TABLE IV (CONTINUED)
TROUBLES
TROUBLE PROBABLE
CAUSE
REMEDY
Overload on driver
Pump speed high.
Total head lower than rating.
Liquid is of higher specific
gravity or viscosity than rating.
Mechanical trouble with pump
or driver.
Motor voltage higher than nameplate rating
will cause the motor to run faster. Either
reduce supply voltage or trim impeller
diameter. On other drives, reduce speed if
possible. If speed reduction is not possible,
trim impeller diameter.**
Check suction and discharge pressures and
determine the total head (TH). If TH lower
than rating, throttle discharge to rated TH
or, if this is not possible, reduce impeller
diameter.**
Check with Peerless distributor to determine
if a larger motor is required.
See if pump and motor turn freely. Check
impeller fit, shaft straightness and ball
bearings.
Pump vibrates or is noisy
Driver unbalanced.
Misalignment.
Cracked foundation.
Worn ball bearings.
Disconnect driver and operate it alone.
Check pump for large pieces of debris,
such as wood, rags, etc.
Realign coupling.
Replace foundation.
Replace bearings. Check lubricants for
proper grade. Check pump alignment.
**Always obtain new trim diameter from Peerless representative.
SPARE PARTS. To keep delays to a minimum
when pump repairs are required, we suggest stocking a
spare parts kit which includes the following parts:
(a) One set of mechanical seals (65 & 80).
(b) One square key (impeller) (32).
(c) One square key (coupling) (46).
(d) One set of dowel pins (case ring).
(e) One set of flanges (mechanical seal) (17).
(f) One cartridge ball bearing (inboard) (16) and one
cartridge ball bearing (outboard) (18).
(g) One set of snap rings (external, impeller location)
(2A).
(h) One se of O-ring gaskets (mechanical seal flange)
(119B).
(i) One case gasket.
For installations where downtime is critical, a complete
rotating element should be stocked.
To obtain quick and accurate service when ordering
spare parts kits, provide the following information:
(A) Pump model as noted on nameplate.
(B) Pump serial number as noted on nameplate.
(C) The name and number of the parts as shown on the
sectional drawing for items not included in the parts
kit.
(D) Quantity required of each item.
Assistance may be obtained from the Peerless Pump
Company representative or an authorized distributor for
planning an adequate supply of spare parts.
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