Tennant 1550, Manual

Page: 31 / 628

OPERATION
2--11
1550 Gas/LPG/Diesel MM283 (2--06)
CIRCUIT BREAKERS (For machines serial
number 001508 and above)
The circuit breakers are resetable electrical circuit
protection devices. Their design stops the flow of
current in the event of a circuit overload. Once a
circuit breaker is tripped, it must be reset
manually. Press the reset button after the breaker
has cooled down.
If the overload that caused the circuit breaker to
trip is still there, the circuit breaker will continue to
stop current flow until the problem is corrected.
The chart lists the circuit breakers and the
electrical components they protect.
Circuit
Breaker
Rating Circuit Protected
CB--1 15 A Gauges
CB--2 20 A Horn/Rotating, Hazard
Lights/Turn Signal
CB--3 15 A Operating Lights
CB--4 15 A Squeegee
CB--5 15 A SRS/Recovery Tank
Level Lamps
CB--6 15 A SRS Solution Pump
ENGINE OIL PRESSURE GAUGE -- DIESEL,
GAS/LPG CONTINENTAL ENGINES (For
machines below serial number 001424)
The engine oil pressure gauge registers the
engine oil pressure. Normal engine oil pressure
ranges from 7 psi (50 kPa) at idle, to 35 psi (240
kPa) at full engine throttle. If the gauge registers
an oil pressure reading below 7 psi (50 kPa), stop
the engine immediately and determine the cause.
Failure to stop the engine will result in severe
engine damage.
ENGINE OIL PRESSURE GAUGE -- GAS/LPG
GM ENGINES (For machines serial number
001424 -- 001505)
The engine oil pressure gauge registers the
engine oil pressure. Normal engine oil pressure
ranges from 35 psi (240 kPa) at idle, to 40 psi
(280 kPa) at full engine throttle. If the gauge
registers an oil pressure reading below 30 psi
(207 kPa), stop the engine immediately and
determine the cause. Failure to stop the engine
will result in severe engine damage.
ENGINE OIL PRESSURE GAUGE -- DIESEL
PERKINS ENGINES (For machines serial
number 001424 -- 001505)
The engine oil pressure gauge registers the
engine oil pressure. Normal engine oil pressure
ranges from 9 psi (65 kPa) at idle, to 70 psi (485
kPa) at full engine throttle. If the gauge registers
an oil pressure reading below 9 psi (65 kPa), stop
the engine immediately and determine the cause.
Failure to stop the engine will result in severe
engine damage.
ENGINE OIL PRESSURE LIGHT -- GAS/LPG
GM ENGINES (For machines serial number
001508 and above)
The engine oil pressure light comes on when the
engine oil pressure falls below 5 psi (40 kPa). GM
engines will automatically stop if the oil pressure
gets this low. The GM engine can be restarted
and operated for 30 seconds after this happens.
Locate the problem and have it corrected.
ENGINE OIL PRESSURE LIGHT -- DIESEL CAT
ENGINES (For machines serial number 001508
and above)
The engine oil pressure light comes on when the
engine oil pressure falls below 5 psi (40 kPa).
Stop operating the machine. Locate the problem
and have it corrected.
ENGINE COOLANT TEMPERATURE GAUGE
The engine coolant temperature gauge registers
the engine coolant temperature. Normal engine
coolant temperatures range up to 200
_
F
(93
_
C). Temperatures above this level indicate
an over-heating engine. Continental, Perkins and
Cat engines, stop operating the machine if if the
water temperature gets this high. GM engines will
automatically stop when the temperature gets too
high. Over-heating may occur due to a low
coolant level, a clogged radiator, a loose fan belt,
a defective thermostat, or other engine
malfunctions. Engine overheating will always
cause a coolant loss. If coolant loss does not
occur, check for malfunction of the temperature
sending unit.