John Deere GP-2700GH - Manual (Page 21)

Operator’s Manual 
Operation
PRImInG THe PumP
CAuTIOn: RISK Of unIT dAmAGe. be CeRTAIn THe nOzzle
IS nOT COnneCTed TO THe unIT WHIle PRImInG
THe PumP. PRImInG AllOWS mIneRAl dePOSITS TO
be ReleASed fROm THe SySTem WHICH WOuld
ObSTRuCT OR dAmAGe THe nOzzle ASSembly.
ReSulTInG In COSTly RePAIRS.
. It is essential to prime the pump on initial start-up and each time the water
supply is disconnected from the unit after initial use.
2. Lay the high pressure hose out to remove any loops. Water flow will constrict
the hose, creating tight loops if the hose is not straight.
. Securely connect the gun assembly to the high pressure hose.
NOTE: The nozzle assembly should NOT be connected to the gun assembly
at this time.
4. With the gun trigger locked in the “OFF” position, turn the water supply
completely on. Pointing the gun in a safe direction, unlock the gun and
squeeze the trigger.
5. Low pressure water will begin flowing from the hose/gun assembly. This
allows the unit to prime and purge any air from the system. The unit is
primed when water flow is uninterrupted by air.
6. Once the unit is primed, release the trigger and lock the gun in the “OFF”
position. Securely connect the nozzle assembly.