Red Jacket LPG Premier, Руководство по установке, Страница: 36 / 40

Servicing The Red Jacket LPG Pump-Motor Unit Troubleshooting Guide
32
Troubleshooting Guide
The table below lists suggested troubleshooting procedures for pump related problems.
Symptom Cause of Trouble What to Check How to Correct
Vehicle Does Not Fill AFL valve in vehicle tank not
open Contents gauge AFL valve is faulty if tank is not full
Blockage in discharge line to
vehicle Compare flow rate on other
lines Clear blockage
Blocked filter in dispenser or
nozzle Compare flow rate on other
lines Clean filters
Differential pressure low See SYMPTOM
Dispenser is not authorized Power to dispenser Re-establish power to dispenser
Nozzle connection to vehi-
cle Correct connection
High pressure in vehicle tank Vehicle tank temperature Cool tank or reduce number of open
nozzles
Inadequate product in supply
tank Liquid level in supply tank Fill supply tank
Pump not running See SYMPTOM
Vehicle tank is full Contents gauge No problem exists
Differential Pressure Low Discharge head or pump is
loose, creating pressure leak Pump/motor assembly Pull pump/motor assembly, check
condition of O-rings and gasket.
Assemble and re-tighten screws
properly.
External bypass is set incor-
rectly or is faulty Bypass Correct bypass to required setting
Motor is running in wrong direc-
tion Reverse two motor wires at
the contactor Proper connection will always provide
highest pressure
Motor is single phased Amperage or voltage to
motor If one leg is zero, contactor or power
supply is faulty
Pump staging has failed Have filters been clogged? Clean filters and service pump
Restriction into pump well Ball valve and excess flow
valve Open ball valve
Equalization line restricted Ball valve in equalization
line Open ball valve or increase size
Too many open nozzles per
pump Single pump installation Limit number of nozzles per pump
Dual pump installation Are both pumps running?
Vapor balance line between
supply tank and pump well is
restricted All valves in line Open valves or clear obstruction