Ingersoll-Rand 7700-E Series, Installation, Operation And Maintenance Instructions

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32
Spark-Resistant Hoist Section
Models Hook
Mounting
Capacity (lbs)
Load Chain
Hooks
Max. Lift Rate
at 90 psig
Max. Descent
rate at 90 psig
Type
Number
7712EL 550
Zinc Plated, Link
37708* Bronze
50 fpm 70 fpm
7714EL 1500
Zinc Plated, Link
37708* Bronze
16 fpm 16 fpm
* Note: Order in FT.
The hoists listed in the chart above are furnished with load chain made of zinc plated alloy steel. The top and
bottom hooks of these hoists are bronze, with snaps.
The 550 lb. capacity, hoists have a rate of lift of 50 feet per minute and 70 feet per minute on descent. The 1500 lb.
capacity hoists have a rate of lift and descent at approximately 16 feet per minute.
SPECIAL NOTE: Spark-resistant models are shipped from the factory with valves (41595) preset for maximum rates
of lift and descent and are secured by set screws (41627-1). DO NOT ADJUST OR REMOVE VALVES (41595) on
these models. If head assembly is replaced for service, valves (41595) must be adjusted for the following rates of lift
and descent.
550 LB. CAPACITY HOISTS:
Rate of lift with maximum throttle opening with a 500 lb. load shall be: 50 ft/min. maximum.
Rate of descent with maximum throttle opening and a 500 lb. load shall not exceed: 70 ft/min.
1500 LB. CAPACITY HOIST - Rate of lift and descent with maximum throttle opening with a 1500 lb. load shall not
exceed 16 ft./min.
Figure 24. MHP3445
N D P U
ADAPTER 46211 (MODELS 7712-EL and 7714-EL)
SCREEN 31648
SCREEN 46072
LOCK WASHER (6) Y14-10
CAP SCREW (6) Y154-54
VALVE BODY 37704
"O" RING Y325-19
LOCK SCREW 34024
SHAFT 34025
GEAR 34030
ROLL PIN Y178-56
GEAR 34022
VALVE BODY (2) 41595
"O" RING (2) 04662045
LIFT VALVE 46079
SPRING (2) 38966
"O" RING (2) Y325-116
VALVE CAP (2) 34026
CONTROL ROD 34021
SET SCREW (2) 41627-1
OILITE CASTING 33190
"O" RING Y325-9
WASHER (2) 31389
HEAD 46071
INCLUDES PIPE
PLUG (3) Y227-3
(NOT SHOWN)
OIL SCREW (2) 30747
SWIVEL BODY 33314
"O" RING (2) Y325-115
SWIVEL 46839
RETAINING RING Y145-28
VALVE 37703
"O" RING Y325-17
*
*
*
*
*
*
*
INCLUDED IN SWIVEL KIT 46840
NOT INCLUDED IN HEAD ASS'Y.
NOT USED WITH PENDANT CONTROL MODELS
SEE SPECIAL NOTE ABOVE
INCLUDED IN SWIVEL KIT 46841
46078 HEAD ASSEMBLY
*
*
NOT SHOWN "O" RING (2) Y325-11