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WSC55 SERIES CHEMICAL SPRAY CART • OPERATION AND PARTS MANUAL — REV. #1 (08/30/19) — PAGE 31
OPERATION
Pump
1. To activate the pump, push the pump control lever
forward until it latches in the forward position
(Figure 30). The self-priming pump will begin to
displace liquid within a few seconds.
Figure 30. Engage Pump
2. Make sure the appropriate spray tip for the
desired application is installed onto the spray gun
(Figure 31). Always refer to the chemical manufacturer's
recommendations when selecting a spray tip. Refer to
Table 8 for spray tip selection information.
NOTICE
DO NOT
run the pump dry. Excessive heat will damage
the pump's rollers and seals.
NOTICE
A squirt of oil into the inlet side of the pump before
starting will accelerate the priming action.
PUMP
CONTROL
LEVER
Figure 31. Spray Tip Installation
3. Aim the spray gun and pull the trigger to disperse
liquids onto their final application (Figure 32). Release
the spray gun trigger to stop dispersion.
Figure 32. Liquid Dispersion
4. Turn the pressure regulator on the pump (Figure 33)
to adjust the spray pressure as needed.
Figure 33. Pressure Regulator
bar
psi
0
5
20
10
150
100
300
50
0
250
200
15
PRESSURE
REGULATOR