Graco SaniSpray HP 750, Instructions Manual

Page: 23 / 38

Maintenance
3A7939A 23
Maintenance
NOTICE
Preventative Maintenance
Schedule
The operating conditions of your sprayer affect how
often maintenance is required. Establish a preventive
maintenance schedule by recording when and what kind
of maintenance is needed, and then determine a regular
schedule for checking your sprayer.
Every 40 hours of operation, check that the packing nut
is tight. Follow the
Pressure Relief Procedure
on page
15, then use a wrench to tighten the packing nut (D) until
just snug.
NOTICE
Check the Oil
Position the sprayer on a level surface. Check the oil
level in the sight glass (K). If needed, fill until the oil level
near the halfway point of the sight glass. Do not overfill.
WLD
16W645
P
K
Change the Oil
NOTE:
Change the oil after a break-in period of
approximately 250 hours of use. After the break-in
period, change the oil once a year.
1. Follow the
Pressure Relief Procedure
on page 15.
NOTICE
NOTICE
2. Place a minimum 2 quart (1.9 liter) container under
the oil drain port. Remove the oil drain plug and
allow all oil to drain from the motor.
3. Reinstall the oil drain plug. Torque to 18–23 ft-lb
(25–30 N•m).
4. Position the sprayer on a level surface. Fill until the
oil level is near the halfway point of the sight glass.
The oil capacity is approximately 1.0–1.2 quarts
(0.9–1.1 liters). Do not overfill.
5. Reinstall the oil fill cap (P).
Do not open/remove the gear cover. The gear side is
not intended to be serviced. Opening the gear cover
may alter the factory set bearings and may reduce the
sprayer’s life.
Do not over-tighten. The packing nut can become
stripped and damaged.
Do not over-torque. The drain plug can become
stripped and damaged.
Only use Graco oil (part number 16W645) in this
sprayer. Any other oil may not lubricate properly and
can cause damage to the drive train.