Hale MBP Booster - Manual (Page 57)

❑ Troubleshooting
56 Silencer Series Booster Pump, p/n: 029-0020-83-0
PUMP LOSES
PRIME OR WILL
NOT PRIME -
continued
Chart continued on
next page.
Blocked suction
strainer • Remove obstruction from suction hose strainer.
• Thoroughly clean strainer screen.
Suction connections • Avoid placing any part of the suction hose higher than the suction
intake.
• Suction hose should be laid out with continuos decline to fluid
supply.
Air trapped in suc-
tion line • Avoid placing any part of suction hose higher than the suction
intake.
• Suction hose should be laid with continuous decline to fluid
supply.
Insufficient priming • Proper priming procedures should be followed.
• Do not release the primer control before assuring a complete
prime.
• Open the discharge valve slowly during completion of prime to
ensure complete prime.
NOTICE !
DO NOT RUNTHE PRIMER OVER FORTH-FIVE (45) SECONDS. IF PRIME IS
NOT ACHIEVED WITHIN 45 SECONDS, STOP AND LOOK FOR CAUSES
(AIR LEAKS OR BLOCKED SUCTION HOSES.)
Air trapped in suc-
tion line. • Avoid placing any part of suction hose higher than the suction
intake.
• Suction hose should be laid with continuous decline to fluid
supply.
• If air trapped in hose is unavoidable, repeated priming may be
necessary to eliminate air pockets in suction hoses.
Pump pressure too
low when nozzle is
opened. • Prime pump again and maintain higher pump pressure while
opening the discharge valve slowly.
Air leaks • Attempt to located and correct air leaks using the following
• procedures:
•
• Perform “Dry Vacuum Test” on pump per NFPA standards with 22”
minimum vacuum required with loss not to exceed 10” of vacuum
in five (5) minutes.
• If a minimum of 22” of vacuum cannot be achieved, the priming
device or system may be defective, or the leak is too big for the
primer to overcome (such as an open valve).
• After priming shut off the engine. Audible detection of a leak is
often possible.
Condition
Possible
Cause
Suggested Corrective Action
Figure 5-2: Troubleshooting Charts