Fitting Alignment; Test Procedures; Preventive Maintenance - Ransburg DR-1 75902 Service Manual

TEST PROCEDURES

(Refer to Figure 1)
After repair is complete, test the regulator in the
following manner:
1. Set air and fluid regulators to zero and attach air
and fluid lines to the regulator.
2. Gradually increase air pressure to the regulator
to 80 psi, visually checking for leaks. Tighten Item 4
(screws) if leakage occurs.
3. Set air regulator to zero. Gradually increase fluid
pressure to 80 psi, visually checking for leakage.
Clean or replace Item 11 (needle and seat) if leakage
at outlet port.
>
If water or solvent is used for testing, it
is normal for minor leakage to occur at the
fluid output port, due to the low viscosities
of these fluids.
LN-9228-00.3
Aerobell 33R (Robot Mount)
Figure 2: Fitting Alignment
NOTE
DR-1 Plastic Fluid Regulator - Maintenance
4. Gradually increase air pressure on either of the air
lines and visually observe a gradual increase in fluid
flow. If regulator does not perform satisfactorily,
inspect components for damage and replace where
required.

PREVENTIVE MAINTENANCE

1. Rebuild with 73913-01, repair kit, and 74160-00,
needle and seat, at 6 months minimum, 12 months
maximum.
2. Retorque eight (8) screws at the following inter-
vals:
- 2 days after rebuild
- Immediately before installation
- 6 month intervals
12