Operation | 8 |
PRIMING THE PUMP
NOTICE: 'Priming' refers to pump expelling all air in the system and beginning to move water from its source out into system. It does not refer only to pouring water into pump (although pouring water in is usually the first step).
NEVER run pump dry. Running pump with- out water may cause pump to overheat, damaging seal and possibly causing burns to
persons handling pump. Fill pump with water before starting.
Step 1. Remove priming plug.
Step 2. Make sure suction and discharge valves and any hoses on discharge side of pump are open.
Step 3. Fill pump and suction pipe with water (Figure 5).
NEVER run pump against closed discharge. To do so can boil water inside pump, causing hazardous pressure in unit, risk of explosion and possibly scalding persons handling pump (Figure 6). Replace priming plug with pressure gauge to monitor pressure so that it is not allowed to exceed maximum pumping pressures accord- ing to performance chart.
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Figure 5: Fill Pump Before Starting
Step 4. Replace priming plug, using Teflon tape on thread; tighten plug.
NOTICE: If priming tee and plug have been pro- vided for long horizontal run, be sure to fill suc- tion pipe through this tee and replace plug. (Use Teflon tape on plug.)
Step 5. Start pump; water should be produced in 10 min- utes or less, time depends on depth to water (not more than 20' (6 m)) and length of horizontal run (10' (3 m) of horizontal suction pipe = 1' (30.5 cm) of vertical lift due to friction losses in pipe). If no water is produced within 10 minutes, stop pump, release all pressure, remove priming plug, refill and try again.
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Figure 6: Do Not Run Pump With Outlet Shut Off
NOTICE: Open water system faucets before priming pump for the first time.
Remove priming plug.
Step A. Fully open control valve (turn counterclockwise).
Step B. Fill pump and suction pipe with water.
Step C. Replace priming plug, using Teflon tape on plug thread; tighten plug.
To prevent explosion, do the following:
Step A. Be sure discharge (valve, pistol grip hose nozzle, etc.) is open whenever pump is running.
Step B. If pump fails to produce water when attempting to prime, release all pressure, drain pump and refill with cold water after every attempt.
Step C. When priming, monitor pump body and piping temperature. Motor will warm up; this is normal. If pump body or piping begin to feel warm to touch, shut off pump and allow system to cool. Release all pressure in system and refill pump and piping with cold water.
Step D. Make sure discharge pipe and zone size are not too small for this pumps performance.
For parts or assistance, call Simer Customer Service at
