8-9 - Systems Troubleshooting
Steamatic 8800 TMU
VaCuum SyStem
Weak vacuum at wand. the gauge reads normal.
1.
blockage in the
1.1.
hoses or wand tube
Disconnect the hoses and check for an obstruction.
excessive length of
1.2.
hose connected to the
truckmount
Do not attach excessive lengths of hose.
Weak vacuum
2.
2.1. Air leak somewhere
in the vacuum system
Check the vacuum relief valve for proper adjustment.
Carefully check all the vacuum hoses for a cut or break.
Check the recovery tank lid gasket.
Make sure the recovery tank drain valve is fully closed.
2.2. The vacuum blower
is turning too slowly.
Check the rpm of the engine. Adjust as necessary to
3,000 rpm under a 12" Hg. vacuum load.
2.3. The vacuum gauge is
defective.
Test the gauge and replace if necessary.
the vacuum gauge reads too high with no hoses attached
3.
3.1. The filter in recovery
tank is clogged.
Remove and clean or replace as necessary.
3.2. The hose from
recovery tank to the
vacuum blower is
collapsed internally.
Inspect and replace as necessary.
excessive noise produced by the blower
4.
4.1. The blower is low on
oil.
Inspect the oil levels and replenish as necessary. Note:
Running the blower with low oil levels can cause severe
damage. If this situation occurs the blower should be
inspected by a qualified service technician.
4.2. The vacuum blower
has internal damage.
Refer to a qualified service technician.
Summary of Contents for Steamatic 8800 TMU
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Page 76: ...Water and Chemical System 6 8 Steamatic 8800 TMU Figure 6 6 Exhaust Flow Diagram 7459...
Page 78: ...Electrical System 7 2 Steamatic 8800 TMU Figure 7 1 Electrical Schematic 7458 Rev B...
Page 82: ...Electrical System 7 6 Steamatic 8800 TMU...