6 309377
Installation
10. Thread the sealing nut (5c, 6c, or 7c) onto the
extension (5a) or street elbow (6d or 7d), thread
the extension or elbow in at least three full turns,
position it for proper alignment, and tighten the
sealing nut. The PTFE seal on the sealing nut
must face the valve housing. See Fig. 4.
NOTE: Theflexibleextension(6a)canalsobe
threaded directly into the meter outlet without the
street elbow or sealing nut. See the note in the
Parts Drawing on page 19.
11. Thread the new nozzle (5b, 6b, or 7b) onto the
extension, and, with an open-end adjustable
wrench, tighten it firmly. See Fig. 4.
NOTE: Only tighten the nozzle with the wrench
on the flats of the nozzle bushing. Do not disas-
semblethe bushing from the nozzle. Disas-
sembly will affect the performance of the nozzle.
WARNING
Do not use Graco’s old nozzle (Part No. 203655) or
any other manual shut-off nozzle on the PM5
extension. You must use the new automatic nozzle
that is provided with the PM5, or the meter could
be damaged. Do not use any sealant material.
12. Open all dispense position shut-off valv es, and
start the pump to pressurize the system. See the
Operation section for proper operation of meter.
13. To ensure dispensing accuracy, purge all air from
the fluid lines and dispense valve before you use
it. Set the system flow to the desired flow rate,
which is typically 1.5 gpm. Do not exceed a 5-gpm
flowrate.
3
hosefitting
Slide onto
hosebefore
connecting.
Fig. 3
4
TI0328
hose
5c
4
5a
5b
Model shownhas
75_bend rigid
extension
Fig. 4
Nozzle is not serviceable.
nozzle bushing
TI0327
Grounding
Proper grounding is an essential part of maintaining a
safe system.
Toreduce the risk of static sparking, ground all system
components according to local and national electrical
codes. Refer to the user manuals for the pump and
other system components, and ground the following:
DPump: Follow the manufacturer’s recommend-
ations.
DAir and Fluid hoses: Use only grounded hoses.
DAir compressor: Follow the manufacturer ’srec om-
mendations.
DFluid supply container: Follow the local code.
Tomaintain grounding c ontinuity when flushing or
relievingpressure, always hold a met al part of the
valve firmly to the side of a grounded metal pail, then
trigger the valve.