Issue 9 February 2006
49
SECTION SIX
FAULT FINDING
Always remember, when trying to fault find, switch the machine off, remove the ignition keys,
and carry out the necessary actions. Restore the machine to its normal running conditions before
rechecking the machine.
a. Machine is not picking up / poor suction thereby leaving a trail
(remember the notion of airflow; see 1.3 How the machine works)
1. Blockage in front suction hose
2. Hopper is getting full (see 2.4.6)
3. Front nozzle is set too low/high
4. Suction impeller casing blocked
5. Engine revs. too low/high (see 2.6.1)
6. Machine travelling too fast for conditions
7. Cyclones blocked (See section 5)
b. Brush bounce
1. Brushes set too low (see 2.4.3)
2. Brush speed too low in relation to machine speed (see 2.4.5)
c. Debris/trash tends to be left on the sides of the sweep path
1. Brush angle incorrect (see 1.*/6)
2. Brush sweep path set too wide (see 2.4.4)
d. Electrical failure (example: lights or IQAN not working)
1. Check fuse boxes (see 2.6.3)
2. Check the status LED’s of the IQAN XT2 (see 2.6.1)
e. Overheating engine
1. Radiator blocked or partially blocked
2. Radiator
fins
damaged
3. Poor washing around engine area
4. Possibly incorrect fuel (see section 7)
5. Low engine coolant level (see section 3).
6. Incorrect coolant used (use 50/50 permanent anti-freeze/water all year) (see section 7)
7. Radiator screen blocked (See section 5 item 6)
8. Ensure that the fan belt is not damaged or incorrectly adjusted
f. Hydraulic oil overheating
1. Low hydraulic oil level (see section 3)
2. Incorrect hydraulic oil in system
3. Radiator dirty or blocked
4. Radiator screen blocked (See section 5 item 6)
5. Ensure that the fan belt is not damaged or incorrectly adjusted
.
g. Water sprays not working
1. Ensure that work 1 & forward gear are selected and the pump is switched on.
2. No water in tank
3. Blocked jet in line filter
4. Blocked
jet
5. Pump suction pipe disconnected at tank drain pipe
6. Blocked tank suction strainer
7. Water
pump
defective
STOP
