User Manual

41
Maintenance
All Machines
Key Checkpoints
Note: Initiation of a planned preventative maintenance
program will assure that your unit has optimum perfor-
mance, a long operating life, and a minimal amount of
"down" time.
Engine Coolant System (Radiator)
Maintenance
Your engine radiator coolant system is an important
part of the power plant operation. In addition, the heat
exchange system which is used to provide heat for
cleaning operations, is also highly dependent on the
engine coolant system. Follow the recommended
coolant system maintenance in the Maintenance
Schedule in this manual and your engine owner's
manual. Refer any additional que stions to your dealer.
External Fuel Pump Maintenance
The power plant for the unit receives fuel from the main
fuel tank of your van/truck. An external fuel pump that
provides this fuel is located on the underside of the van/
truck. Loose fittings and hose connections will cause
your unit to perform poorly. Follow the recommended
fuel pump maintenance in the Maintenance Schedule
in this manual. Refer an y ad dit i onal qu e stio ns to you r
dealer.
Chemical Supply System Maintenance
The chemical supply system pulls chemicals from your
chemical bottle utilizing a pump that works off the water
pump pulsing. Any clogg ed filters or loo se co nnection s
will result in a chemical supply system malfunction or a
malfunction at the cleaning tool. Maintenance of the
solution outlet check valve and screen are vital to
effective cleaning operation and minimal unit downtime.
Additionally, the hoses related to supplying water and
chemical to the outlet manifold are unde r high
pressures and exp e rie nc e th er ma l expansio n an d
contraction. Periodic inspections of the se ho se s for
tears, cracks, and failing connectors are necessary to
avoid unwanted leaks. To keep your chemical system
functioning properly, follow the chemical pump and
solution outlet maintenance in the Maintenance
Schedule in this manual. Refer any additional
questions to your dealer.
Heat Exchanger System Maintenance
The heat exchange system in your unit transfers
energy between the unwanted heat of the power plant
and blower discharge air , to the solution supply system.
The heat transfer of this s ystem is highly depend ent on
the surface area contact in the heat exchan ger cores
located in the heat exchanger box. This surface area
amount is adversely minimized when the supplied
water is not softened to recommended levels. Hard
water will result in scaling on the inside walls of the heat
exchanger tubes. It is recommended that you use a
dealer approved water softener to avoid prematu re
heat exchanger core failure. Contac t your dealer for
advice on the water hardness levels in your area.
Additionally, the heat exchanger tubes are very
sensitive to freezing conditions. As the water freezes
during cold conditions, it exp ands in the heat
exchanger tubes and causes damage. Of ten the tubes
are cracked and require the replacement of the heat
exchanger core. Refer to the Fr eeze Protection instru c-
tions section in this manual. Refer any additional
questions to your dealer.
Vacuum Pump Maintenance
(Refer to manufacturer's manual (P/N 86321390) for
specific maintenance instruct ion s)
The tot al function of the unit is based around the perfor-
mance of the vacuum pump. Heat transfer used to raise
the temperature of the solution is gained from the air
drawn by the vacuum pump and solution is removed
from the carpet with the vacuum suction of the vacuum
pump. General maintenance actions for the vacuum
pump as listed in this manual are vital to prolonged
vacuum pump operations. Daily lubrication of the pump
is required to avoid seizure of the system. Also, waste
tank filters and stra iners must be maint ained to prevent
unwanted debris from ente ring the vacuum pump.
86341750 APEX GTX