm and the diaphragm washer
4. Remove the diaphragm and the dia-
phragm washer
5. Mount the new diaphragm and the new
diaphragm washer with the new screw
6. Assemble the pump housing and the
clamps

Trouble shooting chart

Symptom
1. Pump does not run.
2. Pump does not prime.
3. Low flow/pressure.
4. Pump is excessively noisy.
8
Cause
1.1 Tripped thermal protector
or blown fuse.
1.2 Faulty wire connection or
or blown fuse.
1.4 Motor malfunctioning.
1.5 Pump/motor frozen.
2.1 Tank empty.
2.2 Debris in check-valves.
2.3 Perforated diaphragm.
2.4 Leak on inlet side of pump. 2.4.1 Check tightness of hose connections at
2.5 Inlet or outlet plumbing
restricted.Restriction on
outlet side of pump/too
high pressure.
3.1 Leak on inlet side of pump. 3.1.1 Check tightness of hose connections,
3.2 Leak on outlet side of pump. 6.2.1 Check tightness of hose connections,
3.3 Perforated diaphragm
3.4 Motor malfunction
3.5 Debris in check-valves
4.1 Inlet or outlet plumbing
restricted. Restriction on
outlet side of pump/too high
pressure.
4.2 Pump mounting is loose.
4.3 Defective motor
4.4 Defective transmission
Change of pump housing
1. Remove the two screws that hold the
clamps, and remove the two clamps
2. Remove the pump housing
3. Assemble the new complete pump hous-
ing and the clamps
Cleansing check valves
1. Remove the two screws that hold the
clamps, and remove the clamps
2. Remove the pump housing
3. Inspect the rubber check valves and re-
move any debris
4. Assemble the pump housing and the
clamps
Solution
1.1.1 Check fuse. If motor is overheated let it
cool down prior to restart.
1.2.1 Check battery/power supply, main switch
and wiring._
1.4.1 Change pump._
1.5.1 Thaw pump and system and check for
damage. The pump/ motor is liable to
damage when a frozen pump is started
2.1.1 Fill up tank.
2.2.1 Open the pump body by unscrewing the
two supporting screws and clean the
check-valves.
2.3.1 Replace diaphragm.
pump and tank.
2.5.1 Check plumbing and valves
check hose for possible damage
check hose for possible damage.
3.3.1 Replace diaphragm
3.4.1 Change pump
3.5.1 Open the pump body by unscrewing the
two supporting screws and clean the
check-valves.
4.1.1 Check plumbing
4.1.2 Ensure that valves on inlet/outlet are open
4.2.1 Tighten screws
4.3.1 Change pump
4.4.1 Change pump