Pentair Fairbanks Nijhuis 1590F Operating instructions

NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible
party who maintains the system.
MODEL 1590F
VERTICAL INLINE FIRE PUMP
INSTRUCTION AND REPAIR MANUAL
Part #FMF-03-329 | © 2012 Pentair Ltd. | 12/26/12

Fairbanks Nijhuis™12/26/12
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ATTENTION: SAFETY WARNINGS:
Read and understand all warnings before installation or
servicing pump.
OPERATIONAL LIMITS: *
Maximum Operating Pressure: 175 psi at Temperatures
to 150OF (65.6°C)
Maximum Operating Temperature: 225°F (107°C)
* See ASTM A126/ANSI B16.1 for pressure/temperature
ratings of flanges.
ELECTRICAL SAFETY:
HIGH PRESSURE SAFETY:
SERVICE:
Your Fairbanks Nijhuis pump requires little maintenance other
than periodic inspection, occasional cleaning, lubrication of
bearings and gland adjustments to minimize packing leakage.
The intent of inspection is to prevent breakdown, thus
obtaining optimum service life. The liquid end of the pump
is lubricated by the fluid being pumped and therefore does
not require periodic lubrication. The motor, however, may
require lubrication, in which case, the motor manufacturer’s
recommendation should be followed.
REPAIRS:
Before starting any work, ensure the electrical power is
locked out, the system pressure has been lowered to 0 psi and
temperature of the unit is at a safe level.
The pump may be disassembled using the illustrations and text
provided. Although complete disassembly is covered, it will
seldom be necessary to completely disassemble your Fairbanks
Nijhuis pump.
Inspect removed parts at disassembly to determine if they can
be reused. Ball bearings that turn roughly or show wear should
be replaced. Cracked casings should never be reused. Scored
or worn pump shafts should be replaced. Gaskets should be
replaced at reassembly simply as a matter of economy. They
are much less expensive to replace routinely than to replace
as the need arises. In general it is economical to return to the
manufacturer for repair of only the motor and motor controller.
DISASSEMBLY:
Disassemble only what is needed to make repairs or to
accomplish inspection. Proceed to disassemble the pump as
follows:
1. Break electrical connections to prevent any possibility of
pump starting during disassembly.
2. Remove plug (74) from casing (6) to drain pump.
3. Remove all relief, cooling, flushing, or drain lines from
the pump including compression connections (1 & 2),
ball valve (75) and tubing (3) if provided. Break suction
and discharge connections only if it is desired to remove
casing (6).
4. Remove capscrews (5) and two opposite capscrews (41).
Thread two capscrews (5) into taps that held capscrews (41)
and turn alternately until cover (26) separates from casing. This
procedure may vary slightly for some pump sizes. Lift pump
assembly with motor from casing (6). Remove gasket (8).
Warning:Electrical Shock Hazard
All electrical connections are to be made by a qualified
electrician in accordance with all codes and ordinances.
Failure to follow these instructions could result in serious
personal injury, death or property damage.
Warning:Electrical Overload Hazard
Insure all motors have properly sized overload protection.
Failure to follow these instructions could result in serious
personal injury, death or property damage.
Warning:Sudden Start-Up Hazard
Disconnect and lockout power source before servicing.
Failure to follow these instructions could result in serious
personal injury, death or property damage.
Warning:High Pressure Hazard
The pump is rated at a maximum of 175 psi at 150°F. Do
not exceed this pressure. Install properly sized pressure
relief valves in system. Failure to follow these instruc-
tions could result in serious personal injury, death or prop-
erty damage.
Warning:Lifting Hazard
The motor and pump assembly may be very heavy. Use
extreme caution and safe lifting equipment during the lifting
procedure. Failure to follow these instructions could result
in serious personal injury, death or property damage.
CALIFORNIA PROPOSITION 65 WARNING:
This product and related accessories contain chemicals
known to the State of California to cause cancer, birth
defects or other reproductive harm.
Warning:

Fairbanks Nijhuis™12/26/12
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5. Unscrew impeller screw (9) and remove washer (9A),
gasket (9B) and seal washer (9C).
6. Slide impeller (11) and impeller key (12) from the shaft,
Remove O-ring (10).
7. Wearing ring(s) (7 & 16) are pressed into their housings
with an interference fit and must be removed with a puller if
new rings are required.
8. Remove capscrews (65), gland clamps (22), and
gland halves (23).
9. Unscrew remaining capscrews (41) and remove
cover assembly (26).
10. Shaft sleeve (25) is slip fit on the shaft and should be easily
removed unless the pump has been in service for a long
time. In this case, it may be necessary to use a puller. Take
care to prevent damaging the surface of the sleeve. Replace
the sleeve if it is grooved from wear.
11. The packing (28) and lantern ring (29) (if used), must
now be removed from the packing box of cover (26), and
the cavity thoroughly cleaned to allow new packing to fit
properly. The throat of cover (26) should be checked for
excessive wear.
12. If necessary, unscrew capscrews (32) and remove bracket
(35) from motor.
REASSEMBLY:
Reassembly will generally be in reverse order of disassembly.
If disassembly was not complete, use only those steps related to
your particular repair program.
1. Replace wear ring(s) (7 & 16) in casing (6) and cover (26).
Rings should not be hammered into place. Use a press or
clamp the parts in a bench vise using wooden blocks to
protect the rings. It may be necessary to pin or dowel the
rings after assembly if the cover or casing has had rings
replaced before, since each reassembly can stretch or tear
metal and thereby loosen fits. If the facilities are available, it
is good practice to take a very light finish cut or to ream the
inside diameter of the casing rings after pressing to restore
roundness. When rings are pressed, they may get squeezed
out of shape.
2. If bracket (35) was removed, position the motor and secure
with capscrews (32). Tighten screws evenly to assure
proper alignment.
3. Place one ring of packing (28) into cover (26). On
successive rings of packing, stagger the packing joints
to prevent excessive leakage through the packing box. If
lantern ring (29) is used, place a second ring of packing (28)
into the cover before installing lantern ring.
There must be two (2) rings of packing in front of lantern ring
(29) to assure proper alignment between the lantern ring and
the sealing tube connection (1) in the cover (26). Install
remaining packing rings (28). Each ring should be tapped
firmly in place with a wood or metal bushing.
4. Slide the sleeve (25) through the packing making sure the
pin end of the sleeve (25) is in the cover side opposite the
gland halves (23).
5. Replace gland halves (23) and place gland clamps (22) over
capscrews (65). Tighten capscrews (65) finger tight into
cover assembly (26).
NOTE:
The slots in gland halves (23) should be diagonal to pump
horizontal center line.
6. The cover assembly (26) as a unit may be replaced onto
the motor shaft. Align key groove to facilitate impeller
reassembly, The cover is held to motor bracket (35) by
capscrews (41). These should be installed and tightened at
this time.
7. Carefully place O-ring (10) on motor end of impeller (11).
Assemble key (12) and impeller (11) to motor shaft. Secure
impeller with gasket (9B), washer (9A), seal washer (9C),
and impeller screw (9).
8. Install the pipe plug (74) in the pump casing (6). Position
a new gasket (8) on casing (6). Lower bracket, cover, and
motor assembly onto casing and secure with capscrews (50).
9. If provided, replace compression fittings (1 & 2), ball valve
(75), and tubing (3).
10. Secure suction and discharge piping to the pump. Make sure
to install gaskets on flanged connections.
11. Connect electricity to the motor.
12.Read carefully the sections of the manual titled
INSTALLATION and OPERATION.
STARTING PUMP AFTER REASSEMBLY:
Do not start pump until all air and vapor has been bled and
until making sure that there is liquid in the pump to provide the
necessary lubrication for the packing.
When the pump is returned to service, additional care must
be given to packing box to ensure a proper packing life. It is
necessary to allow 60–120 drops leakage per minute through
the packing for lubrication purposes. If the flow rate is other
than this, the capscrews should be either loosened or tightened
one quarter turn at a time to acquire the correct leakage (both
capscrews must be turned equally to prevent cocking of the
gland). It will take approximately ten minutes at any one gland
setting before the leakage rate will stabilize. When in doubt,
choose the greater leakage rate since overly tight packing will
ruin not only the packing, but the sleeve as well.
CAUTION

Fairbanks Nijhuis™12/26/12
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1. Compression Fitting
2. Compression Elbow
3. Tubing
4. Pipe Plug
5. Capscrew
6. Casing
7. Wear Ring
8. Gasket
9. Impeller Screw
9A. Washer
9B. Gasket
9C. Seal Washer
10. Gasket
11. Impeller
12. Impeller Key
16. Wear Ring
22. Clamp
23. Gland
25. Sleeve
26. Cover
28. Packing
29. Lantern Ring
32. Capscrew
33. Screw
34. Nameplate
35. Bracket
39. Capscrew
40. Nameplate Holder
41. Capscrew
65. Capscrew
68. Pipe Plug
73. Base
74. Pipe Plug
75. Ball Valve
76. Nipple
MODEL 1590F LIST OF PARTS
33
34
41
65
22
28
29
28
1
68
26
16
40
5
35
32
23
25
3
2
75
76
4
39
10
12
11
9B
9A
9C
9
8
7
4
6
74
73
I C. NO 33, 34 & 40
NOT AVAILABLE AS
REPAIR PARTS
NOTE:
When ordering spare parts always include the pump
type, size, serial number and piece number from the
exploded view in this manual.