Hotsy 1700 Series, Operator'S Manual

Page: 14 / 48

14
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
MOTOR STRAINS UNDER
LOAD (CONTINUED
FROM PREVIOUS PAGE)
Mis-adjusted unloader valve Call local dealer.
Pump low or out of oil Check oil level.
OIL SQUIRTS OUT OF
OIL CAP ON PUMP
Pump over filled with oil
Maintain oil level halfway up on the sight glass at
rear of pump or at top of notch on dipstick (where
applicable).
PUMP RUNNING
NORMALLY BUT
PRESSURE OUTPUT
LOW
Pump sucking air Check water supply and possibility of air seepage.
Valves sticking Check and clean or replace if necessary.
Unloader valve seat faulty Check and replace if necessary.
Nozzle incorrectly sized
Check and replace if necessary
(See serial plate for proper size).
Worn piston packing Check and replace if necessary.
WATER DRIPPING FROM
UNDER PUMP
Piston packing worn Check and replace if necessary.
O-Ring plunger retainer worn Check and replace if necessary.
Cracked piston Check and replace if necessary.
OIL DRIPPING Oil seal worn Check and replace if necessary.
EXCESSIVE VIBRATION
IN DELIVERY LINE
Irregular functioning of the valves Check and replace if necessary.
SYSTEM
WILL NOT
START
Motor overload tripped Check and reset.
Pressure switch faulty (time delay only) Check, clean or replace.
Timer faulty (time delay only) Check and replace.
MOTOR “HUMS” BUT
DOES NOT TURN
Electric motor single phasing Check for blown fuse or loose power line.
SYSTEM WILL NOT STOP
Pressure switch faulty Check clean or replace.
Timer faulty Check and replace.
SYSTEM STOPS AFTER
APPROXIMATELY FOUR
(4) SECONDS AND THEN
RESTARTS
Faulty pressure switch Check and replace.
Leak at discharge line Check for leak at hose and spray gun.
MACHINE WILL NOT
START WHEN SPRAY
GUN TRIGGER IS
PULLED
Loss of electrical power Check circuit breaker.
Faulty on/off switch, pressure switch,
timer or magnetic contactor
Test and replace as needed.
MACHINE DOES NOT
TURN OFF AFTER FOUR
(4) SECONDS WHEN
SPRAY GUN IS
RELEASED
Test power control switch and solid
state timer faulty
Replace the defective component.
Hotsy 1700 Operator’s Manual 8.914-380.0 - W